Robinair 34788-I Recovery, Recycling, Recharging Unit - Manual (Page 15)

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539602 Rev. H June 11, 2013
Operating Instructions
Recharge the A/C System contd.
WARNING: To prevent personal injury,
• Verify the vehicle is in park or neutral
with the emergency brake ON before
starting the engine.
• Never run a vehicle without adequate
ventilation in the work area.
The machine charges a small amount of refrigerant
into the vehicle A/C system to offset any refrigerant
that may be left in the hoses, and then displays
DISCONNECT HS HOSE
DISCONNECT LS HOSE
START TO CONTINUE
Follow the prompts on the screen to remove the
service hoses from the vehicle and skip to Step 10.
6. Close the high-side coupler valve. The display reads
DISCONNECT HS HOSE
AND START A/C MAX
START TO CONTINUE
The high-side hose may be removed from the vehicle,
but the low-side hose must stay connected to the
vehicle with the low-side coupler open.
7. Place the vehicle gear selector in park or neutral,
with the emergency brake ON.
8. Start the vehicle. The A/C system should be set at
maximum.
9. Press START / YES. The display reads
EQUALIZING HOSES
PLEASE WAIT
The unit internally connects the low- and high-side
hoses, allowing the vehicle’s compressor to pull
refrigerant into the A/C system. When the charge is
complete, the display shows
DISCONNECT LOW SIDE HOSE
START TO CONTINUE
10. Close the low-side coupler valve. Remove the service
hoses from the A/C system. Shut OFF the vehicle.
CAUTION: If the low-side or high-side coupler
valves are left open, the system will pull the
refrigerant back out of the vehicle.
11. Press START / YES to begin clearing the hoses.
CLEARING HOSES
PLEASE WAIT
When the hoses are cleared, the display reads
CHARGE COMPLETE
CHARGED XX.XX LBS
ANY KEY EXITS
The A/C system is now ready for use.