GENERAL INFORMATION Follow these steps to install the fixture · PDF fileany other part...

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GENERAL INFORMATION Larson Electronics explosion proof fixtures meet requirements of UL Standard 844 and 595 and CSA Standard C22.2. No. 137 regarding electric lighting fixtures for use in Class I, Division 1, Groups C and D and Class II, Division 1, Groups F and G hazardous areas and suitable for wet locations. Also listed as marine type electric fixture, outside type {salt water). For marine applications, installation must be in accordance with USCG 46 CFR parts 110 thru 113 NOTE: Refer to Tables 2 and 3 for operating classifications of specific wattages. MOUNTING AND WIRING This fixture is designed for wall or post mounting and requires a flat vertical surface 3 in. (76.0mm) wide by 40 in. (1016mm) high. The fixture is supplied with 72 in. (1830mm) of #16 gauge wire for connecting at the wall mounted switch or junction box through 1/2in. size flexible coupling. The wire entrance to the light head is factory sealed. Wiring must comply with Class I Division 1 (paragraph 501-4) and Class II Division 1 (paragraph 502-4) wiring methods defined in "National Electric Code 1984." Flexible coupling, junction box and any other part required to complete wiring aren't furnished with the fixture. These items may be purchased from a local electrical distributor. (Refer to Table 1 for a description of acceptable components) Follow these steps to install the fixture: 1. Locate fixture at desired height on wall or other permanent support Fasten wall mounting plate with four 3/8 in. (10mm) bolts. (These are not furnished.) See Figure 1. If it is necessary to mount light head as shown in the alternate mounting position, (a) remove the hardware identified in Item 30 "m the parts list; (b) rotate the head with attached bracket 90 degrees, and (c) reinsert hardware in Item 30 and tighten to obtain desired movement. 2 Locate power supply junction box or switch 28-3/4 in. (730mm) from the fixture arm as shown in Figure 1. It is important to place the power supply junction box in line with the fixture arm's axis of rotation in order to minimize the amount of bending to the flexible coupling. Proper installation will insure a minimum bend radius of 10 inches (254mm) on the flexible coupling. 3 Attach 45° elbow and Y* inch size close nipple to sealed fitting and tighten. The open end of the elbow must be directed at the fixture wall mount after tightening. 4 Assemble flexible coupling, two dose nipples, expansion union and junction box and route wiring a's shown in Figure 1. NOTE All threaded connections must engage five full threads. 5. Avoid placing fixture in a position that would (a) trap the flexible coupling; or (b) cause the flexible coupling to form less than a 10 inch {254mm) bending radius.

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GENERAL INFORMATION

Larson Electronics explosion proof fixtures meet requirements of UL

Standard 844 and 595 and CSA Standard C22.2. No. 137 regarding

electric lighting fixtures for use in Class I, Division 1, Groups C and

D and Class II, Division 1, Groups F and G hazardous areas and

suitable for wet locations. Also listed as marine type electric fixture,

outside type {salt water). For marine applications, installation must

be in accordance with USCG 46 CFR parts 110 thru 113

NOTE:

Refer to Tables 2 and 3 for operating

classifications of specific wattages.

MOUNTING AND WIRING

This fixture is designed for wall or post mounting and requires a flat

vertical surface 3 in. (76.0mm) wide by 40 in. (1016mm) high. The

fixture is supplied with 72 in. (1830mm) of #16 gauge wire for

connecting at the wall mounted switch or junction box through 1/2in.

size flexible coupling. The wire entrance to the light head is factory

sealed.

Wiring must comply with Class I Division 1 (paragraph 501-4) and

Class II Division 1 (paragraph 502-4) wiring methods defined in

"National Electric Code 1984." Flexible coupling, junction box and

any other part required to complete wiring aren't furnished with the

fixture. These items may be purchased from a local electrical

distributor. (Refer to Table 1 for a description of acceptable

components)

Follow these steps to install the fixture:

1. Locate fixture at desired height on wall or other

permanent support Fasten wall mounting plate with four

3/8 in. (10mm) bolts. (These are not furnished.) See

Figure 1. If it is necessary to mount light head as shown

in the alternate mounting position, (a) remove the

hardware identified in Item 30 "m the parts list; (b) rotate

the head with attached bracket 90 degrees, and (c)

reinsert hardware in Item 30 and tighten to obtain desired

movement.

