Pitco Frialator Burner L80 029 User Manual

IMPORTANT FOR FUTURE REFERENCE  
Please complete this information and retain these  
instructions for the life of the equipment:  
Model #: __________________________  
Serial #: __________________________  
Date Upgraded: ___________________  
Technician: _________________________  
Installation Instructions for the  
PITCO  
Self-Cleaning Burner System  
L80-029 Rev 5 10/07  
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Theory of Operation:  
A natural gas burning appliance requires roughly 10 cubic feet of air to properly combust a single cubic foot of  
gas. Minute airborne particles entrained during this process pass through the combustion system and are  
incinerated. However, some particles may be trapped within the combustion system, building up over time,  
causing an eventual decrease in the operational efficiency of your appliance. The rate at which this build up  
may occur varies from kitchen to kitchen and is greatly influenced by the environment (breading, flour etc.) and  
kitchen processes (i.e. cleaning). Historically, frequent cleaning of burners and other combustion related  
components has been the only way to insure optimal efficiency of your fryer. The Pitco Self Cleaning Burner  
System (SCBS) will minimize the cost and inconvenient down time of frequent cleaning of combustion system  
components. Each morning when the appliance is turned on, a small amount of gas is momentarily diverted  
into a runner tube, which, after passing by the pilot, ignites and causes a short but effective light back at the  
main burner orifice. This brief flame bath cleans the inside of the burner face by incinerating any foreign matter  
that has accumulated from the previous day’s operation.  
The Pitco Self Cleaning Burner System is designed to help maintain proper operation and efficiency of your  
appliance’s combustion system by minimizing the build up of any foreign material inside the burner housings.  
Proper installation of this upgrade and periodic maintenance of the appliance are critical to safe, reliable and  
efficient operation.  
Tools required to perform this upgrade:  
5/16” (8 mm) wrench  
1 1/16” wrench  
Wire cutters  
5/16” (8 mm) nut driver  
7/16“ (12 mm) wrench  
1/2“ (13 mm) wrench  
11/16” (18 mm) wrench (or socket)  
7/8” (23 mm) wrench  
Cordless screwdriver w/ 5/16” bit  
Phillips screwdriver  
Small flat blade screwdriver  
3/16” (5 mm) hex key  
Pipe joint compound or teflon  
tape  
Before you begin:  
Verify that you have all the parts for the model that you are upgrading by checking the kit number and contents  
against the exploded view drawings in the back of these instructions.  
WARNING  
The power supply to the appliance MUST be disconnected before performing this procedure.  
WARNING  
Ensure that the gas supply to this appliance is turned OFF before performing this procedure.  
WARNING  
Drain the tank and ensure that appliance has cooled to room temperature  
before performing this upgrade. DO NOT work on a hot appliance or an  
appliance containing hot cooking medium; serious personal injury may occur.  
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Follow this procedure for Installation of Self Cleaning  
burners and SCBS arm:  
a. Disconnect the control harness from the main gas  
valve and tuck it out the way to avoid damaging the  
harness during this procedure.  
b. If your appliance has a solid-state control (or  
auxiliary thermostat) behind the door, remove it at  
this time. With a 5/16” nut driver remove the two  
self-threading screws that mount the control to the  
appliance, disconnect the control harness and tuck  
it out of the way to avoid damaging the harness  
during this procedure. Be sure to store the control  
in a safe place to avoid accidental damage to it.  
c. Using a 7/16” wrench, remove the pilot tubing from  
the gas valve by turning the brass fitting counter-  
clockwise. There is no need to remove the pilot  
from the burner assembly.  
WARNING  
Ensure that the tank contents have been  
drained before executing this step!  
d. Using an 11/16” wrench or socket, loosen and  
remove the drain valve nut and washer, and  
remove the blue drain valve handle. Note: You may  
want to place the nut and washer back on the valve  
stem for safekeeping.  
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e. Using a 1 1/16” wrench and a 7/8” wrench, loosen  
the brass fitting on the top of the gas valve and  
disconnect the gas valve from the manifold inlet.  
This will allow you to drop the gas valve down  
and keep it out of the way during burner  
replacement.  
f. Using a 5/16” wrench, nut driver or screw gun bit,  
remove all burners by removing the (2 ea.) self  
threading screws holding them into the burner rack.  
