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Installation and Maintenance

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– Leave the valve on the charge set closed.

– Connect the charge hose to the service port.

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– If there is no air in the refrigerant cycle (the pressure when the

air conditioner is not running is higher than 1kg/cm

G),

discharge the refrigerant until the gauge indicates 0.5 to

1kg/cm

G. if this is the case, it will not be necessary to apply

a evacuation.

– Discharge the refrigerant gradually; if it is discharged too

suddenly, the refrigeration oil will also be discharged.

Open

3-Way

valve

3-Way

valve

Gas side

CLOSEOPEN

Outdoor unit

Liquid side

Indoor unit

Friedrich MRM09Y1J Service Manual

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