The Putting Condition Of The Belt; Before Starting The Trial Run; Before Turning The Unit On; After The Unit Is Turned On - Acson ART 55 A Technical Manual

9. The Putting Condition Of The Belt

1. Set the parallel angle of the fan and the motor pulley as shown in table 1 and figure 1.
2. Set the tension of one belt when the flexion load is within the range as shown in figure 2 and table 2
at the proper flexion. (A=0.016xC mm)
3. Adjust the suitable tension after the belt sit properly across the pulley (after working for 24-28 hours).
When a new belt is used, adjust the suitable tension about 1.3 times the maximum value of the
flexion load.
4. Readjust the belt every 2,000 hours after the first adjustment.
Exchange the belt when the belt's surroundings length has expanded by 2% including the first
expansion (about 1%) of the belt (after approximately 8,000 hours converted working time).

10. Before Starting The Trial Run

After having installed the unit, check that :
(1) The unit is fixed securely.
(2) The unit is installed properly.
(3) The drain pipe is provided with a drain trap.
(4) The electrical wiring has been connected correctly and the terminal screws have been properly
tightened.
(5) The duct work has been performed correctly.

Before turning the unit on:

(1) Measure the resistance between the terminals of the electrical parts and ground to ensure that
the value is at least 1.0M ohm.
If the measured value is below 1.0M ohm, do not operate the unit.
(2) The unit is using a phase protector.
If wiring phase of power supply is mistaken, the unit does not run.
Please reconfirm and modify wiring phase.

After the unit is turned on:

(1) Check that the fans are rotating in the proper direction.
(2) Check to see whether there are refrigerant leakage, and slack in power or transmission cable.
(3) Check the operation of high-pressure switch.
If the two lead wires of the outdoor unit fan motor are disconnected from the contactor and cooling is
performed, the high-pressure switch should function and stop the unit after 5 to 10 minutes.
Perform trial operation after completion of above items.
Table 1
Parallel angle
pulley
pulley
Table 2
Size of Pulley Motor
mm inch
60-80 2.5-3.0
81-90 3.5
91-105 4
106-above 4.5-above
41
K(i) note
10 or less Gap of 3mm every 1m
Flexion load
W(kgf)
1.1-1.4
1.3-1.7
1.6-2.0
1.9-2.9