Retain these for reinstallation of the new burners.  
Note: On models MG2 and SGH50, it will be  
necessary to remove the air collars surrounding the  
burner head.  
WARNING  
Be sure to keep the removed burners separate from  
burners supplied with the upgrade kit. The existing  
burners WILL NOT work with the Pitco Self-Cleaning  
Burner System. DO NOT attempt to use the old burners  
with the Pitco Self-Cleaning Burner System: an unsafe  
condition may occur.  
g. Replace the burners to the LEFT of the pilot with  
burners supplied with the Pitco Self-Cleaning  
Burner System upgrade kit, securing them with the  
fasteners removed and retained in step f.  
NOTE: Pre-tap the holes on mounting bracket on  
the SCBS runner arm with the two self tapping  
screws provided in the kit before you install it.  
h. With the ports FACING INWARD, insert the SCBS  
Arm into the space between the burner venturis  
and orifice holders of the newly installed burners.  
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i. Capture the remaining burners on the SCBS Arm in  
the same manner as in step h, and secure them into  
the appliance, taking care not to strip the pre-threaded  
holes.  
j. Secure the SCBS Arm to left side of the burner to the  
right of the pilot using two 10 X 24 self-threading  
screws provided with the Pitco Self-Cleaning Burner  
System Upgrade Kit.  
The SCBS Arm should now be mounted properly and securely.  
Inspect your work to insure that the burners are installed correctly.  
Improperly mounted or poorly aligned burners may result in an  
unsafe condition or poor appliance performance. They should be  
mounted properly on the orifice fittings, facing straight into the  
burner tubes and secured tightly to the appliance.  
Follow this procedure for installation of the SCBS Valve:  
NOTE: The valve type you receive in your kit may differ in appearance slightly from the one shown in these  
instructions.  
a. Re-attach the gas valve to the manifold inlet using a 1  
1/16” wrench and a 15/16” wrench and, with a 3/16” (5  
mm) hex key, remove the plug from the pressure tap  
port on the TOP portion (Outlet Side) of the valve,  
next to the pilot fitting.  
L80-029 Rev 5 10/07  
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NOTE: CE approved models will have a pressure test  
fitting in this location. For CE approved models, remove  
this pressure test fitting using a 7/16” (12 mm) wrench.  
Using a 3/16” (5 mm) hex key, remove the plug from the  
auxiliary pressure tap on the manifold inlet and replace  
it with pressure tap fitting that you removed from the  
TOP (Outlet side) of the valve. Use teflon tape or apply  
pipe joint compound on the threads of the fitting to  
ensure a gas-tight seal.  
b. Remove the straight 1/8” NPT X ¼” compression fitting  
from the U tube end of the SCBS Valve Assembly  
provided with the kit and, with a 7/16” wrench, install it  
into the recently vacated pressure test port on the TOP  
(Outlet Side) of the valve. Use teflon tape or apply pipe  
joint compound on the threads of the fitting to ensure a  
gas-tight seal.  
NOTE: The threads on this fitting (1/8’ NPT and ¼”  
compression) are not interchangeable. Be sure to  
install the NPT side of this fitting into the gas valve.  
Failure to complete this step correctly could damage  
the threads of both the fitting and the pressure test  
port, and may result in gas leakage at this joint.  
c. Remove the 1/8” NPT X 90° ¼” compression fitting from  
the other end of the SCBS Valve Assembly provided  
with the kit and install the orifice tip, also provided in the  
kit, on to the NPT end of the fitting. Insert the orifice end  
of this assembly into the runner tube installed previously  
in this procedure. NOTE: Check the orifice against the  
parts list included in these instructions to insure that it is  
the correct size for the gas type of your appliance.  
d. Mount the SCBS Valve Assembly into the appliance by  
loosely attaching the U tube end of the assembly onto  
the straight fitting that you installed into the TOP (Outlet  
Side) of the gas valve in step b.  
