8
Operating Instructions and Parts Manual
Hand Dryer
Surface-mounted High-Speed hand dryer
If the dryer will not run
The dryer cycles by itself
or runs constantly
The dryer runs but air
stream is low pressure
and/or low velocity
Ensure that there is no obstruction on or in front of the IR sensor. Clean
any dirt or debris off the sensor lens. If problem persists, replace sensor.
If symptom continues after sensor replacement, then replace CBM.
First ensure that the breaker supplying the dryer is operational. If it is,
disconnect the power and remove the dryer cover. Taking suitable
precautions to avoid shock hazard, reconnect the power and check for
Voltage at the terminal block. Verify that connections are made correctly.
Adjust the VR-2 (on item 34) to make sure it is not set too low.
Ensure that the supply Voltage is correct. Dryer will run weakly if the
input Voltage is too low. Verify Voltage requirement on unit rating label
and correct supply as required.
The dryer makes a loud
noise and does not run
for a complete cycle
Ensure that the supply Voltage is correct. Dryer will make a loud humming
noise if the input Voltage is too high. Verify Voltage requirement on unit
rating label and correct supply as required. If CBM has been damaged,
replace CBM, IR sensor-LED module, VR-2/ SW-1 and CBM wire harnesses.
Symptom
Corrective Actions for Initial Installation Failures
Diagnostics and Remedies
www.asijdmacdonald.com.au
www.asijdmacdonald.com.au
1800 023 441
Symptom
If the dryer will not run
The IR sensor only "sees"
close range objects
The air stream is low
pressure and velocity
Corrective Actions for In-Service Failures
Ensure that there is no obstruction on or in front of the IR sensor. Clean
any dirt or debris off the sensor lens. Check VR for sensor range setting. If
problem persists, disconnect the power and remove the dryer cover and
replace CBM, IR sensor module.
First ensure that the breaker supplying the dryer is operational. If it is,
disconnect the power and remove the dryer cover. Replace the CBM
and IR sensor module or disconnect heater element from circuit;check
resistance
(Ω) of element with multimeter. If Ω is off-scale infinitely
large then replace element. If Ω is between 15 and 20 then check
motor brushes for wear and replace them if remaining graphite is
≤
25/64" [10mm]. If after reassembly and testing there is stil no motor
function then replace motor. Taking suitable precautions to avoid
shock hazard, reconnect the power and check for Voltage at the
terminal block.
Check the output nozzle for obstructions. If none are present, disconnect
the power. Remove the dryer cover. Remove any dust/lint buildup from
intake vent slots. Check VR for speed setting. Disassemble the blower-
motor/fan housing. Check the motor brushes for worn condition (
≤
25/64"
[10 mm] graphite remains) and replace them, if necessary.
ASI JD MacDonald Pty. Ltd.
