DanVex DEH-900i Handbuch - Seite 11

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However, when operating in dusty environments, which are not normal operating conditions,

it may be necessary to clean the heat exchanger. In such cases, it is necessary to clean the heat

exchanger in a jet of warm water without the use of solvents and aggressive detergents,

with preliminary disassembly of the dryer housing, protection of electrical components

and subsequent blowing of the heat exchanger with compressed air.

5.5 Fan motor

The motor is equipped with rolling bearings, service life corresponding to the service life of the

engine. During operation, dust and moisture can enter the bearing, wear out and reduce its service

life. It is recommended to lubricate or replace the bearing depending on the intensity of use, but

at least once every 2 years.

5.6 Compressor refrigeration system

The compressor system is a closed circuit system and does not requires special maintenance.

If necessary, all diagnostic and maintenance activities must be carried out by a specialist

or an authorized service center.

6 DIAGNOSTICS AND TROUBLESHOOTING

For high quality and long lasting during operation, the installation was subjected to control

and testing during the manufacturing process. However, in case of problems during operation,

please use the following recommendations:

State

Dehumidifier does

not turn on (display

does not light up)

Dehumidifier does

not start (display

highlighted)

No or little

condensation

(fan running)

If there is a problem with the dryer control system or the refrigeration circuit, the display will show

an error code instead of the temperature reading.

Possible reason

• no power supply

• fuse failure

• high humidity setting

• tank full or missing

• launch after an emergency

blackouts

• freezing of the heat exchanger

• humidity sensor is defective

• fan motorout of order

• low air humidity or temperature

• filter or heat exchanger clogged

• refrigerant leak

• compressor malfunction

Actions foreliminate

• check the connection and mains voltage

• check the fuse

• reduce humidity settings

• empty and install tank

• delay start compressor 3 minutes

• check message on the display

and wait for the defrost

• check for an error on the display

• check fan rotation

• check air parameters for correct

operation

• clean the filter or heat exchanger

• check for an error on the display

• check the start of the compressor

by the sound and the presence

of an error on the display