Service And Spares; Inspection And Service - Bosch ZSB18 - 2A Installation And Servicing Instructions

40 | Service and spares

6 Service and spares
6.1

Inspection and service

CAUTION: Turn off the gas supply and
isolate the mains supplies before starting
any work and observe all relevant safety
precautions.
NOTE: Components
B After replacement of any components
always check for gas tightness where
relevant and carry out functional checks
as described in commissioning. Damaged
O-rings or gaskets must be replaced.
NOTE: Service work must only be carried
out by an authorised person.
NOTE: Do not attempt a service if a CO/CO
analyser is not available.
• To ensure the continued efficient operation of the
boiler it must be checked at regular intervals.
• The frequency of servicing will depend upon the
particular installation conditions and usage however,
an annual service is recommended.
• The extent of the service required is determined by
the operating condition of the boiler.
The service interval record sheet at the rear of these
•
instructions must be completed after each service.
Inspection
1. Check that the terminal and the terminal guard, if
fitted, are clear and undamaged.
2. If the boiler is in a compartment or cupboard check
that the specified service space around the boiler is
clear.
3. Check all the joints and connections in the system and
remake any that show signs of leakage. Refill and re-
pressurise if applicable as described in
Commissioning.
4. Operate the boiler and take note of any irregularities.
Refer to fault finding for rectification procedures.
Component access
1. Removing outer case
– Remove bottom panel by pushing it fully back and
then pulling it forward and down to remove.
6 720 646 195a (2010/11)
– Undo and remove two screws (1) securing boiler
casing at the top of the boiler.
– Undo but do not remove the two screws (2).
– Pull case forward and remove.
1.
2
2.
Fig. 61 Remove outer case
2. Lowering boiler control to the service position:
– Remove screw (1) securing the control panel.
– Pull the panel (2) forward into the service position.
1.
Fig. 62 Control panel into service position
1.
2.
6720644743-18.1Wo
AU/NZ
2.