Grundfos SPK Series, CRK Series, MTR Series, SPK1, SPK2 Installation And Operating Instructions Manual
...
Installation and Operating Instructions
CONTENTS
SAFETY WARNING
Page 1
PRE-INSTALLATION CHECKLIST
INSTALLATION PROCEDURES
Pages 1-2
OPERATING THE PUMP
Page 3-4
MOTORS
Page 5
TROUBLESHOOTING
Page 6-7
LIMITED WARRANTY
Page 10
Please leave these instructions with the pump for future reference
SAFETY WARNING
Shock Hazard
A faulty motor or wiring can cause electrical shock that could be
fatal, whether touched directly or conducted through standing
water. For this reason, proper grounding of the motor frame to
the power supply's grounding terminal is required for safe
installation and operation.
In all installations, the above-ground metal plumbing should be
connected to the power supply ground as described in Article
250-80 of the National Electrical Code.
1. Confirm You Have The Right Pump
• Read the nameplate to ensure it is the one you ordered
• Compare the pump's nameplate data or its
performance curve (for head, GPM, etc.) with the
application in which you plan to install it.
Will it do what you expect it to do?
1.1 Pump Key for SPK/CRK
CRK 4 - 160 / 2 -x -x -x -xxxx
Pump Range
Nominal Flow Rate in m
Number of Stages x 10 (SPK x 1)
Number of Impellers
Code for Pump Version
Code for Pipework Connection
Code for Materials
Code for Shaft Seal and Rubber Pump Parts
1.2 Pump Key for MTR
Pump Range
Nominal Flow Rate in m
Number of Stages
Number of Impellers
pump has fewer impellers than chambers)
Number of impellers with reduced diameter
Code for Pump Version
Code for Pipework Connection
Code for Materials
Code for Shaft Seal
Code for Pump Version
Type of Pump
A = Standard pump
U = NEMA pump
Code for Pipe Work Connection
F = DIN flange
G = ANSI flange
J = JIS flange
W = Internal thread
U - G - A - BUBE
Type of Shaft Seal
A = O-ring seal with fixed seal driver
B = Rubber bellows seal
C = O-ring seal with a spring working
as a driver
R = O-ring seal with reduced diameter
stationary ring
H = Balanced seal, cartridge
E = O-ring seal, cartridge
Material of Rotating Ring
B = Carbon, plastic impregnated
C = Other types of carbon
U = Tungsten carbide
Q = Silicon carbide
V = Aluminum oxide
3
/h
MTR 32 - 2 /1 -1 -x -x -x -xxxx
3
/h
(is only used if the
Physical Changes
B = Oversized motor
P = Undersized motor
T = Oversized motor
X = Special product
Code for Materials
A = Standard materials
I = Nonstainless parts converted to SS
K = Intermediate bearings are bronze
X = Special product
D = Graflon® bearing
Materials of Secondary
Seal and other Parts
made of Plastic/Rubber
E = EPDM
V = FKM
K = Kalrez
X = Special product
Material of Stationary Ring
B = Carbon, plastic impregnated
C = Other types of carbon
U = Tungsten carbide
Q = Silicon carbide
V = Aluminum oxide
H = Carbon with imbedded Tungsten
(1 flange size smaller)
(2 flange sizes larger)
Carbide (Hybrid)
Electrical Work
All electrical work should be performed by a qualified electrician
in accordance with the latest edition of the National Electrical
Code, local codes and regulations.
WARNING:
The safe operation of this pump requires that it be grounded in
accordance with the National Electrical Code and local governing codes
or regulations. Connect the ground wire to the grounding screw in the
terminal box and then to the acceptable grounding point.
Pre-Installation Checklist
2. Check the Condition of The Pump
The shipping carton your pump came in is specially
designed around your pump during production to prevent
damage. As a precaution, it should remain in the carton
until you are ready to install it. At that point, look at the
pump and examine it for any damage that may have
occurred during shipping. Examine any other parts of the
shipment as well (electrical control boxes, etc) for any
visible damage. If you find any, contact the transportation
company in writing and ask to have it inspected.
3. Electrical Requirements
Supply Power
The incoming electrical supply should be verified so the
voltage, phase and frequency match that of the pump
motor. The proper operating voltage and other electrical
information can be found on the motor nameplate. These
motors are designed to run on ±10% of the nameplaterated voltage. For dual-voltage motors, the motor should
be internally connected to operate on the voltage closest to
the 10% rating, i.e., a 208 voltage motor wired per the 208
volt connection diagram. Wiring connection diagrams can
be found on the plates attached to the motor.
If voltage variations are larger than ±10%, do not
operate the pump.
Field Wiring
Wire sizes should be based on the current carrying
properties of a conductor as required by the latest edition of
the National Electrical Code or local regulations. Direct on
line (D.O.L.) starting is approved due to the extremely fast
run-up time of the motor and the low moment of inertia of
pump and motor. If D.O.L. starting is not acceptable and
reduced starting current is required, an auto transformer or
resistant starter should be used. It is suggested that a
fused disconnect be used for each pump where service
and standby pumps are installed.
Motor Protection
1. Single-Phase Motors:
With the exception of 7
require external protection) single-phase SPK/CRK
pumps are equipped with multi-voltage, squirrel-cage
induction motors with built-in thermal protection.
