Checking Drainage; Checking V Belts; Cleaning The Indoor Unit Heat Exchanger; Greasing The Fan Bearings - Mitsubishi Electric PFD-P250-500VM-E Manual De Instrucciones

Caution:
When moving or reinstalling the unit, consult with your dealer. Defective
installation can result in electric shock, fire, etc.
Regarding noise
• In installing work, choose a place that can fully bear the weight of the unit,
and where noise and vibration can be reduced.
• Choose a place where cool or warm air and noise from the outdoor air outlet
of the unit does not inconvenience the neighbors.
• If any alien object is placed near the outdoor air outlet of the unit, decreased
performance and increased noise can result. Avoid placing any obstacles
adjacent to the air outlet.
• If the unit produces any abnormal sound, consult with your dealer.

10. Checking Drainage

Check that water is able to drain smoothly. If water is unable to drain smoothly, check for blockage of the grooves in the drain pan and the piping trap by paper particles
etc.
Carefully clean the grooves in the drain pan and the piping trap to prevent further blockage.
Ensure that the trap is always water-sealed.

11. Checking V Belts

1. Adjust parallel of the fan and motor pulleys in accordance with Fig.B-1.
2. Adjust the tension of each V belt so that the belt deflection force (W) at the optimum deflection is as shown in Fig.B-2.
3. It is recommended that the belt be adjusted to the optimum tension as shown in Fig.B-2 after it has been run-in on the pulley (24 - 28 hours operation). When a new
belt is fitted, adjust the belt deflection force (W) to approximately 1.3 times the maximum value.
4. It is recommended that the V belt be replaced every 8000 hours. It has reached the end of its life when it has stretched by approximately 2% (including an initial
stretch of approximately 1%) of the initial circumference.
[Fig. B-1] (P.5)
Parallel
K (minutes)
Pulley
Cast iron pulley 10 or less
[Fig. B-2] (P.5)
A Belt deflection force W(N)
Model Power souce frequency [Hz]
PFD-P250VM-E
PFD-P500VM-E

12. Cleaning the Indoor Unit Heat Exchanger

When dust adheres to the heat exchanger after the unit has been used for a long time, reducing the efficiency of heat exchange, and resulting in deterioration of cooling
performance.
Please ask your dealer how to clean it.

13. Greasing the Fan Bearings

Replenish bearing grease annually to ensure that the bearings may be used with
confidence a long time. Such replenishment extends the life of both the grease
and the bearings. Use the following grease.

14. When the Unit is to be out of Use for a Long Time

<When the Unit is to be out of Use for a Long Time>
(1) Run the unit in Fan mode for a period of 4 - 5 hours to dry the indoor unit.
(2) Turn the indoor unit power OFF.
<Preparations for Reuse>
u Check the following (1) - (4), then turn the power supply on.
(1) Clean and fit the filter.
(2) Check that the inlets and outlets on the indoor and outdoor units are not blocked.
(3) Check that the earth wire is connected. The earth wire may be connected with the indoor unit as well in some cases.
Caution:
Do not connect the earth wire to gas pipes, water pipes, lightning rods, or telephone earth wires. If earthing work is not conducted carefully it may result in
electric shock, smoke, flame, or mis-operation due to electrical noise. Please ask your dealer before beginning earthing work.
(4) Check to ensure that the drain hose is not bent, the tip is not raised or blocked, and that the trap has not been damaged, and fill the trap with water.
(5) Turn the power supply on before 12 hours or more.
Remarks
Equivalent to 3 mm displacement per meter.
Deflection force [W(N)]
50 15.0 to 16.5
60 14.5 to 15.5
50 20.0 to 22.5
60 19.5 to 21.0
Maintenance and inspection
• If the unit is used throughout several seasons, the insides can get dirty, re-
ducing the performance.
Depending upon the conditions of usage, foul odors can be generated and
drainage can deteriorate due to dust and dirt, etc.
Amount of deflection [mm]
5.0 to 5.5
5.0
4.5 to 5.0
Shell Albania Grease 2
Quantity 10.5 g
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