User Manual

20
Operation and Maintenance
Check the connection line after the installation work is completed, and make sure to
perform trial operation.
Check before trial operation
1. Pipeline system check
Check whether the duct direction is correct, whether the equipment suspension is firm, and
whether the hanging bracket is coated with antirust paint; check whether sundries or
installation tools are left behind in and on the duct and equipment; check whether the air
outlet is installed firmly.
2. Circuit system check
Check whether the diameters of the power cables meet requirements by referring to the
electrical principle diagram in the installation and operation manual, whether the
connection method is correct, whether contact points are firm, whether the power voltage
is AC220V/50Hz, and whether the power voltage range is within 220V±10%.
3. Trial operation
Clean the installation site, and make sure that the room is free from dust after ventilation.
Operate the machine according to the steps below:
 When the power supply is connected, make sure that the machine starts operation
after ventilation.
 When the switch button is set to the "Low" position/or the temperature controller or
wired controller is set to the "Low" fan speed, the unit operates at the low speed;
when the switch button is set to the "High" position/or the temperature controller or
wired controller is set to the "High" fan speed, the unit operates at the high speed.
 When an exception occurs, switch to the "Off" position immediately, and confirm
the connection line again.
 Power-off: Turn the power switch to the "OFF" position or press . The unit will
stop working.