Robinair 34134Z Refrigerant Recovery, Recycle, Recharge Unit - Manual (Page 24)

© 2003 SPX Corporation
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WARNING
Operation
9. Start the vehicle’s engine, turn the A/C system on for maximum cooling, and
do the following:
a. Watch the high-side and low-side gauges on the unit’s control panel.
Refer to the A/C system manufacturer’s service manual to determine
the correct pressures.
b. Check the evaporator outlet temperature to be sure the A/C system is
operating correctly. Refer to the A/C system manufacturer’s service
manual to determine the correct temperature.
NOTE: If the pressures and temperature are not correct, the A/C system
may still require repair. Complete the remaining steps, and then investigate
and make any repairs as necessary.
10. Stop the vehicle’s engine.
11. Open both panel valves until gauges equalize.
12. Close the coupler valves, and disconnect the service hoses from the A/C
system.
13. Do the following to clear the service hoses:
a. Press the Mode key and scroll to RECOVER XX.XX. Press the
Start/Stop key.
b. When the low-side gauge pressure reaches 10 in. Hg (34 kPa) vacuum,
press the Start/Stop key. All refrigerant should be removed from the
hoses.
c. Close the panel valves.
Recharging the A/C System Refrigerant contd.
Before starting the vehicle’s engine, verify the vehicle is in PARK or
NEUTRAL, with the emergency brake ON.
To prevent personal injury or death, never run a vehicle without adequate
ventilation in the work area.