HRX-MM-N007
Chapter 4 Service Procedure
4.5 Replacement Procedure HRS Series
Mounting
1. Mount the deflector rubber to the motor shaft.
2. Mount the O-ring and mechanical seals (2pcs) onto the cover and onto the motor shaft.
[Tips]
・Push the mechanical seal to the end.
・The mounting direction of the cover is specified. Pay attention to the direction.
・Align”check marks”(See How to Removal 2)
3. Mount the spring and impeller onto the motor shaft.
[Tips]
The direction of the spring is determined by the key of the impeller.
4. Mount the collar onto the motor shaft. (Set screw x 2)
[Tips]
Fix the set screws with the collar held down.
5. Remove the tape on the back of the motor. Insert the flat blade driver to rotate the motor
shaft and check if the impeller rotates smoothly. Re-tape after checking. (Refer to Fig.
4.5-11 Rotation verification of impeller)
[Tips]
The moter shaft does not rotate smoothly when the impeller comes into contact
with the body or cover. Remove the body, and adjust the impeller.
6. Mount the high pressure pump referring the 4.5.4 Replacement of high pressure pump.
Fig. 4.5-11 Rotation verification of impeller
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