Raypak 131 Service Instructions Manual page 47

Base Assembly
1. Remove the Jacket Assembly. Refer to „Jacket Assembly Complete‟ procedure on
page 45.
2. Remove the 2 hex head screws retaining the Gas Valve Cover and remove.
3. Remove the 2 hex head screws retaining the Gas Valve Enclosure and remove.
4. Remove the hex head screws (2 on each support) retaining the front and rear
Refractory Supports to the Base Panel and lift the assembly clear of the Base Panel.
5. Reassemble in reverse order above.
6. Test for gas leaks using soapy water solution.
7. Check In/Out Header unions for water leaks.
45ºC Inlet High Limit
1. Remove the In/Out Header Access Cover. Refer to „In/Out Header Access Cover‟
procedure on page 44.
2. Disconnect the wiring from the 45ºC Inlet High Limit.
3. Unscrew the 45ºC Inlet High Limit from the Adaptor in an anticlockwise direction.
4. Reassemble in reverse order of above.
Water Temperature Probe
1. Isolate the pool water from the pool heater.
2. Remove the In/Out Header Access Cover. Refer to „In/Out Header Access Cover‟
procedure on page 44.
3. Remove the clip retaining the Water Temperature Probe and withdraw the Water
Temperature Probe from the Adaptor. NOTE: Ensure the o-ring is also removed from
the Adapter.
4. Remove the Display Panel. Follow steps 1–4 of the „Display Panel Removal‟ procedure
on page 43.
5. Unplug the Water Temperature Probe from the PCB socket marked „40/C Sensor‟
6. Withdraw the Water Temperature Probe and wiring from the pool heater.
7. Reassemble in reverse order of above and cable tie the water temperature probe cable
to wiring loom.
Adaptor - Water Temperature Probe & 45ºC Inlet High Limit
1. Remove the Water Temperature Probe. Follow steps 1-3 of the „Water Temperature
Probe‟ procedure above.
2. Remove the 45ºC Inlet High Limit. Follow steps 2 & 3 of the „45°C Inlet High Limit‟
procedure above.
3. Unscrew the Adaptor from the In/Out header in an anti-clockwise direction.
4. Fit the replacement Adapter using thread tape on the Adaptor thread.
5. Refit the Water Temperature Probe and secure using the spring clip.
6. Restore the pool water supply, start the pool pump and check for water leaks.
7. Complete reassembly in reverse order of above.
TM018 Raypak 131 Type A Pool & Spa Heaters REV: A
D.O.I: 8/04/2009
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