Raypak 131 Service Instructions Manual page 56

Transformer
1. Remove the Electrical Control Box Cover. Refer to „Electrical Control Box Cover‟
procedure on page 43.
2. Disconnect the Transformer primary active and neutral wires from the Terminal Block.
3. Disconnect the Transformer secondary neutral wire from the ground nest.
4. Disconnect the Transformer secondary active wire at the fuse holder by pressing the
two halves of the fuse holder together and twisting. Do not let internal fuse fall out.
5. Remove the 2 screws retaining the Transformer and remove the Transformer.
6. Reassemble in reverse order of above.
Wiring Loom
1. Remove the Electrical Control Box Cover. Refer to „Electrical Control Box Cover‟
procedure on page 43.
2. Remove the Display Panel. Refer to „Display Panel‟ procedure on page 43.
3. Remove the multi-pin wiring plug from the RAM ignition module.
4. Disconnect the wiring from the earth nest.
5. Disconnect the Transformer secondary winding active at the quick connect to the main
wiring loom.
6. Pull the Relays 1 & 2 out of the Relay Bases.
7. Remove the Relay Bases from the din rail. Follow step 4 of the „Relay Base‟ procedure
on page 55.
8. Disconnect the wiring at the flame rod spade terminal.
9. Disconnect the wiring at igniter electrode spade terminals.
10. Remove the In/Out Header Access Cover. Refer to „In/Out Header Access Cover‟
procedure on page 44.
11. Disconnect the wiring from the 45°C Inlet High Limit and the Pressure Switch.
12. Disconnect the wiring to the 55°C Outlet High Limit(s). Refer to 55°C Outlet High Limit‟
procedure on page 48.
13. Disconnect the wiring to the Gas Valve. Follow steps 1 & 5-7 of the „Gas Valve‟
procedure on page 52.
14. Cut all cable ties securing the Water Temperature Probe wiring to the main wiring
loom.
15. Withdraw all wiring disconnected in steps 11 - 13 to the front of the pool heater.
16. Carefully draw all the wiring back through the cable entry in the Electrical Control Box.
17. Reassemble in reverse order of above. Note: To install the Relay Base onto the din rail
locate the top edge underneath the Relay Base onto the din rail and push the Relay
Base down until the yellow locking clip clicks into position. Cable tie the Water
Temperature Probe wiring to the main wiring loom.
TM018 Raypak 131 Type A Pool & Spa Heaters REV: A
D.O.I: 8/04/2009
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