SPV Remote Proportioning Valve
Part Number: 882.00268.00
Bulletin Number: CV4-600
Effective: 11/26/05
Write Down Your Serial Numbers Here For Future Reference:
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We are committed to a continuing program of product improvement.
Specifications, appearance, and dimensions described in this manual are subject to change without notice.
DCN No. ____________
© Copyright 2005
All rights reserved.
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Shipping Info
Unpacking and Inspection
You should inspect your granulator for possible shipping damage.
Thoroughly check the equipment for any damage that might have occurred in transit, such as
broken or loose wiring and components, loose hardware and mounting screws, etc.
In the Event of Shipping Damage
According to the contract terms and conditions of the Carrier, the responsibility of the
Shipper ends at the time and place of shipment.
Notify the transportation company’s local agent if you discover damage.
Hold the damaged goods and packing material for the examining agent’s inspection. Do not
return any goods before the transportation company’s inspection and authorization.
File a claim with the transportation company. Substantiate the claim by referring to the
agent’s report. A certified copy of our invoice is available upon request. The original Bill of
Lading is attached to our original invoice. If the shipment was prepaid, write us for a
receipted transportation bill.
Advise customer service regarding your wish for assistance and to obtain an RMA (return
material authorization) number.
If the Shipment is Not Complete
Check the packing list as back-ordered items are noted on the packing list. You should have:
; Remote Proportioning Valve
; Bill of lading
; Packing list
; Operating and Installation packet
; Electrical schematic and panel layout drawings
; Component instruction manuals
Re-inspect the container and packing material to see if you missed any smaller items during
unpacking.
If the Shipment is Not Correct
If the shipment is not what you ordered, contact the shipping department immediately.
Call 1-630-475-7413; have the order number and item number available.
Hold the items until you receive shipping instructions.
Returns
Do not return any damaged or incorrect items until you receive shipping instructions from the
shipping department.
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Table of Contents
CHAPTER 1: SAFETY................................................................5
1-1
How to Use This Manual .............................................................................................5
Safety Symbols Used in this Manual.....................................................................5
CHAPTER 2: SAFETY................................................................7
2-1
How to Use This Manual .............................................................................................7
Safety Symbols Used in this Manual.....................................................................7
General Safety Information .........................................................................................8
Warnings and Precautions ..........................................................................................9
2-2
2-3
CHAPTER 3: FUNCTIONAL DESCRIPTION...........................10
3-1
3-2
3-3
3-4
Models Covered in This Manual................................................................................10
General Description...................................................................................................10
How it Works .............................................................................................................10
Typical Features and Components ...........................................................................11
RPV-A .................................................................................................................11
RPV- B and D......................................................................................................11
RPV - C ...............................................................................................................11
CHAPTER 4: INSTALLATION..................................................12
4-1
Mounting the RPV .....................................................................................................12
Wall Mount Installation ........................................................................................12
Floor-Mount Installation.......................................................................................14
Machine-Mount Installation .................................................................................15
Installing the RPV Controls .......................................................................................16
Installing the RPV-A Autoload Knob Box Control................................................16
Installing the RPV-B and RPV-D Standalone for Central Vacuum Systems .......18
Installing the RPV-C 9953 and 9963 Hopper Loader Control..............................20
4-2
CHAPTER 5: OPERATION.......................................................21
5-1
Knob Box Operation..................................................................................................21
Ratio Knob...........................................................................................................21
Cycle Seconds Knob...........................................................................................21
Power Switch and Indicator.................................................................................21
Standalone Control Operation...................................................................................22
Power Switch.......................................................................................................22
Fuse Holder.........................................................................................................22
Conveying Time Range Selector Potentiometer .................................................22
Timer Dial Increment Selector Potentiometer......................................................22
Material A Timer ..................................................................................................22
Material B Timer ..................................................................................................22
Hopper Loader Conversion Operation ......................................................................23
Example 1 ...........................................................................................................23
Example 2 ...........................................................................................................23
Weight Test for Accurate Proportioning ....................................................................24
5-2
5-3
5-4
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CHAPTER 6: TROUBLESHOOTING .......................................25
6-1
Introduction................................................................................................................25
CHAPTER 7: APPENDIX..........................................................27
7-1
7-2
Customer Satisfaction Warranty Program.................................................................27
Technical Specifications............................................................................................27
Electrical Requirements ......................................................................................27
Compressed Air Consumption.............................................................................27
Drawings and Diagrams............................................................................................28
RPV Dimensions .................................................................................................28
RPV Assembly Drawing and Parts Breakdown...................................................29
Technical Assistance.................................................................................................30
Parts Department ................................................................................................30
Service Department.............................................................................................30
Sales Department................................................................................................30
Contract Department...........................................................................................30
7-3
7-4
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Chapter 1: Safety
1-1 How to Use This Manual
Use this manual as a guide and reference for installing, operating, and maintaining your
granulator. The purpose is to assist you in applying efficient, proven techniques that enhance
equipment productivity.
