Gree CM100N1320, Service Manual

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GREE GMV5 INDOOR UNIT SERVICE MANUAL
130
4.4 Testing of Drain Piping
◆
After piping work is finished, check if drainage flows smoothly.
◆
Shown in the figure, Add approximately 1liter of water slowly into the drain pan and check
drainage flow during COOL running.
5 Electrical Installation
◆
The wiring must be in accordance with the local rules.
◆
Rated supply voltage and special circuit for air conditioner must be used.
◆
Do not pull the power cord forcefully.
◆
All the electric installations must be carried out by specialist technicians in accordance with the
local laws, rules and these instructions.
◆ The diameter of flexible wire should be wide enough. Replace the damaged power cord and
connecting wire with special flexible wire.
◆
The earthing shall be reliable and connected to the special earthing device on the construction.
The installation must be done by specialist technicians. The leak protection switch and air switch
with enough capacity must be installed. The air switch shall have both the magnetic tripping and
thermal tripping functions to ensure protection against the short circuit and overload.

Earthed Requirements
◆
The air conditioner belongs to I type electric appliances. The reliable earthed action is a must.
◆
The yellow and green wire inside the air conditioner is the earthed wire. Do not use it for other
purpose or even cut off it. Do not fix it with tapping screw. Otherwise, it may cause electric shock.
◆
The earthed resistance must meet the requirements of national standard GB17790.
◆ There should be reliable earthed terminal for the power supply. Never connect the earth lead to
the following articles:
①
water pipe;
②
gas pipe;
③
drain pipe;
④
unreliable place considered by professionals.