Clark Cooper EH40-04 Installation And Operation Manual - Page 4
Browse online or download pdf Installation And Operation Manual for Control Unit Clark Cooper EH40-04. Clark Cooper EH40-04 7 pages.
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Unless noted otherwise, all solenoids are designed to operate at ±10% of the nominal voltage.
Check the valve nameplate for specific voltage and amperage requirements. If the ambient
and/or fluid temperature is elevated, it is suggested to keep that voltage no higher than nominal
to reduce to the risk of burnout (!).
Fuses or circuit breakers are recommended and should be sized according to the inrush
amperage and holding amperage requirements of the solenoid.
If the coil is oriented in an inconvenient direction, it may be re-oriented as described in the
SAFETY section of this manual. Either coil lead can be hot or neutral.
Standard AC and DC coil wiring:
Figure 1. Typical AC and DC coil wiring.
Figure 1 above shows the proper wiring for both AC and DC coils for the EH40 series valves. For
DC coils, one lead wire should be connected to the positive terminal and the other lead wire
should connect to the negative terminal. For AC coils, one lead wire should connect to the hot
terminal and the other lead wire should connect to the neutral terminal. These coils do not have
a ground wire. The coil has no polarity so either lead wire from the coil can be the positive lead
as both solenoid and valve performance will not be affected.
Optional DC Wiring With Flyback Diode:
Figure 2. DC coil wiring with flyback diode.
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