Gree UM600PH/A-M, Service Manual

Page: 74 / 121

GREE Duct type Ducted Type Split Air-Conditioner Units
74
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
℃
, if exceeding
5
℃
, 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.