1
/2 and 10 HP motors (which
Page 1
Installation Procedures
DISCHARGE
Standard
Terminal Box
Position
Can be
rotated in
90˚ increments
2. Three-Phase Motors:
SPK/CRK/MTR Pumps with three-phase motors must be
used with the proper size and type of motor-starter to
ensure the motor is protected against damage from low
voltage, phase failure, current imbalance and overloads.
A properly sized starter with manual reset and ambientcompensated extra quick trip in all three legs should be
used. The overload should be sized and adjusted to the
full-load current rating of the motor. Under no
circumstances should the overloads be set to a higher
value than the full load current shown on the motor
nameplate. This will void the warranty.
Overloads for auto transformers and resistant starters
should be sized in accordance with the recommendations of the manufacturer.
4. Glance Through This Guide
Even if you are very familiar with the installation of this
pump, a quick glance through the remaining sections of this
guide may help you avoid a potential problem.
Installation Procedures
Installing The Pump
Pump Location
Grundfos SPK/CRK/MTR pumps are
designed for tank-mounting and may
be installed in either a vertical or
horizontal orientation. Where the
unit is to be installed so as to
position its mounting flange below
the liquid level or in a pressurized
tank, a gasket must be fitted
between the pump's mounting flange
and tank.
Pump Mounting
Model
SPK1/2/4/8 (NEMA) 5.5" (140) 6.3" (160) 7.1" (180) 1
SPK1/2/4 (IEC) 3.9" (100) 4.5" (115) 5.1" (130)
SPK8 (IEC) 5.5" (140) 6.3" (160) 7.1" (180) 1
CRK2/4 (NEMA) 5.5" (140) 6.3" (160) 7.1" (180) 1
CRK2/4 (IEC) 5.5" (140) 6.3" (160) 7.1" (180) 1
CRK8/16 (NEMA) 7.9" (200) 8.9" (225) 9.9" (250) 2.0" NPT 0.35" (9)
MTR32 7.5" (190) 8.7" (220) 9.9" (250) 2
MTR45/64 9.5" (240) 10.5" (265) 11.4" (290) 2
∅∅
∅A
∅∅
Pipework
The discharge ports of SPK/CRK pump units which are supplied
for use with NEMA motors have 1
Other discharge pipe sizes must be accommodated via the use
of appropriate adapter bushings.
Suction Conditions
The bottom of the pump strainer must be at least 1.0 inch above
the bottom of the tank. The pumps are designed to provide full
performance down to a level of A mm above the bottom of the
strainer.
Page 2
3
⁄8"
3
8
/
"
Mounting
(9.5 mm)
Holes (4)
∅∅
∅B
∅∅
1
⁄4 inch female NPT threads.
7.1" (180 mm)
C
6.3" (160 mm)
B
5.5" (140 mm)
A
Discharge
1
4
1/
"
Female NPT
∅∅
∅C Discharge Hole Dia.
∅∅
1
⁄4" NPT 0.28" (7)
3
⁄4" BSPT 0.28" (7)
1
⁄4" BSPT 0.28" (7)
1
⁄4" NPT 0.37" (9.5)
1
⁄4" BSPT 0.30" (7.5)
1
⁄2" ANSI 0.47" (12)
1
⁄2" ANSI 0.47" (12)
At a liquid level between A and B mm above the bottom of the
strainer, the built-in priming screw will protect the pump against
dry running.
MTR32, 45 and 64 pumps have no priming screw.
Figure 1: CRK2/4•SPK1/2/4/8
1"
PUMP TYPE A (IN.) B (IN.)
CRK2/4 1 5⁄8"1 1⁄8"
CRK8/16 2.0" 1.0"
SPK1/2/4/8 1
MTR32/45/64 2
5
⁄8" 1.0"
3
⁄4" –
In general, it is recommended that
the pump strainer be located as near
Figure 2: CRK8/16
as possible to the bottom of the tank.
This maximizes first-stage
submersion in condensate transfer
applications and maintains fluid
velocities in cutting lubricant
1"
Figure 3: MTR32/45/64
applications (see Figure 4).
Figure 4
1"
Separation of Particles
Out of consideration for the pump, the distribution system, the
cutting tools and the treated materials, cooling/cutting fluids
should, wherever possible, be free of particles before entering
the pump unit. The system's requirements as to the purity of the
pumped fluid depend on the machining methods, the treated
materials and other criteria. Filtration methods should be
matched to these requirements. Larger particles are unable to
enter the pump with the pumped fluid due to the effect of the
built-in inlet screen; particles
enter the SPK and CRK pumps, and particles
∅∅
∅2 mm or smaller are allowed to
∅∅
∅∅
∅4 mm or smaller
∅∅
are allowed to enter the MTR pump.
Bypass
A bypass line or pressure relief valve should be installed in the
discharge pipe if there is any possibility the pump may operate
against a closed valve in the discharge line (or in any other noflow condition). Flow through the pump is required to ensure
adequate cooling and lubrication of the pump is maintained.