2 Locate power supply junction box or switch 28-3/4 in.

(730mm) from the fixture arm as shown in Figure 1. It is

important to place the power supply junction box in line

with the fixture arm's axis of rotation in order to minimize

the amount of bending to the flexible coupling. Proper

installation will insure a minimum bend radius of 10

inches (254mm) on the flexible coupling.

3 Attach 45° elbow and Y* inch size close nipple to sealed

fitting and tighten. The open end of the elbow must be

directed at the fixture wall mount after tightening.

4 Assemble flexible coupling, two dose nipples, expansion

union and junction box and route wiring a's shown in

Figure 1.

NOTE

All threaded connections must engage

five full threads.

5. Avoid placing fixture in a position that would (a) trap the

flexible coupling; or (b) cause the flexible coupling to form

less than a 10 inch {254mm) bending radius.

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Figure 1

CAUTION

ALTERNATE MOUNTING

POSITION (Class 1 application only)

Mounting dimension from bottom surface of mounting Arm to

top outlet box must be held to maintain a minimum Bending

radius of 10 inches (254) on the flexible coupling.

NOTE

All threaded connections must engage at least five full

threads.

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All wiring should be done by licensed

electricians in accordance with state and

local codes plus NEC standards.

Improper installation may result in serious

injury.

Use only UL listed components suitable for Class I.

Division 1. Groups C and D and Class II, Division 1,

Groups F and G installation. They can be obtained

from a local distributor.

TABLE 1

Item in: Fig. 1

Acceptable Components - UL Listed for Wiring Fixtures in Item in Class 1, Division V Groups C and 0 and Class II. Division t.

Groups F and G Installations

A 1/2in size diameter flexible coupling. 36 in. (914mm) long with two removable close nipples

B 1/2m Size diameter male expansion union - standard length.

C 45' elbow for 1/2m size conduit.

D 1/2in close nipple

AIMING

Aiming along a horizontal plane (azimuth) is accomplished by

swinging the wall mounted arm through 180° to the desired

direction, and/or by rotating the fixture head through 230° to the

desired direction. The fixture head can be aimed vertically

through 74° of arc, 14° above and 60° below the horizontal.

NOTE : The fixture head movement is limited to

prevent bending the 1/2in. Size flexible coupling

beyond its recommended 10 in. (254mm) minimum

bending radius.

Disconnect power before relamping

REMOVAL OF COVER

To lamp or relamp, the cover must be unscrewed. In most

cases, a rectangular steel bar about 3/4 in. (19mm) x 1/2in.

(12.7mm) x approximately 30 in. (760mm) can be placed

between the lugs provided on the face of the cover and rotated

counter-clockwise to accomplish toe removal. See Figure2.

Excessive force must not be used as the bar may slip and cause

injury.

Handle lamp with care when removing and replacing. The lamps

are vacuum jacketed and may implode if broken. For safety,

wear safety glasses and gloves when removing and replacing a

lamp.

When relamping, clean the reflector and cover glass to maintain

efficiency. The glass may be cleaned with any non-abrasive

conventional glass cleaner The reflector should be cleaned with

a soft cloth using soapy water

Figure 2

CAUTION CAUTION

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REPLACEMENT OF COVER

Before replacing the cover, thoroughly dean the threads in both

the cover and shell (Item 1 in repair illustration) then lubricate

these threads liberally with a non-drying grease or petrolatum.

This will enable the cover to be turned more easily and will

facilitate its removal later for relamping.

Thread the cover onto the shell by hand until the cover contacts

the shell 0-ring. Use the rectangular steel bar

to rotate the cover another 1/12th to 1/10th of

a turn or between 2.5 in. (63mm) and 3 in.

(76mm) measured on the outside diameter.

ALTERNATE COVER REMOVAL

SPECIAL TOOL – WELDED CONSTRUCTION

Use of the rectangular bar may not be adequate if the cover

has tightened to the point of seizure. A more secure method of

removal, employing a strap wrench and a special holding tool,

is shown in Figure 4. For the wrench, we recommend RIDGID*

Model No. 5 (Cat No. 3136500) Strap Wrench with a 48 in.

(1200mm) strap, or an equal product The special tool, to hold

the shell while the cove is turned with the strap wrench, must

be fabricated. A suggested configuration is shown in Figure 4

Figure 3

Attach the special tool to the upper tapped boss on the shell

with a 3/8 in. (10mm) -16 x 1 in (25.4mm) capscrew. Apply the

strap wrench as shown. The cover then can be loosened and

removed by rotating it counter-clockwise with the strap

wrench, while holding the shell with the special tool.

