Larson Electronics EPS-10HP-3PST User manual

EPS-10HP-3PST – Explosion Proof 3-Pole Starter Switch
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com
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EPS-10HP-3PST OPERATION MANUAL
Explosion Proof 3-Pole Starter Switch
For use in Class I, Groups B, C & D, Type 3, 4 & 4X and Class II, Groups E, F & G, and Class III Hazardous
Locations, as defined by the Canadian Electrical Code and the National Electrical Code.
READ THIS SHEET CAREFULLY BEFORE BEGINNING INSTALLATION.
CAUTION: Before installing, make sure you are compliant with area classifications, failure to do so may result in bodily
injury, death and propertydamage. Do not attempt installation until you are familiar with the following procedures. All
installation must comply 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.
ENCLOSUREMOUNTINGINSTALLATION:
If you have received fully assembled enclosure with factory installed devices, there is no need to review the illustrations on
the following pages. Just follow the instructions and warnings bellow for installing and wiring the enclosure.
The mounting location must be flat and provide proper clearance, rigidity and strength to support the enclosure and all
containeddevices.
Securely fasten the enclosure to the mounting location. Install sealing fittings, cable glands, unions and/or conduit, using
an approved electrical conducting type lubricant on the threads. The conduit thread connections must be tapered pipe
thread conforming to ANSI B1.20.1. A minimum of (5) full threads engagement is required for all conduit connections.
Conduit sealing fittings must be installed within 18 inches of the enclosure. Sealing fittings must be approved for the
specific hazardous location where the enclosure is used. All unused conduit openings must be plugged using close-up
plugs. Plugs must be tightly installed with a minimum engagement of (5) full threads.
▲Inspect and clean the machined flange flame joint surfaces of both the cover and the box. Surfaces must be smooth,
free of nicks, scratches, dirt or any foreign particle build-up that would prevent a proper seal. Surfaces must seat fully
against each other to provide a proper explosion-proof joint. Clean surfaces by wiping with a clean, lint-free cloth.
Apply a light coating of lubricant to flange surfaces and close the cover. Tighten all cover bolts. Use only
those bolts
supplied with the enclosure. Check the bolted joint with a .0015 thick feeler gauge. The gauge must not enter the joint
more than 1/8” at any point. NOTE: Loose bolts or an improper joint can result in an explosion, creating a potential for
personal injury and property damage.
NOTE: If installing a breather and/or a drain, make certain they are suitable for the specific hazardous location where
they are to be used. Some drains/breathers maynot complywith Nema 3 & 4 standards. Also, provide a protective
covering to shield the breather and drain during hose-down operations.
IMPORTANT: This enclosure and device must be installed by trained, qualified and competent personnel. Installation
must comply with local, state and national regulations, as well as safety practices for this type of equipment.
WARNING:Electrical power must be OFF during installation, or performing anymaintenance. Disconnect primary power
source and lock out.

