Larson Electronics EPS-PB10-MS-SPDT User manual

EPS-PB10-MS-SPDT
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com 1of 2
10A Explosion Proof Push Button Momentary Switch
C1D1/C2D1 - 1P - Double Throw - NEMA
Instruction Manual
Thank you for your purchase of the Larson Electronics EPS-PB10-MS-SPDT.
WARNING:
READ CAREFULLY BEFORE INSTALLING FIXTURE. RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE.
CRITICAL SAFETY INSTRUCTIONS:
•INSTALLATION SHOULD ONLY BECONDUCTED BY A QUALIFIED ELECTRICIAN IN ACCORDANCE WITH NEC AND ANY
RELEVANT LOCAL BUILDING CODES.
•RISK OFFIRE OR ELECTRIC SHOCK. FIXTURE INSTALLATION REQUIRES KNOWLEDGE OF FIXTURE'S ELECTRICAL
SYSTEMS. IFNOTQUALIFIED, CONTACT A QUALIFIED ELECTRICIAN.
•BE CERTAIN ELECTRICAL POWER IS OFF BEFORE AND DURING INSTALLATION AND MAINTENANCE.
•MAKE SURE THE SUPPLY VOLTAGE IS THE SAME AS THE FIXTURE'S RATED VOLTAGE.
•TO PREVENT WIRING DAMAGE OR ABRASION, DO NOT EXPOSE WIRING TO EDGES OF SHEET METAL OR SHARP
OBJECTS. SUITABLE FOR DAMP LOCATIONS.
WARNING
TO AVOIDTHE RISKOF FIRE,EXPLOSION OR ELECTRIC SHOCK, THIS PRODUCT SHOULD BE INSTALLED,
INSPECTEDAND MAINTAINEDBY A QUALIFIED ELECTRICIANONLY, IN ACCORDANCEWITHALL
APPLICABLEELECTRICAL CODES.
TO AVOIDELECTRIC SHOCK:
•BE CERTAIN ELECTRICAL POWER IS OFF BEFORE AND DURING INSTALLATION AND MAINTENANCE.
•PRODUCT MUST BE CONNECTED TO A WIRING SYSTEM WITH AN EQUIPMENT-GROUNDING
CONDUCTOR.
TO AVOID EXPLOSION:
•MAKE SURE THE SUPPLY VOLTAGE IS WITHIN THE VOLTAGE RATING.
•ENSURE THE MARKED T RATING IS LESS THAN THE IGNITION TEMPERATURE OF THE HAZARDOUS
ATMOSPHERE.
•DO NOT OPERATE IN AMBIENT TEMPERATURES ABOVE THOSE INDICATED ON THE PRODUCT
NAMEPLATE.
•DO NOT OPERATE IF THE LENS, CORD, SEALS, HOUSING, RECEPTACLES, ETC. IS CRACKED OR
DAMAGED. IF SO, DISCONTINUE USE AND CONTACT MANUFACTURER FOR REPLACEMENT PARTS.
•ALL FASTENERS SHOULD BE PROPERLY SEATED.
The Larson Electronics EPS-PB10-MS-SPDT Explosion Proof Push Button Momentary Switch is ideal for controlling
motors and devices in hazardous locations. This 1-pole unit is equipped with a double throw configuration. Constructed of
malleable aluminum, the Class I, Division 1 & 2 and Class II, Division 1 & 2 rated switch features various hub size, contact
configuration and color (button) options.
WIRING
Standard pigtail(flying leads) wiring
We strongly encourage a licensed electrician install this product,in all locations especially in outdoor areas
where weatherproofing may be required. Universal voltage driver permits operation at 120V - 277V AC.
Warning: Check product label for correct input voltage!
Attach supply line wires to the appropriate light fixture wires as shown
in thediagram 
Secure each pair of wires according to the diagram. Utilize a junction box or
similar device and take precautionary steps for weatherproofing all
connections if installed in a location where water may come in contact with the
unit. Ensure the unit is properly grounded and that wiring is done according to
all local and national electrical/building codes.
Operators connect to the switch via an internal terminal strip. This unit is offered in dead end or feed thru configurations,
with 1/2" or 3/4" NPT hubs.

EPS-PB10-MS-SPDT
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com 2of 2
MOUNTING
The EPS-PB10-MS-SPDT is compatible with surface mounting applications.
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.
INSTALLATION
MAINTENANCE
There are no serviceable parts inside the fixture. However, itis good practice to routinely clean and check the
fixture for proper function.
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.
•Disconnect power running to the unit and be sure the fixture iscool to the touch.
•Use a non-abrasive cleaning solution to clean the fixture.
USE AND CARE
Unauthorized modification may impair the function and/or safety of this device and could affect the life of the equipment.
Always check for damaged or worn out parts before using the device. Store it in a secure place out of the reach of
children when not in use.Inspect for good working condition prior to storage and before re-use.
REPLACEMENT PARTS
The EPS-PB10-MS-SPDT is designed to provide years of reliable performance. Should the need for replacement parts
arise, please contact Larson Electronics.
THESE INSTRUCTIONS MAY NOT COVER ALL DETAILS OR VARIATIONS OF THIS PRODUCT FOR YOUR EQUIPMENT OR INSTALLATION REQUIREMENTS.
SHOULD FURTHER INFORMATION NOT COVERED BY THESE INSTRUCTIONS BE REQUIRED, PLEASE CONTACT LARSON ELECTRONICS BY EMAIL AT
[e-mail] OR BY PHONE AT 1-800-369-6671 FOR FURTHER ASSISTANCE.
PLEASE VISIT LARSONELECTRONICS.COM FOR WARRANTY AND RETURN INFORMATION.