This manual covers only light corrective maintenance. No other maintenance should be
undertaken without first contacting a service engineer.
The Functional Description section outlines models covered, standard features, and safety
features. Additional sections within the manual provide instructions for installation, pre-
operational procedures, operation, preventive maintenance, and corrective maintenance.
The Installation chapter includes required data for receiving, unpacking, inspecting, and setup
of the granulator. We can also provide the assistance of a factory-trained technician to help
train your operator(s) for a nominal charge. This section includes instructions, checks, and
adjustments that should be followed before commencing with operation of the granulator.
These instructions are intended to supplement standard shop procedures performed at shift,
daily, and weekly intervals.
The Operation chapter includes a description of electrical and mechanical controls, in
addition to information for operating the granulator safely and efficiently.
The Maintenance chapter is intended to serve as a source of detailed assembly and
disassembly instructions for those areas of the equipment requiring service. Preventive
maintenance sections are included to ensure that your granulator provides excellent, long
service.
The Troubleshooting chapter serves as a guide for identification of most common problems.
Potential problems are listed, along with possible causes and related solutions.
The Appendix contains technical specifications, drawings, schematics, parts lists, and
available options. A spare parts list with part numbers specific to your machine is provided
with your shipping paperwork package. Refer to this section for a listing of spare parts for
purchase. Have your serial number and model number ready when ordering.
Safety Symbols Used in this Manual
The following safety alert symbols are used to alert you to potential personal injury hazards.
Obey all safety messages that follow these symbols to avoid possible injury or death.
DANGER! DANGER indicates an imminently hazardous situation that, if not avoided,
will result in death or serious injury.
WARNING! WARNING indicates a potentially hazardous situation or practice that, if
not avoided, could result in death or serious injury.
Caution!
CAUTION indicates a potentially hazardous situation or practice that, if
not avoided, may result in minor or moderate injury or in property damage.
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-Notes-
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Chapter 2: Safety
2-1 How to Use This Manual
Use this manual as a guide and reference for installing, operating, and maintaining your
granulator. The purpose is to assist you in applying efficient, proven techniques that enhance
equipment productivity.
This manual covers only light corrective maintenance. No other maintenance should be
undertaken without first contacting a service engineer.
The Functional Description section outlines models covered, standard features, and safety
features. Additional sections within the manual provide instructions for installation, pre-
operational procedures, operation, preventive maintenance, and corrective maintenance.
The Installation chapter includes required data for receiving, unpacking, inspecting, and setup
of the granulator. We can also provide the assistance of a factory-trained technician to help
train your operator(s) for a nominal charge. This section includes instructions, checks, and
adjustments that should be followed before commencing with operation of the granulator.
These instructions are intended to supplement standard shop procedures performed at shift,
daily, and weekly intervals.
The Operation chapter includes a description of electrical and mechanical controls, in
addition to information for operating the granulator safely and efficiently.
The Maintenance chapter is intended to serve as a source of detailed assembly and
disassembly instructions for those areas of the equipment requiring service. Preventive
maintenance sections are included to ensure that your granulator provides excellent, long
service.
The Troubleshooting chapter serves as a guide for identification of most common problems.
Potential problems are listed, along with possible causes and related solutions.
The Appendix contains technical specifications, drawings, schematics, parts lists, and
available options. A spare parts list with part numbers specific to your machine is provided
with your shipping paperwork package. Refer to this section for a listing of spare parts for
purchase. Have your serial number and model number ready when ordering.
Safety Symbols Used in this Manual
The following safety alert symbols are used to alert you to potential personal injury hazards.
