CHEMFLO 4 (en)
Page 5 of 16
MOTOR MOUNTING
Check rotation of the driver to be sure it coincides with the
required rotation of the pump. When viewed from the driver
end the rotation of the pump is CLOCKWISE.
A Pumpak shaft sleeve is machined to precisely fit the shaft
of your driver. No provision is made for drive key and none is
required.
Loosen the drive clamp fasteners but do not remove.
NOTE
:
If the driver shaft is keyed, remove the key before attempting
to install the Pumpak. Slide the Pumpak assembly onto the
driver shaft, aligning the capscrew holes in the adaptor with
the tapped holes in the driver mounting face until the adap-
tor contacts the mounting face.
Install fasteners and tighten to secure Pumpak assembly to
the driver. First center then tighten the drive clamp assembly
to lock the shaft sleeve onto the driver shaft.
After all fasteners are tight including the drive clamp assem-
bly, remove the Assembly shim from the suction connection.
The shim was in place to establish clearance between the
face of the impeller and pump housing. Rotate the driver
slowly by hand to make certain that there is no rubbing.
TO ADJUST IMPELLER CLEARANCE:
1. Loosen the impeller drive sleeve
2. Use a tool such as a screwdriver to push the impeller
back then reinsert the Assembly Shim.
3. Seal spring tension should push the impeller forward
and capture the shim when the screwdriver is removed.
4. Re-tighten the shaft clamp. Remove the shim then re-
check for rubbing.
Torque Specifications
Size
Stainless Steel (ft-lbs)
Steel GR5 (ft-lbs)
5/16-18
10-14
14-20
3/8-16
20-26
26-32
1/2-13
34-42
70-80
1/2-20
40-48
N/A
5/8-18
85-95
N/A
SHIM
(24 GAGE)
CHEMFLO
HOUSING
IMPELLER
Figure 2
RELEASED 03/Sep/2021 12:38:56 GMT