Potterton SIRIUS FS Installation & Servicing Instructions Manual page 56

7.3.3 OCI345 - LPB Communications Bus
Screw
Connector
7.3.4 LMS14 Interface PCB
Earthing post
Fault delay adjustment
7.3.5 Control Relays
Sirius FS
- See Section 7.2 (items 3 & 5) for access to electrical components
- Carefully remove connectors
- Undo the nuts securing the LPB onto the metal panel
- Lift LPB from panel
- Replacement is the reverse
-
See Section 7.2 (items 3 & 5) for access to electrical components
- Carefully pull off all connectors on the PCB
- Undo the one nut providing earthing to the PCB.
- Release the 3 PCB supports by pinching the end of each pillar with a pair
of pliers and slowly withdraw the PCB from the supports
- Replacement is the reverse
- Set fault delay using the adjustable pot (0 - 10 minutes)
- See Section 7.2 (items 3 & 5) for access to electrical components
- Remove the relay by pushing the release bar upwards
- Fit new relay (note pin alignment) by gently pushing the relay into the
holder. When correctly fitted the release bar can be returned to its original
position
54
Screw
PCB Supports
GB/IE