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Gorman-Rupp Pumps S3B65-E6 460/3 1217131 thru 861278 User Manual

Page 21

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OM−05170

CONTROL BOXES

TROUBLESHOOTING

PAGE D − 2

ELECTRICAL TESTING

Be certain to refer to the wiring diagram(s)
in the Installation Section of this manual be-
fore reconnecting any electrical compo-
nents which have been disconnected.

Test Equipment

A volt/amp/ohmmeter and megohmeter of ade-
quate range and quality will be required to conduct
the electrical tests. The suggested equipment indi-
cated below is commercially available, or an equiv-
alent substitute may be used.

Equipment

Use

Ammeter/

Voltmeter

To check AC Voltage

and current (amperage)

Ohmmeter

To measure resistance

(ohms) to ground

Voltage Imbalance

Each phase of the incoming three-phase power
must be balanced with the other two as accurately
as a commercial voltmeter will read. If the phases
are out of balance, contact your power company
and request that they correct the condition.