Grindmaster LCD2 1 User Manual

LIQUID COFFEE DISPENSERS  
LCD2-1 & LCD2-3  
OPERATIONS MANUAL  
INSTALLATION  
WATER INLET CONNECTION  
The following is required for water hook-up:  
A quick disconnect water connection or enough coiled tubing so the machine can be moved for cleaning underneath. (required for NSF  
approved water hook-up)  
A 1/4" male flare adapter is provided (packed inside the drain tray) to be attached by the installer to the back of the machine for hook-up  
to water supply.  
Installation to a water filter system is required to prevent lime and scale build up in the machine.  
Water pipe connections and fixtures directly connected to potable water supply shall be sized, installed, and maintained in accordance  
with Federal, State, and Local codes. (required for NSF approved water hook-up)  
Equipment is to be installed with adequate backflow protection to comply with applicable Federal, State, and local codes. (required for  
NSF approved water hook-up)  
WATER HOOK-UP  
1. Install the (2) front 4" legs to provide approximately 1/2" clearance with the bottom of the machine.  
2. Install drain tray bracket to the front of the machine by sliding the bracket between the front 4" legs and the bottom of the machine.  
The bracket should self locate with screw heads on the bottom of the machine. Tighten the front 4" legs to secure the drain tray bracket.  
3. Install the (2) back 4" legs and tighten.  
4. Install the plastic drain tray onto the drain tray bracket. (Note: The drain tray is provided with a removable plug to allow for plumbing the  
drain tray to a drain.)  
5. Connect a flexible water supply hose to 3/8-18 NPT connector in rear. Ensure the water supply hose has sufficient length to allow the  
machine to be moved for cleaning or service. Supplying hot water to the machine will greatly increase the capacity of the machine. The  
use of copper tubing is required to prevent rupture when using a hot water supply. A maximum inlet water temperature of 120° F is  
recommended.  
6. Ensure that the water supply to the machine is with 20 to 100psi. Install a pressure regulator if pressure is too high.  
ELECTRICAL HOOK-UP  
Ensure water connection is made to machine before proceeding  
The electrical ratings for your dispenser are located on the serial plate on the outside cabinet. For configuration of three heater models to  
optional wattages, refer to configuration manual 62210 supplied with the machine.  
1. For cord connected models, plug the power cord into an appropriate grounded and dedicated electrical outlet. Go to step 8.  
2. For hard-wired models not supplied with a can electrical cord, the dispenser should be connected to a dedicated circuit with a fused  
disconnect switch or a circuit breaker near the dispenser.  
3. Strain relief knockouts are supplied on the back of the machine chassis for power entry.  
Electrical connections and wiring materials must conform to local codes and/or be in compliance with the National Electric Code  
Use only copper conductors  
4. Remove the access panel located on the upper left side of the dispenser. Note: wiring diagram is on backside of access panel.  
5. Connect the power supply conductors, neutral and ground wire to the appropriate positions on the terminal block located on the upper  
left side of the dispenser. The ground lug is separate from the terminal block. Note: if power supply available does not provide for a  
neutral conductor, a stepdown transformer must be installed to provide the necessary 120 volt power supply for the control circuits.  
Consult factory for assistance.  
6. Install the side access panel.  
7. Flip power supply to machine “ON” at the branch supply disconnect.  
8. Flip power switch to the “ON” position and allow the water tank to fill. The machine will make a subtle hissing sound while filling. Allow  
3-4 minutes for fill time depending on water pressure.  
9. After the water tank has completed the fill cycle, the green Ready light located on the front of the dispenser should extinguish signifying  
that the heating element has been activated. Allow 10-60 minutes for the Ready light to illuminate signifying the water tank has  
reached operating temperature. (Note: Heatup time is dependent on water inlet temperature and input wattage to the machine.)  
Attention: This machine employs an interlock switch to disable the dispense and fill circuits when the front door is open. Ensure the front  
door is closed while installing or operating the machine. A watchdog circuit also monitors the water level in the tank and will disable the  
machine if the water level in the tank is not normal within (5) minutes of fill time. The machine will require power to be reset to clear the  
watchdog timeout.  
