FRISTAM Pump FPE 3401

Pump Head Removal — Preparation

Turn off the motor and prevent it from being turned on accidentally.

Close the valve in the discharge line.

Close the valve in the suction line.

Loosen the nuts on the pump cover.

Block the impeller with a wooden wedge to prevent injury when stopping the impeller by hand.

Measurement of the Impeller-Pump Cover Clearance

Measure the height H of the pump cover using vernier calipers

Measure the clearance A between the pump casing and the impeller using vernier calipers

Calculate the clearance (clearance = A - H)

Adjust the clearance to the values specified in the Standard Clearance table

Measurement of the Impeller Casing Clearance — Sizes 711/712 to 1231/1232

Measure the clearance between the impeller and the casing using a leaf feeler gauge

Adjust the clearance to the values specified in the Standard Clearance table

Measurement of the Impeller-Casing Clearance — Size 1241/1242 or 1251/1252

Models FPE and FP…V: Mounting and Alignment of the Pump Shaft

Turn off the motor and prevent it from being turned on accidentally

Take the key out of the motor shaft pin

For electric motors with outputs higher than 30 kW: insert the supplied half-key

Degrease the motor shaft pin and the drill hole on the pump shaft using a cleaner, e.g., OKS 2610 Universal Cleaner

Grind the motor shaft pin and the edges of the key slot with grinding paper to eliminate unevenness and burrs

Apply a sealing gel, e.g., Stucarit 309, to the motor shaft pin in the region of the shaft shoulder

Slide the pump shaft with the shrink ring onto the motor shaft pin up to the shaft shoulder

Tighten the screws crosswise on the shrink ring. Enter tightening torque in Nm

Motor Replacement — Special Motor

Turn off the motor and prevent it from being able to be turned on accidentally.

Remove the pump head (see Pump Head Removal).

Replace the mechanical seal if necessary, and mount the pump head (see Pump Head Assembly).

Motor Replacement — IEC Standard Motor for FPE and FP...V

Turn off the motor and prevent it from being able to be turned on accidentally.

Remove the pump head (see Pump Head Removal).

Take the lantern off of the motor.

Remove the pump head (see Pump Head Removal)

Replace the mechanical seal, and mount the pump head (see Pump Head Assembly)

Perform the following tasks according to the given shaft seal