Rev 8/2014
PrecisionTemp, Inc • 11 Sunnybrook Drive • Cincinnati, Ohio, 45237 • 1-800-934-9690 •
fax 513-641-0733 49
SB-8 Modulating Valve Replacement
Model:
PT-200FT, PT-200RC & PT-56
Software version:
All
Tools Required:
Pipe wrench
12” Adjustable wrench
Process:
1. Turn off power switch on booster and shut gas off at valve outside booster case.
2. Unplug the modulating valve 2-pin connector. It is the 2 pin black and white wire
connection just in front of the gas train assembly.
3. Place adjustable wrench on the union (located in front of the burner manifold) in
front of the modulating valve and loosen to remove. Unscrew modulating valve
from the gas solenoid using pipe wrench.
4. IMPORTANT! USE AGA-APPROVED SEALANT ON ALL GAS THREAD
CONNECTIONS BEING VERY CAREFUL NOT TO ALLOW ANY TO
PENETRATE THE MODULATING VALVE CAVITY. IF THIS IS NOT STRICTLY
FOLLOWED IT WILL CAUSE THE MODULATING VALVE TO BECOME STICKY
AND MALFUNCTION AND HEATER WILL NOT CORRECTLY OPERATE.
5. Re-assemble the heater reversing the procedure.
Ensure that the gas is
flowing in the direction of the arrow on the collar of the valve.
6. Reconnect wire connector and retighten union.
7. Turn on gas supply. Check for gas leaks.
8. Power up unit.
9. An Auto Calibration (see SB-7) procedure must be completed. Be sure to use the
Auto Calibration procedure specific to your type of unit (Recirculating or Flow
Through) and software version. Strictly follow the instructions. Failure of this
process will cause system malfunction.
10. After completing Auto Calibration procedure, lock the dish machine into rinse
mode and check for normal operation.
Kit Parts List:
Modulating Valve assembly
Reference Illustrations:
200-12
