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Doc# M8905 • REV R (May 2016) Page 3 of 8

CONDUIT

When aaching conduit, observe the following:

• Avoid long runs of unsupported conduit that can transfer unwanted impacts or vibra-

on of the conduit, rather than of the machine.

• Orient conduit such that accumulated moisture or condensaon does not drain into the

switch and consider the use of J-traps or other drain mechanisms.

• Units with NPT conduit holes (ordering opon E=1, 2, 3, and 7) have ¾” NPT threads.

Units with metric conduit holes (ordering opon E=4, 6, and 8) have M20 x 1.5 threads.

Refer to datasheet 1004461 for a complete list of ordering opons.

• Use proper conduit seals meeng the environmental requirement of the installaon to

prevent ingress of moisture and dust.

WIRING

• Remove the cover and wire the switch (es) into the alarm or shutdown circuit.

• Extra care should be taken to not damage the spring mounted on the underside of the

cover. Damage to this spring could prevent the switch from being reset.

• Do not exceed switch contact rangs listed on the cover.

• Observe all local electrical codes.

• All power must be switched o before opening of the enclosure in an explosive atmo-

sphere.

• The Vibraon Switch must be electrical connected by means of a ameproof/dust cable

gland or stopping box cered to:

IEC60079-0: 2011(EN60079-0:2012), IEC60079-1: 2007(EN60079-1:2007)

and IEC60079-31: 2008(EN60079-31:2009).

• For ambient temperatures below –10°C, use eld wiring suitable for the minimum

ambient temperature.

• Reinstall the cover by rst insuring the o-ring is in place and properly seated in the

grove in the housing. Place the cover on the unit and install the four cover screws.

Torque these screws to 6-7 /lbs.

NOTE: Route internal wiring away from the moving part of

the switch mechanism and secure so that it cannot move or

loosen over me. Wiring that impedes trip plate movement

may result in a switch that does not trip properly or at all.

NOTE: The disposable plasc plugs that ship in each

conduit hole provide only physical thread protecon

during shipping and handling. They are not

designed for use as permanent hole plugs and do

not provide adequate environmental protecon

for the switch when installed in the eld.

NOTE: Do not over-torque the bolts as this could

damage the housing and compromise the seal.

Metrix 5550 Installation Manual

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