Somat SPC-75S, Operation & Service Manual

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MP PUMP
REMOVAL AND INSTALLATION OF MECHANICAL SEAL or MOTOR
MECHANICAL SEAL :
1. Turn off power and lock out machine
2. Remove (4) 5/16-18 hex nuts from Impeller housing
3. Remove housing from pump-pak assembly
4. The impeller will now be visible, take care to NOT place anything in impeller
vanes. This will cause damage to the vane and will not be covered under
warranty.
5. Loosen 2 bolts holding drive sleeve to motor shaft.
6. Remove impeller with drive sleeve as an assembly, mechanical seal should come
off with drive sleeve.
7. Replace mechanical seal. Install with raised carbon face towards motor. Take
care to install straight onto sleeve. Install ceramic disc into adapter seat bore with
polished side up. Take extreme caution to not damage polished side as this will
cause immediate leaks. Ensure seal is seated to bottom of adapter seat bore. If
needed use a wooden dowel and gently tap into place to ensure tight seat into
bore.
8. Replace impeller assembly back onto motor shaft. Use a light coating of anti-seize
on motor shaft to ensure smooth seating.
9. Push down onto impeller head using a gloved hand to reach a gap of .030
between the bottom of impeller to top of adapter.
10. Tighten sleeve clamp while maintaining .030 clearance
11. Check rotation of impeller to ensure proper seating and gap clearance
12. If rotation and clearance are ok, then replace housing to adapter
13. Install (4) 5/16-18 nuts and lock-washers onto studs and tighten to 15-ft.lbs.
14. Verify that impeller does NOT hit or scrape housing.