System Sensor WFD Installation And Maintenance Instructions page 3

tem Sensor
is
not
responsible
tor
devices
that
have
been
Improperly
instaled.
tested, or maintained.
AAWARNING
High Voltage.
Electrocution
Hazard.
Do
not
handle
live
AC wiring
or
work
on a
device
io
which AC
power
is
applied.
Doing s0
may result
in
injury
or
death.
To remove a detector
When
utilizing
switches at
voliages greater
than 74VDC
- -
-
or
49VAC
means
to
provide
all-pole
disconnection must be
incorporaled in
the fixed
wiring,
such
as a
circuit breaker.
1.
Drain
the
pipe.
2.
Turn off
electrical
power
to the
detector
and
disconnect
the
wiring.
3.
Loosen
the
nuts and
remove the
U-bolts.
Genly
lift
the saddle
íar
enough
to
get
your fingers
under
it. Then,
roll
the
vane
so
it
will
tit
through
the
bole
while
continuing
to lift
the
water
flow detector saddle.
FIaURE 4. WFD WIRIN0
NOTE: COMMON AND B-NO
CONNECTiONS WILL CLOSE
WHEN VANE IS DEFLECTED, LE
WHEN WATER IS FLOWING. DUAL
SWITC NG
TO
BE
COMBINED
ON A SINGLE DETECTOR
SSM24-X
SSV120-X
5.
Lift
the detector
clear of the
pipe.
LISTED
COMPATIBLE
ACAUTION
f
a
vane
breaks
in
a
pipe,
find
and
remove
it.
If it
is
not removed,
the
vane
may
resuict
the
low
ol water
to all
or
part
of
the
sprinkler
system.
CONTROL PANEL
POWER
24VDC OR
120VDC
suGGESTED EOL
HESISTON
CONTACT RATINGS
125/250 VAC 10 AMPS
L24 VoG| 26 AMPS
INITIATING
LOOP FIGURE
SA. GROUND SCREW
LOCATION:
sCHEMATIC OF
INDIVIDUAL
IN
-GROUNND
SCREW
(GREEN)
SWTCH
C
"NO WATERFLOW
CONDITION
BREAK WIRE AS
SHOWN ON OF
SEON DO
NOT ALLOW
STRIPPED WIRE
LEADS TO EXTEND
BEYOND SWITCH
HOUSING. DO NOT
LOOP WIAES.
T
-MOUNTING
PLATE
J
FIGURE
SB. KNOCKOUT
PLUG
REMOVAL:
MECHANICAL DELAY ADJUSTMENT
The pneumatic delay is preset at the factory to 30 scconds. To adjust the set-
ting, turn the adjustment dial clockwise to increase the delay, counterclock
wise
to
decrease it. The
delay
is
adjustable
from
0
to
90
seconds. See Figure
6, page 4.
NOTE: Set the
delay
to
the minímum
required
to prevent false alarms from
flow surges.
Periodically test time delay as required by Authority Having Jurisdiction or
code authority.
OPERATIONAL TESTING
Always notifly
a
central station
monitoring waterflow
alarms before
repairing.
maintaining. or testing waterflow alarm devices.
1. Replace
the
cover
and
tighten the
tamper proof
screws
with
the
lamper
proof
wrench. Store
the wrench
in
a secure
place.
FIGURE 6. DELAY ADJUSTMENT DIAL:
2. Open
the
inspector's
test valve and time how
long
it takes for
the detec-
tor
to
indicate
a
low condition.
The
detector should
remain activated
un-
til
the
inspector's
test
valve
is closed.
Air pockets
in the
sprinkler
system
may increase the apparent delay.
DELAY
USTMENT
DIAL
ON
DIAL
IS
APPRO
o P R O X I M A T E
S E CONDS
E R
DELAY IN
U M
D I M E D E L MAINTENANCE
To
prevent accidental
water damage,
conirol
valves
should
be shut
tight and
the
system completely
drained
before
waterílow
detectors
are
removed
or re- placed.
Inspect
detectors
in
accordance
with
applicable
NEPA
codes
and
standards and/or
the
authority having
jurisdiction
for leaks
and
replace
if
a
leak
occurs.
Test
detectors
al least
quarterly,
as
described
under
Operational Testing.
to
ensure
proper operation.
Test
more
often
if
required
by the
authority
having
jurisdiction.
.
Under
nonal
conditions,
Xian
System
Sensor
waterilow
detectors
should
provide
years
of
truubie-íree
service.
However,
if
the
delay mechanis1n
or
switch
en-
closure
needs
to
be
replaced,
follow
these
directions.
To
replace
the
delay
mechanism
or
switch
enclosure,
use
a 3/16
socket
head
screwdriver
to
re-
move
the
three
screws that
hold
it
in
place.
Either
mechanism
can
be
easily
replaced
without
removing
the
detector from
the
pipe
or
draining
the
pipe.
10
replace
the
delay
mechanism1,
request
Part
No.
A3008-00.
For switch enclo
sure,
request
Part No.
A77-01-02.
Do
not repair
or replace
any
other
waterilow
detector
components.
I[
any
other
part of
the
detector
does
not
perform prop
erly, replace
the
entire
detector.
Installation
methods
other
than
those
listed
in
this
installation
manual
may
prevent
the
device
from
reporting
the
flow
ol
water
in
the
event
the
associated
sprinkler
system
is activated by
a
fire.
Sys*
45
J U L
NOTE: RETARD TIME MAY EXCEED 90 SECONDSADJUS
SE
NDS
ANOE APPROXMATE TIME DELAY IN
NUMBER ON OIALISA VOE 50o.
SECONDS WITH AN ACCURACY OF - 50%.
D770-01-0OC
156-0459-017C