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5.5 PULSAlarm Leak Detection Electrical Connections
If equipped with an optional pressure switch, install electrical wiring and conduit in accordance with
local electrical codes.
Figure 17
The switch is rated as follows:
Voltage
115VAC
Phase
Single
Load
1.0 Amp (Resistive)
Contacts
NO/NC (SPDT)
Connection
Flying Leads, 20AWG
Max Pressure
3000PSI
The switch is the SPDT (single pole, double throw) type and can therefore be connected to either
open or to close upon detection of a diaphragm leak condition. Contacts
or wires are identified as follows:
Normally Open (NO)
Wire Color White
Normally Closed (NC)
Wire Color Red
Common (COM)
Wire Color Black
THE ENCLOSURE IS LABELED WITH APPLICABLE SAFETY
AGENCY RATINGS FOR HAZARDOUS AREA INSTALLATION. SINCE THE SWITCH IS OF
THE MECHANICAL CONTACT TYPE, IT CAN NEVER QUALIFY AS NON-SPARKING (NON-
INCENDIVE, OR “M”) FOR OCCASSIONAL AND SHORT-TERM HAZARDOUS AREA USE.
PROTECTION MUST BE PROVIDED BY THE ENCLOSURE.
Go to Section 11 Appendix I for further description and instructions for the PULSAlarm Leak
Detection System.
