Goulds Pumps 3296M - IOM - Manual (Page 74)

INSTRUCTION
NOTE: Do not install low amp relay system until after pump is installed and operational. Various current
measurements must be taken to verify selection of system components and to adjust trip point of the controller.
I. Measure and record current levels
A. No load motor current (INL) = ______________
1. Use motor manufacturer's data or measure motor current with motor uncoupled from pump and
running.
B. Full load operating current (IFLO) = ____________
1. Operate pump at highest flow that the system will allow and measure motor current.
C. No flow operating current (INFO) = _____________
1. With pump operating, close discharge valve momentarily (no more than 1 minute) and measure
motor current.
▲
! WARNING
Continuous operation against closed discharge valve may vaporize liquid, creating an explosive hazard due to
confined vapor under HIGH pressure and temperature.
II. Verify selection of system components
A. Find the current transformer ratio and the minimu current setting from Table I. based on the full load
operating current (IFLO) measured above.
B. Ensure the transformer specified from Table I is the same as that supplied. If it is not, contact your
Goulds representative.
C. Ensure the minimum current setting from Table I is less than the no flow operating current (INFO)
measured above. It is is not, contact your Goulds representative.
Table I
IFLO
(Amps)
Current
Transformer
Ratio
Current
Transformer
(No. of Turns)
Minimum
Current Setting
(Amps)
Part
Number
4 to 8 None N/A 1.0 A03790A01
8 to 11 25/5 4 1.25 A03790A02
11 to 22 24/5 2 2.5 A03790A02
22 to 45 25/5 1 5.0 A03790A02
45 to 60 100/5 3 6.5 A03790A04
60 to 90 50/5 1 10 A03790A03
90 to 120 200/5 3 13 A03790A05
120 to 180 200/5 2 20 A03790A05
70
3296 M Group 6/05