Gree CF01000730, Service Manual

Page: 72 / 129

GREE Duct type split Air conditioner Inverter Series
70
1.3 Preparation before debugging
Notice!
Please record those installations which are inconsistent with the specification in time, so as to provide
corresponding analysis basis while testing the refrigeration system.
Inspection record before debugging.
Inspection record before debugging
Type No. Inspection items Reference value
Pass or
not
Examiner
Inspect
drawing
1 Is the drawing complete?
2 Follow the construction drawing?
Inspect
installation
environment
3
Is there pollution source in the installation
environment of ODU? Is the installation
location of ODU correct?
Refer to the installation of
ODU.
4
Is the ODU base firm? Does vibration
attenuation and water discharge meet
the requiremene?
Refer to the installation of
ODU.
5
Is the installation of basic module of ODU
at the same level?
Refer to the installation of
ODU.
6 Is the ODU operated with static pressure?
Inspection of
refrigeration
system
7
Does the fall between IDU and ODU
meet unit design requirement?
Refer to the specification of
ODU.
8
For the vertical gas pipe, is the oil loop
installed every 10m?
For the vertical gas pipe,
one oil loop shall be
installed every 10m from the
top down.
9
Is the opening angle of the cut off valve of
ODU the widest?
Open it completely.
10
Is refrigerant pressure normal?
Connect the liquid pipe valve of ODU with
high pressure gauge and connect the gas
pipe valve of ODU with low pressure
gauge, then read the corresponding the
numerical value.
At this moment, the high
and low pressure of the
system is balanced, and the
difference between
saturation temperature
which is corresponding to
the equilibrium pressure
value and ambient
temperature (subject to
lower value of indoor and
outdoor temperature) shall
not exceed 5
° C, if
exceeding 5 ° C, please
check if the ODU is leaked.
11 Leakage in valve?
If yes, please leakage
detecting with soap or leak
detector immediately to
confirm the condition. After
confirming, please stop the
subsequent debugging right
now, then re-debug it after
the problem is solved.
12
Before starting debugging, is the preheat
time of ODU over 8h?
Before starting the unit for
debugging, please ensure
the ODU is energized for
over 8h.