Pressure Switch Adjustment; Replacing The Gas Valve - Jandy Lite 2 LG Installation And Operation Manual

LITE 2 MODEL LG POOL AND SPA HEATER
1. Pump is operating properly.
2. Filter and strainers are not clogged.
3. Valves in the piping system are not closed.
4. Time clocks are properly adjusted.
4B. Pressure Switch Adjustment
The pool filter must be clean before making this
adjustment (see Figure 24).
WARNING
Never adjust pressure switch to turn heater
on, ONLY off.
1. Turn the rocker switch on the control panel to
OFF.
2. Set the pool thermostat to MAX.
3. Start the filter pump.
4. Turn rocker switch to ON. Heater should start.
5. With your fingers, turn the adjustment
sprocket very slowly clockwise until the
heater goes off.
6. Slowly turn the pressure switch adjustment
sprocket counterclockwise one-quarter turn.
The heater should come back on.
SLOWLY TURN ADJUSTMENT
SPROCKET CLOCKWISE
UNTIL HEATER GOES OFF.
WARNING: Only adjust the pressure switch to
turn the heater off, not on.
Figure 24. Pressure switch adjustment.
7. Check the adjustment by turning the filter
pump off. The heater should shut off immedi-
ately. If it does not, restart the filter pump
and repeat steps 5 and 6. Check the adjust-
ment.
8. Return the pool thermostat to the desired
temperature.
9. When the pressure switch is properly
adjusted, the heater should come on about 10
seconds after the filter pump is started and
shut off right after the pump shuts off.
It may be necessary to repeat these steps to get
a proper setting. The switch must be set so that the
heater will not fire unless the pump is running. If a
proper setting cannot be reached, contact the factory
service department.
10. Reinstall the door.
4C. Replacing the Gas Valve
WARNING
Never attempt to repair the gas valve. Such
attempts will void the warranty, and could lead
to dangerous results.
If the gas valve is found to be defective, replace
it by following these instructions.
1. Remove the service door.
2. Follow the shutdown procedures on the
lighting and shutdown label to turn off the
gas valve.
3. Turn off the main gas supply at the manual
gas cock or the meter.
4. Unscrew the screws that fasten the gas inlet
flange to the gas valve (see Fig. 25).
5. Remove the two screws that fasten the anti-
rotation bracket on the left side of the gas
valve.
6. Remove the pilot gas pipe from the gas valve.
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