7.1 Introduction
The precision dehumidifier can run for a long time and only needs very little maintenance. The maintenance of
the dehumidifier is beneficial to the long-term and good operation of the unit. The frequency of maintenance
depends on the operating conditions of the dehumidifier and the quality of the installation environment. The
maintenance cycle of dehumidification equipment should be determined according to the environment and
installation location of the equipment. Therefore, the recommended maintenance period can be determined
according to the actual situation. Improper maintenance may reduce the dehumidification performance.
7.2 Filter
The motor is equipped with bearings. The service life of the bearing is the same as that of the motor, so no
additional maintenance is required.
7.3
Motor
The motor is inspected once a year to ensure that its condition is normal.
7.4 Technical Description
The table lists service schedule of the general components. If necessary, please
contact the manufacturer for more details.
The dehumidification equipment is equipped with an independent filter device to treat the return air. The
filter device is installed at the return air of the equipment, so that the air that is about to enter the
dehumidification equipment can be cleanly filtered. The interval between cleaning or replacing the filter device
should be determined according to the amount of dust and particles in the air at the installation site. It is
forbidden to operate dehumidification equipment without a filter device. Because in this case, dust and
impurities may reduce the dehumidification performance of the equipment, and at the same time may cause the
compressor to start frequently. It is recommended to inspect the filter unit at least once a month.
7
.
Maintenance
Name
Service Schedule
Filter
Compressor
Coil
Defrost valve
Seal
Humidity sensor
Clean or replace
Check whether it is working normally and
whether the vibration is normal
Check the wiring and make sure the wiring is not
loose, check for damage and overheating.
Remove the dust and debris
Check for overheating or blockage,
check whether the ciucuit is normal
Check for signs of damage and displacement.
If it is worn or damaged, it should be replaced.
Check whether it is working normally and
callibrate correctly
3~6
months
12
months
8.2 Troubleshooting procedures
8.1 Troubleshooting Introduction
The purpose of this chapter is to help the operator of the unit to analyze the cause of the failure and
master the method of troubleshooting. The control method of the precision dehumidification equipment can
be easily connected with automatic control according to the requirements of use. In order to facilitate failure
analysis, please refer to the circuit diagram and related materials provided with the random group.
There is a high voltage inside the dehumidification equipment. Before taking any troubleshooting
measures, make sure that the power supply of the dehumidification unit is cut off.
There is a high temperature area (compressor) inside the dehumidification equipment, and the unit
should be cooled down before maintenance work is carried out.
The purpose of this chapter is to help the operator of the unit to analyze the cause of the failure and
master the method of troubleshooting. The control method of the precision dehumidification equipment can
be easily connected to the automatic control according to the requirements of use. In order to facilitate
failure analysis, please refer to the circuit diagram and related materials provided with the random group.
The adjustment, maintenance and repair of the unit should be carried out by qualified technicians, and
the relevant personnel should be clearly aware of the high temperature and high pressure inside the
dehumidification unit.
Poor dehumidification
- Filter blocked
- Reduced air flow
- Air leak
Problem
Reason
Troubleshooting
- Clean or replace the filter
- Check the supply air outlet
and adjust the air rate
- Check the panel and seal
Circuit breaker tripped off
Unit does not work
No dehumidification
No dry air
- No power to controller
- Controller failure
- Phase short circuit
- Circuit breaker failure
- Unit unplugged or no
power to outlet.
- Check controller fuse
- Check external on/off signal
- Check main circuit breaker
and phase
- Check electrical parts
- Power the unit
- Check the pipe
- Open the air damper
- Replace the filter
- Set lower humidity
- Frost on the evaporator
- Air damper not fully opened
- Filter blocked
- Humidity set too high
- Filter blocked
- Fan failure
- Phase failure
- Supply air duct blocked
- Replace the filter
- Check the fan and motor
- Check main circuit breaker
and phase
- Check the air duct
- Fan failure
- Check the fan and motor
8
.
Troubleshooting
29
30
