Func, 26 english, Maintenance procedures – Robinair 17801B Recovery, Recycling, Recharging Unit User Manual

Page 28

ENGLISH

CONFIRMING THE SCALE CHECKLIST

Blank Display or No Warnings

Check the wire connections from the scale assembly to the circuit board for

configuration and continuity.

Verify the circuit board is receiving the correct voltage (refer to the decal on the back

of the unit), and the two amp or 1/2 amp fuse is not blown. Use correctly grounded,

active, electrical outlets only. Replace the circuit board or fuses as needed.

Total Amounts Not Accurate

Verify that nothing is touching, blocking, or interfering in any way with the scale

assembly, tank, or hoses. Confirm that the total weight on the scale assembly is not

exceeding 80 lb/37 kg. If it is, reduce the amount of refrigerant in the tank.

Full (Full Tank Setting)

The compressor will shut off at the weight previously set. To check the weight of

the tank, scale, and refrigerant being recovered, follow the appropriate sections

found under Using the Diagnostic Mode.

CORRECT WEIGHT VERIFICATION

1. Turn on the

MAIN POWER switch.

2. Press

SHIFT/RESET until “PROGRAM” displays.

NOTE: If the unit is just being turned on, the screen will default to display the

selected refrigerant type. Press

SHIFT/RESET until “PROGRAM” displays.

3. When the “PROGRAM” message displays, press and hold

SHIFT/RESET,

then press

ENTER. The “FUNC” message will display when the manual

diagnostic mode has been accessed correctly.

4. Remove all weight from the scale platform.

5. Press

6 to turn the scale into a direct-reading weight scale.

NOTE: Any weight on the scale when 6 is pressed will not be shown on the

display. The unit automatically zeros the weight on the scale when

6 is pressed. If

you remove the weight, the display will show the change in total weight, but will

not show a negative sign.

6. Place a known weight of between 30-60 lbs./13-28 kg on the scale. The

display will show the known weight “± .04lb./.02 kg.”

Maintenance Procedures

NOTE:

Check the scale

accuracy every

three months.

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