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Translation from original instructions
Packaged Rooftop
72
We reserve the right to make changes without any prior notice.
UATYA
4P645202-2
SYMPTOM
LIKELY CAUSE
POSSIBLE SOLUTION
Abnormal noises on the hydraulic
pipes.
Operation of the system pump
outside its performance curve with
excessive water flow rate.
If it is not possible to work on the
control of the pump, partially close
the shut-off device on the delivery
side of the unit until the nominal flow
rate is restored.
Presence of air in the system.
Check that the air valves are not
shut off by valves.
Vent the system.
Presence of oil on the discharge of
the safety valve.
Opening of the valve due to failure of
the protective devices to operate.
Check that the high pressure
switches are working and, if
necessary, replace them.
The valve must be replaced.
Opening of the valve due to
overtemperature.
Replace the valve and restore the
charge.