BAG-IN-BOX HOOK-UP  
Place bag-in-box containers inside the cabinet behind the front door. Connect the quick connect fitting to each bag-in-box.  
After connecting the bag-in-box, flip the water switch located behind the front door to the “OFF” position and flip the concentrate switch to  
the “ON” position.  
Activate the appropriate dispense switch on the front of the door in order to prime the concentrate lines with product. Continue to activate  
the dispense switch until concentrate is dispensed from the appropriate dispense spout.  
Repeat steps for other dispense spout.  
LCD2-1 & LCD2-3  
BAG-IN-BOX HOOK-UP (cont.)  
• Flip water switch back to “ON” position.  
• Close front door and ensure that both water and product are dispensed simultaneously  
HOW TO DISPENSE A CUP OF COFFEE  
Warning: Do not use cups over 6 3/4” (15.2 cm) tall with this machine. Use of cups over this height could result in  
severe burns and injury.  
On models with manual dispense switches:  
• Place a cup under the selected drink dispense nozzle.  
• Push and hold dispense switch until cup is full and then release switch.  
On models with portion control dispense switches:  
• Place a cup under the selected drink dispense nozzle.  
• Push button for one second, then release to dispense one serving.  
Note: Portion may be cancelled by push and release of the switch.  
ADJUSTMENTS  
PORTION ADJUSTMENT (Portion control units only)  
• Place a cup under the selected drink dispense nozzle.  
• Press and hold the desired dispense switch and press and release the manual top-off button to activate the programming sequence.  
• After a 10 second time delay, the machine is triggered into program mode and will begin dispensing.  
• Continue pressing the button until cup is full, then release the switch to prevent overfill. The elapsed portion dispense time is saved to  
memory and will remain until the dispense switch is reprogrammed.  
• Check the portion size by placing an empty cup under the desired dispense nozzle, then press and release the dispense switch. The  
machine will dispense the preprogrammed portion size.  
• If the portion size is incorrect, repeat steps 1, 2, 3, 4 & 5 until the desired portion size is achieved.  
THERMOSTAT ADJUSTMENT  
Note: The thermostat range is approximately 160° to 200°F (71.11°C to 93.33°C). The tank temperature is factory set at 190°F (87.78°C), making  
beverage temperature slightly lower than 190°F (87.78°C). The factory setting is recommended for liquid coffee based concentrates. Other  
products may require different mixing temperatures. Follow product manufacturer’s recommended mixing water temperature for non-coffee  
products.  
Temperature can be adjusted as follows:  
Tool required: #2 Phillips screwdriver.  
• Unplug machine.  
• Remove the drip pan.  
• Remove the upper splash panel on the front of the machine by removing the (4) Phillips head screws.  
• Remove control panel cover by loosening (2) screws enough to allow keyholes in panel to clear the screw heads.  
• Locate the thermostat adjustment dial on the left side of the control board.  
To adjust the temperature of the water being dispensed, turn the adjustment dial on the control board. (Turn clockwise to increase the water  
temperature or counter clockwise to decrease the water temperature.)  
Caution: Do not force the adjustment dial beyond its 270 degrees of rotation or damage to the control board may occur.  
DRINK STRENGTH ADJUSTMENT (Refer to Figure A)  
TOOLS REQUIRED: #2 PHILLIPS SCREWDRIVER  
Warning: Always disconnect power to the machine before servicing or  
cleaning.  
Risk of electric shock is present which can cause serious injury or death.  
• Dispense a drink to determine if drink is too strong or weak.  
77  
77  
• Turn off power to machine at power switch.  
• Remove front splash panel below dispense heads in front of machine.  
• Locate the mix ratio setting panel directly behind the front splash panel  
(see Figure A)  
• Adjust drink strength by determining the digital setting for the desired  
mix ratio.  
(Note: Clockwise will strengthen product, counterclockwise will  
weaken the product.)  
Figure A  
LCD2-1 & LCD2-3  
Service and Cleaning  
Daily Cleaning Instructions for the LCD Coffee Dispensers  
• Wipe down all stainless steel surfaces of the dispense spout, bag-in-box cabinetry and drip tray areas with a clean soft cloth using a mixture of  
one oz. (28 g) Ivory liquid detergent or equivalent to one gallon (3.8 litre) of fresh water.  