Obey all safety messages that follow these symbols to avoid possible injury or death.
DANGER! DANGER indicates an imminently hazardous situation that, if not avoided,
will result in death or serious injury.
WARNING! WARNING indicates a potentially hazardous situation or practice that, if
not avoided, could result in death or serious injury.
Caution!
CAUTION indicates a potentially hazardous situation or practice that, if
not avoided, may result in minor or moderate injury or in property damage.
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2-2 General Safety Information
These Remote Proportioning Valves (or RPVs) are designed to provide safe and reliable
operation when installed and operated within design specifications, following national and
local safety codes.
To avoid possible personnel injury or equipment damage when installing, operating, or
maintaining this equipment, always use good judgment and follow these safe practices:
; Follow all SAFETY CODES.
; Wear SAFETY GLASSES and WORK GLOVES.
; Have a STABLE WORK PLATFORM when installing or maintaining RPVs
mounted above floor level.
; Disconnect and/or lock out power before servicing or maintaining the RPV (Remote
Proportioning Valves).
; Use care when LOADING, UNLOADING, RIGGING, or MOVING this
equipment.
; Operate this equipment within design specifications.
; OPEN, TAG, and LOCK ALL DISCONNECTS before working on equipment. It
is a good idea to remove the fuses and carry them with you.
; Make sure the machinery is properly GROUNDED before you switch on power.
; When welding in or near this unit be sure VENTILATION is ADEQUATE.
PROTECT adjacent materials from sparks. An approved FIRE EXTINGUISHER
should be close at hand and ready for use if needed.
; Do not jump or bypass any electrical safety control.
; Do not restore power until you remove all tools, test equipment, etc. and the unit is
fully reassembled.
; Only PROPERLY TRAINED personnel familiar with the information within this
manual should work on this equipment.
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2-3 Warnings and Precautions
The installation, operation and maintenance of this equipment is to be conducted in
accordance with all applicable work and safety codes for the location where it is used. This
may include, but is not limited to, OSHA, NEC, CSA, SPI, and any other local, national, and
international regulations. In addition, the following specific work rules must be observed:
; Always keep these operating instructions on hand, and follow them when performing
installation, operation, and maintenance procedures. If the instructions become
damaged or unreadable, additional copies may be obtained from the manufacturer’s
Parts Department.
; Only qualified personnel can work on or with this equipment.
; Work only with approved tools and devices.
; The electrical power and compressed air must be disconnected when performing
maintenance or service. If the unit is installed with a power cord that can be
unplugged, be sure to unplug it. If the unit is permanently wired to a power main, a
fused power disconnect must be installed to allow the disconnect to be locked in the
“OFF” position. It is advisable to remove the disconnect fuses and carry them with
you.
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Chapter 3: Functional Description
3-1 Models Covered in This Manual
This manual offers a general reference for the installation and operation of the Remote
Proportioning Valve (RPV) with control configurations A, B, C, and D.
Material inlets and outlet sizes range from 1.5” to 2.5”.
3-2 General Description
The Remote Proportioning Valve is an efficient and economical means to proportion two
different free-flowing granulated materials in a material conveying system. The most
common application is mixing virgin and regrind materials in a plastic processing operation.
The design of the Remote Proportioning Valve lends itself to use in both central and
machine-side conveying systems. The RPV also can turn a standard hopper loader or
anyone’s vacuum hopper into a proportioning unit.
Mounting of a Remote Proportioning Valve can be at a convenient location away from the
hopper or loader or on the material inlet tube of a vacuum hopper or hopper loader.
Two urethane plungers operated by compressed air are positioned in a central vacuum
chamber to provide airflow control between two separate material conveying lines.
The operator controls the positioning of the plungers and dictates the percentage of the two
materials to be delivered through a single hose to a material receiver.
Plunger operation can be governed by a variety of control alternatives, depending on the
installation.
3-3 How it Works
The Remote Proportioning Valve proportions two free-flowing dry materials into a single
vacuum conveyed stream. It can be mounted some distance from or directly on the vacuum
receiver. Two material inlets lead into a central vacuum manifold. Compressed air operated
plunger valves switch the vacuum supplied by a hopper loader or central system between two
material pick-up devices.
