Systemair KT 50-25-4 [7/17] Maintenance service and repair

132780 Original

GB IE

- That the motor protection is functional. The direction

of rotation should correspond to direction-of-rotation

arrow (3 phase).

- Smoothness of motor operation, (no abnormal

noises).

- Failure to connect the thermal motor protection will

result in all warranties being null and void.

- TFE 220 is adapted to continuous operation.

Sound levels exceeding 70 dB(A) may occur

depending on model and size (see online catalogue

www.systemair.com for detailed information)

Maintenance, Service and Repair

Prior to maintenance, service or repair, ensure that:

- Power supply is interrupted (all-pole circuit breaker).

- Fan impeller has come to a complete standstill

- Observe personnel safety regulations!

- Should the supply cable be damaged, it must be

replaced by the manufacturer, its service agent or

similarly qualified persons in order to avoid a hazard.

The fan should be cleaned when necessary, at least

1/year to avoid imbalance and unnecessary damage

to the bearings. A filter will prolong the time interval

between each cleaning of the fan. (It is sometimes

recommended to install a filter guard). The fan

bearings are maintenance free and should only be

replaced if damaged. Do not use a high-pressure

cleaner (steam jet) when cleaning the fan. Ensure

that the fan impeller's balance weights are not moved

or the fan impeller distorted. Listen for abnormal

operating noise.

Resetting of the thermal trips

Manual thermal trips (SP1) are reset by disconnecting

the mains for approx. 10-20 min.

Fans with external leads for thermal trips (TK) are

reset from the external motor protection. This

protection may not have automatic resetting.

Make sure the fan has not been blocked or that the

motor protection has tripped. Contact the supplier if

the motor does not start after controlling and/or

resetting the motor protection.