Janus FM-200 Sv Series - Low-Pressure Supervisory Switch Conduit Adapter; Electric Valve Actuator

Page: 16
FM-200® OPERATION, DESIGN, & SERVICE MANUAL
Revision F
Document # DOC102
Issued: February 1, 2009
Revised: 11-Nov-2011
40YE
Section 2 System Description and Components
2.2.2.3 Low-Pressure Supervisory Switch Conduit Adapter
P/N 99408 (See Figure 2.2.2.3a and 2.2.2.3b)
An optional conduit adapter is available for the low-pressure supervisory
switch to facilitate the attachment of rigid or exible conduit over the
switch leads. When implemented, the adapter shall be eld installed to
the body of the low-pressure supervisory switch and the fastening screw
secured until the conduit adapter ts snuggly around the low-pressure
supervisory switch body as illustrated in Figure 2.2.2.3b.
Figure 2.2.3 Electric Valve Actuator
1.620 in
41.15 mm
4.175 in
106.0 mm
Knurled Swivel
Nut
DIN Connector
with 1/2” (15 mm) Conduit Hub
with 36” (914 mm) leads
1/2" (15 mm)
Conduit
Connection
Fastening Screw
Figure 2.2.2.3a Low-Pressure
Supervisory Switch Conduit Adapter
Figure 2.2.2.3b Low-Pressure Supervisory Switch w/ Conduit Adapter (Sv Series Shown)
2.2.3 Electric Valve Actuator
P/N 18481 (See Figure 2.2.3)
e electric valve actuator attaches to the
primary cylinder at the valve actuation
connection and is utilized to automatically
open the cylinder valve upon receipt of a
signal from the control panel or other source.
It operates between 20.4 and 26.4 VDC and
consumes 500 mA (.5 Amps) at 24 VDC
nominal with a maximum supervisory current
of 30 mA (0.03 Amps).
e electric valve actuator body is steel
construction with a brass knurled swivel nut and
a stainless steel actuation pin that depresses the valve core when energized. It must be manually reset by pushing
the pin up until it snaps in the “up” position. e electric valve actuator is shipped with a plastic threaded cap on
its top port that should only be removed when installing the manual valve actuator.
Attaching the electric valve actuator to the cylinder valve when the actuation pin is not fully locked into the “up”
position may cause the cylinder valve to actuate, resulting in potential injury and/or property damage.
The conduit adapter fastening screw shall NOT be overtightened. Overtightening the fastening screw may cause
the body of the low-pressure supervisory switch to crack.
NOTE: Conduit Adapter must be ordered sepa-
rately from the low-pressure supervisory switch
and eld installed as shown here.