Robinair 342000 Refrigerant Service Solution - Manual (Page 21)

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342000 Refrigerant Service Solution
Operating Instructions
CHARGING THE VEHICLE
The 342000 has a built-in default charge amount of two pounds (.91 kgs.).
Other charge amounts can be programmed in pounds and hundredths, pounds
and ounces, or kilograms.
NOTE : To achieve optimum performance, it is
important to pull a good vacuum prior to charging (see page 17). The 342000
automatically prevents you from starting a full charge into an insufficiently
evacuated system. If this occurs, follow display prompts.
Use the following steps to charge an A/C system:
1. Service hoses should be connected to the system and the service couplers
should be open.
2. Press the CHARGE key, or the SCROLL MENU key, to reach the
screen with the CHARGE function key, then press CHARGE.
3. You now have several options:
• Press the NEXT key to accept the 2.00 lbs. default.
• Press the UNITS key to change programming units. If you press the
UNITS key again, the program toggles through pounds and hundredths,
pounds and ounces, and kilograms. Stop on the unit of measure you
want.
• Use the numeric keypad and directional arrows to change the
programmed amount of the charge.
• Change the default charge program. The unit will charge through the
High Side unless you program it for Low Side charging. To do this,
press the LOW SIDE key.
4. After you have selected the units, high or low side charging, and the
amount to charge, press the NEXT key to enter your selections.
5. You will now be prompted to press the START key to begin the charging
process or the BACK key to change variables.
IMPORTANT:
For greatest
accuracy, do
not disturb the
unit during
charging.
NOTE: Oil is injected through the High Side (Red) Service Hose and the High
Side Hose must be connected to the A/C system with the coupler valve open.
NOTE: In order to draw oil into the A/C system, the system must be under
vacuum (see page 17).
9. Press and hold the INJECT OIL key until the oil level reaches the O-ring.
NOTE: Refrigerant must be charged through the high side into the A/C system
after oil is injected to flush the oil from the hoses into the A/C system.
You are now ready to recharge the A/C system with refrigerant.