Gree EVO Série Manuel D'utilisateur page 34

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18.2 Test run
Test run is testing whether the unit can run normally via preoperation. If the unit cannot run
normally, find and solve problems until the test run is satisfactory. All inspections must meet the
requirements before performing the test run. Test run should follow the content and steps of the table
below:
The following procedure should be executed by experience and qualified maintenance men.
No.
Notice: before test, ensure that all power must be cut off, including the far- end power switch, otherwise, it
may cause casualty.
1
Ensure that the compressor of the unit is preheated for 8h.
Caution: heat the lubricating oil at least 8h in advance to prevent refrigerant from mixing with the
lubricating oil, which may cause damage to the compressor when starting up the unit.
Check whether the oil temperature of the compressor is obviously higher than the outdoor ambient
2
temperature.
Caution: if the oil temperature of the compressor is obviously higher than the outdoor ambient
temperature, it means that the heating tape of compressor is damaged. In that case, the compressor will be
damaged easily. Therefore, repair the heating tape before using the unit.
Check whether the phase sequence of the main power supply is correct. If not, correct the phase
3
sequence firstly.
Recheck the phase sequence before start-up to avoid reverse rotation of the compressor which may
damage the unit.
Apply the universal electric meter to measure the insulation resistance between each outdoor
4
phase and earth as well as between phases.
Caution: defective earthing may cause electric shock.
No.
Cut off all temporary power supply, resume all the insurance and check the electricity for the last
time.
1
Check the power supply and voltage of the control circuit; _____V must be ±10% within the range
of rated operating power.
No.
1 Check all the conditions needed to start up the unit: oil temperature, mode, required load etc.
Start up the unit, and observe the operation of compressor, electric expanding valve, fan motor and
water pump etc.
2
Note: the unit will be damaged under abnormal running state. Do not operate the unit in states of
high pressure and high current.
Others:
Estimation or suggestion on the general running situation: good, modify
Identify the potential problem (nothing means the installation and debugging are in
accordance with the requirements.)
a. problem of power supply and electric control system:
b. problem of load calculation:
c. outdoor refrigerant system:
Items for
d. noise problem:
acceptance
e. problem of indoor and piping system:
after debugging
h. other problems:
During operation, it is needed to charge for the maintenance due to non-quality problems
such as incorrect installation and maintenance.
Is the user trained as required? Please sign. Yes( ) No( )
Start up the pretest procedure
Ready to start
Start up the unit
Acceptance
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Mini Chiller