22
Reassembly:
Clean all castings with mild cleaning solvent such as kerosene. All dirt and foreign matter
should be removed.
The pump seal assembly must be installed over the clamp end of the drive sleeve. The large
diameter end of spring goes against the impeller hub. The small diameter end of the spring
rests against the seal cage. The small diameter of the seal cage faces the impeller. The
large diameter of the seal cage holding carbon washer faces the adaptor frame holding seal.
Make sure the drive sleeve is CLEAN and free of nicks or burrs. Use fine steel wool to polish
sleeve. Lubricate the sleeve with soapy water.
NOTE: DO NOT USE OILS OR S.T.P. They allow the seal bellows to set up too quickly on the
sleeve, thus preventing free movement of the seal cage after assembly.
Lightly lubricate all internal surfaces of bellows, with soapy water.
Place the spring over the drive sleeve (large diameter end) against the impeller hub.
Place the seal cage over the sleeve with carbon washer facing away from the impeller.
Press cage assembly down far enough to compress spring and release. The seal cage will
return to free height.
Lubricate the seal seat cavity with soapy water.
Lubricate the seal seat gasket with soapy water.
Use a wood dowel of sufficient diameter to press the seal seat squarely into cavity on pump
frame. HAND PRESSURE ONLY
Note: Polished metal surface must face opposite the seal seat cavity on pump frame. Optional
ceramic seal assemblies require less pressure to seat squarely, too much pressure will crack
ceramic seal.
Place impeller and seal cage assembly in housing as shown in the above figure. Affix the
gasket on the frame over the drive sleeve onto housing.
Attach the pump frame to pump head with bolts and secure evenly. Install the shaft clamp
onto the shaft and attach entire assembly to motor. Tighten the shaft clamp with an Allen
wrench.
See the next page to adjust the pump impeller clearance.
Mounting the Motor to the Pump
Check the rotation of the motor to be sure it coincides with the required rotation of the
pump assembly.
Loosen the drive clamp assembly (Ref 5) but do not remove.
Slide the pump assembly onto the motor drive shaft, aligning the holes in the adaptor frame
(Ref 5) with tapped holes in the motor mounting face, until adaptor frame (Ref 1) contacts
the motor mounting face.
Install two cap screws (diagonally opposite) and tighten to secure the pump assembly to the
motor.
Center the drive clamp assembly (Ref 5) and tighten.
Proceed to the next page to check the impeller clearance.
Содержание Duratherm
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