Switching between the inlets at timed intervals creates a known mixture of virgin and regrind
materials. The mixture can have a minimum accuracy of 5%, depending on how controlled
the set-up of the Remote Proportioning Valve is.
The controls are set up on a timing cycle. The Material A plunger is opened to the vacuum
stream for an adjustable period of time, and then closes. The Material B plunger opens
immediately and conveys the second material for an adjustable period of time. By adjusting
these intervals, the proportioning is controlled.
Under ideal conditions with identical total resistance in both material hoses and the Material
A and B timers set at 10 and 5 seconds respectively, a 2-to-1 mixture is delivered to the
vacuum receiver.
Under actual conditions, total resistances will not be identical. Two materials with different
conveying characteristics, such as regrind and virgin, conveyed from differing pickup devices
over differing distances, are not be conveyed at the same rate.
To ensure a mixture of known proportions, a weight test as described in Section 5-4 on page
24 should be performed for each application.
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3-4 Typical Features and Components
The RPV is available with a variety of control choices designed to suit your particular
operation.
RPV-A
The A model Remote Proportioning Valve is designed exclusively for use with the Autoload
Hopper Loader.
RPV- B and D
The B and D model RPV’s are designed for use with central vacuum systems. These models
will convert any existing vacuum hopper into a proportioning unit, regardless of
manufacturer.
The RPV – B uses 110 VAC supply voltage. The RPV – D is designed to be used outside of
North America with 220 VAC supply voltage.
RPV - C
The RPV-C model is designed to convert existing 9953 and 9963 Hopper Loaders into
proportioning units.
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Chapter 4: Installation
4-1 Mounting the RPV
The RPV can be mounted to a machine, on the floor, or on a wall. The optional floor stand
provides installation location flexibility. The RPV can be used with more than one machine
by switching hoses and positioning the floor mounted RPV in a convenient place.
Wall Mount Installation
This type of installation uses the optional wall mounting bracket to mount the Remote
Proportioning Valve to a convenient wall, pipe, or other structural member. Use the
following procedure to install the RPV using the wall-mount configuration: (See Figure 1 for
more information.)
1. Select a location for the RPV that allows access to the clean-out and viewing hatch.
Plan ahead for a spot where the two material supply hoses and the material delivery
hose do not interfere with your workspace or create a tripping hazard.
2. Secure the wall bracket to a suitable wall, beam, etc. that can support 250 lbs. of
weight hanging from it.
3. Prepare the RPV for installation by removing the four bolts that attach the single
outlet tube to the valve body.
Note: The outlet tube is embedded in silicone sealant and should stick to the valve
body during installation. Do not pull them apart. If the seal between the outlet
tube and the valve body fails, apply a new bead of silicone sealant before
mounting the RPV.
4. Insert the RPV outlet tube through the hole in the bracket and secure it with the
longer ¼-20 x 1” bolts and the flat and locking washers provided.
5. Connect the RPV material outlet tube to the vacuum receiver using flex hose and
hose clamps.
6. Connect the two material inlet tubes to the pickup wands with flex hose and hose
clamps.
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Figure 1: Wall-Mount Configuration
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Floor-Mount Installation
Use the following procedure to install the RPV using the floor stand: (See Figure 2 for more
information.)
1. Assemble the stand by inserting the standard into the floor plate and tightening the
set screw.
2. Complete the assembly by following steps 3 throuh 6 on page 12.
3. Position the floor stand so the clean-out and inspection hatches are accessible and the
material hoses do not interfere with workspace or create a tripping hazard.
Figure 2: Floor-Mount Configuration
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Machine-Mount Installation
In this installation, the RPV is mounted directly to the material inlet of the hopper loader or
vacuum hopper it will serve. The hopper loader or vacuum hopper inlet tube provides the
support for the RPV.
WARNING! Make sure that the hopper loader or vacuum hopper inlet can support the
weight of the RPV (approximately 10 lbs.) and any unsupported material
supply hose. A properly-installed hopper loader or vacuum hopper can
support 250 lbs. of downward force. If you are installing your RPV on
equipment from another manufacturer, consult them for advice on support
capabilities.
1. Check the RPV single outlet tube diameter and the hopper loader inlet size to be sure
you have the necessary coupler and transition tube (if needed) to connect the RPV to
the hopper inlet.
