Test Run - LG ACHH017VBAB Installation And Owner's Manual

TEST RUN

TEST RUN/ADDITIONAL FUNCTION
Test run
Checkpoint before test run
Start the chiller after checking the following.
- Before starting the chiller, check the supplementary devices such as cold water circulation
pump, AHU or other devices. Refer to the directions from the manufacturer. If all equipped
parts are installed on the device, check whether all parts are installed appropriately and accu-
rately and check whether the wiring is done correctly. Refer to the wiring diagram of the prod-
uct.
- Check the flow switch for appropriate operation of the product. Check whether the sensor is
operating properly.
- For cooling, fill up cold water circuit with clean water or other non-corrosive liquid and purge the
air so that there is no air remaining inside the cold water circuit. If the outdoor temperature is
expected to drop below 0°C, add anti-freeze additive to the cold water circuit to prevent the
water from freezing. Cold water circuit must be cleaned before connecting to the product.
- Check and inspect all water pipes. Check whether the direction of the water flowing is correct
and whether properly connected to the evaporator. Open all flow valves to the evaporator side.
- Turn on the cold water pump and measure the overall water pressure reduction of evaporator to
check whether the flow is accurate compared to the designed flow rate.
- Check all electric connections within the control panel and whether all parts are tightly assem-
bled with good contact conditions. Though the connecting part is checked from the factory but
it can be loosened during the transportation from the vibration.
- Check and inspect all fuses. All fuses within the power panel and control panel must be
installed at appropriate location.
Starting procedure
The chiller can be started as follows.
- Check whether the load is operating on the air processing device or other device on the side of
the water that supplies the water to the chiller. If the temperature of the cold water is too high,
the start of the load device on the water side can be delayed.
- If auto control does not work from the chiller, check whether the water circulation pump is oper-
ating.
- Voltage variance must be within 10 % and check that the phase voltage imbalance does not
exceed 5 % between phases. Check whether the power and capacity is appropriate for pro-
cessing the load.
- Check the order of the power phase.
- Check and inspect the voltage monitoring meter within the power panel. The meter should not
show any error code.
- Use the HMI device to check the cold water outlet temperature and cooling water output tem-
perature setting.
- Set the start menu of HMI device to start the system. Water circulation flow must be within the
permitted range to control the temperature appropriately.
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