EPS-10HP-3PST – Explosion Proof 3-Pole Starter Switch
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com
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STARTER INSTALLATION GUIDE:
If you have ordered and received enclosure only and without any IEC devices, read and perform the following steps:
1.) Install the starter of your choice per the instructions accompanying the device and the attached “EPS-10HP-3PST
STARTER MOUNTING” illustrations shown on the following pages. By selecting the proper brand and series, the
illustration will guide in locating a set of specific blind holes to secure the din rail (and spacer if required) to the
back of the box, using supplied flat head fasteners. The numbers on the din rail corresponds to a mounting
location specific to each device and provide a visual guide in locating mounting holes in the box. Utilize supplied
spacer kit for mounting SQ’D / Telemecanique GV2 series starters.
2.) Snap the starter onto the din rail and install two (2) end-blocks on either side of it. DO NOT secure the end-
blocks yet.
3.) Align the device horizontally per measurements on page 5 & 6, using a scale or an accurate ruler with 1/32
graduation markings. Push both end-blocks against the starter. Using a small screw driver and the blocks’
recessed screws, permanently secure them to the din rail.
4.) The factory installed pushbutton operator in cover is set up to interface with the starter, once the cover was
installed on the box.
MAINTENANCEDATA
After installation, this enclosure should be inspected at regular intervals. A visual inspection should ascertain that all
cover bolts are still tight; that all conduit connections are intact and free of corrosion, and that the enclosure mounting
bolts are tight and in good condition.
If the enclosure must be opened for servicing, to check or replace internal devices and apparatus, the following
procedures should be followed:
Loosen cover bolts. Replace any corroded, bent or otherwise damaged bolts with new, factoryauthorized bolts obtained
from an authorized Larson Electronics distributor. Open enclosure. Do not use hammer, screwdriver or any prying tool to
open cover.
Inspect machined, flame joint flange surfaces. Surfaces must be smooth, free of nicks, scratches, dirt or any foreign
particle build-up that would prevent a proper seal. Should surface be damaged, contact factory. Never attempt to rework
surfaces by sanding, grinding, etc. Surfaces must seat fullyagainst each other to provide a proper explosion-proof joint.
Inspect water exclusion gasket. If gasket is damaged, do not attempt field replacement or repair. Contact a factory
authorized representative for a replacement cover. The damaged gasket can be removed from the cover, and the cover
without gasket can be used until a replacement is obtained. The cover, without gasket, can be safely used in Class I & II
hazardous (classified) locations, however, the enclosure maynot be rain-tight or hose-down resistant. Follow Installation
Instructions at ▲on Page 1.
WARNING: Before servicing the enclosure, be sure the electrical power is OFF. Disconnect the enclosure from
the primarypower source and lock-out.

EPS-10HP-3PST – Explosion Proof 3-Pole Starter Switch
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com
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EPS-10HP-3PST STARTER MOUNTING

EPS-10HP-3PST – Explosion Proof 3-Pole Starter Switch
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com
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EPS-10HP-3PST STARTER MOUNTING

EPS-10HP-3PST – Explosion Proof 3-Pole Starter Switch
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com
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EPS-10HP-3PST STARTER ALIGNMENT

EPS-10HP-3PST – Explosion Proof 3-Pole Starter Switch
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com
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EPS-10HP-3PST STARTER MOUNTING & ALIGNMENT

EPS-10HP-3PST – Explosion Proof 3-Pole Starter Switch
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com
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Technical information, advice and recommendations contained in these documents is based on information that Larson Electronics believes to be
reliable. All the information and advice contained in these documents is intended for use by persons having been trained and possessing the
requisite skill and know- how and to be used by such persons only at their own discretion and risk. The nature of these instructions is informative only
and does not cover all of the details, variations or combinations in which this equipment may be used, its storage, delivery, installation, check out, safe
operation and maintenance. There are no warranties, expressed or implied, except that all goods shall conform to their description, subject however to
commercial tolerances and variations. All sales are made on the express understanding that there are no express warranties other than those
contained in a specific agreement between Seller and Buyer and that there are no implied warranties that the goods shall be merchantable, nor are
there any warranties which extend beyond the description on the face hereof. In the event of the breach of any warranty or alleged breach of any
warranty by Larson Electronics, the Buyer shall not be entitled to consequential or incidental damages. The obligation of Larson Electronics under its
warranty shall be limited to repairing or replacing FOB Larson Electronics plant or allowing credit at Larson Electronics option, any part or parts which
may prove to be thus defective, provided the Buyer(s) gives Larson Electronics prompt notice of the defect or defects. It is expressly agreed and
understood that this remedy of repair or replacement or credit at Larson Electronics option is the exclusive remedy of the Buyer of this product. Since
conditions of use of the product are outside of the care, custody and control of Larson Electronics, the purchaser should determine the suitability of
the product for his intended use, and assumes all risk and liability whatsoever in connection therewith.
MAINTENANCE MANAGER: Please record the following information for your records:
COMPLETE CATALOG NO. (As shown on product label)
INSTALLED BY _________________________________________________________________________
DATE OF INSTALLATION _________________________________________________________________