Safety Warning; Pre-Installation Checklist - Grundfos SPK Series Installation And Operating Instructions Manual

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
Pump Range
Nominal Flow Rate in m /h
3
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
MTR
Pump Range
Nominal Flow Rate in m /h
3
Number of Stages
Number of Impellers (is only used if the
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

SAFETY WARNING

CRK 4 - 160 / 2 -x -x -x -xxxx
32 - 2 /1 -1 -x -x -x -xxxx
Physical Changes
B = Oversized motor
P = Undersized motor (1 flange size smaller)
T = Oversized motor (2 flange sizes larger)
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
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.
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 nameplate-
rated 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.
WARNING:
1
/ and 10 HP motors (which
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