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Maintenance Procedure- Flow Cartridge
(Refer to Figure 9)
Removal
1.
Isolate the supplies to the shower control, and open the flow control to release
pressure and to assist the draining of residual water.
2.
Release outlet fittings from outlet connector.
3.
Locate removal slot, and carefully prise off the flow control cap. Lever out and
remove locking pin, and lift off outlet connector and flow control knob. Carefully
pull or lever the body shroud free.
4.
Release and remove the 4 cartridge retaining screws, and carefully pull the flow
cartridge free of the body.
Warning:
some residual water may be released.
Cleaning/Renewal of Parts
5.
The shower control body surface must be clean before refitting cartridge. If scale
or deposition is present, clean
(without Thermostatic, flow and checkvalve
cartridges fitted)
using a mild proprietary inhibited scale solvent, e.g. domestic
kettle descalent. After descaling, rinse body thoroughly in clean water before
refitting cartridges.
Note!
The shower control body must be cleaned carefully and not damaged in
any way.
Do not use any abrasive material.
6.
Cartridges may only be cleaned by flushing through under a jet of clean water to
remove lodged particles.
Do not descale. Cartridges are not serviceable, and
must not be dismantled.
Cartridges cannot be tested individually, service condition should be assessed
as part of the performance check; refer to
Commissioning Checks
.
7.
When renewing the flow cartridge, retain the locking pin with the outlet connector
off the displaced unit and refit.
8.
Examine accessible seals for signs of deformation or damage, and renew as
necessary, taking care not to damage seal grooves.
Note! The outlet lip seal must be inserted into the outlet connector before
assembly onto flow cartridge.
9.
Lightly coat all seals with a
silicone-only based lubricant
to assist reassembling.