Grundfos SR User manual

Service instructions
SR, SF
60 Hz
1/3~
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96617764 0406 US 12
1. Type identification ...........................................................................................................................2
1.1 Nameplate............................................................................................................................................................2
1.2 Type key...............................................................................................................................................................2
2. Spare parts.......................................................................................................................................4
2.1 SR (A), (B), (C) and (F)........................................................................................................................................4
2.2 SR (D), (E) and (G) ..............................................................................................................................................6
2.3 SF (H) and (I).......................................................................................................................................................8
3. Torques and lubricants.................................................................................................................10
4. Dismantling and assembly............................................................................................................11
4.1 General information............................................................................................................................................11
4.2 SR (0.75 to 3.0 hp).............................................................................................................................................11
4.3 SR (5.0 to 25 hp) and SF...................................................................................................................................12

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1. Type identification
1.1 Nameplate
1.2 Type key
1.2.1 Codes used
Connection type
TM03 1865 0306
Fig. 1 Example of SR, SF nameplate
Pos. Description Pos. Description
1 Type designation 5 Rated rpm
2Model, material number
and production code 6 Rated motor hp
3 Rated flow 7 Max. operating pressure
4 Head in feet at rated flow 8 Max. fluid temperature
Example S R - A - 5 - 25 -F -2 -60 BBVE A
Single-stage
Connection type
Volute type
Rated (or nominal) flow [m3/h] (at 60 Hz)
Rated (or nominal) head [H] at rated (or nominal) flow
Material
Number of poles
2 = 2-pole
4 = 4-pole
Frequency
50 = 50 Hz
60 = 60 Hz
Mechanical shaft seal
Pump version
A = Basic pump version
X = Special version
T = Trimmed impeller
R NPT (National Pipe Thread)
F Flanged (ANSI flange)
2
36 47 5 8
1
Type
Model
Q
PHP
GPM H
PSI max
Feet n
Made in Brazil
RPM
F° max
SR-F-20-16-B-2-60-BBVE-A
A 96292383 05 32
88
2
52
175
3500
176

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Volute type
Material
Mechanical seal
The code for shaft seal always consists of four letters.
Type Suction Discharge
A1.5" 1"
B1.5" 1"
C2.5" 2"
D2.5" 2"
E2"1.5"
F2"1.5"
G2.5" 2"
H3"2.5"
I4"3"
F Cast iron fitted
B Cast iron construction with bronze impeller
L Cast iron construction with brass impeller
Example B B V V
Principal Grundfos type designation for shaft seal 1
Material, rotating seal face 2
Material, stationary seat 3
Material, secondary seal 4
Pos. Explanation Code Description
1 Seal type B Rubber bellows seal
2Seal face,
rotating part
B
Q
Carbon, synthetic resin-impregnated
Silicon carbide (SIC) (on request)
3Seal face,
stationary part
V
Q
Aluminium oxide
Silicon carbide (SIC) (on request)
4 Rubber parts EEPDM
VFKM

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2. Spare parts
2.1 SR (A), (B), (C) and (F)
2.1.1 Drawing
TM03 1708 2705

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2.1.2 Service kits
Bolt kit
Pos.
Volute casing size (A) (B) (C) (F)
Flow - head 22-20 15-11, 18-12, 20-16
Description / kit no. 96591471 96591474 96591471 96591470 96591471
26 Staybolts 4 4 4 4 4
28 Hexagon head screw 4 4 4 4 4
36 Nut 444 4 4
Impeller kit - SR (A)
Cast iron Bronze
Pos.
Flow - head 8-13 8-17 8-23 10-13 10-17 10-21
Impeller size 102 mm 113 mm 125 mm 102 mm 110 mm 125 mm
Description / kit no. 96617337 96590312 96590316 96617338 96590407 96590409
49 Impeller 1 1 1 1 1 1
Impeller kit - SR (B)
Cast iron Bronze Brass
Pos.
Flow - head 11-28 11-37 11-28 11-37 8-24 10-29
Impeller size 138 mm 151 mm 137 mm 150 mm 133 mm 148 mm
Description / kit no. 96590323 96590324 96590410 96590411 96590319 96590320
49 Impeller 1 1 1 1 1 1
Impeller kit - SR (C)
Cast iron Bronze
Pos.
Flow - head 23-9 27-12 30-16 23-9 27-12 30-16
Impeller size 92 mm 104 mm 114 mm 91 mm 100 mm 110 mm
Description / kit no. 96590327 96590329 96590332 96590412 96590421 96590422
49 Impeller 1 1 1 1 1 1
Impeller kit - SR (F)
Cast iron Bronze Cast iron Bronze
Pos.
Flow - head 15-11 18-12 20-16 15-11 18-12 20-16 22-20
Impeller size 103 mm 113 mm 125 mm 101 mm 110 mm 121 mm 125 mm
Description / kit no. 96590369 96590370 96590371 96590454 96590456 96590458 96590367 96590453
49Impeller 11111111
Shaft seal kit *) Pump housing Motor bracket Drain plug
Volute casing size/shaft seal type BBVE BBVV BQQV
(A) 96591485 96591493 96626110 95028800 95028801 95028802
(B) 96591492 96591499 96626117 95028803 95028804 95028802
(C) 96591485 96591493 96626110 95028809 95028801 95028811
(F) 96591485 96591493 96626110 95028821 95028801 95028811
*) Consists of items 67, 72a and 105