The following table shows minimum flow rates:
PUMP TYPE MINIMUM FLOW RATE
SPK1 1.0 GPM
SPK2 1.2 GPM
SPK4 3.0 GPM
SPK8 5.3 GPM
CRK2 1.2 GPM
CRK4 3.0 GPM
CRK8 5.3 GPM
CRK 16 8.5 GPM
MTR 32 15 GPM up to 176°F (80°C)
MTR45 20 GPM up to 176°F (80°C)
MTR64 28 GPM up to 176°F (80°C)
35 GPM 176° - 194°F (80-70°C)
44 GPM 176° - 194°F
66 GPM 176°F - 194°F (80°C - 80°C)
Operating The Pump
DISCHARGE
Standard
Terminal Box
Position
Can be
rotated in
90˚ increments
Position of Terminal Box
The motor terminal box can be turned to any of four positions in
90° steps. To rotate the terminal box, remove the four bolts
securing the motor to the pump; turn the motor to the desired
location; replace and securely tighten the four bolts.
Boiler Feed Installations
If the pump is being used as a
DISCHARGE
boiler-feed pump, make sure the
pump is capable of supplying
sufficient water throughout its
entire evaporation and pressure
ranges. Where modulating
control valves are used, a
bypass around the pump must
be installed to ensure pump
lubrication.
Standard
Terminal
Box
Position
Can be
rotated in
90° increments
Operating the Pump
Replacing The Motor
If the motor is damaged due to bearing failure, burning or
electrical failure, the following instructions detail how to remove
the motor for replacement. It must be emphasized that motors
used on SPK/CRK/MTR pumps are specially selected to our
rigid specifications. Replacement motors must be of the same
frame size.
Removing the Old Motor
1. Remove the coupling guard screens.
2. Using the proper
cap screws in the coupling.
3. With the correct size wrench, loosen and remove the
four bolts which hold the motor to the discharge section
of the pump end.
4. Lift the motor straight up until the shaft is free from the
coupling.
Installing the New Motor
1. Thoroughly clean the surfaces of the motor and pump
end mounting flanges. Set the motor on the pump end.
2. Place the terminal box in the desired position by rotating
the motor.
3. Insert the mounting bolts, then tighten diagonally and
evenly.
4. Using a larger screwdriver, raise the pump shaft by
placing the tip of the screwdriver under the coupling and
carefully elevating the coupling to its highest point.
Note: The shaft can only be raised approximately 0.20
inches (5 mm).
5. Now
lower
you just raised it (approximately the thickness of a
dime), and retighten the
coupling. Be sure to tighten the top and bottom screws
on one side of the coupling and then the other.
the coupling screws to the following specifications.
metric
allen wrench, loosen the four
the shaft halfway back down the distance
metric
cap screws in the
Coupling
Bolt Size
M6
M8
M10
Minimum Torque
Specifications
10 ft-lbs
23 ft-lbs
46 ft-lbs
Torque
6. Check to see that the gaps between the coupling halves
are equal. Loosen and re-adjust if necessary.
7. Be certain the pump shaft can be rotated by hand. If
the shaft cannot be rotated or it binds, disassemble and
check for misalignment.
8. Replace the two coupling guard screens.
Starting The Pump The First Time
1. Air Elimination
As long as the pump body is partially submerged in fluid, the
pump may be started against an open or a closed discharge
line. If the discharge line is open, the air will quickly escape
through the discharge pipe. If the discharge line is closed,
the air will be pressed down through the pump body and out
into the tank so that the discharge pressure will quickly reach
its maximum (shutoff) level.
If the pump is fitted with a vent valve, this valve must be
opened while running the pump against a closed valve.
Once a steady stream of liquid is running out of this vent
valve it can be closed.
2. Check the Direction of Rotation
a. Switch the POWER OFF.
b. Make sure the pump has been filled and vented.
c. Remove the coupling guard and rotate the pump shaft
to be certain it turns freely. Replace the coupling
guard.
d. Verify that the electrical connections are in accordance
with the wiring diagram on the motor.
e. Switch the power on and observe the direction of
rotation. When viewed from the top, the pump
should rotate counter-clockwise.
f. To reverse the direction of rotation, first switch OFF the
supply power.
g. On three-phase motors, switch any two power leads at
the load side of the starter. On single-phase motors,
refer to the connection diagram on the nameplate.
Change wiring as required.
h. Switch the power ON and check for proper motor
rotation.
Starting And Adjusting
Before starting the pump, make sure that:
1. The pump body is partially submerged in the fluid.
2. The direction of rotation is counter-clockwise when
viewed from the top.
3. All piping connections are tight and the pipes are
adequately supported.
4. The pump inlet screen is clean and unblocked.
5. Depending on the application, it may be necessary to
start the pump against a closed discharge valve in order
to prevent system damage due to water hammer. If so,
this valve should be opened in a gradual manner after the
pump is started. Unless used as a flow throttling device,
make sure this valve is completely opened.
6. Check and record the voltage and amperage of the
motor. Adjust the motor overloads if required.
7. Check and record operating pressures if pressure
gauges have been installed.
Page 3
Operating The Pump
8. Check all controls for proper operation. If pump is
controlled by a pressure switch, check and adjust the cutin and cut-out pressures. If low-water-level controls are
used, be sure the low-level switch is properly adjusted so
the pump cannot run if the pump should break suction.
Improper Operation
No Flow
Under no circumstances should the pump be operated for any
prolonged periods of time without flow through the pump.
