Gage Calibration

GAGE CALIBRATION

Before evacuation, check the low pressure gage for proper calibration and vacuum system for proper operation. With the gage disconnected from the refrigeration system, be sure that the pointer indicates to the center of "0." Tap the gage to be sure pointer is not sticking. If necessary, calibrate as follows:

- Remove the cover from the gage.

- Holding the gage pointer adjusting screw with one hand, carefully force the pointer in the proper direction to position the pointer at the "0" position. Tap the gage to be sure the pointer is not sticking. Replace the gage cover.