Common malfunctions and Solution of Roots blowers

Malfunctions

Reason

Solution

Blower

Can not rotate

Can rotated by hand

The motor is damaged

Repair or replace the motor

Can rotated round by hand

The lobes are locked

Open to repair

The impurity in blower

Open to clean

Can rotate

Abnormal sound or vibration

Skid, v-belt is too tight or too loose

Adjust v-belt tension

Pulley offset

Reset pulley

Pulley and belt cover friction

Adjust belt cover

Bearing oil lack or aging

To replace the oil

Gear oil lack or aging

To replace the oil

The safe valve leakage

Adjust the safe valve

Foundation insufficient strength

To strengthen the foundation strength

Piping resonance

Eliminate by the silencer and support

Exhaust pressure rises abruptly

See ※annotated

Anchor bolt is too loose

Tighten

Rotor interference

Open to repair

The impurity in blower

Open to clean

Check valve bad

Replace

Overheating

Exhaust pressure rises abruptly

See ※annotated

Temperature of working environment  exceeds 40 ℃

Ventilated working environment

Inlet silencer obstruction

Cleaning/replace filter

Airflow insufficient

Pipeline leaks

Tighten the pipe connection

Inlet silencer obstruction

Cleaning/replace filter

The safe valve leakage

Adjust the safe valve

V-belt is too loose

Adjust v-belt tension

Exhaust pressure rises abruptly

See ※annotated

Exhaust pressure rises abruptly

Shut off the valve

Fully open the valve

The water level rises

Adjust water level

Inlet/outlet pipe jams

Cleaning debris

Valve bad or twist reversed direction

Replace or reverse direction twist

Airflow overpowered

Reduce round speed or exhaust

Oil leak

Lubrication oil overmuch

Refuel to the center of oil standard