This can result in motor and pump damage due to overheating. A
properly sized relief valve should be installed to allow sufficient
water to circulate through the pump to provide adequate cooling
and lubrication of the pump bearings and seals.
Pump Cycling
Pump cycling should be checked to ensure the pump is not starting
more than:
20 times per hour on 1/2 to 5 HP models
15 times per hour on 7 1/2 to 15 HP models
10 times per hour on 20 to 40 HP models
Rapid cycling is a major cause of premature motor failure due to
increased heat buildup in the motor. If necessary, adjust controls
to reduce the frequency of starts and stops.
Maintenance
Grundfos SPK/CRK/MTR multi-stage centrifugal pumps installed in
accordance with these instructions and sized for correct
performance will operate efficiently and provide years of service.
The pumps are water-lubricated and do not require any external
lubrication or inspection. The motors will require periodic
lubrication as noted in the following paragraphs.
Do not over grease the bearings. Over greasing will cause
increased bearing heat and can result in bearing/motor
failure.
Periodic Safety Checks
At regular intervals depending on the conditions and time of
operation, the following checks should be made:
1. Pump meets required performance and is operating
smoothly and quietly.
2. There are no leaks, particularly at the shaft seal.
3. The motor is not overheating.
4. Remove and clean all strainers or filters in the system.
5. Verify the tripping of the motor overload protection.
6. Check the operating of all controls. Check unit control
cycling twice and adjust if necessary.
7. If the pump is not operated for unusually long periods,
the unit should be maintained in accordance
with these instructions. In addition, if the pump is not
drained, the pump shaft should be manually rotated or
run for short periods of time at monthly intervals.
If the pump fails to operate or there is a loss of performance,
refer to the Troubleshooting section on page 6.
Motor Lubrication
Electric motors are pre-lubricated at the factory and do not require
additional lubrication at start-up. Motors containing sealed
bearings do not require additional lubrication during the first 15,000
hours of operation. Motors with grease fittings should only be
lubricated with a lithium based grease.
Service Conditions
Severity Temperature Atmospheric
of Service (Maximum) Contamination
Standard 104°F (40°C) Clean, little corrosion
Severe 122°F (50°C) Moderate dirt, corrosion
Extreme >122°F (50°C) Severe dirt, abrasive
Ambient
or Class H dust, corrosion
insulation
Approved Types of Grease
Shell Dolium R
Chevron SRI#2
Or compatible
equivalent
type of grease
Lubrication Schedule
NEMA/(IEC) Service Service Service Grease to Add Grease to Add
Frame Size Interval Interval Interval Oz./(Grams) In
Up through 210 (132) 5500 hrs. 2750 hrs. 550 hrs. 0.30 (8.4) 0.6 (2)
Over 210 through 280 (180) 3600 hrs. 1800 hrs. 360 hrs. 0.61 (17.4)* 1.2 (3.9)
Over 280 up through 360 (225) 2200 hrs. 1100 hrs. 220 hrs. 0.81 (23.1)* 1.5 (5.2)
Over 360 (225) 2200 hrs. 1100 hrs. 220 hrs. 2.12 (60.0)* 4.1 (13.4)
*The grease outlet plug MUST be removed before adding new grease.
Standard Severe Extreme Weight of Volume of
3
/(Teaspoons)
Page 4
The information below was updated March 30, 2001, but is subject to change without notice.
*
Grundfos makes no claims or warranties regarding the accuracy of the information herein.
Motors
Totally Enclosed Fan Cooled (TEFC) Baldor Motors*
60 HZ - Two Pole (3450 RPM)
HP PH FACTOR FRAME VOLTS LOAD START S.F. EFF . FACTOR AT 25 DEG C CLASS CODE NO.