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e. Thread the compression nut on the corrugated tubing  
end of the SCBS Valve Assembly onto the orifice  
assembly that you inserted into the runner tube in  
step c and tighten with a 1/2” (13 mm) wrench.  
f. Install the orifice retainer bracket onto the pilot  
bracket and SCBS Orifice assembly. This will secure  
the orifice assembly into the runner tube.  
g. Tighten ALL joints on the SCBS Valve assembly with  
a ½” (13 mm) wrench. Reinstall the pilot tubing into  
the gas valve.  
h. Reconnect the control harness to the main gas valve,  
and if you removed a Solid State Control earlier in  
this procedure you may re-install it at this time.  
Follow this procedure to prepare and install the  
SCBS Control Board and Harnesses:  
a. Using a phillips head screwdriver, remove the two  
screws that secure front panel and rotate the control  
assembly down. Disconnect the control harness and  
remove the front panel assembly from the appliance.  
(This will not be necessary if your model uses a solid-  
state control). Store the front panel assembly in a safe  
place to avoid damaging the control.  
L80-029 Rev 5 10/07  
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b. Disconnect the wiring harness from the relay board  
mounted behind the front panel and remove the  
relay board and insulation paper. Be sure to retain  
the screws. The existing relay board may or may  
not have a jumper plug as shown. If it does, remove  
it from the old relay board and install it into the  
same position on the “new” SCBS relay board  
provided.  
c. Install the insulation paper provided with the Pitco  
Self-Cleaning Burner System Upgrade Kit onto the  
backside of the SCBS Control Board and mount the  
board in the front panel enclosure, using the same  
screws and holes as the old board. Older revision  
boards will have wires attached to the board for  
the thermal cutout and a two pin connector for  
the valve harness; these wires are not present  
on newer revision boards, which have the  
thermal cutout harness and valve harness  
combined into one single harness.  
OLDER REVISION  
BOARD SHOWN  
NOTE  
It is critical for proper operation that the  
insulation paper is installed. Failure to install  
the insulation paper may cause soldered joints  
on the back of the Control board to short out  
and damage the Control board and/or appliance.  
d. Plug four-pin connector on SCBS Harness into  
SCBS Relay Board and ground as shown, using the  
existing fastener to secure ground cable to the  
appliance chassis. Older revision models will  
have the thermal cutout leads feeding directly  
from the board, a two-pin connector for the  
valve harness and a separate harness for the  
thermal limit assembly. For older revision  
boards, plug the two pin connector on the SCBS  
Valve harness into the SCBS Relay Board and  
ground as shown, using the existing fastener to  
secure ground cable to the appliance chassis.  
Connect the SCBS Thermal Limit Harness  
(supplied with older revision kits only) to the red  
and grey leads on the older revision SCBS Relay  
Board.  
NEW REVISION  
BOARD SHOWN  
OLD REVISION  
BOARD SHOWN  
OLD REVISION  
HARNESS  
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e. If the appliance you are upgrading does NOT have a  
Solid State Control, proceed to step f in this section.  
If the appliance that you are upgrading has a Solid  
State Control, feed the other ends of the SCBS  
Harness through the unused portion of the strain  
relief holding the Solid State Control Harness and  
proceed directly to step h in this section.  
NOTE: If needed, you can carefully nudge open the  
area in the strain relief with a screwdriver to make  
additional room to insert the SCBS harness. Take  
care not damage the harness during this procedure.  
f. Using a 5/16 nut driver, remove the two screws on  
the underside of the front panel that hold the slotted  
bottom on. Remove the slotted front panel bottom;  
this will allow easier access to the cable retainer  
plate. Remove the two screws holding the cable  
retainer plate onto the appliance and remove the  
cable retainer plate, leaving the control cable held in  
place by the square strain relief. Replace the cable  
retainer plate that you removed with the new one  
provided in the kit. Cable retainer plate style varies  
from model to model; the one that came with your kit  
should look exactly like the one that you removed  
with an added hole.  
g. Feed the SCBS harness through the hole in the cable  
retainer plate. Collect and capture all wires in this  
harness into the split grommet provided with the kit  
and install the grommet into hole in the cable retainer  
plate. The installation of the grommet is critical as it  
insures that the wires will not chafe and/or short out  
against the metal edge of the hole in the cable  
retainer bracket.  
h. You may now reconnect the main control harness to  
the SCBS board exactly as it was connected to the  
previous board, re-attach the front panel bottom and  
reconnect, remount and close up the front panel  
assembly.  
