AMT 4786-95, Спецификация, информация и руководство по ремонту запасных частей, Страница: 2 / 8

Specifications Information and Repair Parts Manual
4782-95 & 4786-95
4780-253-00 2 8/2013
ROTOR ADJUSTMENT
When installing a replacement impeller (Ref. No. 7), motor (Ref. No. 1), or stub
shaft (Ref. No. 25), 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. 24) and sliding stub shaft
(Ref. No. 25) onto or off of motor (Ref. No. 1) shaft. This procedure
must be done with pump partially assembled (See MECHANICAL SEAL
REPLACEMENT steps 1 through 18).
2. Stub shaft is to be set so face of shaft is between 0.114” from adapter face
(See Figure 2).
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.
1 1/2-Inch Sprinkler/Booster Pumps