1 1/2 1 1.3 56C 115/208-230 17/9.5-8.6 79.8/43.8-39. 9 20. 4/11.3-10.2 71.0 79 1. 178/1.302 B K 85.700005
1 1/2 3 1. 15 56C 208-230/460 5.0-4.6/2. 3 35.4-32/16 3.3-3/2.5 75.5 76 11. 2-12.3 B G 85.600005
7 1/2 1 1. 15 213TC 208-230 34.3-31 240-217 39.3-35.5 82.0 91 .2109/.2331 H F 85.700017
7 1/2 3 1. 15 213TC 208-230/460 19-17.2/8. 6 168. 1-152/76 21.7-19.6/9.8 87.5 94 1.4-1.5 F L 85.600017
*** Inf ormation unavailable at time of update.
SERVICE NEMA FULL LOCKED ROT OR/ POWER RESISTANCE INS. KVA PART
1/3 1 1.35 56C 115/230 2 24.5/12. 2 7.6/3.8 55.0 68 6. 489/7.172 B K 85.680001
1/3 3 1.35 56C 208-230/ 460 1.5-1.4/.7 11-10/5 1.7-1.6/. 8 70.0 65 38.2-42.3 B K 85. 580001
1/2 1 1.6 56C 115/208-230 7.4/4.1-3.7 36/ 19.8-18 9.8/5.2-4.9 62.0 69 3.382/3.738 B K 85.700002
1/2 3 1.25 56C 208-230/ 460 2. 1-2/1 12.4-11.3/5.6 2.6-2.4/1. 2 68. 0 63 34.06/37. 64 B J 85.600002
3/4 1 1.25 56C 115/ 208-230 9.6/5-4. 8 51/ 28-25.5 11.4/6-5.7 66.0 74 2.332/2.578 B K 85.700003
3/4 3 1.25 56C 208-230/ 460 2.7-2.6/.3 33-30/15 3.1-3/1.5 74.0 73 23.4-25.88 B K 85. 600003
1 1 1. 25 56C 115/230 11/5.5 77/38.5 14.4/7. 2 66. 0 81 2.347/2. 594 B K 85.700004
1 3 1. 25 56C 208-230/460 3.7-3.6/1. 8 24.3-22/11 4.1-4/2 75.5 76 15.9-17. 5 B H 85.600004
2 1 1. 15 56C 115/230 23/11.5 158.4/ 79.2 25.4/12.7 74.0 82 0.872 F K 85.700006
2 3 1. 15 56C 208-230/460 5.7-5.4/2. 7 38.7-35/17.5 6.3-6/3 78.5 93 10.7-11.8 B H 85.600006
3 1 1. 15 56C 115/208-230 30/16.5-15 172/95.1-86 32.2/16.1 77.0 87 0. 593 F H 84.6346075
3 3 1. 15 56C 208-230/460 7.8-7.4/3. 7 59.7-54/27 *** 82.5 87 5.5-6.1 F J 84. 6326074
3 1 1. 15 182TC 115/208-230 29/ 16-14.5 170/93. 5-85 32.8/18-16.4 75.0 88 .569/. 629 F H 85.700008
3 3 1. 15 182TC 208-230/460 8. 2-7.8/3.9 77. 4-70/35 9-8.6/.3 81.5 89 4.9-5.4 F K 85.600008
5 1 1. 15 213TC 230 22 170 25 80.0 89 0. 29 F J 85.700012
5 3 1. 15 184TC 208-230/460 13. 2-12/6 103.9-94/47 15-13.6/6.8 85.5 93 2.6-2.9 F K 85.600012
10 1 1. 15 213TC 230 40 233.5 46 85.5 97 *** F F 85.700022
10 3 1. 15 215TC 208-230/460 25-24/12 232.2-210/105 28.3-27.2/13.6 85.5 91 1.07-1.18 F J 85. 600022
15 3 1. 15 254TC 208-230/460 38-34/17 376-340/170 43.4-38.8/19.4 86. 5 94 .62-.69 H L 85.600024
20 3 1. 15 254TC 230/460 46/23 420/210 52.4/26.2 88.5 92 0. 36 F K 85.600035
25 3 1. 15 284TSC 208-230/460 61-58/29 482. 1-436/218 70-66/33 91.0 89 .30-.33 F H 85.600026
30 3 1. 15 286TSC 230/460 72/36 444/222 80/40 88.5 88 0.319 F G 85. 600027
40 3 1. 15 286TSC 230/460 94/47 580/290 105.2/ 52.5 90.2 89 0. 176 F *** 85.600032
AMPS
LINE TO LI NE GRUNDFOS
Open Drip Proof (ODP) Baldor Motors*
60 HZ - Two Pole (3450 RPM)
SERVICE NEMA FULL LOCKED ROTOR/ POWER RESISTANCE I NS. KVA PART
HP PH FACTOR FRAME VOLTS LOAD START S.F . EFF. FACTOR AT 25 DEG C CLASS CODE NO.
1/3 1 1.35 56C 115 -230 6-3 28- 14 7-3. 5 55. 0 68 7. 12 B K 84. Z00023
1/3 3 1. 35 56C 208-230/460 1.5-1.4/.7 20-10/5 1. 7-1. 6/.8 70.0 65 38.20-42.3 B J 85.600001
1/2 1 1.25 56C 115/ 208-230 7 .2/4-3. 6 30/ 16.58-15 8/4. 4-4 66.0 6 6 4 .72 B H 84. Z00024
1/2 3 1. 25 56C 208-230/460 2.1-2/1 13.27-12/6 2.6-2.4/1. 2 68.0 63 35. 1 B J 84.Z00001
3/4 1 1. 25 56C 115/208-230 9.6/5.3-4.8 56/ 30.96-28 11. 4/6.3-5.7 66. 0 74 2.5 B K 84. Z00025
3/4 3 1. 25 56C 208-230/460 9. 6-5. 3/4.8 16.81-15.2/7. 6 3.1-3/1. 5 74.0 73 24.6 B K 84. Z00003
1 1 1.25 56C 115/208-230 14/7.3-7 92/50. 87-46 16/ 8.8-8 65.0 65 1.63 B L 84. Z00026
