Product Manual
4
© Copyright 2021 Zoeller
®
Co. All rights reserved.
1-1/4" NPT
18-5/8" [473 mm]
5" [127 mm]
6-1/2"
[165 mm]
4" [102 mm]
4" [102 mm]
7-5/8"
[194 mm]
4"
[102 mm]
General Information
GRINDER PUMP DESCRIPTION
1. Pumps are constructed of cast iron with powder coated epoxy
protection for long life when pumping sewage in submersible
applications. The cutter assembly is comprised of 440 C stainless
steel components hardened to a value of 55-60 on the Rockwell C
scale; a cutter and a precision ground at disk. Cutting action takes
place with the rotation of the cutter in the clockwise (looking down
on the unit) direction only, see Fig. 6 on page 11.
2. Pump motors are available in single and three phase design. Single
phase motors require a starting relay, starting capacitor and a run
capacitor. These items are located in the switch case on the pump.
3. These grinder pumps have a single seal design and do not have
sensor wires.
4. Automatic reset thermal overload protection is integral on single
phase motors. For three phase models, overload protection is to be
provided in the control panel.
FIELD ASSEMBLED INSTALLATION
1. Installation and piping instructions are included with the rail system
and basin instructions. If pump is being retrotted to an existing
rail system, accessory parts may be required. Consult the factory
and advise make and model of rail system being used.
2. Refer to the appropriate Indoor/Outdoor prepackaged instructions
on pages 6-9 for more information on system installation.
3. All electrical connections including pump to control box and power
supply to control panels must comply with the “National Electrical
Code” and applicable local codes. Conduit and panel enclosure
openings must have a gas and watertight seal. Installation of
electrical panels, conduit and connections should be made by a
qualied licensed electrician. A UL Listed potting kit, P/N 10-2350,
is available from Zoeller Company.
4. When installing a pump with a check valve, or a rail system with
a check valve, you must give the pump case time to ll to help
prevent air lock when lowering the unit into the liquid. The pump
case has an air vent located behind the discharge. This air vent is
across the pump housing mounting surface and must be cleaned
before each reinstall. An extra air vent hole (3/16") may be drilled
in discharge pipe below the check valve to help prevent air lock.
This drilled hole must be cleaned before each reinstall. After the
pump is installed, run the unit submerged to assure the pump case
is lled (Water should come out of 3/16" diameter hole).
SK1621
FIGURE 1.
154108
154108
TOTAL DYNAMIC HEAD/FLOW
PER MINUTE
SEWAGE AND DEWATERING
Shut-off Head:
90
100
80
70
53 ft. (16.2m)
27.4
30.5
24.4
21.3
-
-
-
-
MODEL
60
50
40
30
20
10
5
Feet
-
-
16.5
28
37
42
15.2
18.3
12.2
6.1
9.1
3.0
-
-
62
140
106
159
43
Gal.
1.5
Meters
820
Liters
163
-
-
12
81 ft. (24.7m)
-
-
-
-
45
22
32
39
42
43
43
121
83
148
159
43
Gal.
819
LitersGal.
818
Liters
-
-
-
-
16.7
27
36
107 ft. (32.6m)
7
63
26
102
136
43
46
46
46
46
46
174
163
174
174
174
174
46 174
15 40
35 41
25 33
434.6
7.6
10.7
163
163
163151
125
8322
163
155
43 163
46 174
46 174
46 174
20
30
40
50
60
10
15
20 25
30 35
40 45
50
555
20 40 60 80 10 0 120 140 160 180 200
0
METERS
FEET
PUMP PERFORMANCE CURVE
MODELS 818/819/820
0
TOTAL DYNAMIC HEAD
FLOW PER MINUTE
U.S. GALLONS
LITERS
70
10
80
90
100
110
4
8
12
16
20
24
28
32
820
819
818