Weight Platform Calibration

Weight Platform Calibration:

WEIGHT PLATFORM CALIBRATION
The weight platform should be checked for accuracy at least once a month. This calibration will assure that the compressor will shut off when the tank is full.

CAUTION Use of non-refillable tanks will affect platform calibration and will result in overfilling of non- refillable tanks. Overfilling could cause the safety valve to "pop-off" releasing a large quantity of refrigerant. If liquid refrigerant comes into contact with the skin or eyes, personal injury may result.

1. Place a known 45 lb. weight centered on the platform. The switch should just trip or be very close to tripping with this amount of weight.
2. If the switch is tripped, the mechanism is in calibration. If the switch does not trip, place a 2 lb. weight on top of the 45 lb. weight. This weight should definitely trip the switch. If the switch is tripped, the mechanism is in calibration. If the switch did not trip, the mechanism must be recalibrated.
3. To recalibrate, remove the 2 lb. weight and loosen the lock nut to the trip screw. Turn the trip screw until the switch just trips. Remove the 45 lb. weight.
4. To check, replace the 45 lb. weight on the platform and repeat step No. 2. Repeat step No. 3 as required. Tighten lock nut of the trip screw when recalibration is complete.