RLD-H10P Product/Technical Bulletin 3
O
peration
!
WARNING: Personal Injury Hazard.
D
o not use the RLD-H10P in
an explosive or combustive
atmosphere. The ambient
atmosphere is drawn through the
probe and over the sensor, which
operates at approximately
1000
°
F (540
°
C). The resulting
hot mixture of air and
combustible gas could explode.
1.
Slide power switch to “on” position.
(See Figure 8125604figure8.)
2.
Slide range switch to small (“SM”) position.
(See Figure 8.)
3.
Check red LED. If it glows, the battery needs to be
recharged. (See section
Charging the Batteries
.)
4.
Check for sufficient airflow by pointing the probe tip
toward the floor and observing the airflow ball in
the probe (Figure 7). If the airflow is sufficient, the
ball will rise and float a small distance above the
tip of the probe. If the ball does not rise, tap the
probe lightly to make sure it is not sticking. If the
ball still does not rise, check the filter in the probe
tip as described in the
Maintenance
section.
Figure 7: Verifying Airflow
5.
Allow two minutes for the sensor to warm up.
When the sensor is warm, the light and sound
indication should idle at around three or four beats
per second.
6.
Proceed to the
Calibration and Verificatio
n section.
C
alibration and Verification
The leak vial may be used as often as necessary to
assure proper operation of the RLD-H10P, and to
assist in determining the size of the leak. When using
the small leak range position, a leak of HFC causing
an audible signal equal to that produced by the
leak vial has a leak rate of approximately
one-half ounce/year. When using the medium leak
range position on a CFC or HCFC system, this leak
rate would also be approximately one-half ounce/year.
Proper response during the calibration test verifies
sensitivity and operation for all three test positions.
1.
Ensure that the range switch is in the small (“SM”)
position. (See Figure 8.)
2.
Remove the black, sticky-label disc from the cap of
the leak vial and discard. Allow a few minutes for
the leak rate to stabilize. Do not attempt to
unscrew the cap, as you may damage the bottle.
It is filled with enough refrigerant to last
approximately six months.
3.
Test operation by briefly moving the probe tip over
the opening of the leak vial as if you are trying to
locate this leak. It is not necessary to hold the
probe over the leak, as this does not simulate field
conditions.
The RLD-H10P should respond with an increase in
flash rate and sound, verifying operation and
indicating the location of the leak.
4.
If the RLD-H10P does not respond to the leak vial,
make sure there is liquid in the bottle. If the unit
still does not respond to the leak, increase the
sensor heat slightly by turning the sensor heat
control knob 1/16th of a turn clockwise.
(See Figure 8.)
5.
Allow a minute for the sensor to heat, then repeat
the calibration procedure.
Figure 8: RLD-H10P Faceplate
