Page 399 - Womens Pavilion

Appendix M

Wiring Diagram Pressure Switch Connection to a Master Alarm

Master
Module
l a Red
Source n g i Vacuum
Equipment S m
r
a
l
A
w
o
L
Green
(for Ground)
NO C
e l p wiring code
Blue r u P
Ground - Green
Common - Purple
Normally Closed -Red
Normally Open -Blue

not required

e
l
l
l
NO C B O P R B Y
u
o
e
w
r
e
r
u
o
r
a
d
Six Leads
n
p
w
l
18” Long (Approx.)
g
n
e
e
C NC C NO Green
(for Ground)
3/4” NPT Conduit
Connection
L
Circuit No. 1
H
i
o
Calibrated Dial
g
Gas
w

h

A
A
l
Circuit No. 2
l
a
a
r
Calibrated Dial
r
2
2
(OXY, AIR, N O, CO )
m

m

S
S
i
9/32” x 5/8”
i
g
g
Mounting
Nitrogen a l Hole (Typ.) 2 - 1/2”
n
n
a
l
1/4” NPT 3 - 1/2”
Gas Service
Connection
C NO NC C NO NC wiring code Circuit No. 1 Circuit No. 2
Switch for Switch for
High Alarm Low Alarm Circuit #1 for Low Circuit #2 for High
Common - Purple Common - Brown Red Blue Purple Brown Yellow
Normally Closed - Blue Normally Closed - Orange Orange
Normally Open - Red Normally Open - Yellow NO C C NC
Note: There are 2 NIT switches, one for high alarm and one for low alarm.
NOTE: There are 2 NIT switches, one for high alarm and one for low alarm.
50 Amico Pipeline