7.
Add the proper impeller clearances to the feeler gauge stack and back the housing away from the
frame with the adjusters (371A) until the feeler gauge fits.
Evenly tighten adjuster bolts (371A) (about one flat at a time) in making this adjustment.
8.
Evenly tighten the locking bolts (370C) and then the adjuster bolts (371A) while keeping the indica-
tor reading at the proper setting.
9.
Make sure the shaft turns freely.
10. Replace the coupling guard.
11. Check both the thrust (332A) and radial (333A) labyrinth seals to make sure they are seated proper-
ly in the housing.
12. Wear insulated gloves to handle the coupling hub. The coupling hub will get hot and can cause
physical injury.
5.6 Couple the pump and driver
WARNING:
Failure to disconnect and lock out driver power may result in serious physical injury or death.
Always disconnect and lock out power to the driver before performing any installation or main-
tenance tasks.
•
Electrical connections must be made by certified electricians in compliance with all inter-
national, national, state, and local rules.
•
Refer to driver/coupling/gear manufacturer's installation and operation manuals (IOM) for
specific instructions and recommendations.
Couplings must have proper certification to be used in an ATEX classified environment. Use the instruc-
tions from the coupling manufacturer in order to lubricate and install the coupling. Refer to driver/
coupling/gear manufacturers IOM for specific instructions and recommendations.
1
2
1.
Coupling guard
2.
Coupling
Figure 26: Coupling guard assembly
5.6 Couple the pump and driver
54
Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual