SECTION FOUR – Routine Maintenance and Professional Servicing
Preliminary Checklist
Complete the following checklist before servicing the
heater.
1. Remove debris from inside the heater and the area
around it.
2. Make sure the ventilation openings on the Jacket
Cover are unobstructed and that nothing is blocking
the Vent Cover. On indoor heaters, make sure air
intakes are open and free of obstructions.
3. Make sure the area around the Heater is free of
chemicals, combustible materials, flammable
vapors, and corrosive liquids.
4. Make sure all water connections are tight and that
water flow is unobstructed.
5. Make sure the pool or spa is properly filled with
water.
6. If the Heater has not been used for an extended
time, run the Pump for several minutes to clear air
from the system.
Routine Maintenance
The following maintenance should be performed every
6 months and at the start of each swimming season.:
1. Air Flow. Make sure the ventilation openings on the
Jacket Cover are unobstructed and that nothing is
blocking the Vent Cover. On indoor (or “outdoor
shelter”) heaters, make sure air intakes are open
and free of obstructions.
2. Combustibles, Flammables, and Corrosives. Make
sure the area around the Heater is free of chemicals,
combustible materials, flammable vapors, and cor-
rosive liquids.
3. Water Pressure Relief Valve. Test the Water Pressure
Relief Valve by lifting the valve lever.
4. Water Pressure Switch. Test the Water Pressure
Switch, which turns off the Heater if the water flow
is interrupted.
a. Lower the temperature setting on the Operating
Control Panel to turn off the Heater.
b. Wait 15 minutes after the Burner is off and then
turn off the Pump.
c. Raise the temperature on the Operating Control
Panel to turn on the Burner.
d. Wait 1 minute. The Burner should not come on. If
the Burner or Blower does come on at this point,
the Water Pressure Switch is malfunctioning.
Immediately press the “Off” button on the
Operating Control Panel to turn the Burner off.
See TROUBLESHOOTING, Page 7-1.
NNNNOOOOTTTTEEEE:::: The Water Pressure Switch may prevent the
Burner from coming on, if water flow to the Heater is
reduced due to a clogged filter.
NNNNOOOOTTTTEEEE:::: Operating the Heater without sufficient water
flow can cause severe damage to the Heater.
NNNNOOOOTTTTEEEE:::: If the Pump is off, make sure that the burner
has been off at least 15 minutes before restarting the
pump. Starting the pump too soon after shutting off the
burner can severely damage the Heater from water
hammer caused by cold water shocking the hot heating
coils.
5. Special Gas Vent Systems. On Heaters installed
indoors (or in “outdoor shelters”) with Special Gas
Vent systems, repeat the Final Installation Check.
Make sure pipes, joints, and fittings do not have
cracks, leaks, or breaks.
4-1
Routine Maintenance and Professional Servicing
SSSSaaaaffffeeeettttyyyy PPPPrrrreeeeccccaaaauuuuttttiiiioooonnnnssss::::