Operating instructions
GB
1.5 Pipe Connection
The dimension of pipes for processing air and reactivation air should be in line with ISO7807 recommended
values. Pipes should be connected with the connection part on the ange; meanwhile, the screw bolt is limited
to within 20mm. While connecting the input and out pipes, please follow the notes below:
• In order to reduce loss of static pressure, shorten the length of the pipe if possible.
• To ensure the performance of the machine, all rigid (galvanized) pipe ttings are required to have
air-tightness.
• The pipes should have a good capacity of thermal insulation, then the phenomenon of moisture condensation inside pipe wall will be avoided, and the pipeline won’t be corroded.
• To reduce noise and vibration transmitted along the pipes, good quality, soft and strong airtight adapting
pieces should be used in the joint parts.
• If needed, install air valves in the pipes of processing air and reactivation air.
• If the reactivation air is introduced from outdoor dehumidier, the terminal of reactivation air pipe
should be high enough o the ground to prevent inhaling dust and debris, meanwhile, it must be far
away from sources of pollution such as energy emissions, steam and gases. In order to prevent wet air
being inhaled into the machine, the distance should be at least one meter between wet air pipe terminal
and reactivation air pipe terminal. In addition, the pipe should be designed to prevent snow and rain
intrusion.
• It is very wet in the wet air pipe. You should therefore make sure that the wet air pipe is installed in a
downward slope so that no water runs back into the dehumidier.
Be careful! As it is very wet in the wet air pipe, condensation water is easily formed on the inner wall of the pipe. If
there is danger of freezing, thermal insulation measures must be taken while the temperature is low. Sucient support
is needed under the pipes.
1.6 Electrical connection
Be careful! All electrical connection works must obey local electrical equipment installation standards, and be done by
qualied professionals. The machine needs three-phase AC power supply. Voltage and frequency are recorded in the
nameplate.
• It is forbidden to connect the power supply beyond the specied voltage and frequency.
• Before the three-phase AC power is supplied, its real status should be checked to ensure that its voltage
and frequency uctuation does not go beyond ±10%.
• Unit must be grounded. Set the power isolation switch to ensure the machine is totally shut o during
checking work. The main switch should be directly connected with the main power devices.
1.7 Inspection works before starting the dehumidier
Warning! All electrical works must be done by professionals who know the potential hazards during work, such as high
pressure, high temperature. Before the initial start, some inspection works is needed, and the power must be o during
the inspecting. The works includes:
• Check and ensure that the switch is placed into the “o” (OFF) position.
• Check and ensure that the air inlet lter is intact and that the various parts of the equipment is clean.
• Check and ensure that all of the air hoses are undamaged, and that the air hose is smooth.
• Switch the unit on, and place it into “Manual (MAN)” position, an indication light is illuminated.
• Check the blower, ensure that the rotation direction is correct. The correct direction of rotation is
• indicated by the arrow on the fan casing. If the fan’s rotation is incorrect, the dehumidier is provided a
reversed phase sequence.
• Check and ensure that the desiccant wheel rotation direction is consistent with the direction of the
• arrow, and conrm that there is no skidding between the wheel and belt.
• Switch to “o” (OFF) position, the machine should stop running.
NOTE :
If the supply cord is damaged, it
must be replaced by the manufacturer,
its service agent or similarly qualied
persons in order to avoid hazard.
NOTE :
Always disconnect the cord
before cleaning or maintenace.
6.