Gree GUD35ZD/A-T - Page 30

DC Inverter U-match Series Floor Ceiling Type Unit
26
sealing with insulated cotton in the knock-off hole of outdoor unit to prevent small
animals from entering. See the following figure.
Notice:
Only for the GUD100W/NhA-T, GUD125W/NhA-T,
GUD140W/NhA-T, GUD100W/NhA-X, GUD125W/NhA-X, GUD140W/NhA-X,
GUD160W/NhA-X units.
3.2.4 Connection Pipe Vacuum Pumping and Leak Detection
3.2.4.1 Vacuum Pumping
NOTICE
Make sure the outlet of vacuum pump is away from fire source and is
well-ventilated.
(1) Remove the caps of the liquid valve, gas valve and also the service port.
(2) Connect the hose at the low pressure side of the manifold valve assembly to the
service port of the unit’s gas valve, and meanwhile the gas and liquid valves
should be kept closed in case of refrigerant leak.
(3) Connect the hose used for evacuation to the vacuum pump.
(4) Open the switch at the lower pressure side of the manifold valve assembly and
start the vacuum pump. Meanwhile, the switch at the high pressure side of the
manifold valve assembly should be kept closed, otherwise evacuation would
fail.
(5) The evacuation duration depends on the unit’s capacity generally.
Model
Time(min)
GUD35W/NhA-T
15
GUD50W/NhA-T
20
GUD71W/NhA-T, GUD85W/NhA-T,
GUD100W/NhA-T, GUD100W/NhA-X
30
GUD125W/NhA-T, GUD140W/NhA-T,
GUD125W/NhA-X,GUD140W/NhA-X,
GUD160W/NhA-X
45