Dungs DMV-D/634 설치 지침 매뉴얼 - 페이지 7

{카테고리_이름} Dungs DMV-D/634에 대한 설치 지침 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Dungs DMV-D/634 9 페이지. Dual modular nema 4x safety shutoff valves with proof of closure

페이지 인쇄

Proof of Closure

Location

The proof of closure switch is factory installed; it visually and

electrically indicates valve position. When the valve is closed

(NO position) an orange light is visible, when the valve is open

(NC position) a green light is visible.

Conduit Connection

• Before connecting conduit to the proof of closure switch,

position the proof of closure switch so that there is no torque

from the wiring or conduit. If the switch needs to be rotated,

loosen the slotted set screw on the side. The switch may

be removed from the brass adapter for wiring, however,

DO NOT turn the proof of closure switch after tightening

the slotted set screw.

• Tighten the slotted set screw so that the proof of closure

switch housing is secure. (16 lb-in torque)

Wiring

• Do not exceed the electrical ratings given in the proof of

closure switch specifications.

• Use 14 or 16 gauge wire for at least 75 ˚C (167 ˚F).

• Connect wire to the appropriate terminal of the proof of

closure switch (see the wiring diagram). COM to the L1,

Ground to ground, NO to the Proof of Closure terminal of

the Flame Safeguard and N to L2. The ORANGE light shall

be on when the valve is closed, the GREEN light shall be

on when the valve is open (FM requirement).

Annual Testing

All wiring must comply with local electrical

codes, ordiances and regulations.

Do not wire the valve switch to close a circuit

that will directly power another safety shutoff

valve. Doing so could result in a safety valve being

energized and opened rather than remaining closed.

7 ... 9

1 Increment

Proof

Terminal

CPI 400

Made in Germany

Closed Position

Red Wire

Indicator

Yellow Wire

Orange

L1; COM

Green

Ground

• Perform a switch continuity test at least annually to verify

that the proof of closure switch is working properly.

• Make sure that there is no power to the proof of closure

switch.

• Shut the upstream ball valve to stop the flow of gas into the

valve train.

• With the valve de-energized, use a multimeter and verify

that there is continuity between the switch contacts 3 (COM)

and 2 (NO). Then verify that there is no continuity between

the switch contacts 3 (COM) and 1 (NC).

• Energize the valve that the proof of closure switch is mount-

ed to. Use a multimeter and verify that there is continuity

between the switch contacts 3 (COM) and 1 (NC). Then

verify that there is no continuity between the switch contacts

3 (COM) and 2 (NO).

• If you experience a problem, contact DUNGS.

• De-energize the valve and replace the cover on the proof

of closure switch.

• Open the upstream ball valve.

Proof of Closure Switch Specifications

Switch

SPDT

Switch Action

Valve open: Switch in NC position, Green light on.

Valve closed: Switch in NO position, Orange light on.

Contact Rating

10 A res, 8 FLA, 48 LRA @120 VAC

Enclosure

NEMA Type 4

Ambient/Fluid Temperature

-40 °F to 150 °F

Proof of closure switch

Orange Lamp

(valve closed)

Com

Green Lamp

(valve opened)

L2 (N)

Flame Safeguard

Proof of Closure

terminal