FRISTAM Shear Pump FSPE 3521

The position of the impeller is determined by the position on the shaft

The clearance is the distance between the impeller and the pump casing

9.9.1 Measurement of the Impeller–Pump Casing Clearance

– Pump casing is connected firmly to the lantern

– The impeller has been mounted and the impeller nut tightened

1. Measure the clearance Z between the pump casing (47) and the impeller (46) using vernier calipers

Warning: Only use couplings approved by Fristam. The coupling must be appropriate for the characteristic curve of the pump. If you have any questions, please contact Fristam.

Motor turned off and secured from accidental activation

Pump and motor detached from the base frame or foundation and removed

Coupling turned off in accordance with the motor manufacturer's specifications

Old coupling parts disposed of in an environmentally friendly manner

New coupling parts placed on the drive shaft and on the gear shaft

Motor placed on the base frame or the foundation and fastening screws slightly tightened

Parallel and angular misalignment of the shafts checked

Motor turned off and secured from accidental turn on

For flange connection: Clearance checked

Mechanical seal replaced and pump head mounted

Warning: This procedure requires trained personnel with PPE!

Pump shaft forced out toward the motor side

Bearing nut and guard plate removed

Outer race of the cylindrical roller bearing removed

Note: All parts that are gray in the above figure remain on the shaft

Surfaces of all parts cleaned and checked for damage

Motor reached normal operating temperature

Motor turned off and secured from accidental turn on

Oil collection container placed under the oil drain plug

Caution! Danger of burning from hot oil. Wear suitable protective gloves

Oil drain plug loosened and removed

Oil completely drained and disposed of in accordance with local regulations

Oil drain plug and seal cleaned and remounted

Amount of oil used (refer to Table 4 'Oil volumes')