13.0
Changing Components
35
The Pump, interface PCB, pressure gauge and pressure
relief valve can be accessed after hinging down the facia
panel.
1. Release the facia securing screws (
1
/
4
turn) and hinge
down the facia panel.
13.7
Pump
(Fig. 50)
1. If only the head needs replacing. A standard Grundfos
UPS 15-60 pump head is interchangeable (see section
13.13 for details).
2. This must be switched to setting N
o
3 (Fig. 51).
13.8
Pump (Complete)
(Fig. 52)
1. Drain the boiler (see Section 13.1 paragraph 2 & 3).
2. Unplug the wiring harness from the pump.
3. Remove the four screws retaining the pump backplate to
the hydraulic manifold.
4. Remove the pump.
5. Fit the new pump and reassemble in reverse order.
13.9
Pump (Head Only)
(Fig. 53)
1. Drain the boiler (see Section 13.1 paragraph 2 & 3).
2. Unplug the wiring harness from the pump.
3. Remove the four socket head screws securing the pump
head and separate it from the housing.
4. Remove the screws retaining the pump electrical covers
on the original and replacement heads.
5. From the replacement UPS 15-60 pump head remove
the strain relief cable gland and discard.
6. Remove the plug connector from the old pump head and
wire it into the UPS 15-60 pump head.
7. Replace the electrical cover to the new pump head and
assemble with the electrical box at
6 o’clock to the housing.
8. Check that the pump has been switched to setting N
o
3
(Fig. 51) and reconnect the wiring harness plug.
Pump Setting
Fig. 50
Fig. 52
Fig. 53
Fig. 51
Facia Panel
Facia Securing
Screws
Summary of Contents for System 100 HE Plus
Page 49: ...16 0 Notes 49 ...
