© Copyright 2014 Zoeller
®
Co. All rights reserved.
5
ROTARY SEAL ASSEMBLY REPLACEMENT
Make certain that the power supply is discon-
nected before attempting to service the unit!
CAUTION
The rotary seal assembly must be handled carefully to avoid
damaging the precision lapped faces of the sealing components.
See Parts List For Reference Numbers
1. Disengage pump body (Ref. No. 10) from motor and mounting ring
(Ref. No. 2) by removing bolts (Ref. No. 11).
2. Remove diffuser bolts (Ref. No. 8) and remove diffuser (Ref. No.
7).
3. Unthread impeller (Ref. No. 6). from motor shaft.
NOTE: To remove the impeller use a 9/16" open end wrench to hold the
motor shaft. The shaft flat area is located in the middle of the mounting
ring.
4. The rotary seal (Ref. No. 5) will come loose at this time. Use a screw-
driver (or similar instrument) to pry the ceramic seal and rubber gasket
from the recess of the mounting bracket.
CAUTION
Be careful not to damage the motor shaft or recess surface.
5. Clean the recess and motor shaft thoroughly.
6. Install the new rotary seal assembly:
a. Insert the ceramic seal and the rubber gasket into the recess.
NOTE: To help facilitate installation, apply a light coating of oil to the
outside diameter of the rubber gasket. Make certain that the ceramic
seal is kept clean and free of dirt and/or oil.
b. Slip the remaining parts of the rotary seal assembly onto the
motor shaft.
7. Replace the impeller and diffuser removed in Step B and C.
8. Reassemble the pump body to the motor and mounting bracket.
MOTOR REPLACEMENT
1. NEMA J motors can be replaced in the field with any standard
NEMA J jet pump motor by referring to the following instructions
and the attached parts list.
2. Follow steps A-D as outlined under rotary seal replacement to
remove the pump body, diffuser, impeller and rotary seal.
3. Remove bolts (Ref. No. 3) that connect the motor (Ref. No.1) to the
mounting ring (Ref. No. 2) and pull motor away.
4. Replace motor with standard NEMA J jet pump motor by position-
ing motor against the mounting frame and assembling with four
3/8" x 3/4" cap screws. The mounting base is connected at the
bottom of the mounting frame with two 3/8" x 1/2" cap screws.
5. Follow steps E,F,G & H of Rotary Seal Assembly to reassemble the
remainder of the pump.
NOTE: Because damage to the shaft seal is most likely to occur in
disassembly, a new seal is required.
MOTOR DATA Figure 8
HP
Phase
Volts
Code
Letter
Max.
Amps
Locked
Rotor Amps
3/4
3/4
1
1
115
230
K
K
14.00
7.00
52.0
26.0
1
1
1
1
115
230
L
L
18.00
9.00
70.0
39.0
1-1/2
1-1/2
1
1
115
230
J
J
21.00
10.50
98.0
49.0
2
2
1
1
115
230
H
H
25.00
12.50
116.0
58.0
OPERATION
1. When installation has been completed remove the priming plug
from the discharge tee (see Figures 3-6) and fill the pump body
and suction pipe completely with water. No additional water will be
needed for subsequent start-ups unless the pump body is drained.
WIRE SIZE CHART Figure 9
Distance From
Motor To Fuse
Box, Meter or
Electrical Outlet
Minimum Copper Wire Size Chart (Gauge)
Single Phase Motors
3/4 HP
1 HP
1-1/2 HP
2 HP
115
Volt
230
Volt
115
Volt
230
Volt
115
Volt
230
Volt
115
Volt
230
Volt
0-50 Ft.
12
14
10
14
10
12
10
12
50-100 Ft.
12
14
10
14
8
12
8
12
100-150 Ft.
10
14
10
12
6
12
6
12
150-200 Ft.
10
12
8
12
*
10
*
10
200-300 Ft.
8
12
6
10
*
10
*
10
Fuse Size (Amps)
20
15
30
15
30
20
30
20
(*) Not economical to run in 115V, use 230V
2. After the pump is turned on it will require 2-5 minutes before all
air is evacuated from the suction line and water begins to flow. If
there is no water after 10 minutes turn the pump off and check the
following.
a. Any air leaks on the suction line must be eliminated.
b. Suction pipe inlet should be a minimum of 5 feet below the water
level.
c. Total suction lift cannot be greater than 25 feet.
d. Any restrictions in the discharge line, such as a closed valve
must be eliminated.
NOTE: Unit must be full of liquid before operating. Never run dry,
or against a closed discharge. Dry running or running unit against a
closed discharge will cause damage to the shaft seal. Do not pump
dirty water or abrasive liquids, otherwise the same may occur as if
running dry.
MOTOR ROTATION
Pumps are designed to rotate in one direction only, (counterclockwise
when facing the pump suction tapping) and cannot be reversed.
MAINTENANCE
Lubrication
The pumps and motors require no lubrication. The ball bearings of
the motor have been greased at the factory. Under normal operating
conditions they should require no further greasing.
Freezing
Drain the entire system if there is danger of freezing. A drain plug is
provided at the bottom of the pump case for this purpose.