Torque limits for CRN pumps
Flange
CRN
Torque, Y-
direction
[lbf (N)]
Torque, Z-
direction
[lbf (N)]
Torque, X-
direction
[lbf (N)]
4" ANSI (DN 100)
95
169 (750)
214 (950)
281 (1250)
6" ANSI (DN 150)
125, 155
281 (1250)
349 (1550)
450 (2000)
8" ANSI (DN 200)
185, 215, 255
405 (1800)
483 (2150)
618 (2750)
6. Electrical connection
Follow the instructions for the motor
when carrying out the electrical
connections.
The electrical connection must be carried out by
an authorized electrician in accordance with local
regulations.
WARNING
Electric shock
Death or serious personal injury
‐
Before starting any work on the
product, make sure that the power
supply has been switched off and
that it cannot be accidentally
switched on.
‐
Connect the pump to an external
main switch close to the pump and
to a motor-protective circuit breaker
or a CUE frequency converter.
Make sure you can lock the main
switch in OFF position (isolated).
Type and requirements as specified
in EN 60204-1, 5.3.2.
WARNING
Electric shock
Death or serious personal injury
‐
Connect the pump to the same
protective-earth (PE) potential as
the motor if both motor bearings
are of the insulated type such as
ceramic bearings.
6.1 Maximum absorbed current
Some motors can absorb a maximum
current which is larger than the full load
current I
1/1
stated on the nameplate.
See the table below.
Motor type according to the
nameplate
Upper limit for
absorbed
current
Motors marked with both of
the below for 60 Hz NEMA:
•
full load amps (full load
current I
1/1
)
•
SFA (service factor amps)
SFA
Grundfos MG motors marked
with both of the below for 60
Hz:
•
full load current I
1/1
•
maximum current I
max
I
max
20
English (US)
