Friedrich MRM09Y1J Service Manual

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Installation and Maintenance
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Lo
Closed
OPEN
Closed
Gas cylinder
R410A
Outdoor unit
Indoor unit
Liquid side
Gas side
CLOSE
3-Way
valve
3-Way
valve
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– Leave the valve on the gas cylinder closed.
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– Open the valves on the gas cylinder and the charge set. Purge
the air by loosening the flare nut on the liquid side valve ap-
proximately 45
o
or 3 seconds then closing it for 1 minute;repeat
3 times.
– After purging the air, use a torque wrench to tighten the flare
nut on liquid side valve.
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– Check the flare connections for gas leakage.
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– Close the valve on the gas cylinder and discharge the refriger-
ant until the gauge indicates 3 to 5 kg/cm
2
g.
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– Be sure to use a hexagonal wrench to operate the valve
stems.
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– Use torque wrench to tighten the service port nut to a torque
of 1.8 kg.m.
– Be sure to check for gas leakage.
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Friedrich MRM09Y1J Specifications

General

Brand	Friedrich
Model	MRM09Y1J
Category	Air Conditioner
Language	English