Robinair AC375C Refrigerant Recovery, Recycle, Recharge Unit - Manual (Page 23)

Recover/Recycle/Recharge Unit
21
WARNING
Wear safety goggles when working with refrigerant. All hoses may contain liquid
refrigerant under pressure. Disconnect hoses using extreme caution. Read and
follow all warnings at the beginning of this manual before operating the unit.
CAUTION:
R-134a systems
have special fit-
tings to avoid
cross
contamination
with R-12
systems. Do not
attempt to adapt
the unit for
another
refrigerant —
system failure
will result!
Operation
After evacuating the A/C system and replenishing the A/C system oil as
necessary, use the following steps to recharge the A/C system’s refrigerant.
NOTE: For maximum unit performance during recharging, verify the refriger-
ant level in the source tank is at least 1.4 kg (3 lbs.) more than the amount
required for recharging the vehicle being serviced.
1. Refer to the A/C system manufacturer’s service manual to determine the
required amount of refrigerant to recharge.
2. Verify the unit’s power cord is plugged into a correct voltage outlet and
that the service hoses are connected to the A/C system. IMPORTANT:
Connect the red service hose to the A/C system’s high side; connect
the blue service hose to the low side.
3. On the control panel, turn the unit ON. Press the Menu key ( ) until
CHARGE XX.XX displays (XX.XX refers to the charge weight). Use the
Arrow keys to program how much to charge. Refer to the vehicle
manufacturer’s specifications for the amount to charge.
4. Open the appropriate panel valve(s) according to the A/C system
manufacturer’s specifications.
5. Press the Start/Stop key ( ) to begin charging. The screen displays the
amount of refrigerant being charged.
6. Watch the display screen. When the required amount appears, the screen
will toggle between CHARGE COMPLETE and the amount that has been
charged.
and
In some cases, the unit may not be able to charge the full amount, and
will display SLOW CHARGE. Skip to the Slow Charge Procedure on the
next page.
Recharging the A/C System Refrigerant
CHARGE COMPLETE CHARGE XX.XX