Maintenance; Gas Pressure Tests - Jandy Lite 2 LG Installation And Operation Manual

Page 18
Pilot Flame Pattern
Thermal Pile
Thermocouple
Main Burner Flame Pattern
Figure 22. Pilot and main burner flame patterns.
6. Inspect the gas and millivolt controls annually
to assure safe and dependable operation.
Specifically, check the following:
a. High limit switch
b. Pressure switch
c. Automatic gas valve
d. Temperature control
Figure 23. Testing inlet pressure.
7. Inspect the external surfaces of the heat
exchanger tubes for soot buildup by placing a
mirror between and under the burners when
the heater is firing. Remove soot if it has
collected on the tubes, and correct the cause.
8. Inspect the internal surfaces of the heat
exchanger tubes annually. Remove any
buildup of scale.
Controls can deteriorate over a period of years.
A regular inspection schedule, with repair or replace-
ment as needed, will keep the heater performing
properly.
SECTION 4.

Maintenance

4A. Gas Pressure Tests
Use the following procedures to test the inlet gas
pressure (see Figure 23). A manometer kit is available
from Zodiac Pool Systems, Inc. Instructions for its
use are included in the kit.
1. Turn the heater OFF and close the gas
service cock.
2. Remove the inlet pressure test point sealing
screw and connect a pressure gauge from
the manometer kit.
3. Turn the gas service cock on, and light the
pilot and main burner.
4. See Table 1 for the gas inlet pressure. A
tolerance of +1.5 mbar is acceptable.
5. Turn the heater and gas service cock to
OFF.
6. Disconnect the manometer pressure gauge.
7. Refit the sealing screw and turn on the gas
service cock.
8. Test for gas soundness.
9. Relight the heater.
All of the other parts of the pool system have an
effect on heater operation. These parts include the
pump, filters, and strainers, valves, gas supply, and
time clocks. Before going on with these heater-related
maintenance procedures, make sure the: