eNeRGy-IOM-2020.11-EN
•
67
•
Task
Operating mode
Monthly
+
Quarterly
+
Half
Yearly
Check three-way valve on
HWC (If applicable)
Increase room set-point 10°C above the actual room
temperature. Check operation of the piston. It must
move away from the valve head. Reset the control.
|
Check the position of the
crankcase heaters (around
the compressor) and the
proper functioning of it
Check the well fixation of the crankcase heaters, if it is
tight enough
And check the crankcase heaters overall working.
•
Check defrost cycle with 4-
way valve inversion.
Switch the unit to heat pump mode. Change the set
point to obtain the standard defrost mode and reduce
the cycle time to the min value. Check the operation of
the defrost cycle.
|
Check overall working of
the flow controller (only
for rooftops with water
condensation function)
Cut-off the compressors, stop the water circulation,
then start the unit, wait for the water flow failing signal
in the controller.
|
Check the water flow (
only for rooftops with
water condensation
function )
Measure the water flow and compare it to the initial
value set in the command selection
|
Check the blower plug
fans ( freewheel)
Check the rotation of the fan (free rotation, detection of
vibration or bearing noises)
Check for the Amps consumed on all three phases;
compare with the nominal value given in the electrical
wiring diagram.
•
Check the axial extractor
fan ( if the unit is
equipped with )
Check the rotation of the fan (free rotation, detection of
vibration or bearing noises)
Check for the Amps consumed on all three phases;
compare with the nominal value given in the electrical
wiring diagram.
|
Check the well working of
the energy recovering
wheels
Check the rotation of the wheel; Check the strap
tension;
Replace the components in case of malfunctioning
|
Check Airflow rate safety
switch (if equipped).
Shut down supply fan. The fault must be detected
within 5 seconds.
•
Check freeze protection
on HWC (if applicable)
Test antifreeze function (leakage rate, frost protection
thermostat)
|
MAINTENANCE PLAN
MAINTENANCE PLAN
Summary of Contents for E014AH055FM2M
Page 2: ......
Page 5: ...eNeRGy IOM 2020 11 EN 5...