Troubleshooting
Under normal operating conditions the Caleffi 2521 series mixing valve will provide a very
high level of performance. However, in some circumstances, where our maintenance plan is
not followed, the following problems may arise.
Symptom
Fluctuating mixed water
temperature
Erratic flow of water from
the valve
No flow of water from the
valve
Cause
a) Erratic supply temperatures
at the inlets of the valve.
b) Starvation of the water
supplies at the inlets
of the valve.
c) Incorrect commissioning
of the valve.
a) Insufficient water supplies.
b) Fluctuations in supply
pressures/temperatures.
c) Adverse effect created
by other draw off points
on the system.
a) In-line filters blocked.
b) Insufficient supply pressures.
c) Debris obstructing valve
operation.
Corrective action
·
Restore inlet conditions
within the limits of the
valve.
·
Stabilize inlet supply
conditions.
·
Clean filters.
·
Restore inlet supplies.
·
Clean debris or scale
from valve.
Caleffi North America, Inc.
3883 West Milwaukee Road
Milwaukee, WI 53208
T: 414.238.2360 F: 414.238.2366
Leave this manual for the user.
6-6-18