• Follow by wiping down all stainless steel surfaces of the dispense spout and cabinetry with a clean soft cloth moistened with fresh water and  
allow to air dry.  
• Remove drain tray and wash in a three compartment sink with warm soapy water per above concentration until all signs of product residue are  
removed, rinse thoroughly with fresh water and air dry.  
WEEKLY CLEANING INSTRUCTIONS FOR THE LCD COFFEE DISPENSERS  
• Flip water switch (a) to “OFF” position.  
• Remove fitting cap (a) from bag-in-box quick disconnect fitting then remove internal check valve parts by rotating the retaining cap at the  
opposite end of the o-ring end. This will allow free flow of sanitizing solution through the connector and faster cleaning.  
• For Hot Chocolate disconnect BIB fitting and insert Scholle probe sanitizing attachment (not provided).  
• Insert the bag-in-box quick disconnect fitting into a one gallon (3.8 litre) basin of very warm (150°F/65.56°C) soapy water. Use 1/2 oz. (14 g)  
Ivory liquid detergent or equivalent to one gallon (3.8 litre) of water.  
• Push and hold the corresponding dispense switch until clear soapy water is dispensed from the spout.  
• Flush soapy water by repeating steps 3 and 4 using one gallon (3.8 litre) of very warm (150°F/65.56°C) water without soap.  
• Prepare one gallon (3.8 liter) of food grade sanitizing solution in a container per manufacturer’s recommendations and repeat step (4) until  
sanitizing solution is dispensed from the spout. Let sanitizing solution work for 5 minutes, then flush the concentrate line by pushing and  
holding the dispense switch until the sanitizing solution dispenses clear.  
(Note: recommended sanitizing solution is KAY-5 Sanitizer/Cleaner; mix (1) one oz. (28 g) packet of sanitizer powder + 2-1/2 gallons (9.5 litre)  
of warm (approximately 120°F/48.89°C) water to achieve a solution of 100ppm of available chlorine.  
• Remove the bag-in-box connector from the sanitizing solution basin and purge the concentrate line by pushing and holding the dispense  
switch until the concentrate tube runs dry.  
• Flush the concentrate line with fresh water by submerging the bag-in-box connector in a one gallon (3.8 litre) container of fresh tap water and  
activating the corresponding dispense switch for one minute.  
• Re-assemble the bag-in-box connector, then reconnect the bag-in-box connector to a bag-in-box of concentrate.  
• Prime the concentrate line by pushing and holding the dispense switch until concentrate drips from the spout.  
• Flip the water switch to the “ON” position and dispense and discard (2) 6 oz. (168 g) drinks.  
• Repeat all steps for other dispense heads.  
To prepare for shipment: Important - Always completely empty water tank, remove bag in box containers, and purge concentrate lines  
prior to shipping unit.  
LCD2-1 & LCD2-3  
The following procedures must be performed by a qualified service technician.  
TROUBLESHOOTING GUIDE  
Possible Cause  
Problem  
Solution  
• Ensure door is latched closed. Reset  
power to machine to ensure fill circuit  
watchdog timer is reset  
• Consult factory for assistance  
• Check for open heater and replace if  
necessary  
No hot water from dispense head  
• Door is open (An interlock switch disables  
the dispense and fill circuits when the door  
is open)  
• Faulty thermistor  
• Faulty water tank heater  
• Ensure water supply to machine is on and  
reset power to machine. Green Ready  
light off indicates heater is activated and  
tank is heating  
• Ensure switch is in “ON” position  
• Ensure water supply is on then reset  
power to the machine to reset the fill  
circuit watchdog timer  
• Fill circuit watchdog timer has tripped  
• Water switch is in “OFF” position  
• Water supply to machine is turned off  
• Check for flashing diagnostic lights on  
control board  
• Concentrate switch is in “OFF” position  
• Bag-in-box is empty  
• Ensure switch is in “ON” position  
• Ensure bag-in-box is not empty; replace  
with new bag-in-box if empty  
No concentrate is dispensed  
• Bag-in-box connector is pointing up (This  
position can create a partial vacuum in the  
concentrate tube which may prevent product  
from being pumped to the dispense spout)  
• Concentrate pickup tube is kinked  
• Position bag-in-box with connector  
pointing down to provide a positive  
pressure in the concentrate tube  
• Inspect tubing routing and ensure  
concentrate tubing is not kinked  
• Periodically clean and sanitize tubing per  
the Cleaning and Sanitizing procedure  
section in this instruction manual  
• Concentrate pump tubing is clogged  
Machine does not dispense or fill  
• Transformer is blown  
• (Refer to Control Diagnostic diagram)  
Check if green LED on control board is  
illuminated when machine is powered on.  
