Installation Manual

EPL-TSW-20A
CAUTION: Before installing, make sure you are compliant with area classifications, failure to do so may
result in bodily injury, death and property damage. Do not attempt installation until you are familiar
with the applicable Electrical Code.
Make sure that the circuit is De-energized before starting installation or maintenance. Verify that the
installation is grounded. Failure to ground will create electrical shock hazards, which can cause serious
injury and/or death.
IMPORTANT: Please read these instructions carefully before installing or maintaining this equipment.
Good electrical practices should be followed at all times and this data should be used as a guide only.
INSTALLATION
 Mount the back box by means of mounting lugs. Install conduit nipple and sealing fittings, to be
installed on each conduit entrance or exit to the enclosure back box in Class I and Class II areas.
Thread conduit into sealing fitting (Note: For Class I areas, the conduit should engage [5] full
threads.)
 The conduit threads should be lubricated with a non-electrical insulating lubricant or pipe joint
compound that will not promote corrosion or chemically attack aluminum.
 After conduit system has been properly installed, pull the wires and make electrical connections
as required. The electrical circuits and ground continuity should be checked with an instrument
approved for the area. Notice: Connect only copper wire to this device.
 All conduits entering or leaving the enclosure must be sealed within 18” of the enclosure with
listed sealing fittings.
 Caution must be taken during installation to be sure that the ground flange flame joints of the
cover and box are not scratched, nicked, or damaged. Before assembly of the cover to the box,
the mating ground surfaces of both the box and cover should be wiped clean to assure that the
ground flame joint will be free of all foreign particles such as lint, dust or dirt.
 After tightly bolting the cover assembly/assemblies to the enclosure, all box to cover flame
joints should be checked with a 0.0015” thick feeler gauge such that the gauge will not enter the
flame path more than 1/8” at any point.
MAINTENANCE
All moving shafts should be lubricated occasionally to prevent binding. Only use a lubricant which is
suitable for use with aluminum or stainless steel. If devices are to be installed in corrosive areas which
will attack aluminum alloys containing less than 0.4% copper (boxes and covers) and 303 stainless steel
(mostly shafts), the device should be suitably protected from the corrosive material.
CAUTION: To prevent ignition of hazardous atmospheres, disconnect from the supply circuits before
opening the enclosure; keep tightly closed while circuits are energized.