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2.2 SR (D), (E) and (G)
2.2.1 Drawing
TM03 1709 1406

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2.2.2 Service kits
Bolt kit
Pos.
Volute casing size (D) (E) (G)
Flow - head 40-21 50-27, 50-37, 50-49 23-29, 25-32 30-44, 30-52 30-47, 40-60, 40-75 40-90
Description / kit no. 96591474 96591472 96591474 96591472 96591475 96591476
26 Staybolts 1 1 1 1 1 1
28 Hexagon head screw 1 1 1 1 1 1
36 Nut 1 1 1 1 1 1
Impeller kit - SR (D)
Cast iron Bronze
Pos.
Flow - head 40-21 50-27 50-37 50-49 40-21 50-27 50-37 50-49
Impeller size 127 mm 143 mm 160 mm 179 mm 125 mm 143 mm 160 mm 179 mm
Description / kit no. 96590334 96590336 96590339 96590351 96590427 96590428 96590433 96590434
49 Impeller 11111111
Impeller kit - SR (E)
Cast iron Bronze
Pos.
Flow - head 23-29 25-32 30-44 30-52 23-29 25-32 30-44 30-52
Impeller size 138 mm 147 mm 160 mm 175 mm 138 mm 147 mm 163 mm 179 mm
Description / kit no. 96590353 96590354 96590355 96590356 96590436 96590437 96590438 96590439
49 Impeller 11111111
Impeller kit - SR (G)
Cast iron Bronze
Pos.
Flow - head 30-47 40-60 40-75 40-90 30-47 40-60 40-75 40-90
Impeller size 182 mm 202 mm 223 mm 235 mm 171 mm 195 mm 210 mm 224 mm
Description / kit no. 96590358 96590359 96590360 96590362 96590440 96590441 96590444 96590447
49 Impeller 11111111
Shaft seal kit *)
Volute casing size (D) (E) (G) (G)
Flow / head All All 30-47, 40-60 40-75, 40-90
BBVE 96591383 96591383 96591391 96591399
BBVV 96591446 96591446 96591460 96591462
BQQV 96626118 96626118 96626119 96626120
*) Consists of items 11a, 66, 67, 72a, 105, 109 and 116
Volute casing size (D) (E) (G)
Flow / head 40-21 50-27, 50-37 50-49 23-29, 25-32 30-44, 30-52 30-47, 40-60 40-75, 40-90
Pump housing 95028812 95028817 95028827
Motor bracket 95028813 95028814 95028833 95028813 95028833 95028828 95028829
Drain plug 95028811 95028802 95028811

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2.3 SF (H) and (I)
2.3.1 Drawing
TM03 1707 3305

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2.3.2 Service kits
Bolt kit
Pos.
Volute casing size (H) (I)
Flow - head 55-15 60-23, 70-27,70-41 60-11 65-20, 75-23, 80-34
Description / kit no. 96591474 96591472 96591474 96591472
26 Staybolts 1 1 1 1
28 Hexagon head screw 1 1 1 1
36 Nut 1111
Impeller kit - SF (H)
Cast iron Bronze
Pos.
Flow - head 55-15 60-23 70-27 70-41 55-15 60-23 70-27 70-41
Impeller size 124 mm 136 mm 149 mm 173 mm 117 mm 132 mm 142 mm 166 mm
Description / kit no. 96590372 96590373 96590375 96590376 96590460 96590461 96590462 96590464
49 Impeller 11111111
Impeller kit - SF (I)
Cast iron Bronze
Pos.
Flow - head 60-11 65-20 75-23 80-34 60-11 65-20 75-23 80-34
Impeller size 110 mm 127 mm 137 mm 158 mm 105 mm 127 mm 137 mm 158 mm
Description / kit no. 96590393 96590394 96590396 96590397 96590465 96590466 96590467 96590469
49 Impeller 11111111
Seal kit complete *)
Volute casing size/
Shaft seal type (H) (I)
BBVE 96591444 96591444
BBVV 96591466 96591466
BQQV 96626121 96626121
*) Consists of items 11a, 66, 67, 72a, 105, 109 and 116
Volute casing size (H) (I)
Flow / head 55-15 60-23, 70-27, 70-41 60-11 65-20, 75-23, 80-34
Motor bracket 95028813 95028833 95028836 95028837
Pump housing 95028831 95028835
Drain plug 95028811 95028811

