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Maintenance Procedures
Maintenance must be carried out in accordance with these instructions, and must be
conducted by designated, qualified and competent personnel.
This mixing valve series is designed for minimal maintenance under conditions of
normal use.
External surfaces may be wiped clean with a soft cloth, and if necessary, a mild
washing-up type detergent or soap solution can be used.
Warning!
many household and industrial cleaning products contain mild abrasives
and chemical concentrates, and should not be used on polished, chromed or plastic
surfaces.
Should an internal malfunction occur then this will probably require cartridge renewal.
The Thermostatic and checkvalve cartridges contain no user-serviceable parts, and
must not be dismantled.
Components are precision-made, so care must be taken while servicing to avoid
damage.
When ordering spare parts, please state product type, i.e. Rada 215-t3 or 222-t3, and
identify part name and number (refer to
PARTS LIST)
. A Service pack is available,
containing all the seals and strainer screens that may be necessary for renewal
during maintenance or servicing (part no. 408 92/87).
Lubricant
Important!
All seals are pre-lubricated. If you need to lubricate the seals, use only
a small amount of silicon-only based lubricants on this product. Do not use oil-
based or other lubricant types as these may cause rapid deterioration of seals.
Maintenance Procedure - Thermostatic Cartridge
Removal
1.
Isolate the supplies to the mixing valve, and open an outlet fitting to release
pressure and to assist the draining of residual water.
2.
Remove the temperature knob assembly (442 01) or locking cap (408 51/52)
using 35 mm wrench key provided (see
Figure2
). Do not remove the temperature
hub.
3.
(Built-in models).
Carefully lever off the concealing plate (408 76) by inserting
a medium slotted screwdriver blade under each corner, see
Figure 1
.