2. Chamfer and smooth the hopper loader or vacuum hopper inlet tube to prevent
damage to the O-rings inside the tube coupler.
3. Apply silicone lubricant or equivalent to the inside of the tube coupler to ease
insertion.
4. Insert the single material outlet tube into the tube coupler past the O-ring. Be careful
to avoid damaging the O-ring.
5. Slide the RPV onto the hopper loader or vacuum hopper with a side-to-side motion.
Be sure the tube passes the O-ring for an air-tight seal. Avoid damaging the O-ring.
6. Tighten the set screws in the tube coupler to lock the RPV in place.
7. Attach the material pick-up wands to the RPV inlet tubes using flex hose and hose
clamps. Route the material conveying hoses so they don't interfere with workspace or
create a tripping hazard.
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4-2 Installing the RPV Controls
DANGER! Disconnect and lock out power before working on equipment. Do not
reconnect electric power until the installation is complete, the work has
been checked, and all tools are removed, and all safety devices are
activated. All electrical work must conform to all codes in effect at the
installation site.
Installing the RPV-A Autoload Knob Box Control
If your RPV has the RPV-A control package, use the following procedure to install it:
1. Disconnect and lock out power to the Autoloader Hopper Loader.
2. Wire the RPV Material A and B solenoids to the Autoloader Hopper Loader control
box using 16AWG wire. See Figure 3.
3. Remove Jumper W3 installed between Terminals 13 and 14 on Terminal Block TB1
in the Autoloader Hopper Loader control box.
Note: The knob box control will not function properly unless you remove this jumper.
4. Toggle the power switch on the Autoload Hopper Loader to the ON position. This
switch must be ON to use the Knob Box Control as a remote ON/OFF switch.
5. Plug the white logic plug connected to the RPV knob box into the receptacle marked
J2 on the left side of the Autoloader control enclosure. See Figure 4 on page 17.
6. Re-connect power.
Figure 3: RPV-A to Autoloader Wiring Diagram
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Figure 4: Knob Box Assembly
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Installing the RPV-B and RPV-D Standalone for Central Vacuum Systems
This control configuration is used to convert a central system vacuum hopper into a
proportioning vacuum hopper.
The stand-alone control can be used in systems with 24 VDC or 110 VAC T-valve solenoids.
The RPV-B requires an external 110/60/1 VAC power supply. The RPV-D requires a 220/50-
60/1 power supply and the proper plug and power cable (supplied by customer). The power
supply can be provided through a grounded duplex plug or the control can be connected to a
power main (where codes permit).
If your RPV has the RPV-B or RPV-D control package, use the following procedure to install
it: (See Figure 5 for more information.)
1. Remove the cover from the Standalone control enclosure. Turn it over to gain access
to the eight-pin socket at the base of the timer. (See Figure 6 on page 19.)
2. Using #14AWG leads, wire terminals three (3) and six (6) to Solenoid 1, material A,
located in the RPV. Splice the leads together within the RPV shroud.
3. Using #14AWG leads, wire terminals four (4) and five (5) to solenoid 2, material B,
located within the RPV. Splice the leads together within the RPV shroud.
4. Using #14AWG leads, wire terminals one (1) and eight (8) to the existing sequence
tee valve.
5. Replace the cover of the enclosure and tighten the screws.
Figure 5: RPV-B or RPV-D Standalone Connection Diagram
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Figure 6: Standalone Junction Box Assembly
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Installing the RPV-C 9953 and 9963 Hopper Loader Control
Use this control configuration to convert an existing 9953 or 9963 hopper loader into a
proportioning hopper loader. The circuit board within these hopper loaders contains the
circuitry necessary to control a Remote Proportioning Valve.
Wire the solenoids in the Remote Proportioning Valve as shown in Figure 7. Use #18AWG
wire for the solenoid connections.
If your RPV has the RPV-C control package, use the following procedure to install it:
1. Connect Solenoid 1, Material A to Terminal 7 on 2TB.
2. Connect Solenoid 2, Material B to Terminal 8 on 2TB.
3. Wire the solenoid common wires to Terminal 10 on 2TB.
Figure 7: RPV-C to 9953 or 9963 Connection Diagram
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Chapter 5: Operation
The RPV can be controlled by one of three different controls. See Chapter 4: Installation for
installation instructions.
