Gree GMV6 DC Inverter VRF Units Service Manual
257
Step 9: Replacing compressors
Pay attention to the following items when replacing the compressors:
1) Remove the sealing rubber block before replacing the compressor and weld the compressor
and the corresponding pipeline. Nitrogen is required during the welding process. Since the
compressor suction and exhaust ports are all copper-plated steel pipes, it is necessary to use solder
with at least 5% silver. The welding gap should be 0.1~0.3mm to prevent blocking or insufficient
welding. Do not overheat the nozzles during the welding process.
2) After the pipeline system is welded, use special foot pads and bolts to fix the compressor
to ensure the stability of the compressor during operation.
3) When the compressor is connected to the power cables, it must be connected according to
the connection condition of the unit at the factory and based on the electrical circuit diagram. The
wires of the compressor must be connected in the correct phase sequence. In particular, make sure
that the two full inverter compressors are wired correctly. If the power lines of compressor 1 and
compressor 2 are reversed, it may cause unit failure, which may cause damage to the compressors
in severe cases; (for example, GMV-680WM/GX model, compressor 1 and compressor 2 are of the
same type. If compressor 1 and the compressor 2 power lines are reversed, the temperature sensor
package is correctly installed, and the unit may malfunction when the unit is running;)
5. Weld the
suction pipe of
inverter
compressor 2
6. Weld the
vapor injection
tube of inverter
compressor 2
7. Weld the
exhaust pipe of
inverter
compressor 2
8. Fixing bolt of
compressor 1
1. Weld the suction
pipe of inverter
compressor 1
2. Weld the
vapor injection
tube of inverter
compressor 1
3. Weld the
exhaust pipe of
inverter
compressor 1
4. Fix the fixing
bolt of
compressor 1
Before replacing the compressors, make sure that the models of the compressors to be replaced are
same as the models of the new compressors. The new compressors must be installed at the same places
of the respective old compressors and wired correctly. We recommend you replace the compressors one
Summary of Contents for GMV6 Series
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