STA-RITE SR333LP - Manual (Page 8)

CARE AND MAINTENANCE
MAINTENANCE INSTRUCTIONS
Risk of fire or explosion from flammable
vapors. Do not store gasoline, cleaning fluids, varnishes,
paints, or other volatile flammable liquids near heater or in
the same room with heater.
The following maintenance is recommended every six
months and at the start of every swimming season:
1. Inspect the jacket and venting system to make sure that
there are no obstructions to the flow of ventilating air
or burner exhaust. Check that room air intakes are
open and clear of obstructions.
2. Keep the area in and around the heater clear and free
from combustible materials, gasoline and other flam-
mable vapors and corrosive liquids.
3. Test the operation of the pressure relief valve by lifting
the valve lever.
4. Test for proper operation of the pressure switch. (See
“SWITCH SETTINGS” for testing instructions).
5. On enclosed installations with high-temperature
Special Gas Vent systems, repeat the Final Installation
Check, Page 15. Check for evidence of joint leakage.
Make sure that joints have not slipped partially or
completely apart. Check pipe and fittings for cracks or
breaks.
The combustion air blower is permanently lubricated,
and does not require periodic lubrication. The burner does
not require maintenance or adjustment by the user. Call a
qualified service technician if you suspect that the burner
may require maintenance.
WINTERIZING (See Figure 7)
For outdoor heaters in freezing climates, shut the heater
down and drain it for winter as follows:
1. Turn off electrical supply to the heater and pump.
2. Close main gas control valve and manual gas valve
(located outside the heater).
3. Open drain cock located on the bottom of the mani-
fold adapter, and drain the heat exchanger and mani-
fold adapter completely. If heater is below pool water
level, be sure to close isolation valves to prevent drain-
ing the pool (isolation valves are not required and
should not be used on heaters installed above pool
water level). Assist the draining by blowing out the
heat exchanger through the pressure switch fitting with
low pressure compressed air (less than 5 PSI or
35 kPa).
Explosion hazard. Purging the system with
compressed air can cause components to explode, with
risk of severe injury or death to anyone nearby. Use only
a low pressure (below 5 PSI or 35 kPa), high volume blow-
er when air purging the heater, pump, filter, or piping.
4. Remove the Water Pressure Switch. Plug the port in the
manifold to prevent bugs and dirt from getting into the
manifold.
5. Drain the plastic inlet/outlet manifold through the out-
let pipe. If the pipe does not drain naturally to the
pool, install a drain cock in the outlet pipe to drain the
manifold.
6. Cover air inlet grate with a plastic bag to prevent bugs,
leaves, etc., from getting into the heater.
NOTICE: Water trapped in the heater can cause freeze
damage. Allowing the heater to freeze voids the warranty.
To return the heater to service after winterizing:
1.
Close drain cock and fittings.
2. Before starting the heater, circulate water through the
heater for several minutes until all air noises stop.
See also “BEFORE STARTUP” (Page 4) and
“CARE AND MAINTENANCE” (above).
8
PR ESS
TA B
VEN T
PIL OT
OFF OFF ON ON
Open
Manual/Gas Valve OFF
Power
Combination Gas Control Valve OFF
Close Isolation Valves
Turn Clockwise
and press down
to turn off gas.
Drain Cock(s) and Plugs
OPEN
2704 1196
PRESS
TAB
VENT
PILOT
OFF OFF
ON ON
Remove Water Pressure
Switch to help Manifold
Drain
Outlet
Inlet
Drain Inlet/Outlet
Manifold
FIGURE 7: Winterizing