Mini Air Cooled Chiller
13
4.
Test Run and Operation
1. Voltage Range
The power supply must comply with requirements. The fluctuation of voltage must be
kept in the stated range.
The voltage among each phase must be within
±
10% of the stated voltage. Improper
voltage may cause control problem and shorten the electric components and compressor’s
life span.
If the voltage between three phase are not well balanced, it will cause motor overheat.
The max voltage difference is 2% among each phase.
Voltage imbalance%=100*|Va-Vd|/Va
Average Voltage
：
Va=
（
V1+V2+V3
）
/3 Voltage of Each Wire
：
V1
，
V2
，
V3
Max Va Voltage among wires
：
Vd
2.
Water Flow Rate
Low flow rate will result in abnormal unit pressure and unit stoppage. It will also
produce low water leaving temp, which may freeze the heat exchanger. The high pressure
caused by large water flow rate will damage the water pump and the whole water system.
Recommended Water Flow Rate
：（
m
3
/h
）
Unit
Pipe Size
Min
Flow Rate
Standard
Flow Rate
Max
Flow Rate
FHCA40
1"
1.056
1.6
2.4
FHCA50
1"
1.188
1.8
2.7
FHCA60
1"
1.452
2.2
3.3
FVCA50
1 1/4"
1.155
1.75
2.625
FVCA60
1 1/4"
1.551
2.35
3.525
FVCA80
1 1/4"
2.178
3.3
4.95
FVCA100
1 1/4"
3.036
4.6
6.9
FVCA120
1 1/4"
3.564
5.4
8.1
FVCA150
1 1/4"
4.62
7
10.5
FVCA200
1 1/2"
5.76
8.7
13.05
Check following items before starting the unit
※
Check all the wire connections and make sure all the wires are properly connected.
※
Check if the phases are correct and if the voltage is in the normal range.
※
Fill in the water and open the air discharge valve to make sure the system is filled
with water.
※
Put power on and check if the flow switch is closed. Start the water pump and make
the water circulate to check if there is a leakage and if the water flow rate is in the
normal range.
※
Water flow switch
：
Operate the water pump and adjust the water flow rate to the half
of the max flow rate and put the water flow switch off.
