Spectrasensors SS2000 - Figure 2-4: Type X Enclosure Purge Wiring

SS2000 Operator’s Manual
H
2
S in Natural Gas 2–9
10. Pull ground, neutral and hot wires for the EPCU power and separate
neutral and hot wires for the analyzer power to the EPCU housing.
11. Carefully feed all wiring through the 3/4” NPT conduit opening on the
EPCU housing.
12. Pull all wires up through the screw cover opening of the EPCU
housing. Trim wires approximately one (1”) to one and a half
(1 1/2”) inches beyond the housing threads.
13. Terminate all wiring to the appropriate point of the modular plug-in
terminals (see Figure 2–4 on page 2-9). Do not utilize jumpers
within the EPCU Housing nor attempt to terminate two wires to any
one point on the modular plug-in terminals.
An approved switch or circuit-breaker rated for 15 amps should
be used and clearly marked as the disconnecting device for the
analyzer.
NC C
NO
65432112
1
2
3
4
5
6
7
1
1
R
BK (SPARE)
SRM
6000
MAINTENANCE
PURGE OVERIDE
SWITCH
BK (SPARE)
R
BONDING JUMPER
R
Y
G (GROUND)
Y
Y
BK
BR (L2)
BK
BK
OR
W (SPARE)
W (SPARE)
OR
OR
BL
BL (L1)
BL
BL
2
2
3
3
4
4
5
5
6
7
G
G
G
L1
NC
L1
L1L2
BR
BL
P1P4 P2
P2
P1
L2
C
L2
G
NO
HARDWARE
BYPASS
SWITCH
EPCU
POWER
SOURCE
(220 V)
EPCU
POWER
INPUT
ALARM
RELAY
CONTACTS
ANALYZER
POWER
RELAYS
HARDWARE
BYPASS
INPUT
ANALYZER
POWER
SOURCE
(220 V)
ANALYZER
POWER
(220 V)
ALARM
SYSTEM
BK
R
W
BK
ISOLATED GROUND TERMINATIONS
W
R
RAPID
EXCHANGE
SOLENOID
VALVE
®
BASE MODULE TERMINATIONS
EPCU ENCLOSURE
ENCLOSURE
PROTECTION
VENT
EPV SENSOR
MODULE
ISB MODULE TERMINATIONS
Figure 2–4 Type X enclosure purge wiring.