Gree CM100N1480, Service Manual

Page: 97 / 266

GREE Multi Variable Air Conditioners Indoor Unit
91
No. Installation Problem Possible Consequence
10
Water drainage from the
condensate water pipe is
not smooth.
Residual water in IDUs can affect the normal operation of the system. The possible
water leakage can damage the IDU's decoration.
11
The ratio of slop for
condensate water pipe is
insufficient or the
condensate water pipe is
incorrectly connected.
Reverse slop or inconsistent connection of condensate water pipe can hinder the
smooth drainage and cause leakage of the IDU.
12
The air channel is
improperly fixed.
The air channel will deform; vibration and noise occur during unit operating.
13
The guide vane of air
channel is not reasonably
manufactured.
Uneven air quantity allocation reduces the overall performance of the air
conditioner.
14
The refrigerant pipe or
condensate water pipe does
not meet the insulation
requirement.
Water can easily condensate and drip to damage the indoor decoration, or even
trigger the protection mode of system due to overheating operation.
15
The installation space for
IDU is insufficient. Since there is a lack of space for maintenance and checking, indoor decoration
might need to be damaged during such operation.
16
The IDU or the location of
the air outlet or return air
inlet is not designed
reasonably.
The air outlet or return air inlet may be short-circuited, thus affecting the air
conditioning performance.
17
The ODU is improperly
installed.
The ODU is difficult to be maintained; unit exhaust is not smooth, which reduces the
heat exchanging performance or even prevent the system from normal operation; in
addition, the cold and hot air for heat exchange and the noise may annoy people in
surrounding areas.
18
Power cables are incorrectly
provided.
Unit components may be damaged and potential safety hazard may occur.
19
Control communication
cables are incorrectly
provided or improperly
connected.
The normal communication in the system fails or the control over IDUs and ODUs
turn in a mess.
20
Control communication
cables are not properly
protected.
The communication cables are short-circuited or disconnected, and the unit cannot
be started up due to communication failure.
Understand the special requirement (if any) for unit installation before implementation to ensure
installation quality. Relevant installers must have corresponding engineering construction qualifications.
Special type operators involved in the engineering implementation, such as welders, electricians,
and refrigeration mechanics must have relevant operating licenses and are accredited with vocational
qualification certification.
2 Installation Materials Selection
The materials, equipment and instruments used during air conditioning engineering construction
must have certifications and test reports. Products with fireproof requirements must be provided with
fireproof inspection certificates and must meet national and relevant compulsory standards.
If
environmentally-friendly materials are to be used as required by customers, all such materials must
meet national environmental protection requirement and be provided with relevant certificates.