Figure 4

COVER GLASS REPLACEMENT

If the Cover Glass (Item 13 in Repair Parts Illustration) is to be

replaced, first loosen the Retaining Ring (Item 12) by turning it

counterclockwise with a hammer and drift punch applied to the

lugs on the ring. Once loose, it may be rotated out by hand.

Remove the Cover Glass and Cover 0-Ring (Item 16} which

should also be replaced

Threads in the Cover, the Retaining Ring and the Shell should be

thoroughly cleaned and then lubricated liberally with a non-drying

grease or petrolatum to facilitate assembly and disassembly and

to inhibit corrosion After replacement of the Cover, 0-Ring and the

Cover Glass, the Retaining Ring must be tightened against the

glass with the hammer and the drift punch until the clearance

between the Cover Glass and the Cover is such that a .0015 in.

(.04mm) feeler will not enter the joint more than 1/8 in. (3.2mm) at

any point, as shown in Fig. 5.

FRICTION JOINT FEATURE

The Friction Joint (See Fig. 1) permits hand adjustment of the

light head. If the friction joint loosens, lighten the locknut part

of the joint to restore original tension. Do not lubricate the

friction joint

Figure 5

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REPAIR PARTS ILLUSTRATION

FOR INCANDESCENT FIXTURE

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TABLE 2

OPERATING CLASSIFICATIONS - High Pressure Sodium (HPS) Models

CLASS III

DLX-35N

DLX-50N

DLX-70N

DLX-70MH-N

1. Operate HPS fixtures ONLY with the proper lamp. (Seenameplate for lamp information).

2. In event of lamp failure, replace lamp or disconnectprimary power to ballast within two weeks at the verymost. Otherwise, permanent damage to electricalcomponents from dielectric stresses may result from (fiehigh voltage starting pulses unique to high pressuresodium circuits.

3. Use protective gloves and protective eye equipment whenreplacing lamps.

4. If outer glass of HPS lamp bulb is broken, turn off thefixture and replace the lamp promptly to avoid exposure toultraviolet energy. Even with lamp outer glass enclosurebroken, the arc tube may continue to fire, the arc tubescontain sodium. Use appropriate care in disposal of failedor broken lamps.

5. To avoid fire or explosion, maximum allowabletemperatures have been established for various classesand groups defined as hazardous zones. Table 2 lists theHID lamps and Table 3 the incandescent lamps that maybe safely used in the Class I and Class II zones withGroup C, D. F. or G materials.

6. To avoid fire or explosion, maximum allowabletemperatures have been established for various classesand groups defined as hazardous zones. Table 2 lists theHID lamps and Table 3 the incandescent lamps that maybe safely used in the Class I and Class II zones withGroup C, D, F, or G materials.

FIXTURE MODEL NO

CLEAR HID LAMP

ANSI CODE NO.

WATTS

PHONEX LAMP

NO

CLASS I

DIVISION 1

CLASS I DIVISION 1

MAX

AMBIENT

TEMP F/C °

GROUP MAX TEMP CODE F/C °

GROUP MAX TEMP CODE F/C°

DLX-150N S76 35 4212200 C & D T4A 248/1 20 F & G T3C 320/160

104/40

DLX-50N S66 50 4211300 C & D T4A 248/1 20 F & G TX 320/1 60

DLX-70N S62 70 4212600 C & D T4A 248/1 20 F & G T3C 320/1 60

DLX-100N 354 100 4212700 C & D T4A 248/1 20 F Only T3C 320/1 60

DLX-150N S55 150 4212800 C & D T3C 320/160 NOT RECOMMENDED 77/25

DLX-70-MH-N 70 422012 C & D 74 275/135 F & G 74275/135 104/40

CAUTION

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TABLE 3

OPERATING CLASSIFICATIONS- Incandescent (INC) Model

FIXTURE MODEL NO

120 COLT LAMP TYPE

WATTS PHONEX

LAMP NO

CLASS I DIVISION 1

CLASS I DIVISION 1

MAX AMBIENT TEMP F/C

° GROUP

MAX TEMP CODE F/C

°

GROUP MAX TEMP CODE F/C°

DLX-INCN

110R30/FL/RS 110 4212900 C & D T4A

360/180 F Only T3C 392/200

104/40

150 PAR/FL 150 4201100 C & D T4A

356/180 NOT RECOMENDED

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