Owner manual

Model 17800B/17801B Recovery/Recycling/Recharging Unit

ENGLISH

7. If the scale does not read the weight accurately, recalibrate the scale and

UL circuit using the following instructions. If the scale does not respond to

testing, verify the scale cable is plugged into the main circuit board.

8. Press SHIFT/RESET to exit this mode

CALIBRATING THE SCALE

NOTE: ThescaleassemblyandULcircuitMUSTbecalibratedwheninstalling

areplacementscaleassemblyorcircuitboard.Toensurecontinuedcharging

accuracy,periodicallyconrmthechecklistbelow.

1. Remove all weight from the scale platform.

2. Turn on the MAIN POWER switch.

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

selectedrefrigeranttype.

3. Press SHIFT/RESET and ENTER until “PROGRAM” displays.

4. When the “PROGRAM” message displays, press SHIFT/ RESET at the

same time. The “FUNC” message displays.

5. Press 9. The display is blank.

6. Press RECOVER and ENTER at the same time.

7. The DATE message ashes, then “0.00” displays. Enter the current month and

year. For example, if the unit is being calibrated on November 8th, 1998, enter

1,1,9,8 and then press ENTER.

8. The “CAL” message will ash, then the “ZERO” message displays.

9. Verify nothing is on or touching the scale platform, then press ENTER.

10. The “CAL” message will ash, then the “A1” message displays.

11. Place a certied weight (between 20 and 70 lbs.) in the center of the scale

platform. Enter the weight from the display. For example, to record 20 lbs.

on the scale, press “2,0,0,0” on the keypad, then press ENTER. The display

returns to the vacuum mode.

Maintenance Procedures