mini exposed sequential thermostatic mixer shower
14
MAINTENANCE
The following maintenance procedure must
be carried out for commercial and health care
premises, but is not necessarily required for
domestic installations.
It is a requirement that all
TMV2
approved
mixer showers shall be verified against the
original set temperature results
once every
12 months
.
a) Initially check the filters for debris
once every
three months and clean if necessary.
b) Perform a thermal shut off test every
three months, and check the maximum
temperature setting. See the Commissioning
section for the details of this test and
readjustment of the maximum temperature
setting if required.
c) If the maximum water temperature varies
by more than 2°C from the commissioned
setting then carry out the following checks:
• Check the isolating valves are fully open.
• Check the internal surface for scaling.
If the body requires descaling then it should
be removed from the pipework to carry
out this work - all rubber parts
MUST
be
removed before descaling.
• Check the function of the non-return
valves.
The non-return valves (NRVs) prevent
cross-flow between hot and cold supplies
under unequal pressure conditions. They are
designed for long life with no maintenance.
NOTE:
The NRV’s will only operate in one
direction - water should be able to flow into
the unit from the inlets, but NOT back out
through the inlets.
If these checks do not highlight the reason
for the temperature variation, then internal
components will require replacement - please see
Customer Experience contact details.
Cleaning
It is recommended that all products are cleaned
using warm, soapy water.
Do not use abrasive or aggressive chemical
cleaning products as this may damage the
product surface finish and fittings and invalidate
your guarantee.
Cleaning the Filters
(fig.A)
It is advised that this should be carried out by a
qualified person.
• Turn off the water supplies before starting.
• To gain access to the filters remove the unit
from the inlet fittings.
• Remove hot and cold elbows.
• Remove the retaining clip and NRV.
• Wash the filter thoroughly under running
water, use a suitable brush to remove all
debris.
• Reassemble the shower.
Disinfection
Where chlorine is used for the disinfection
of water systems all relevant guidelines and
approved codes of practice must be strictly
followed. Failure to comply with the relevant
guidelines and approved codes of practice may
invalidate your guarantee.
Elbow
Filter
NRV
Retaining clip
Fig.A