Green LED indicates that control is  
receiving proper supply voltage from  
transformer. Replace transformer if  
LED does not illuminate.  
• Blown fuse on controller  
• Check fuse and replace if necessary  
Water is cold when dispensed  
• Fill circuit watchdog timer has been activated  
• Ensure water supply to machine is on  
and reset power to machine to reset  
watchdog timer  
• Check if Red “Therm/Fail” LED is  
illuminated. Replace thermistor if LED  
is illuminated.  
• Faulty thermistor  
• Faulty water tank heater  
• Check for “open” heater and replace  
if necessary  
Drink is too weak or strong  
Drink is too hot or cold  
Off taste of coffee  
• Refer to Drink Strength Adjustment  
section  
• Refer to Thermostat Adjustment  
section  
• Poor water quality, to include high chlorine  
level, heavy mineral concentration or stale  
water  
• Addition of a taste and odor filter to  
incoming water  
• Drain water from tank, remove and  
delime. If necessary, flush tank with  
fresh water.  
If you still need help, call our service department at (800) 695-4500 (USA & Canada only) or (502) 425-4776 (Monday through Friday, 8 am - 8 pm EST)  
or an authorized service center in your area. Please have the model and serial numbers ready so that accurate information may be given.  
Prior authorization must be obtained from Grindmaster Corporation’s Technical Services Department for all warranty claims.  
LCD2-1 & LCD2-3  
Models LCD2-1 & LCD2-3 Parts List  
62264  
62265  
71147  
61994  
61128  
61805  
62274  
61108  
68133  
62297  
61822  
62293  
62251  
61191  
62338  
61131  
Controller  
61800-02 - Auto/Remote/3-Portion  
61800-05 - Manual/Remote  
62354 - LCD 2-3- -M models  
*
10 Minute dispense max.  
61999  
62249  
DESCRIPTION  
Part #  
61108  
61128  
61131  
61191  
61800-02  
61822  
61994  
61999  
61805  
62249  
62251  
62264  
62265  
62274  
62293  
62297  
62338  
68133  
71147  
PROBE, WATER LEVEL  
PROBE, THERMISTOR  
RELAY, HEATER  
SWITCH, VACUUM 14” BDR  
CONTROLLER, AUTO/REMOTE/3-PORTION  
TUBING, 3/16 ID PUMP TUBING  
PUMP, 3 ROLLER  
CAP, LCD DISPENSE SPOUT  
FITTING, QCD LIQUIBOX  
RESTRICTOR, LCD SPOUT  
VALVE, DUMP  
ELEMENT, HEATING 240V 5000W  
ELEMENT, HEATING 240V 6600W  
DIFFUSER, SPOUT  
TUBING, 1/8 ID PUMP TUBING  
VALVE, INLET 2.5GPM  
PUMP, 2 ROLLER  
FITTING, SCHOLLE “T” BIB  
GROMMET, PROBE  
Grindmaster® Coffee Grinders and Brewers • PrecisionBrew™ Brewing Systems • Espressimo® Espresso Machines  
Crathco® Hot Beverage Dispensers • Crathco® Cold and Frozen Beverage Dispensers • AMW Coffee and Tea Systems  
Tel (502) 425-4776 • Fax (502) 425-4664 • 1-800-695-4500 (USA & Canada only)  
P.O. Box 35020 • Louisville, KY 40232 • USA  
© Grindmaster Corporation, 2006  
PRINTED IN USA  
0307 Form # AM-330-04  
Part # 62280  

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