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Worcester-Bosch GREENSPRING CWi47 Manual

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Service and spares
GREENSPRING CWi47 – 6 720 646 322 (2015/04)
The priority user may change the initial selection at any time.
Non-priority users cannot change the selection made by the
priority user.
The system resets priority function 5 minutes after last water
demand, returning to the initial state.
To select priority
Any user may select temperature selection priority in the
following manner:
▶ Press one of the selection buttons or for
5 seconds.
10 Service and spares
To ensure the appliance correct functioning we recommend an
annual inspection or if necessary maintenance.
▶ Use only genuine spare parts.
▶ Order accessories according to the list of spare parts
provided with the appliance.
▶ Substitute dismantled joints and o-rings with new ones.
▶ Only the following lubricants must be used:
– On hydraulic parts: Unisilikon L 641
(part number 8 709 918 413)
–Threaded joints: HFt 1 v 5
(part number 8 709 918 010)
10.1 Periodic maintenance tasks
Functional checks
▶ Ensure that all safety, regulatory and checking components
are in good working order.
Heat exchanger
▶ Inspect the heat exchanger.
▶ If it is dirty:
– Dismantle the combustion chamber and remove the
heat exchanger overheat thermostat ( Fig.
2, [8]).
– Clean the chamber with a pressurized water jet.
▶ If the dirt resists: soak soiled parts in hot water with
detergent and clean carefully.
▶ If necessary: de-scale the interior of the heat exchanger
and connection tubes.
▶ Reassemble the heat exchanger using new gaskets and o-
rings.
▶ Remount the heat exchanger overheat thermostat on its
support.
Burner
▶ Inspect the burner annually and clean if necessary.
▶ If it is very dirty (grease, soot): Dismantle the burner and
soak it in hot water with detergent and clean it carefully.
▶ Verify if the flame is stable and blue without signs of yellow
flames.
Priority cannot be selected when the
appliance is working.
Your appliance must only be serviced by a
qualified service engineer.
DANGER:
▶ ISOLATE THE MAINS GAS SUPPLY
BEFORE STARTING ANY WORK AND
OBSERVE ALL RELEVANT SAFETY
PRECAUTIONS.
NOTICE: COMPONENTS
▶ After replacement of any components
always check for gas tightness. Where
relevant carry out functional checks as
described in the commissioning section.
Damaged O-rings or gaskets must be
replaced.
NOTICE:
▶ Service work must be carried out by a
competent registered engineer.
NOTICE:
▶SERVICE MUST NOT BE ATTEMPTED IF
A CO/CO2 ANALYSER IS NOT
AVAILABLE.
WARNING: Burner damage!
The burner surface is very fragile.
▶ Do not touch the burner surface, take
extra caution during the maintenance
operations!
… 49 …


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