Edwards 30B5M, Instruction Manual, Page: 39 / 50

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Maintenance
B064-04-880 Issue F
5.7 Replace a heater
Use the following procedure to replace a heater.
1. Switch off the 30B5M pump, allow it to cool, then open it to atmosphere.
2. Isolate the pump from the electrical supply and disconnect the pump electrical supply cable from the electrical
supply.
3. Remove the lower boiler end-cover at the control-box end of the pump. Remove one of the boiler side-covers
( Figure 1 , item 16).
4. Remove the thermal insulation at each end of the boiler.
5. Remove the heater terminals and the faulty heater(s).
6. Fit the new heater(s).
7. Lightly coat the threads of the heater terminals with a high-temperature anti-seize compound, then refit the
heater terminals.
8. Refit the thermal insulation to each end of the boiler.
9. Refit the boiler side-cover and the lower boiler end-cover.
10. Reconnect the electrical supply cable to the electrical supply.
WARNING
Do not allow anti-seize compound to come into contact with electrical cables. If you do, the cables
may be damaged and there may be a risk of electric shock.