5 Maintenance
Maintain the pump with care. Read the instructions carefully and pay special attention to the warnings!
Always keep spare shaft seals and rubber seals in stock.
See separate motor instructions.
Check the pump for smooth operation after service.
5.2
Cleaning procedure
Step 1
Cleaning procedure for soiled air screw tapped hole:
1. Remove air screw (58) as per section 5.3 of the Service manual.
2. Submerge and soak the air screw for 5 minutes in COP tank with 2% caustic wash.
3. Scrub the blind tapped air screw hole vigorously by plunging a clean 1/2” diameter sanitary bristle pipe brush in and out of
the hole for two minutes while submerged.
4. Soak air screw in acid sanitiser for 5 minutes, then scrub blind tapped hole as described in step 3 above.
5. Rinse well with clean water and blow-dry blind tapped hole with clean air.
6. Swab test the inside of the tapped hole to determine cleanliness.
7. Should the swab test fail, repeat steps 2 to 6 above until the swab test is passed.
Should swab testing continue to fail, or time is on the essence, install a new (spare) air shaft.
Step 2
Cleaning procedure for soiled shaft tapped hole:
1. Remove shaft (7) as per section 5.3 of the Service manual.
2. Remove stud bolt (7a) from shaft.
3. Submerge and soak the shaft for 5 minutes in COP tank with 2% caustic wash.
4. Scrub the blind tapped shaft hole vigorously by plunging a clean 1/2” diameter sanitary bristle pipe brush in and out of
the hole for two minutes while submerged.
5. Soak shaft in acid sanitiser for 5 minutes, then scrub blind tapped hole as described in step 4 above.
6. Rinse well with clean water and blow-dry blind tapped hole with clean air.
7. Swab test the inside of the tapped hole to determine cleanliness.
8. After approved swab test, assemble stud bolt (7a) in shaft (7) with tightening torque 65Nm
9. Shoud the swab test fail, repeat steps 3 to 7 above until the swab test is passed.
Should swab testing continue to fail, or time is on the essence, install a new (spare) shaft.
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