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3. Torques and lubricants
This section shows the screws and nuts to be tightened to a certain torque, and the lubricants to be used.
Thread-Eze, part no. 96611372 (0.5 l).
Gardolube L 6034, part no. 00SV9995 (1 l).
Rocol 22, part no. 00RM2924 (1 kg).
Pos. Description Number Dim. Torque [lbs/ft] Torque [Nm] Lubricant
67
Impeller nut 1 7/16" UNF 11 15
Thread-Eze
Impeller screw 13/8"UNC 30 40
11/2"UNC 37 50
36 Nut 4 3/8" UNC 30 40
28 Hexagon head screw 4
3/8" UNC 30 40
1/2" UNC 37 50
5/8" UNC 44 60
72a O-ring 1 - - Rocol 22
105 Shaft seal 1 - - Soapy water
109 O-ring 1 - - Rocol 22

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4. Dismantling and assembly
4.1 General information
If it is necessary to dismantle the pump, either because it is choked or damaged, please follow the instructions in the following
sections.
Position numbers of parts refer to drawings.
Before dismantling the pump:
• Disconnect the electricity supply to the motor.
• Close the isolating valves, if fitted, to avoid draining the system.
• Remove the electric cable in accordance with local regulations.
• Note the centre of gravity of the pump to prevent it from overturning.
Before assembly:
• Clean and check all parts.
• Replace defective parts by new parts.
• Order the necessary service kits.
• Gaskets and O-rings should always be replaced when the pump is overhauled.
During assembly:
• Lubricate and tighten screws and nuts to correct torque as stated in section 3. Torques and lubricants.
4.2 SR (0.75 to 3.0 hp)
4.2.1 Dismantling
1. Remove the screws fixing the motor to the foundation.
2. Remove the nuts (pos. 36).
3. Pull out the motor including pump head and impeller out of the pump housing (pos. 6).
4. Remove the O-ring (pos. 72a).
5. Remove the nut (pos. 67) and pull off the impeller.
6. Pull off the rotating part of the shaft seal.
7. Remove the screws (pos.28) and pull off the pump head (pos. 2).
8. Press the rotating part of the shaft seal out of the pump head from behind.
4.2.2 Assembly
1. Fit the pump head to the motor.
2. Fit the screws (pos. 28) and tighten diagonally to the correct torque.
3. Fit the stationary part of the shaft seal with a soft tool. Be careful not to damage or touch the seal face with your fin-
gers.
4. Lubricate the shaft with soapy water and fit the rotating part of the shaft seal in the pump head. Be careful not to
damage or touch the seal face with your fingers.
5. Fit the impeller (pos. 49) and nut (pos. 67) and tighten to the correct torque.
6. Fit the O-ring (pos. 72a) to the pump head (pos. 2) and lubricate.
7. Fit the motor including pump head and impeller in the pump housing (pos. 6).
8. Tighten the nuts (pos. 36) and the screws holding the motor.

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4.3 SR (5.0 to 25 hp) and SF
4.3.1 Dismantling
1. Remove the screws fixing the motor to the foundation.
2. Remove the nuts (pos. 36).
3. Pull out the motor including pump head and impeller out of the pump housing (pos. 6).
4. Remove the O-ring (pos. 72a).
5. Remove the nut (pos. 67) and the washer (pos. 66) and pull off the impeller.
6. Remove the spring (pos. 11.a) and pull off the rotating part of the shaft seal.
7. Remove the screws (pos.28) and pull off the pump head (pos. 2).
8. Press the rotating part of the shaft seal out of the pump head from behind.
9. Remove the sleeve (pos. 116) and the O-ring (pos. 109).
4.3.2 Assembly
1. Fit the O-ring (pos. 109) and lubricate.
2. Fit the sleeve (pos. 116).
3. Fit the pump head (pos. 2) to the motor.
4. Fit the screws (pos. 28) and tighten diagonally to the correct torque.
5. Fit the stationary part of the shaft seal with a soft tool. Be careful not to damage or touch the seal face with your fin-
gers.
6. Lubricate the shaft with soapy water and fit the rotating part of the shaft seal. Be careful not to damage or touch the
seal face with your fingers.
7. Fit the impeller (pos. 49), washer (pos. 66) and nut (pos. 67) and tighten to correct torque.
8. Fit the O-ring (pos. 72a) to the pump head (pos. 2) and lubricate.
9. Fit the motor including pump head and impeller in the pump housing (pos. 6).
10.Tighten the nuts (pos. 36) and the screws holding the motor.