DAN DRYER BJORK 3000 Kullanıcı Kılavuzu - Sayfa 8

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TROUBLESHOOTING AND CORRECTIVE ACTIONS

SYMPTOM

The dryer does not run

The dryer cycles by itself and

runs constantly

The dryer is very loud and

does not run for a complete

cycle

The dryer runs, but the

airspeed is low

SYMPTOM

The dryer does not run

The IR-sensor detects only

close range objects

The dryer gets hot, but there is

no air stream

The dryer blows only cold air

during a full cycle

The air pressure is low

CORRECTIVE ACTION: FIRST-TIME INSTALLED HAND

DRYERS

Check breaker supplying the dryer is operational; check

power cord is correctly installed in the unit, and the con-

nection has been made correctly. Take suitable precaution

to avoid shock hazard.

Ensure there is no obstruction on or in front of the IR

sensor. Clean any dirt off the sensor. If problems persists,

replace sensor. Adjust sensor sensivity if needed.

Check supply voltage is correct. If PBC is damaged due to

incorrect voltage, replace unit as well as sensor and timer.

Check if carbon brushes are worn (≤ 10 mm graphite remai-

ning) and replace if needed.

Check supply voltage is correct. The dryer will run slowly if

the input voltage is too low. Check if potentiometer for air

speed is adjusted too low.

CORRECTIVE ACTION: USED HAND DRYERS

First ensure the breaker supplying the dryer is operational.

If it is, disconnect the power and remove the cover. Repla-

ce PCB and IR sensor. Taking suitable precaution to avoid

shock hazard, reconnect the power and check for voltage

on the terminal block.

Clean any dirt off the sensor lens. If problem persists,

disconnect the power and remove the cover. Taking

suitable precaution to avoid shock hazard, try carefully

adjusting the sensitivity range (see section regarding this).

Reconnect the power. If problem persists, replace IR sensor

and timer.

Disconnect the power. Remove the cover and disassemble

the blower/fan unit. Replace motor.

Disconnect the power. Remove the cover and open the mo-

tor housing. Verify "Power SW for heater" on PCB is "ON".

Check heating element for open circuit and signs of defects

caused by overheating. Replace defect heating element.

Check the output nozzle for obstructions. If none, discon-

nect the power and remove the cover. Remove any dirt from

the inlet. Disassemble the blower/fan unit, check if motor

brushes are worn (≤ 10 mm graphite remains). Replace

brushed and/or motor, if necessary.