1 3 1 .25 56C 208-230 /460 3. 2-3/1.5 24. 33-22/11 4. 2-3.8/1. 9 75.5 76 16. 7 B H 84.Z 00005
1 1/2 1 1.15 56C 115/208-230 18/8. 7-9.0 120.8/ 66.8-60.4 19.6/10. 8-9.8 68.0 77 1. 24 B G 84.Z00027
1 1/2 3 1.15 56C 208-230/460 4.9-4.6/2.3 40.7-36.8/18.4 5.3-5/ 2.5 80.0 74 8.53 B K 84. Z00007
2 1 1.15 56C 115/208-230 24/ 12 160/88.5-80 26/13 70. 0 75 0.844 B G 84.Z00028
2 3 1.15 56C 208-230/460 5.9-5.6/2.8 77.4-70.4/35. 2 6.5-6. 2/3.1 81. 5 89 10.7 B H 84.Z 00009
3 1 1 .15 56C 2 30 13 108 14.8 82.5 93 0.614 B K 84.624 6075
3 3 1.15 56C 208-230/460 8.4-8/4 66.35-60/30 9.5-9/4.5 82.5 89 5.6 B J 84.6226075
3 1 1.15 182TC 115/208-230 28/ 14. 7-14 148/81.83-74 32/18.3-16 78. 0 88 0.175 B G 84.Z00029
3 3 1.15 182TC 208-230/460 8.4-8/4 66. 35-60/30 9.5-9/ 4.5 82.5 89 5.6 B J 84.Z 00011
5 1 1.15 213TC 208-230 28-26 167.2-152 31-28.7 78.0 82 . 3259/.3602 B G 84.Z 00030
5 3 1 .15 184TCZ 208-2 30/460 13- 12/6 137. 8-124.6/ 62.3 14.7-13. 6/6.8 87. 5 90 2. 83 B L 84.Z0 0013
7 1/2 1 1.15 213TC 208-230 38-37 212.3-192 42-41 81.0 82 0.23 B G 84.Z00031
7 1/2 3 1.15 215TC 208-230/460 19-18/9 168.1-152/76 21-20/10 85.5 91 2 B J 84. Z00015
10 1 1.15 215TC 230 46 280 51.7 83.0 86 0.163 B G 84.Z00032
10 3 1. 15 215T C 2 08-230/460 2 7-25/13 195. 5-176.8/8 8.4 3 0-28/14 85. 5 91 1 .47 B H 84. Z00017
15 3 1.15 254TC 208-230/460 38-36/18 289.7-262/131 43-41/20.5 85.5 92 0.961 F G 84.Z00019
20 3 1.15 254TC 230/460 *** *** *** *** *** *** *** *** 84.Z03374
25 3 1.15 284TSC 230/460 59/29.5 372/186 67/33. 5 92.4 86 0.488 B G 84.Z00021
30 3 1.15 284TSC 230/460 73/36.5 432/216 81.2/40.6 90. 2 86 .3373/. 3728 F G 84.Z00022
40 3 1.15 286TSC 230/460 100/50 540/270 114.04/57.02 90.2 83 .1919/ .2121 B F 84.Z00033
*** Information unavailable at time of update.
AMPS
LINE TO LI NE GRUNDFOS
IEC IP55, IM 3611 (V18)*
60 HZ - Two Pole (3450 RPM)
Kw HP PH S. F. VOL TS LOAD ROT OR EFF . FACTO R RESISTANCE CLASS PART NO.
0.25 1/3 3 1. 0 220-255/380-440 1.10-1.02/0. 63-0.59 6.1-7.1/3.5-4.1 73/73 0.86/0.77 23.5 F 85. 105501
0.37 1/2 3 1. 0 220-255/380-440 1.50-1.44/0. 87-0.83 8.3-9.4/4.8-5.4 78/79 0.85/0.76 21.2 F 85. 805102
0.55 3/4 3 1. 0 220-255/380-440 2.15-2.05/1. 25-1.20 10.8-12.3/6.3-7.2 80.5/82 0.85/0.76 14.8 F 85. 805103
0.75 1 3 1.0 220-255/380-440 2.85-2.70/1.65-1.55 17.1-18.9/9.9-10.9 82/84 0.85/ 0.78 10.4 F 85.805104
1.1 1 1/2 3 1.0 220-255/380-440 4.15-3.80/2. 40-2.20 24.5-27.7/14.1-6.1 82/85 0.86/0.80 6.85 F 85.805105
1.5 2 3 1.0 220-277/380-480 5.70-5.00/3.30-2.90 33.6-42.0/19. 5-24.4 80.5/82 0.89/0.78 3.8 F 85.805906
2.2 3 3 1.0 220-277/380-480 8.05-6.95/4.65-4.00 52.3-66.0/31. 0-38.0 83/84.5 0.90/0.81 2.5 F 85.805908
3 4 3 1.0 220-277/380-480 10.6-9.00/6.10-5.20 78.4-99.0/45.1-57.2 86/87 0. 90/0.83 1.74 F 85.805810
4 5.5 3 1.0 220-277/380-480 13.6-11.4/7.85-6.60 109-137/63-79 87/88 0.92/ 0.85 1.64 F 85.805413
5.5 7 1/2 3 1.0 220-277/380-480 18.8-15.6/10. 8-9.00 154-193/89-112 87.5/ 89.5 0.92/0.85 1.12 F 85.807417
7.5 10 3 1.0 220-277/380-480 25.5-22.6/14.6-13.0 242-262/139-151 88.5/90 0.92/0.80 0.685 F 85.807422
11 15 3 1.0
220-277/380-480
37.0-30.2/21. 4-17.4 244-290/141-167 89/91 0.90/0.86
AMPERAGE
FULL LOCKED FULL LOAD POWER LINE TO LINE INS. GRUNDFOS
.37
Ω
F
85.807424
Page 5
Troubleshooting
Preliminary Checks
Supply Voltage
How to Measure
Use a volt meter, (set to the proper
scale) measure the voltage at the pump
terminal box or starter.
