EFU User Guide (Part 2) - Yijia/A-Plus
Thank you very much for choosing the Yegao RadiFan air filter unit. To ensure that you can use it correctly and fully utilize the performance of the RadiFan air filter unit, please read this manual carefully before use.
When the unit needs to be repaired or has a malfunction and requires replacement of parts, please provide the following information.
Model and manufacturing code of the unit;
Description of the fault (including the operation of the machine before and after the fault occurred).
I. Pre-operation Inspection Items
Before operation, please check the following matters:
a) Whether the power supply wiring for the EFU is connected and whether the power supply is compatible with the EFU power supply;
b) Whether the leakage protection device for the power supply is installed;
c) Whether the grounding protection measures for the EFU are installed;
d) Whether there are any foreign objects entering the inlet of the EFU;
e) Whether the EFU box is fully installed on the filter;
f) Whether the potentiometer of the EFU is set at position 0;
g) If it is a remote control, please check whether the remote communication line has been connected to the control box.
II. Precautions for EFU Operation
2.1 Starting the Operation
a) When the potentiometer is adjusted above the number 5, the EFU starts to operate;
b) Is the rotation direction of the fan of the EFU clockwise?
c) Please confirm if there are any abnormal phenomena after the EFU operates;
d) Has there been any leakage during the operation of the EFU?
2.2 When the following situations occur, and the machine cannot operate normally, please contact the corresponding salesperson:
a) There is a fallen wire or loose connection inside the EFU;
b) The EFU cannot operate and the leakage protection switch trips;
c) The fan of the EFU rotates in the reverse direction, that is, counterclockwise;
d) There is a strong and unpleasant noise during the operation of the EFU;
e) The motor does not rotate after adjusting the potentiometer of the EFU after being powered on.
