Gree VERSATI III Series, Руководство по обслуживанию

Страница: 111 / 135

Installation
Normal debugging work can‘t be performed unless all installation items are qualified. If there is any problem, it
must be solved firstly. The installer will be responsible for all costs for delay of debugging and re-debugging
incurred by any problem which is not solved immediately.
Submit schedule of amending reports to installer.
Is the written amending report which should be signed after communication provided to installer?
Yes ( ) No ( )
5.2 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. Start up the pretest procedure
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.
2
Check whether the oil temperature of the compressor is obviously higher than the outdoor ambient
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.
3
Check whether the phase sequence of the main power supply is correct. If not, correct the phase sequence
firstly.
Recheck the phase sequence before start-up to avoid reverse rotation of the compressor which may damage the
unit.
4
Apply the universal electric meter to measure the insulation resistance between each outdoor phase and earth
as well as between phases.
Caution: defective earthing may cause electric shock.
No. Ready to start
1
Cut off all temporary power supply, resume all the insurance and check the electricity for the last time.
Check the power supply and voltage of the control circuit; _____V must be ±10% within the range of rated
operating power.
No. Start up the unit
1
Check all the conditions needed to start up the unit: oil temperature, mode, required load etc.
2
Start up the unit, and observe the operation of compressor, electric expanding valve, fan motor and water
pump etc.
Note: the unit will be damaged under abnormal running state. Do not operate the unit in states of high pressure
and high current.