Energy Tech Laboratories ETL - Energy Technology Laboratories Blower RSIB 300-500 ユーザーズマニュアル

3002503 11.06

LACK

RED

GREEN

POWER SUPPLY

200-240/3/60

440-480/3/60

WEA

THERPROOF B

VARIABLE FREQUENCY

DRIVE (typical)

FAN

MOTOR

L1 L2 L3 U V W

SWAP THESE WIRES -

ON THE OUTPUT SIDE!

4.6 Checking and Changing Rotation of RSIB 350, 400, and 500

To check the rotation of the impeller, it is necessary to be able to

see the impeller or the rotation of the cooling vanes at the end of the

motor housing.

Standing in front of the fan with the motor pointing towards you, the

rotation must be clockwise. This is indicated by an arrow on the

motor end cover. There are holes in the end cover that allow you

to see the cooling vanes, but it is difficult to see the rotation unless the

fan is running very slowly.

For a more precise determination, you may also see down inside the

fan housing, as shown in Fig.13. The arrow shown

(not actually inside fan housing) shows the proper rotation.

It is possible for the fan to operate with improper rotation. However,

although some performance can be seen the fan will probably

only provide 25-30% of full capacity. Improper rotation wears on the

motor, and causes various electrical faults at the Variable Frequency

Drive.

Fan rotation can be changed by swapping the two phase wires as

shown on the wiring diagram in Fig.14.

Fig. 13

Fig. 14