PB Heat Peerless Combi 160, Руководство пользователя

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13 - MAINTENANCE
13.7 - Circulator
pump motor
replacement
To replace the circulator pump follow
the steps below while, refering to
fi gure 69:
1. follow the steps in section 13.10 to
isolate and drain the water from the
boiler;
2. follow the steps in section 13.2
to gain access the internal
components;
3. remove screws “B”;
4. remove the circulator pump motor
“A”;
5. label the electrical wires of the
circulator pump motor, phase and
neutral must be respected;
6. disconnect the electrical wires from
the circulator pump motor
7. install the new circulator pump
motor and reassemble the boiler
8. open the heating system isolation
valves and heating system fi ll valve
9. follow the steps in section 11.1.3
to bleed the air from the heating
system.
NOTE: If display shows L05 reverse
polarity (phase and neutral) to the
pump
13.8 - Expansion
tank pressure
To check the expansion tank pressure
follow the steps below:
1. follow the steps in section 13.10 to
isolate and drain the water from the
boiler
2. follow the steps in section 13.2,
to gain access the internal
components;
3. check the pressure of the
expansion tank, item “4” of fi gure
1 (The air inlet probe is on the top
of the expansion tank). It must be
14 psi (
1 bar) . If the pressure is
lower recharge the expansion tank
while letting the water run out of the
heating system drain valve.
Figure 69 - Replacing the pump motor