Test Run - Gree GRS-CQ16Pd/NaB-K Owner's Manual

Air-to-water Heat Pump

20.2 Test run

Test run is testing whether the unit can run normally via preoperation. If the unit can not run
normally, find and solve the engineering or unit problem until the test run is satisfactory. All inspection
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 man.
No.
Notice: before test, ensure that all power must be cut off including 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 the 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 main power supply is correct. If not, correct the phase
3
sequence according to specification.
Recheck the phase sequence before start-up to avoid inversion of the compressor which may damage the
unit.
Apply universal electric meter to measure the insulation resistance between each
4
outdoor phase and earth as well as between phases.
Caution: defective earthing may cause electric shock.
No.
Cut off all of 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.
Check all the conditions needed to start up the unit: oil temperature, mode,
1
required load ect.
Start up the unit, and observe the operation of compressor, electric expanding
valve, fan motor and water pump ect.
2
Note: the unit will be damaged under abnormal running state.
Do not operate the unit in states of high pressure and high current.
affixed information:
Items for
acceptance
after debugging
Start up the pretest procedure
Estimation or suggestion on the general running situation: good, modify
Identify the potential problem( no writing 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:
d. noise problem:
e. problem of indoor and piping system:
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 according to the specification? Please sign. Yes( ) No( )
Ready to start
Start up the unit
Acceptance situation:
41