TM018 Raypak 131 Type A Pool & Spa Heaters REV: A
D.O.I: 8/04/2009
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5
Preventative Maintenance
It is suggested for peak performance that the pool/spa heater be serviced annually.
1. Clean the cabinet louvres of any dust, lint and debris.
2. Ensure plants or shrubs etc are not obstructing the cabinet louvres.
3. Check for signs of leaking at pipe fittings and headers.
4. Clean the burner bars.
5. Check for signs of sooting, the presence of soot accumulation indicates an abnormal
operating condition.
6. Check the main burner pressure and compare to that indicated on the rating label,
adjust if required. Remember to replace the pressure test point screw.
7. Check main burner flame to ensure all parts ignite readily and that the flame is blue
with little or no yellowing of the tips.
8. Check operation of the flame failure sensor. The burner should extinguish immediately
the flame sensor is disconnected.
9. Check for signs of excessive corrosion on the cabinet and inside the combustion
chamber.
10. With the burner operating disconnect one wire from the 45°C high limit (located on the
inlet header), the burner should extinguish. Reconnect the wire; the reset button lamp
should illuminate however the burner must not light. Press the reset button, the lamp
should extinguish and the burner should light.
11. With the burner operating disconnect one wire from the 55°C high limit (located on the
outlet header), the burner should extinguish. Reconnect the wire; the reset button lamp
should NOT illuminate and the burner should reignite.
12. Warn customer of the danger of storing pool chemicals and/or using flammable
materials or aerosol spray packs near the pool/spa heater. Aerosols and harsh
chemicals can cause premature failure of pool/spa heater components.
Water Treatment (Pool Balance)
Maintenance level
Fibreglass Pools
Fibreglass Spas Other Pool/Spa types
Water temp (ºC)
20
– 31
32
– 40
20
– 40
PH
7.3
– 7.4
7.3
– 7.4
7.6
– 7.8
Total Alkalinity (ppm)
120
– 150
120
– 150
150
– 200
Calcium Hardness (ppm)
200
– 300
150
– 200
80
– 100
Salt (ppm)
6000 MAXIMUM
Free Chlorine (ppm)*
2
– 3
2
– 3
2
– 3
* Free Chlorine must not exceed 5ppm, however occasional chemical shock dosing of the
pool or spa water should not damage the heater providing that the water is balanced to the
above conditions.
Automatic chemical dosing devices and salt chlorinators are usually more efficient in
heated water. Unless controlled, they can lead to excessive chlorine levels that can
damage the pool/spa heater.
