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SV2 Series Safety Shut-off Valves
160
32-00029—02
SOLENOID 1
PROOF OF CLOSURE
POC 1
POC 2
SOLENOID 2
MAINS
SUPPLY
L1 N
MAINS CHASSIS
GROUND
ILK ILK VPS POC MV2 MV1
OUT IN SW
CONTROL WIRING
RS-485
MODBUS
+
–
C
OFF
BIAS
TERMIN.
BIAS
ON
1
2
3
MODBUS
GND IN1 GND IN2
A
N
A
L
O
G
FIRE RATE O2 SENSOR
MOTOR
PRESSURE
FUEL/AIR
MCR35488A
Open
Closed
Self Test
Fault
LGP
HGP
Open
Closed
Reset
Fig. 144: NEMA 4 / IP66 STANDARD (6) electronics interface.
4.
On the back side of the valve:
a. Remove the solenoid cover retaining screw(s) with the appropriate tool to
access the SOLENOID 1/2 and CHASSIS GROUND wiring.
b. Between the solenoids remove the green chassis ground screw.
c. Remove the black solenoid connectors by pressing the tab & pulling down.
5.
If customer wiring is already in place, loosen any flex conduit connections and/or
lock nuts and mating cord grips.
a. You may need to remove wires from their connectors for the MAINS SUPPLY, MAINS
GROUND, CONTROL WIRING, RS-485 MODBUS and ANALOG.
b. Loosen the MOTOR cord grip and remove the connector from the electrical enclosure.
It will need to be relocated to the other side of the valve.
c. Make note of wire connections for each connector. Also reference the as-built electrical
drawings and/or the electrical drawings in the BURNER CONTROL INTERFACE
WIRING section of this manual.
6.
Loosen factory lock nuts and their mating cord grips (if applicable) for POC 1/2 factory wiring. Remove cord grips, nuts and
factory connectors from electrical enclosure.
NOTE: Leave the factory lock nuts and cord grips in place for the CHASSIS GROUND, SOLENOID 1/2 and PRESSURE
connections.
7.
Solenoids rotation procedure:
a. Loosen and remove the solenoid set screw, then remove the nut, retaining both.
b. Lift and rotate each solenoid outward towards the other side of the valve
(approximately 90 degrees).
c. Lower solenoid, making sure the notches line up and the solenoid is flush with
the valve bonnet.
d. Replace the nut on top of the solenoid post, hand tightening.
e. Replace the set screws, tightening to 4-5 Nm (35-45 in-lbf).
MCR37164
MCR37166
Open
Closed
Self Test
Fault
LGP
HGP
Open
Closed
Reset