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Product Specification

Page 16 of 18

1303090MS01

LA-309 Controlled Atmosphere Infrared Furnace

April 15, 2009

17.0 DESCRIPTION OF OPTIONS

Table 17-1describes optional equipment available or included on the specified furnace. See section
3.3 for list of items included in the base bid and section 3.4 for those offered as options.

Table 17-1. Optional Equipment

KEY

DESCRIPTION

AFR Air

Filter/Trap/Regulator.

High volume air filter, moisture trap and pressure regulator to assure supply compressed

air is clean, dry and at the proper pressure before entering the furnace.

Option available on most furnaces.

CB-1 Circuit

Breaker.

Three phase circuit breaker.

Required for UL approval. Option available on most furnaces.

CDA-L CDA

Lockout.

Manual lockout for CDA supply line, 1724 kPa, 250 psi.

Option available on most furnaces.

CDA-S

CDA Auto Shutdown.

Automatically shuts off CDA supply after actual furnace Power OFF to reduce compressor

load and gas consumption. Includes timed delay to assure clearing of all process gas and emissions from furnace
chamber. Note: furnace control delays actual Power OFF until furnace cools to 100 C.

Option available on most

furnaces.

CXE15

Entrance Conveyor Extension.

Extends load station at the entrance of the furnace or dryer. Adds 0.381 m (15

inches) to length of furnace.

Option available on most furnaces.

CXX15

Exit Conveyor Extension.

Extends unload station at the exit of the furnace or dryer. Adds 0.381 m (15 inches) to

length of furnace.

Option available on most furnaces.

DCA

Additional Dryer Chamber.

Adds one heating chamber with lamp elements in the top row only. Adds 0.762 m (30

inches) to length of furnace.

Option available on most furnaces.

DSC 3-Phase

Safety

Disconnect:

On-board circuit breaker to meet local codes or customer requirements. Disconnects

furnace power distribution system (all on-board electrical components and wiring) from facility 3-phase power lines.
Lockable for safety.

Option available on most furnaces.

EH Edge

Heat:

Edge heat elements allow trim of the furnace for a precise and uniform temperature profile across the

belt width. EH serves to compensate for heat loss at the edges of the belt, through the chamber sides and through
the ends of the lamps that would otherwise cause a drop in temperature at the outer edges of the belt.

The power levels in the left and right edge heaters can be adjusted to vary the proportion of energy delivered by the
left and right elements. Each side can be varied from 0% to 100% power. When properly trimmed, typical
temperature deviations across the belt can be held to a minimum for profiles with modest temperature differences
between adjacent zones.

Standard on 24, 36 and 48 (nominal belt width, inches) model furnaces, option available on

most furnaces.

EM Element

Monitors:

Adds circuitry and special programming to sense and alert on failed heating lamps. Signals the

operator audibly and visually via the OI should a failure occur. The failure display indicates the failed lamp location,
allowing the operator to quickly discern location and process affected, if any.

Option available for most furnaces.

Recommended on furnaces with plenum covers (see

EMT

Entrance Emergency Machine Off, Top Mount.

Two (2) SEMI approved 40 mm diameter emergency shutoff

buttons located at the entrance on the horizontal surface of the furnace load area approximately 0.94 m (37 inches)
above grade, or on top of the furnace 1.5 m (64.5 inches) above grade, or at customer specified location.

No cost

option replaces

EME

, if specified at time of order

FCA

Additional Furnace Chamber.

Adds one heating chamber with lamp elements in the top and bottom rows. Adds

0.762 m (30 inches) to length of furnace.

Option available on most furnaces.

FZN

Furnace Control Zone.

Adds additional control zone in an existing furnace or dryer chamber. Additional zone is

integrated with the OI.

Standard on –X models. Option available on most furnaces.

HC Hermetic

Chamber.

Adds sealed lamp-end plenums, plumbing and flowmeters necessary to operate the furnace at

the lowest level of oxygen (O

) or moisture contamination from ambient air. During operation, process gas, under flow

meter control, is fed to the plenum boxes under pressure to prevent ambient air from entering the furnace chamber
through the lamp seals. Chamber gaseous contamination levels can be held typically to

≤

20 ppm.

This option, when utilized with nitrogen (N

) or forming gas (N

mix) process atmospheres prevents the oxidation of

metal surfaces during processing.

The option must be ordered before

OSS

options can be

included. Option available on most furnaces.

HO Hydrogen

Operation.

Electro-mechanical control of the atmosphere required for hydrogen (H

) operation with more

than 5% H

concentration. The H

cycle includes a nitrogen (N

) chamber purge and provides power to H

igniter coils

on exhaust stacks at the entrance and exit of the heating chamber. Included is fail-safe automatic N

purge, and

audio and visual alarms in the event of a failure of an igniter coil, or loss of N

or H

pressure. Includes special H

valve and controls enclosure with constant N

purge and H

detector. Also, includes additional H

detectors at furnace

entrance and exit. Control circuitry visibly indicates the gas or gases flowing to the process and all alarm conditions.
All curtain, eductor and cooling gas is N

Requires

OSS

and

options. Optional on some furnaces.