On single-phase units, measure
between power leads L1 and L2 (or L1
and N for 115 volt units). On threephase units, measure between:
• Power leads L1 and L2
• Power leads L2 and L3
• Power leads L3 and L1
What it Means
When the motor is under load, the voltage should be within
±10% of the nameplate voltage. Larger voltage variation may
cause winding damage and indicate a poor electrical supply. The
pump should not be operated until these variations have been
corrected.
If the voltage constantly remains high or low, the motor should
be changed to the correct supply voltage.
Current Measurement
How to Measure
Use an ammeter, (set on the proper
scale) to measure the current on each
power lead at the terminal box or starter.
Current should be measured when the
pump is operating at constant discharge
pressure.
Winding Resistance
How to Measure — NEMA
Turn off power and disconnect
the supply power leads in the
pump terminal box. Using an
ohmmeter, set the scale selector
to R x 1 and zero adjust the
meter by touching the two
ohmmeter leads together.
Touch the leads of the ohmmeter to two motor leads.
Single phase motors - touching the leads of the ohmmeter
to the two outgoing "hot" motor leads (either a single motor
lead or combination of leads joined together) will measure
the main winding's resistance.
Three phase motors - touching the leads of the ohmmeter
to any two hot leads will measure that winding's resistance.
Repeat for all three possible lead combinations (L
L
and L3, L1 and L3)
2
and L2,
1
How to Measure — IEC
Turn off power and disconnect the supply power leads in the
pump terminal box. Using an ohmmeter, set the scale selector
to R x 1 and zero adjust the meter by touching the two
ohmmeter leads together.
Touch the leads of the ohmmeter to two motor terminals as
follows:
Delta Hookup Y Hookup
Y
What it Means
If the amp draw exceeds the listed service factor amps (SFA) or
if the current imbalance is greater than 5% between each leg on
three-phase units, check the following:
1. Burned contacts on motor starter.
2. Loose terminals in starter/terminal box or possible wire
defect.
3. Too high or too low supply voltage.
4. Motor windings are shorted or grounded. Check winding
and insulation resistances.
5. Pump is damaged causing a motor overload.
Lead-To-Ground Resistance
How to Measure
Turn off power and disconnect
the supply power leads in the
pump terminal box. Using an
ohmmeter, set the scale selector
to R x 100 and zero adjust the
meter by touching the two
ohmmeter leads together. Touch
one ohmmeter lead to a motor lead and one to ground. Repeat
for each lead. If measured resistance does not exceed
1,000,000 ohms, motor is bad and in need of replacement.
Terminals: U and X Terminals: U and X
V and Y V and Y
W and Z W and Z
Z
W2
U
U1
INCOMING POWER SUPPLY
X
U2
V
V1
V2
W1
Y
W
Z
W2
U
U1
INCOMING POWER SUPPLY
X
U2
V
V1
V2
W1
Y
W
What it Means
If all ohm values are normal, the motor windings are neither
shorted nor open. If any one ohm value is less than normal
(-25%), that motor winding may be starting to short. If any one
ohm value is greater than normal (+25%), the winding may be
starting to open. If some values are high and some are low, the
leads may be connected incorrectly, or they may have a break in
the insulating jacket.
Page 6
Troubleshooting
Diagnosing Specific Problems
The following checklist should help you troubleshoot most of the problems you may encounter during installation.
If The Pump... It May Be Caused By... Check This By.. Correct It By...
Does Not Run
Pump Runs But
At Reduced
Capacity or Does
Not Deliver Water
Fuses Blow or
Circuit Breakers or
Overload Relays
Trip
No power at pump panel
Fuses are blown or circuit
breakers are tripped
Motor starter overloads are
burned or have tripped out
Starter does not energize
Defective controls
Motor is defective
Defective capacitor.
(Single-phase motors)
Pump is bound
Wrong rotation
Pump body not partially
submerged
Strainers, inlet screen or
valves are clogged
Entrained air in pumpage
Fluid cavitating
Pump worn
Pump impeller or guide vane
is clogged
Low voltage
Motor overloads are set too
low
Three-phase current is
imbalanced
Motor is shorted or grounded
Wiring or connections are
faulty
Check for voltage at panel
Turn off power and remove fuses. Check for continuity
with ohmmeter
Check for voltage on line and load side of starter
Energize control circuit and check for voltage at the
holding coil
Check all safety and pressure switches for operation.
Inspect contacts in control devices
Turn off power and disconnect wiring. Measure the
lead to lead resistances with ohmmeter (RX-1).
Measure lead to ground values with ohmmeter (RX100K). Record measured values
Turn off power and discharge capacitor. Check with
ohmmeter (RX-100K).
Turn off power and manually rotate pump shaft
Check wiring for proper connections
Turn pump off, close isolation valve(s). Check fluid
level
Remove strainer, screen or valve and inspect
Check tank conditions for cascading fluid or vortexing
Compare pump NPSH requirements to available NPSH
at pump flow rate
Install pressure gauge, start pump, gradually close the
discharge valve and read pressure at shutoff
Disassemble and inspect pump passageways
Check voltage at starter panel and motor
Cycle pump and measure amperage
Check current draw on each lead to the motor
Turn off power and disconnect wiring. Measure the
lead-to-lead resistance with an ohmmeter (RX-1).
