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4. MAINTENANCE
STEP 10)
VERIFY THAT SPINDLES SPIN FREELY
Verify while turning both spindles by hand that
they are spinning freely. Then hold a white paper
underneath the spindles and visually check that
there is an even gap between the spindle flights.
The spindles are not allowed to touch.
STEP 11)
CHECK GAPPING OF SPINDLES
In case the spindles touch each other, the shafts
need to be gapped (See Subsection 4.5.8 "Proper
Gapping of Pump" on page 68). In case that the
tolerances between the flights are not equal but
do not touch, gapping is not absolutely necessary.
STEP 12)
TIGHTEN HEX SCREWS
Snug tighten both Hex Head Cap Screws for
Mechanical Seals (Pos. 2533) on the Seal Housing
(Pos. 2188).
PROCESSTEC INC. 2022
Page 63
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