AMT 4783, Спецификация, информация и руководство по ремонту запасных частей

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4788-252-00 2 4/2015
Specifications Information and Repair Parts Manual 4783, 4787, 4788, and 4789
x
For Repair Parts contact dealer where pump was purchased.
22. Remount suction inlet (Ref. No. 4) and rotate stub shaft to be
sure impeller is not rubbing on suction inlet before tightening
fasteners.
23. Apply small amount of grease or Vaseline to the outside of
the diffuser at the O-ring location and on the flange of the
suction inlet. Install the O-ring seals.
IMPORTANT: Always inspect O-ring and gaskets (Ref. Nos. 13 & 21).
When cut, cracked or worn, replace them. Wet O-rings with oil or
Vaseline when reassembling pump for ease of assembly and to
prevent pinching.
24. Remount pump casing (Ref. No. 17).
25.
A short “run-in” period may be necessary to provide
completely leak-free seal operation.
ROTOR ADJUSTMENT
When installing a replacement impeller (Ref. No. 1), motor (Ref. No.
10), or stub shaft (Ref. No. 2), it will be necessary to adjust rotor
setting to ensure proper running clearance between the impellers and
the diffusers. Proceed as follows:
NOTE: Proper running clearance on this pump will determine both the
hydraulic efficiency and life of mechanical seal. Follow this procedure
carefully to maximize both.
1.
Rotor is set by loosening collar (Ref. No. 8) and sliding stub
shaft (Ref. No. 2) onto or off of motor (Ref. No. 10) shaft.
This procedure must be done with pump partially assembled
(See MECHANICAL SEAL REPLACEMENT steps 1 through
16).
2. Stub shaft is to be set so face of shaft is between 0.114"
from adapter face (See Figure 1).
3. Tighten fasteners on stub shaft collar and recheck running
clearance before proceeding with reassembly of pump.
4. Continue with reassembling as in mechanical seal
replacement with steps 19 through 26.
5. Always be sure during assembly to rotate impellers and
check for parts rubbing before tightening fasteners.