• Knob box — Used with Autoloader hopper loaders. This control is supplied with
Model RPV-A.
• Stand-Alone control — Used with central vacuum system vacuum hoppers. This
control is supplied with models RPV-B and RPV-D.
• Hopper loader control — Used with 9953 and 9963 hopper loaders. The existing
control box for these models has the circuitry to control model RPV-C Remote
Proportioning Valves already installed.
5-1 Knob Box Operation
Knob box controls are used with Autoload Hopper Loaders and are supplied with the RPV-A.
The Knob Box has two knobs, a power switch, and a power indicator light. Install the knob
box as described in Section 4-2 on page 16.
Ratio Knob
The knob labeled RATIO controls the relative delivery proportion of Material A to Material
B, typically virgin and regrind. This knob may be adjusted in a range from all Material A and
no Material B to no Material A and all Material B.
These ratios are approximate. For a known proportion, use the weight test procedure in
Section 5-4 on page 24.
Cycle Seconds Knob
The knob labeled CYCLE SECONDS controls the total length of each proportioning cycle.
This knob may be adjusted from zero (0) to twenty (20) seconds to fine-tune the
proportioning operation to the convey time of the vacuum receiver being loaded.
For example, if the cycle time is 20 seconds and the Ratio knob is at 50/50, Material A will
convey for 10 seconds and Material B will convey for 10 seconds. The cycle repeats
automatically.
Power Switch and Indicator
The power toggle switch can be used to turn the Autoload Hopper Loader On and Off if the
power switch on the Autoloader is ON. The POWER ON light is illuminated when power is
applied. The knob box is supplied with twelve (12) feet of cable and can serve as a remote
On/Off switch.
Note: The knob box and Autoloader hopper loader power switches must both be ON
for the loader to operate.
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5-2 Standalone Control Operation
The Stand-Alone Control is provided with RPV models B and D and is used with central
vacuum system operated vacuum hoppers. The Stand Alone control box has these features:
Power Switch
The power switch on the stand-alone box must be in the ON position during operation. If the
power switch is turned off during operation, the RPV will stop conveying and the central
vacuum system will sense a high vacuum condition and initiate a blowback cycle.
Fuse Holder
The 2-amp fuse for the Stand-Alone Box is conveniently located on the faceplate of the
enclosure and can be easily replaced. Keep a spare fuse on hand.
Conveying Time Range Selector Potentiometer
The conveying time range can be set in seconds, minutes, hours, or tens of hours by turning
the unit selector potentiometer (or pot) located in the lower right corner of the timer face.
Timer Dial Increment Selector Potentiometer
The timer dial increments may be set by turning the increment selector potentiometer (or pot)
located in the lower left corner of the timer face.
Material A Timer
The conveying time for Material A is controlled by dialing the orange or ON axial dial to the
desired time.
Material B Timer
The conveying time for Material B is controlled by dialing the yellow or OFF radial dial to
the desired time.
Note: Due to the variance of flow characteristics between different materials, the
ratio set by the two material dials will not necessarily provide the same ratio of
material. Some adjustment of convey times may be necessary to achieve the
desired mixture. See Section 5-4 on page 24 for an explanation and a method
of determining and tuning actual conveying rates.
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5-3 Hopper Loader Conversion Operation
The RPV-C converts 9953 and 9963 hopper loaders into proportioning hopper loaders using
the controls included with existing AEC models.
If you are familiar with the operation of 9955 and 9965 proportioning hopper loaders, the
RPV-C is operated in the same manner. Adjust the potentiometers in the control enclosure as
you would with a 9955 or 9965. Refer to the Operation and Installation Manual supplied with
your existing proportioning hopper loader for complete information.
If you are not familiar with the proportioning feature available in 9953 and 9963 Hopper
Loaders, read the following for the adjustment procedure and refer to Figure 8.
Figure 8: Control Box Adjustment Diagram
DANGER! The adjustment procedure described below involves working inside the
control box. Dangerous electrical current may be present during
potentiometer adjustment. Only qualified, safety-conscious personnel may
make these adjustments.
The adjusting potentiometers (or pots) are located in the hopper loader control box. Pots 1, 2,
and 3 control the pulse, blowback, and vacuum times. These pots have already been adjusted
to your application, and need no further adjustment.
