2761-255-00
Self-Priming Centrifugal Pumps
High Volume Dewatering
Stainless Steel Models
Operating Instructions & Parts Manual
XXXXX, XXXXX and XXXXX
Please read and save this Repair Parts Manual. Read this manual and the General Operating Instructions carefully before attempting to
assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. The Safety
Instructions are contained in the General Operating Instructions. Failure to comply with the safety instructions accompanying this product
could result in personal injury and/or property damage! Retain instructions for future reference.
Specifications Information
2761-98 thru 282D-98 &
and Repair Parts Manual
2821-98 thru 282M-98
Refer to form 1808-634-00 for General Operating and Safety Instructions.
06/2001
GPM of Water at Total Head in Feet
Max.
Model
10’
20’
30’
40’
50’
60’
70’
80’
90’
Head*
2827, 282J, 282D, 282F
58
51
44
37
28
18
7
—
—
74 ft.
2825, 2826, 282C, 282K
78
72
64
56
46
35
20
—
—
78
2821, 2822, 282A, 282B
99
92
84
75
65
54
43
31
15
93
2828, 282L, 282E, 282M
117
112
102
92
82
70
56
42
24
95
2762, 2764, 276B, 276D
111
96
85
75
60
48
30
15
—
86
2761, 2763, 276A, 276C
127
115
103
90
76
60
40
20
—
93
2767, 2766
148
136
123
110
95
82
68
49
30
101
(*) Shut-off; To convert to psi, multiply by SG (specific gravity of liquid), then dived by 2.31.
Performance
Maintenance
Make certain
that unit is
disconnected from power source before
attempting to service or remove any
component!
NOTE:
The pump casing should be
removed and inspected periodically to
insure that any foreign material is not
clogging internal pump parts. This unit
is equipped with a dual volute pump
casing. One of the volutes runs 180°, all
the way from the side opposite the
discharge into the discharge through a
completely enclosed passageway. If
foreign material clogs this area, it can
be dislodged by using a wire or long
spring.
MECHANICAL SEAL REPLACEMENT
Refer to Figure 1
IMPORTANT:
Always replace both seal
seat (Ref. No. 8) and seal head (Ref. No.
9) to ensure proper mating of
components!
1. Unthread fasteners (Ref. No. 6) and
remove casing (Ref. No. 14) and
casing seal (Ref. No. 7) from adapter
(Ref. No. 5).
2. Unscrew impeller fastener (Ref. No.
13), and impeller (Ref. No. 11)
separately by turning each
counterclockwise.
NOTE
: Most motors use an open end
7/16” wrench across flats on rear of
motor shaft (remove bearing cap for
access) to prevent shaft from turning.
Other motor shafts have a screwdriver
slot instead of flats.
3. Unscrew fasteners (Ref. Nos. 4 & 18)
and remove adapter, foot (Ref. No.
19), and handle (Ref. No. 3) from
motor (Ref. No.1) mounting face.
Seal head will come loose at this
time.
4. Push seal seat from adapter recess
with a screwdriver.
5. Clean adapter recess before
inserting new seal seat.
6. Carefully wipe polished surface
of new seal seat with a clean cloth.
7. Wet rubber portion of seal seat with
a light coating of soapy water.
8. Press new seal seat squarely into
cavity in adapter. If seal seat does
not press squarely into cavity, it can
be adjusted in place by pushing on
it with a piece of pipe. Always use a
piece of cardboard between pipe
and seal seat to avoid scratching
seal seat. (This is a lapped surface
and must be handled very carefully.)
9. After seal seat is in place, insure
that it is clean and has not been
marred.
10. Using a clean cloth, wipe shaft and
make certain that it is perfectly
clean.
NOTE:
If removed, slide slinger washer
(Ref. No. 2) onto shaft until it is located
approximately 1/8” from face of motor
Description
These centrifugal pumps are self-priming (to 20 ft. lift) units designed for high
volume liquid transfer - irrigation, de-watering, lawn sprinkling, etc. They can also
accommodate semi-solids (up to 3/8” dia.), sediment laden liquids, and liquids
with entrained air or gases. Units are constructed of 316 stainless steel and include
Viton elstomers. They are direct coupled to NEMA 56J frame, 3450 RPM motors
which require field wiring, no controls are supplied. Each pump is equipped with
a flapper valve to shorten re-prime time. Handles liquids from 40º to 200º F (4º to
93º C). For use with non-flammable, non-abrasive liquids compatible with pump
component materials.
