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FAULT / SYMPTOM
1. The desired mixed
water temperature
cannot be obtained or
valve is difficult to set.
2. Mixed temperature is
unstable or changing
over time.
3. Either full hot or full
cold water flowing from
outlet fixture.
4. No flow from the valve
outlet.
5. Flow rate reduced or
fluctuating.
6. Mixed water temper-
ature does not change
when temperature
adjuster is altered.
7. Hot water flows into
the cold water system
or vice versa.
8. Valve is noisy.
210099 Rev. A
CAUSE
not within specific
limits.
are reversed.
pressures.
Valve is incorrectly set.
are reversed.
or check valves not
working.
Refer also to point 1.
supply failure.
pressures.
are reversed.
or check valves not
working.
velocity.
Valve sized incorrectly.
RECTIFICATION
within the specified limits for
the valve.
supplies fitted to the correct
connections.
valves on hot and cold
supplies.
Adjust mix temperature as
required.
Cold supplies fitted to the
correct connections.
debris - replace if necessary.
check mixed temperature.
valves.
supplies fitted to the correct
connections.
debris - replace if necessary.
achieved by fitting a pressure
regulating valve).
ensure the appropriate valve is
used for required flow.
12
I0516 Rev. D
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