10
Replacing the Sensor:
The sensor is a plug-in unit that can be
thrown away when expended. It needs
replaced when the H-10PM no longer
responds to the Calibration Reference
Bottle, even with the Heater Adjustment
turned fully clockwise (make sure the ref-
erence bottle contains some refrigerant).
1. Turn the leak detector OFF.
2. Unplug the power cord if the unit is
plugged in and open the sensor cover.
3. Allow the sensor to cool before
touching it.
4. Unplug and discard the sensor.
5. Insert a new sensor and close the
sensor cover.
6. Turn the Heater Adjustment to its full
counterclockwise position.
7. Apply power to the unit and adjust
the sensor’s heat setting (see “Heater
Adjustment” section).
Troubleshooting
Problem
Responds to reference
leak in LARGE leak switch
position
Cause
Heat Adjustment set too high
Solution
Readjust heater (see “Heater
Adjustment” section)
Caution:
Personal Injury Hazard
Sensor surface temperature may reach
390°F (200°C) during operation, and may
cause a burn if not allowed to cool.
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