L80-029 Rev 5 10/07  
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i. Connect the SCBS Harness to the SCBS Valve as  
shown. The red and violet wires must be connected  
to the vertically oriented tabs on the valve and the  
green (ground) wire must be connected to the  
bottom, horizontally oriented tab on the valve. The  
grey wires will be connected to the Thermal Limit at  
a later point in the upgrade process.  
j. Route the SCBS Harness along the main control  
harness and wire tie it to the control harness. The  
proper wire tie locations are indicated by arrows, see  
photo at right. Trim excess from wire ties.  
k. Mount the Thermal Limit Switch Assembly with  
the flange of the bracket oriented down and facing  
inward toward the tank. The switch terminals will then  
be facing outward toward the front of the appliance.  
Mount the assembly by straddling it on the two  
burners on either side of the pilot and positioned up  
to where the flange on the assembly meets with the  
bottom of the flange on the burner “web”, see photos  
at right.  
l. Fasten the Thermal Limit Switch to the flange on the  
burner web using two self-drilling fasteners provided  
in the Pitco Self Cleaning Burner System Kit.  
Connect the leads of the SCBS Harness to the tabs  
on the Thermal Limit Switch. Re-attach the drain  
handle.  
You have now successfully installed the Pitco Self-Cleaning Burner system. Apply the schematic label  
provided with the kit over the one on the inside of the appliance door. Before proceeding it is highly  
recommended that you now thoroughly check the appliance to insure that the procedure was  
properly followed. Check that all gas joints are tight, all electrical connections are correct, and  
that the appliance is completely and properly reassembled.  
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Follow this procedure to check proper operation of the Pitco Self-Cleaning Burner System:  
WARNING  
Ensure that tank is filled to the level line with oil before turning the  
appliance on. Turning the appliance on with an empty or partially filled tank  
could cause an unsafe condition, which could lead to damage to the  
appliance, property damage or personal injury.  
a. Reconnect the power supply and turn on the gas supply to the appliance.  
b. Energize the unit and check the gas delivery system and Pitco Self-Cleaning Burner System for  
gas leaks by applying liquid leak detector or a solution of soapy water to all gas joints and  
watching for bubbles at the joints.  
c. If you detect bubbles at any gas joint, turn the appliance off, disconnect the power supply and turn  
off the gas supply immediately. Retighten any joints that show signs of leaking and repeat steps a,  
b and c until no leakage is detected. If you do not detect any leaks, proceed to step d.  
d. Turn appliance on and observe its behavior. The appliance will execute a Cleaning Cycle every  
time it is energized from on “OFF” state, so you may turn the appliance off and then on again to  
verify proper execution of the Cleaning Cycle. Refer to the below table to verify proper Cleaning  
Cycle execution  
Event  
Duration  
Indication  
Control Illuminates, pilot sparks and ignites. Pre-Purge  
pulse is initiated.  
Turn appliance “ON”  
N/A  
Pre-Purge Pulse  
Interwaiting period 1  
2 seconds  
5 seconds  
Appliance operates briefly and stops. Pilot remains lit.  
Appliance does not operate. Pilot remains lit.  
Main valve operates, lighting main burners. SCBS valve  
operates, feeding gas to the SCBS Arm. The SCBS arm  
ignites, initiating a brief burn at the main burner orifice of  
each burner.  
The Main and SCBS valves de-energize for this period.  
The pilot remains lit.  
The appliance operates normally and begins to heat up.  
The SCBS Valve remains de-energized until power to  
the appliance is recycled. There is no flame on the  
SCBS Arm. There is no burn at the main burner orifices.  
Cleaning Pulse  
6 seconds  
8 seconds  
N/A  
Interwaiting period 2  
Normal operation  
resumes  
With the Pitco Self-Cleaning Burner System installed, the appliance should behave as outlined in the above  
table. A Cleaning Cycle will execute every time the appliance is turned “ON” from an “OFF” state. The thermal  
cut out switch is designed to disable the appliance if the Self Cleaning Burner System malfunctions and  
remains activated for an extended period of time or if there is a downdraft into the flue or a blocked flue  
situation.  
Follow this procedure to adjust and verify proper operation of an appliance using flue baffles  
(McDonald’s models MG2 and MG2T):  
WARNING  
If the appliance you are upgrading is equipped with flue baffles, it may be  
necessary to adjust the baffle’s opening to restore proper operation of the  
appliance.  
