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32
Maintenance
WARNING: To prevent personal
injury while working with refrigerant,
read and follow the instructions
and warnings in this manual, and
wear protective equipment such as
goggles and gloves.
Leak Check
A leak test may be performed on the machine at any time.
During this test, components containing refrigerant are
pressurized and monitored for pressure decay, which could
indicate a leak.
1. Select LEAK CHECK from the SETUP MENU. The
machine displays
Connect service hoses to storage ports
and open coupler valves
2. Connect the service hose couplers to the storage ports
at the rear of the machine. Open the couplers by turning
the collars clockwise.
3. Select to start. The machine performs a self-recovery
and displays
Recover in progress
The machine performs a 30-second vacuum test and
displays
Vacuum leak check in progress
If the vacuum test fails, the machine will prompt to check
for leaks.
Once the machine passes the vacuum test, a controlled
pressure is applied to its internal components. The
machine displays
Pressure leak check in progress
Pressure is held for ve minutes and monitored for decay.
Minutes and seconds count down on the display.
• If an acceptable pressure decay is detected, the
machine recovers refrigerant and returns to the Setup
Menu, ready for normal operation.
• If an unacceptable pressure decay is detected, the
machine will prompt to check for leaks. Take the
machine to an authorized Robinair service center
for repair.
WARNING: To prevent personal
injury should the machine require
transport to a local Robinair service
center, follow local government
regulations regarding transportation
of equipment containing R-134a.
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