104
Inspection and test operation
Precautions before test operation
• When the outdoor temperature is low, turn on the main power 6 hours before beginning the operation.
- If you start the operation immediately after turning on the main power, it may cause serious damage to the
part within the product.
• Do not touch the refrigerant pipe during or right after the operation.
- Refrigerant pipe may be hot or cold during or right after the operation depending on the status of the
refrigerant which flows through the refrigerant pipe, compressor and other parts of the refrigerant cycle.
• Do not operate the product with its panel or protection nets off.
- There is risk of personal injury from the parts that rotates, heated or with the high voltage.
• Do not turn off the main power immediately after stopping the operation.
- Wait for at least 5 minutes before turning off the main power. If not, water leakage or other problems may
occur.
• Connect all the indoor units and the power supply for the outdoor unit and run auto address setting. Run auto
address setting even after changing the indoor unit PCB.
CAUTION
Checklist before auto trial operation
1. Check the power cable and communication cable of the indoor and outdoor unit.
2. Supply power to the outdoor unit 6 hours before trial operation to pre-heat the crank case heater.
3. Before supplying the power, use a voltmeter and phase tester to check the voltage and the phase.
- R, S, T, N terminal: check if the voltage is within 380 -415 V between wires (R-S, S-T, T-R) and 200-240 V between phases
(R-N, S-N, T-N).
4. When the power is supplied, outdoor unit will execute tracking to check the indoor unit connection and other optional
functions.
5. Write down the installation report on the service history report paper attached on the front part of the control box.
• Supply power to the outdoor unit 6 hours before auto trial operation to pre-heat the crank case heater.
CAUTION
6. Guaranteed range of auto trial operation
For precise judgment, you must perform auto trial operation in below indoor/outdoor temperature condition.
50
40
30
20
10
0
-10
-20
5
10
15
20
25
30
35
40
45
Indoor temperature (°C)
Cooling
Heating
Out
door t
empera
tur
e (°C
)
Summary of Contents for DVM S AM080FXVAGH
Page 112: ......