If the model you are upgrading is an MG2 or MG2T, it may be necessary to adjust the flue baffle opening to  
restore proper operation of the appliance’s combustion system. Flue baffles are used when the appliance is  
direct coupled to an exhaust hood, the flue baffle balances the exhaust draw on the combustion system.  
When operating properly, the burners should exhibit light blue flame and generate a mild, consistent roar. It is  
possible to view the burner flame on the center two burners by peeking sideways into the opening on the air  
collars near the pilot. If, during operation the burner flames appear to be lifting or pulsing, the draw of the  
hood may be too powerful and the baffle will need to be adjusted to a more restrictive setting. Lifting or  
pulsing burners can usually be heard when the  
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appliance is in operation, or can be detected visually by watching the burner flame through the air collars. The  
sound of the burners will be inconsistent and the flame may appear to ‘peel’ off of the burner face.  
A certain amount of flame roll out during ignition is normal. However, excessive flame roll out during burner  
operation is abnormal. Excessive flame roll out will cause undue heating in the burner area and will cause the  
thermal cut out switch to trip. If there is significant flame roll out upon ignition or during normal operation, the  
flue baffle setting may be too restrictive and will need to be adjusted to a more open position.  
Determine whether or not the appliance you have upgraded has flue baffles. After performing this upgrade  
procedure, observe the appliance during startup and normal operation. If pulsing burners or extreme flame roll  
out are detected, adjust the flue baffle according to the following  
procedure.  
LESS RESTRICTIVE  
Follow this procedure to verify proper setting of flue baffles  
and adjust if necessary:  
a. Ensure that the appliance is installed properly under the  
hood in the manner in which it is intended to be used.  
Turn the appliance on and allow it to execute the  
cleaning cycle and go into normal operation. Observe  
the operation of the main burners as the appliance  
brings the oil to set point, during idling and during  
cooking operations.  
b. If the burners appear to pulse or the flame is lifting off of  
MORE RESTRICTIVE  
the burner face proceed to step c of this section of these  
instructions. If there appears to be significant roll out  
during ignition or any time during operation, proceed to  
step d of this section of these instructions.  
c. For pulsing/lifting burner flame: Turn the appliance  
off and allow it to cool. Pull the appliance out from under  
the hood and loosen the screws securing the adjustable  
slide plate on the flue baffle. Move the slide plate toward  
the rear of the appliance to a more restrictive position  
and retighten the screws. Repeat steps a and c until no  
pulsing or flame lift is observed.  
d. For excessive flame roll out: Turn the appliance off and allow it to cool. Pull the appliance out  
from under the hood and loosen the screws securing the adjustable slide plate on the flue baffle.  
Move the slide plate toward the front of the appliance to a less restrictive position and retighten the  
screws. Repeat steps a and d until flame roll out is minimized.  
e. Observe burner operation while allowing the appliance to heat up and during hot operation  
(cooking and idling): the flue baffle must be adjusted correctly to allow the appliance to operate  
properly during both (cold) start up and normal (hot) use conditions. It may be necessary to fine  
tune the flue baffle setting for proper operation under both conditions.  
WARNING  
If the flue baffle CANNOT be adjusted properly, the facility must have the  
ventilation system checked immediately to be sure that it is operating within  
normal specifications. After the ventilation system is corrected, the baffle  
setting must be rechecked. Failure to correct ventilation problems or  
properly set flue baffles will result in extremely poor appliance operation  
and possible equipment damage.  
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TROUBLESHOOTING  
Should there be a problem with your appliance, use the following tables to isolate possible faults before calling Pitco  
Technical Support.  
POSSIBLE CAUSES  
CORRECTIVE ACTION  
PROBLEM  
A. Main breaker in OFF position.  
B. Gas supply turned OFF.  
C. Appliance unplugged.  
D. Blown control fuse.  
E. Faulty transformer.  
F. Defective controller.  
A. Tripped hi limit  
A. Turn on Circuit Breaker to appliance.  
B. Turn on gas supply to appliance.  
C. Plug appliance power cord into wall outlet.  
Appliance will not  
run, front panel  
lights are not ON.  
D.  
