11
4.6 Leak Detection Assembly
Figure 10
If the diaphragm leak detection system was specified with an optional pressure switch,
install electrical wiring and conduit in accordance with local electrical codes. The switch
is rated as follows:
The switch is rated as follows:
30 VDC or 125 VAC 1 Ampere Resistive.
The switch should be wired such that if a leak condition is detected, the pump will be
shut down. The switch is the SPDT (single pole, double throw) type and can therefore
be connected to either open or to close upon detection of 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
T
HE ENCLOSURE IS LABELED WITH APPLICABLE SAFETY AGENCY RATINGS FOR
HAZARDOUS AREA INSTALLATION
.
S
INCE THE SWITCH IS OF THE MECHANICAL CONTACT
TYPE
,
IT CAN NEVER QUALIFY AS NON
-
SPARKING
(
NON
-I
NCENDIVE
,
OR
“M”)
FOR
OCCASIONAL AND SHORT
-
TERM HAZARDOUS AREA USE
.
P
ROTECTION MUST BE
PROVIDED BY THE ENCLOSURE
.
4.7 Drive Motor Installation
4.7.1 Motor Rotation
Motor can be operated in either direction, clockwise or counterclockwise. Verification of
motor direction is not necessary at startup.
4.7.2 Motor Installation
PULSAR Shadow® pumps may be shipped with the drive motor packed separately.
This is done to avoid damage during transport.
