Chromalox ARC series, ARC-215, ARC-519, ARC-219, ARC-715 Installation Instructions And Renewal Parts Identification

Chromalox

®

DIVISION 4 SECTION

ARC

SALES

REFERENCE

DATE

SERVICE REFERENCE

Installation Instructions

and

RENEWAL PARTS IDENTIFICATION

PK411-8

161-562790-001

JULY, 2006

(Supersedes PK411-7)

© 2010 Chromalox, Inc.

Type ARC Thermal Cutout

Sensing Bulb

with 7’

Standard Capillary

Temperature Maximum

Range

Style

Dia. Length

A.C. Rating

Model

(˚F)

(In.) ±1/2”

(Amps)

ARC-215 60-250˚ 5 3/8 4
ARC-219 60-250˚ 9 3/16 16-1/8
ARC-515 200-550˚ 5 3/8 3-1/4
ARC-519 200-550˚ 9 3/16 11-1/4
ARC-715 300-700˚ 5 3/8 3-11/16

ARC-715D* 300-700˚ 5 3/8 3-11/16

30 Amp

120-277 Vac

Resistive Loads

Single Phase

250 VA

120-277 Vac

(Pilot Duty)

Specifications — Table A

Figure 1

* This model has 15’ capillary

4-3/32”

Length

Dia.

Bulb

(See Specifications — Table A)

2-21/32”

2” O.D.

Typ.Capillary

2-21/32”

3-1/8”

3-3/8”

5-7/8”

Flow Factor~ 216-765-4231

www.flowfactor.com

GENERAL

NOTICE: Type ARC Thermal Cutouts are designed for tempera­ture control service only. Because they do not fail safe, they should
not be used for temperature limiting duty.

The system designer is responsible for the safety
of this equipment and should install adequate
back-up controls and safety devices with their
electric heating equipment. Where the conse­quences of failure could result in personal injury or
property damage, back-up controls are essential.

Principle of Operation — Control action of these thermal cutouts
is provided through the principle of liquid volume change. With a
variation in temperature, the liquid in the sensing bulb expands or
contracts, causing a bellows to actuate the switching mechanism.

Enclosure — The control enclosure and cover assembly is of
heavy-gage electrical grade plastic.

Power Supply — CAUTION: Use on AC only. Thermostat
is not DC rated.

Control Range — The following temperature ranges are available:

Fahrenheit

60˚ to 250˚ 200˚ to 550˚ 300˚ to 700˚

Process Temperature Differential — May be minimized by:

1. Make sure control is mounted to vertical surface. (See Step 1,
MOUNTING section.)

2. Avoid excess heating capacity (oversized heaters).

3. Locate control sensing bulb in optimum position between heat

source and work.

Packing Glands — If a sealed or moisture resistant connection is
required at the point where the capillary enters the oven, tank, pipe
or similar equipment, an appropriate packing gland is available as an
optional part. (Catalog Numbers CCF-25A, CCF-25D or CCF-25E)

FIRE/EXPOSION HAZARD. This thermostat is not
intended for use in hazardous atmospheres where
flammable vapors, gases, liquids or other com­bustible atmospheres are present as defined in the
National Electrical Code.
Failure to comply can result in personal injury or
property damage.

MOUNTING

Note: Do not mount control where it will be subject to vibration,
shock, grease, dust, lint or corrosive vapors. Do not mount adja­cent to a large magnetic contactor, as vibration and shock will
cause thermal cutout to interact erratically — resulting in chatter­ing of the contactor.

The air temperature in and around the control enclosure should

be kept as near to normal room temperature as possible … never
above 150˚F.

1. Thermal cutout must be mounted

in a vertical position only.

2. Use sheet metal or wood screws

through the four 7/32” diameter
mounting holes in baseplate to
mount control. (See Figure 2.)

3. For controlling platen or die tem-

perature, insert entire sensing bulb
into drilled holes selected for snug
slip fit.

The longer, more sensitive Style 9
bulbs should be used for controlling
air temperatures or pipe line heating.

Note: If material in contact with bulb or
capillary is corrosive, a protective well
should be used. Protective wells are
available at extra cost. Check factory.

4. NOTICE —

A. Bending or deforming sensing bulb will alter control cali-

bration — requiring recalibration after installation. SEE
CALIBRATION section, page 3. If necessary, Style 9
bulbs can be coiled to 1” I.D. (See Figure 3.)

B. Do not kink capillary tube. The resulting constrictions in

fluid flow can destroy control function or broaden tempera­ture differential. Minimum capillary tube bending diameter
is 1/2” I.D. (See Figure 4.)

C. Any deformations of bulb or capillary that result in leakage

of fluid from control renders control inoperative.

D. Avoid passing control capillary tube through zones which

have temperatures in excess of controlled process temperature.
Erratic control or destruction of control function may result.

Figure 2

2-7/16”

Mounting Holes

3-7/8”

1”

Do Not
Bend or Kink
Crimped End

1/2”

Rod

Figure 3

(Sensing Bulb)

Figure 4

(Capillary Tube)

Flow Factor~ 216-765-4231

www.flowfactor.com