Wiring Instructions - Flowserve Ultraswitch PMV WS Series User Instructions

6.1 Wiring instructions

• Perform all wiring according to the
wiring diagram found on the label
in the housing (see picture) and
instructions given below.
• Make sure that the ground wire is
correctly connected
• Seal unused entries with proper and
suitable conduit plugs.
The WS/WM Ultraswitch™ enclosures feature pre-
wired switches. All user connections are made at a
numbered terminal strip. Both external and internal
grounding locations have been provided for use
in installation. A wiring diagram is located on the
product label and indicates which terminal number
corresponds to which switch contact: normally open,
normally closed, common, etc. Follow the wiring
diagram, and electric code to connect switches to
your system.
For field wiring: ensure that any excess wire lengths
or loops are routed away from any moving parts
and are short enough, or secured to ensure a 1/4"
clearance between the wire and the inside surface of
the switchbox cover.
Note: for all magnetically tripped proximity switches,
the top switch should only be used to indicate the
clockwise position: the bottom switch should only be
used to indicate the counter-clockwise position. Any
deviation from these settings may result in erratic
indication.
Solenoids may also be wired through the WS/WM
Ultraswitch™ enclosure. At least two auxiliary
terminals are included as standard. Wire the solenoid
to auxiliary terminals, then connect power leads to the
opposite terminal side. Be sure to properly ground the
solenoid at the provided ground terminal.
WS UltraSwitch™ Series enclosures include two 1⁄2"
NPT conduit entries and the WM Series includes two
M20x1.5 conduit entries.
Internal and external grounding
Wiring diagram inside
Caution!
• Proper and suitable conduit plugs must be
installed in unused conduit entries before
putting the unit into service.
• Installation must be according to National
Electric Code, local codes, local certificates
and manufacturer's instructions in all cases.
Environmental seals must be used to protect
ingress of water through the conduits.
• Prevent electrostatic build-up for safe use. The
enclosure of the WS/WM Ultraswitch™ switch
box is made of PA6/PA66 and any impact or
friction caused by external objects should be
avoided to prevent electrostatic build-up.
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FCD PMENIM0010-04 - 10/21
Terminal strip