Pots 4 and 5 are used to control the Remote Proportioning Valve. These thirty-turn pots
control a twenty-second maximum length proportioning cycle that runs independently of the
conveying (Vacuum, Pot 3) time.
Turn pots 3 and 4 clockwise to increase the respective material ON times. Turn them counter-
clockwise to reduce the material ON times.
Example 1
If both Pots 3 and 4 were turned to their maximum setting, each material would be conveyed
for ten seconds; alternating until the convey (Vacuum pot 3) cycle times out. The
proportioning cycle time is at its maximum length (20 seconds). If the conveying cycle is set
at sixty (60) seconds (three 20 second proportioning cycles), Materials A and B will alternate
ON three times a cycle for ten seconds each, creating a 1:1 ratio.
Example 2
If Pot 3 is set at the maximum setting and Pot 4 is turned to a middle setting, Material A
would be conveyed for ten seconds and Material B would convey for five seconds. The
resulting fifteen-second proportioning cycle would repeat four times during a sixty second
convey cycle. This setting would creates a 2:1 proportion ratio under ideal conditions.
Adjust the pots to suit your unique processing requirements, noting the concepts described in
Section 3-3 “How it Works” on page 10. Refer to Section 5-4 on page 24 for instructions on
delivering known proportions.
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Chapter 5: Operation
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5-4 Weight Test for Accurate Proportioning
To get an accurate proportion of regrind and virgin materials, run the test described below to
determine the conveying rate of your particular installation using your materials. The test will
determine the ratio settings needed to deliver the desired mix.
1. Determine the total throughput of the machine. This is equal to the amount (pounds)
of material your processing machine uses in an hour.
2. Weigh out a known quantity of regrind into the container from which the regrind is
conveyed. This amount should be enough to service the processing machine for the
duration of the test.
3. This test should be run for at least fifteen minutes.
4. Set the Remote Proportioning Valve controls to approximate the desired proportions
of virgin and regrind.
5. Note the time and begin processing.
6. Stop processing after at least twenty minutes. Note the total processing time.
7. Weigh the regrind remaining in the container.
8. Determine the amount of regrind that would have been used if the test had been run
for an hour (Lbs. Regrind/Hour). For example, if you tested for fifteen minutes,
multiply by four.
9. Divide the (Lbs. Regrind/Hour) by the (Lbs./hour) throughput figure to determine the
percentage of regrind at the current setting.
10. If the percentage is not acceptable, re-adjust the controls and repeat steps 2 through 9
until the proportions are correct.
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Chapter 5: Operation
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Chapter 6: Troubleshooting
6-1 Introduction
The utmost in safety precautions should be observed at all times when working on or around
the machine and the electrical components. All normal trouble-shooting must be
accomplished with the power off, line fuses removed, and with the machine tagged as out of
service.
The use of good quality test equipment cannot be over-emphasized when troubleshooting is
indicated. Use a good ammeter that can measure at least twice the AC and DC current that
can be encountered for the machine. Be sure that the voltmeter has at least minimum
impedance of 5,000 OHMS-per-volt on AC and 20,000 OHMS-per-volt on DC scales.
Popular combination meters, VOM and VTVM can be selected to provide the necessary
functions.
Before making haphazard substitutions and repairs when defective electrical components are
malfunctioning, we recommend that you check the associated circuitry and assemblies for
other defective devices. It is common to replace the obviously damaged component without
actually locating the real cause of the trouble. Such hasty substitutions will only destroy the
new component. Refer to wiring diagrams and schematics.
Locating mechanical problems, should they occur, is relatively straightforward. When
necessary, refer to the parts catalog section.
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Chapter 6: Troubleshooting
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Problem
Possible cause
Solution
Control is on and working, but
valve does not work.
Faulty compressed air
connection to valve.
Repair connection/replace
connector. Must have
minimum 60 psi.
Inadequate incoming vacuum
signal and voltage.
Locate problem, repair/ replace
as needed.
Loose connection wiring in
control box.
Repair/replace as needed.
Improper shroud solenoid
voltage compared to control
output voltage.
Compare voltage rating of
solenoids in shroud to output
voltage of controls.
Check solenoids in shroud and
replace as needed.
Control does not work.
Inadequate voltage.
Check supply voltage.
Make sure the unit has power.