E.  
F.  
Refer to Service and Parts manual for your appliance to  
properly diagnose and correct these problems.  
A. Depress red button and reset hi limit.  
B. Turn controller on.  
B. Controller is not turned on  
Appliance will not  
run, front panel  
lights are ON.  
SCBS thermal limit switch has  
C.  
C.  
Depress button on thermal limit switch and reset.  
tripped  
Refer to Service and Parts manual to diagnose and correct  
these problems.  
Verify that all wires and harnesses are plugged in properly  
to the correct component.  
D. Faulty temperature probe  
E. Defective controller.  
D.  
E.  
A.  
A.  
Unplugged wire harness.  
Verify that the wiring steps in this instruction have been  
followed correctly. Correct any faulty wiring.  
C. Replace SCBS Board.  
D. Replace SCBS Valve.  
E. Clean debris from SCBS orifice opening.  
B.  
B.  
Improper wiring.  
Appliance is ON, but  
a Cleaning Cycle  
does not execute  
C. Faulty SCBS Board  
D. Faulty SCBS Valve  
E. Clogged SCBS Orifice  
Poorly aligned or faulty SCBS  
Check that the SCBS Lighter arm has been properly  
F.  
F.  
Lighter arm.  
installed. Replace if faulty.  
SCBS energizes  
A. Faulty SCBS Board  
B. Faulty SCBS Valve  
A. Replace SCBS Board.  
B. Replace SCBS Valve.  
beyond normal cycle  
parameters (during  
cooking, idling, etc.)  
A. Pilot tubing is loose.  
B. Pilot is mounted improperly.  
C. Flame sensor is misaligned.  
D. Low Pilot  
A. Ensure pilot tubing is tight and properly connected.  
B. Ensure that pilot is mounted properly.  
C. Ensure that the flame sensor is properly aligned.  
D. Ensure that pilot is adjusted to provide adequate flame.  
Appliance will not  
run, control flashes  
ignition failure  
E
Clogged Pilot orifice  
E
Ensure that pilot orifice is clear of debris.  
F. Damaged or defective Pilot.  
F. Replace pilot if necessary.  
Reset Thermal Limit switch. On models MG2 and MG2T,  
SCBS Thermal Limit switch has  
tripped.  
verify that flue baffles.are properly adjusted per these  
instructions. Check ventilation hood for improper  
G.  
G.  
operation, down draft or blockage.  
Appliance will not  
maintain  
temperature  
properly.  
Refer to Service and Parts manual to diagnose this problem  
and replace temperature probe.  
Refer to Service and Parts manual to diagnose this problem  
and replace hi limit switch.  
A. Faulty temperature probe  
B. Faulty hi limit switch  
A.  
B
A. Blockage in burner tubes.  
B. Flue is blocked  
A. Ensure that burner tubes are free of obstructions.  
B. Ensure that flue is free of obstructions.  
Thermal Limit  
Switch trips after  
short period of  
operation.  
Model MG2 or MG2T flue baffle  
is set too restrictively.  
Refer to flue baffle adjustment procedure in these  
instructions to set flue baffle to a less restrictive setting.  
C.  
C.  
Check ventilation hood for improper operation, down draft  
or blockage.  
D. Ventilation hood malfunction  
D.  
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Before and After: Visual Aid  
The below images show a typical model SG14 burner assembly before and after the installation of the SCBS  
upgrade. Wire harnesses and pilot tubing are omitted to provide better clarity. In order to give the installer a  
sense of part orientation and location, the gas piping parts (valve, tubing, runner arm and fittings) of the SCBS  
system are shaded. For clarity, the thermal limit switch assembly is not shaded.  
21  
L80-029 Rev 5 10/07  
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In the event of problems with or questions about  
your equipment, please contact the Pitco Frialator  
Authorized Service and Parts representative  
(ASAP) covering your area, or contact Pitco at the  
numbers listed to the left.  
In the event of problems with or questions about  
your order, please contact the Pitco Frialator  
factory at:  
(800) 258-3708 US and Canada only or  
(603) 225-6684 World Wide  
MAILING ADDRESS – P.O. BOX 501, CONCORD, NH 03302-0501  
SHIPPING ADDRESS – 10 FERRY ST., CONCORD, NH 03301  
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