Measure lead-to-ground values with an ohmmeter
(RX-100K) or a megaohm meter. Record values
Check proper wiring and loose terminals
If no voltage at pump panel, check feeder panel for tripped
circuits
Replace blown fuses or reset circuit breaker. If new fuses blow
or circuit breaker trips, the electrical installation, motor and
wires must be checked.
Replace burned heaters or reset. Inspect starter for other
damage. If heater trips again, check the supply voltage and
starter holding coil.
If no voltage, check control circuit fuses. If voltage, check
holding coil for shorts. Replace bad coil.
Replace worn or defective parts or controls
If an open or grounded winding is found, remove motor and
repair or replace
When the meter is connected to the capacitor, the needle
should jump towards 0 ohms and slowly drift back to infinity
( ). Replace if defective
If shaft does not rotate easily, check coupling setting and adjust
as necessary. If shaft rotation is still tight, remove pump and
inspect. Disassemble and repair
Correct wiring
Provide submergence by increasing fluid level in tank or sump;
alternatively by repositioning pump at lower level
Clean and replace strainer, screen and/or valves
Install baffle(s) in tank. Relocate inlet pipe. Decrease pump
flow rate
Decrease pump flow rate and/or fluid temperature. Increase
first-stage submersion
Convert measured pressure (in PSI) to head (in feet): (Measured
PSI x 2.31 ft/PSI = _______ ft.) Refer to the specific pump
curve for shutoff head for that pump model. If head is close to
curve, pump is probably OK. If not, remove pump and inspect
Remove any foreign materials found
If voltage varies more than ±10%, contact power company.
Check wire sizing
Increase heater size or adjust trip setting to a maximum of
motor nameplate (full load) current
Must be within ±5%. If not, check motor and wiring. Rotating
all leads may eliminate this problem
If an open or grounded winding is found, remove the motor,
repair and/or replace
Tighten loose terminals. Replace damaged wire
Pump is bound
Defective capacitor.
(Single-phase motors)
Motor overloads at higher
ambient temperature than
motor
Turn of power and manually rotate pump shaft
Turn off power and discharge capacitor. Check with
ohmmeter (RX-100K)
Use a thermometer to check the ambient temperature
near the overloads and motor. Record these values
If shaft does not rotate eaily, check coupling setting and adjust
as necessary. If shaft rotation is still tight, remove pump and
inspect. Disassemble and repair
When the meter is connected to the capacitor, the needle
should jump towards 0 ohms and slowly drift back to infinity
( ). Replace if defective.
If ambient temperature at motor is lower than at overloads,
especially where temperature at overloads is above 104°F
(40°C), ambient-compensated heaters should replace standard
heaters
Page 7
Notes
Page 8
Notes
Page 9
LIMITED WARRANTY
Products manufactured by GRUNDFOS PUMPS CORPORATION (Grundfos) are warranted to the original user only to be
free of defects in material and workmanship for a period of 18 months from date of installation, but not more than 24 months
from date of manufacture. Grundfos' liability under this warranty shall be limited to repairing or replacing at Grundfos' option,
without charge, F.O.B. Grundfos' factory or authorized service station, any product of Grundfos manufacture. Grundfos will
not be liable for any costs of removal, installation, transportation, or any other charges which may arise in connection with
a warranty claim. Products which are sold but not manufactured by Grundfos are subject to the warranty provided by the
manufacturer of said products and not by Grundfos' warranty. Grundfos will not be liable for damage or wear to products
caused by abnormal operating conditions, accident, abuse, misuse, unauthorized alteration or repair, or if the product was
not installed in accordance with Grundfos' printed installation and operating instructions.
To obtain service under this warranty, the defective product must be returned to the distributor or dealer of Grundfos products
from which it was purchased together with proof of purchase and installation date, failure date, and supporting installation
data. Unless otherwise provided, the distributor or dealer will contact the Grundfos factory or authorized service station for
instructions. Any defective product to be returned to the factory or service station must be sent freight prepaid;
documentation supporting the warranty claim and/or a Return Material Authorization must be included if so instructed.
GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSSES, OR
EXPENSES ARISING FROM INSTALLATION, USE OR ANY OTHER CAUSES. THERE ARE NO EXPRESS OR IMPLIED
WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, WHICH EXTEND
BEYOND THOSE WARRANTIES DESCRIBED OR REFERRED TO ABOVE.
Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages and some jurisdictions
do not allow limitations on how long implied warranties may last. Therefore, the above limitations or exclusions may not
apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from jurisdiction
to jurisdiction.
Page 10
Grundfos Pumps Corporation • 3131 N. Business Park Avenue • Fresno, CA 93727
Customer Service Centers: Allentown, PA • Fresno, CA
Phone: (559) 292-8000 • Fax: (559) 291-1357
Canada: Oakville, Ontario • Mexico: Apodaca, N.L.
Visit our website at www.us.grundfos.com
L-SPK-TL-003 Rev. 4/01
PRINTED IN USA
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