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Check points after installation
62
English
trial operation
Before the trial operation, check the following list to
protect the product.
PRECaUtIonS BEFoRE
tRIal oPERatIon
• When the outdoor temperature is low, turn on the
main power 6 hours before starting 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. If you touch the pipe during
or right after the operation, you may get burns
or frostbite.
• 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.
• Trial operation should be done after installation and
hydro controller option setting are finished.
• Purge air with water within the water system.
f
Is the power correctly connected?
- Power specification is 3 phase 4 wires
380 ~ 415 V depending on the model.
f
Is the grounding work properly done?
f
Is the pump interlock circuit connected?
- Only applied to non-pump models
f
Is the strainer (50 Mesh) properly installed at water
inlet?
f
Is water flowing in water system?
- Make sure water in the water system flows
properly before supplying the power.
- Make sure if concentration of brine is maintained
properly due to the usage temperature range
when operating cool storage.
- Be aware of supplying power and controlling
valves on water pipe system due to pump
operation during winter time for freeze
prevention when the outdoor temperature drops
below zero. Countermeasure to prevent water
pipe system and heat exchanger from freezing
due to low external temperature when not
operating is necessary.
ex) Using brine according to using temperature, pump
operation, heater
f
Is the pump full?
- Open the water supply valve and make water
system full. Vent air at the same time.
- Check if water is full by opening air vent valve
inside of the product or side of load heat
exchanger (such as fan coil unit) and close the air
vent valve.
- Refer to page 22 for place of air vent valve and
drain plug.
f
Is water pipe work (strainer, air vent valve, automatic
supply valve, place of expansion vessel, etc.) done
properly?
f
Operate the pump separately after supplying water.
Is there no air in water system? Is the flow rate of
water system enough for operation?
- When there is air or insufficient amount of water
flowing, it may cause plate type heat exchanger
to freeze.
- Check the flow rate is rated after checking
pressure loss of each product.
- If there is a problem and cannot solve it, stop the
trial operation and contact the service center.
DB68-05916A-09_IM_DVM Chiller Outdoor_EU_EN_.indd 62
2022-05-02 오전 9:00:11
