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12
Disassembly
(Cont.)
13. Removing the impeller (15) will expose the two pieces of the mechanical seal (14). It will not be necessary to
further disassemble the pump if only a seal replacement is required.
14. The seal plate (13) is attached to the motor adapter (7) by two dowel pins (26). The seal plate (13) can be
freed from these dowel pins (26) by grasping the outside of the seal plate (13) and pulling way from the motor
wiggling it from side to side if required.
15. Remove the four screws (10) with washers (8) and (9) that secure the motor adapter (7) to the motor (1).
These components could cause severe personal injury or death if they were to strike a person.
Assembly – Refer to Replacement Parts Section for Figures
1. Ensure that the two 6½-inch long screws (11) with
washers (12) are properly inserted into the bottom
of the motor adapter (7) before attaching the motor
adapter (7) to the new motor (1).
2. Properly orient the motor adapter (7) to the motor (1)
and secure in place using the four screws (10) and
washers (8) and (9). Pentair recommends the use
of the EQ Seal Plate Alignment tool (P/N 351137s)
when mounting the motor adapter to ensure that the
motor adapter is perfectly aligned to the motor shaft,
(see Figures 9 & 10).
3. Insert the two dowel pins (26) into the motor adapter
(7).
4. Install the stationary ring of the mechanical seal (14)
into the seal plate bore. Ensure that it is fully inserted
into the bore with the white surface facing you.
The mechanical seal is a highly engineered
component that must be carefully handled. The
contact faces are manufactured to extremely precise tolerances.
These faces must be free of all surface dust and debris. Always wash
your hands before handling the mechanical seal. Avoid touching the
contact faces except for when pressing the seal ring into the bore.
Lubricate the rubber portion with a slight amount of soapy water if
required to insert it into the bore. Do not use silicone or other lubricants
as this can contaminate the seal face. Rinse the seal face if required
after assembly to free it of any dirt or debris.
5. Properly orient the seal plate (13), slip it onto the two
dowel pins (26) and secure to the motor adapter (7)
by tapping it toward the motor adapter (7) until there
is no clearance between the two parts.
6. Slip the spring portion of the mechanical seal (14) over the motor shaft, being certain that the hard black
contact surface is facing the white surface of the stationary seal ring. Use a small amount of soapy water if
required to lubricate the rubber of the mechanical seal (14) so that it slips easily over the shaft.
7. Install the shaft key into the shaft of the motor and then install the impeller (15) over the shaft. It will be
necessary to align the keyway in the impeller (15) with the key. Push the impeller (15) as far as possible onto
the motor shaft (1).
8. Install the socket head screw (16) with washers (4) and (5) to secure the impeller (15). It is important that the
screw (16) be tightened securely and that the impeller (15) is fully seated.
9. Apply a light film of silicone grease to the inside diameter of the brass bushing inside the diffuser (17). This
film will assist in properly centering the diffuser bushing to the impeller (15) and will reduce the friction should
the parts contact during motor start-up. DO NOT USE ANY OTHER TYPES OF LUBRICANTS.
EQ SERIES® High Performance Commercial Pump Installation and User' s Guide
Figure 9
Dowel Pin Holes
Alignment Notch
Seal Plate
Alignment Tool
(P/N 351137S)
Figure 10
Alignment Notch
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