TM018 Raypak 131 Type A Pool & Spa Heaters REV: A
D.O.I: 8/04/2009
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48
Pressure Switch
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. Disconnect the wiring from the Pressure Switch.
4. Unscrew the Pressure Switch in an anticlockwise direction by gripping the metal
section of the Pressure Switch with a pair of multigrips.
5. Fit the replacement Pressure Switch using thread tape. Note: Do not apply excessive
thread tape or over tighten as a breakage could result.
6. Restore the pool water supply, start the pool pump and check for water leaks.
7. Check the Pressure Switch adjustment. Refer to
„Pressure Switch Adjustment‟
procedure on page 42.
8. Complete reassembly in reverse order of above.
55ºC Outlet High Limit
NOTE:
Some P0131 models are fitted with two 55°C Outlet High Limits, one on the In/Out
Header and one on the Heat Exchanger Outlet.
A number of changes have been made to the weather shielding covers fitted to the In/Out
Header; this procedure details the method for current assembly methods.
For P0131 models fitted with the rework kit it will be necessary to remove the Top Panel,
Flue Diverter Assembly, Draft Intake Diverter and then remove the In/Out Header weather
shield to access the 55°C Outlet High Limit(s).
During re-assemble the In/Out Header weather shield must be sealed to the Flue Collector
using high temperature silicone.
1.
Remove the Flue Diverter Assembly. Refer to „Flue Diverter Assembly‟ procedure on
page 45.
2.
Remove the Draft Intake Diverter. Follow step 2 of the „Draft Intake Diverter‟ procedure
on page 45.
3. Remove the hex screw retaining the 55ºC High Limit Cover.
4. Disconnect the wiring from the 55ºC Outlet High Limit.
5. Remove the 2 screws retaining the 55ºC Outlet High Limit and remove.
6. Reassemble in reverse order of above using a small amount of heat transfer paste on
the face of the 55ºC Outlet High Limit if required.
