Drummond MOV-120CN1-D Manuel d'installation - Page 13
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9. TRIAL RUN
Please conduct in accordance with "Trial Run Tenor Nameplate"
on the electric control box.
CAUTION
Perform the trial run only after the outdoor unit has been
powered on for over 12 hours.
Check that all valves are opened before trial run.
Check the electric safety before trial run.
Do not perform compulsory operation in any way.(It is very
dangerous if the protection device is not active)
Perform trial run only after all installations are finished.
Confirm the following issues before trial operation, and
box for the confirmed items.
Check whether the indoor unit and the outdoor are
installed properly.
Check whether the piping and wiring are correct.
Check whether the refrigerant pipeline system is
inspected for leakage.
Check whether the drain is smooth.
Check whether the heat insulation is perfect.
Check whether the ground cables are connected
correctly.
Check whether the pipe length and the refrigerant
amount are recorded.
Check whether the supply voltage is equal to the rated
voltage of the air conditioner.
Check whether any obstacles exist at the air
inlet/outlet of the indoor or outdoor unit.
Open the gas valve and the liquid valve.
Connect the power supply to preheat the air
conditioner.
Install the remote controller holder as required by the user.
The holder must be installed in a location suitable for transmit-
ting the signals of the remote controller to the indoor unit.
Trial run
Use the remote controller or wire controller (matched) to let the
air conditioner run in the cooling mode. Inspect the following
items against the operation manual. (If any fault occurs, remove
the fault by reference to the Section headed "Faults of Air
Conditioner and Causes" in the Operation Manual.)
Voltage
With the unit operating, check the line voltage of the unit. The voltage
should be within the range shown on the unit nameplate.
If low voltage is encountered, check the size and length of the supply
line from the main disconnect to the unit. The line may be undersized
for the length of the run.
Installation Manual
12
Outdoor unit
Check whether any vibration or abnormal sound occurs during
the operation.
Check whether the air, noise and condensate generated by the
unit affect the neighbors.
Check whether any refrigerant is leaked.
Indoor unit
Check whether the switch of the remote controller or wire
controller is normal.
Check whether the functional keys of the remote controller or
wire controller are normal.
Check whether the indoor temperature conditioning is normal.
Check whether the indicators illuminate normally.
the
Check whether the manual operation buttons are normal.
Check whether the drain function is normal.
Check whether the connective copper pipes and the drain pipes
generate condensate due to loose wrapping.
Open the air inlet grille to check whether any penetration or leak
of water occurs, especially at the drain stopper.
Check whether any vibration or abnormal sound occurs during
the operation.
Test whether the unit works normally in the heatig mode.
Inspection of Fan and Fan Motor
1) Check whether there is sundries in fan whorl, whether there
is collision and friction between whorl and impeller when
rotate impeller by hand and listen if there is abnormal noise
on fan bearing.
2) Check whether fan,fan motor and belt pulley is loose, check
whether tightness of belt is up to the demand and whether
belt pulley of fan and motor is on one plane according to
following drawing. Check whether fan and fan motor rotate
smoothly.
3) Check whether the two belt pulleys are on the same plane
as the following left figure, use the thumb vertically stand on
the middle of the belt, and check whether the tension of the
belt meet the requirements as the following right figure.
4) Electrify unit and start fan then check whether fan rotation
direction is correct, stop unit and adjust phase sequence if fan
rotation direction is adverse. Check motor running current by
amperemeter and compare with motor nameplate parameter,
change motor or belt pulley and adjust the fan valve opening if
the measured value exceed nameplate parameter too much.