Repair as needed.
Loose control wiring in control
box.
Sudden loss in conveying rate.
Possible loss of up to
Control malfunction.
Repair as needed.
Clean out valve.
Valve jammed with material.
Inadequate air pressure.
20% conveying rate compared to
non- proportioning unit.
Correct as needed. Minimum
60 psi required for operation.
Worn plungers.
Replace plungers (Part No.
W00533565).
Clogged filter hopper.
Clean or replace filter.
Excessive vacuum leaks/ loose
connections to valve.
Repair/replace as needed.
Worn cover seal.
Repair/replace as needed.
Plungers move slowly, stick, or
do not seal properly.
Inadequate air pressure.
Correct as needed. Minimum
60 psi required for operation.
Inadequate lubrication of air
cylinder.
Lubricate air cylinder.
Solenoids are malfunctioning.
Worn/malfunctioning plungers.
Repair/replace as needed.
Repair/replace plungers as
needed.
Sticking plungers.
Replace air cylinder.
Consult factory.
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Chapter 6: Troubleshooting
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Chapter 7: Appendix
7-1 Customer Satisfaction Warranty Program
The manufacturer warrants all equipment manufactured by it to be free from defects in
workmanship and material when used under recommended conditions. The Company’s
obligation is limited to repair or replace FOB the factory any parts that are returned prepaid
within one year of equipment shipment to the original purchaser, and which, in the
Company’s opinion, are defective. Any replacement part assumes the unused portion of this
warranty.
This parts warranty does not cover any labor charges for replacement of parts, adjustment
repairs, or any other work. This warranty does not apply to any equipment which, in the
Company’s opinion, has been subjected to misuse, negligence, or operation in excess of
recommended limits, including freezing or which has been repaired or altered without the
Company’s express authorization. If the serial number has been defaced or removed from the
component, the warranty on that component is void. Defective parts become the property of
the warrantor and are to be returned.
The Company is not liable for any incidental, consequential, or special damages or expenses.
The Company’s obligation for parts not furnished as components of its manufactured
equipment is limited to the warranty of the manufacturers of said parts.
Any sales, use, excise, or other tax incident to the replacement of parts under this warranty is
the responsibility of the purchaser.
The company neither assumes nor authorizes any other persons to assume for it any liability
in connection with the sale of its equipment not expressed in this warranty.
Many types of the manufacturer’s equipment carry an additional one-year service policy.
Consult your sales representative for specific details.
7-2 Technical Specifications
Electrical Requirements
Remote Proportioning Valves are available with standard voltage requirements of 110/60/1
and 220/60/1. They are offered with control voltages of 110 VAC, 220 VAC, and 24 VDC.
RPV solenoids consume 7 watts each at 110 VAC.
Compressed Air Consumption
Your Remote Proportioning Valve requires a 60 to 80 psi supply of clean, dry, compressed
air. The maximum SCFM required is .5. The connection size is 1/8” NPT.
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Chapter 7: Appendix
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7-3 Drawings and Diagrams
RPV Dimensions
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Chapter 7: Appendix
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RPV Assembly Drawing and Parts Breakdown
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7-4 Technical Assistance
Parts Department
[
]
[
]
Call toll-free 7am–5pm CST 800 423-3183 or call 630 595-1060
The Parts Department is ready to provide the parts to keep your systems up and running. Our
replacement parts ensure operation at design specifications. Please have the model and serial
number of your equipment when you call. Consult the Customer Parts List included in your
information packet for replacement part numbers.
Service Department
[
]
[
]
Call toll-free 8am–5pm CST 800 233-4819 or call 630 595-1060; Emergencies after 5pm
[
]
CST, call 847 439-5655
Our qualified service department is ready to help. Service contracts are available for most of
our products.
Sales Department
[
]
Call 630 595-1060 Monday–Friday, 8am–5pm CST
Our products are sold by a world-wide network of independent sales representatives. Contact
our Sales Department for the name of the sales representative nearest you.
Contract Department
[
]
Call 630 350-7283 Monday–Friday, 8am–5pm CST
Let us install your system. The Contract Department offers any or all of these services:
project planning; system packages including as-built drawings; equipment, labor, and
construction materials; union or non-union installations; and field supervision.
Remote Proportioning Valve
Chapter 7: Appendix
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