Despatch LCC-16-3, LCC1-16-3 Installation Manual

C-195

P/N 156452

REVISION W

12/2007

STACKABLE LCC/LCD OVEN

INSTRUCTION MANUAL

Model Atmosphere Volts Amps

LCC/D1-16-3 Air 240 14.8 50/60 3,000 1

LCC/D1-16N-3

LCC/D1-51-3 Air 240 27.7 50/60 6,000 1

LCC/D1-51N-3

Model numbers may include a “V” for silicone free construction.
Model numbers may begin with the designation LL*1-*, indicating
Models without HEPA filter.

Nitrogen 240 14.0 50/60 3,000 1
Nitrogen 240 27.7 50/60 6,000 1

Hz Heater

Watts

Phase

Prepared by:
Despatch Industries
8860 207th St. West
Lakeville, MN 55044
Customer Service 800-473-7373

NOTICE

CAUTION

Users of this equipment must comply with operating procedures and training of
operation personnel as required by the Occupational Safety and Health Act (OSHA) of
1970, Section 6 and relevant safety standards, as well as other safety rules and
regulations of state and local governments. Refer to the relevant safety standards in
OSHA and National Fire Protection Association (NFPA), section 86 of 1990.

Setup and maintenance of the equipment should be performed by qualified personnel
who are experienced in handling all facets of this type of system. Improper setup and
operation of this equipment could cause an explosion that may result in equipment
damage, personal injury or possible death.

Dear Customer,
Thank you for choosing Despatch Industries. We appreciate the

opportunity to work with you and to meet your heat processing needs. We
believe that you have selected the finest equipment available in the heat
processing industry.

At Despatch, our service does not end after the purchase and delivery of
our equipment. For this reason we have created the Service Products
Division within Despatch. The Service Products Division features our
Response Center for customer service. The Response Center will direct
and track your service call to ensure satisfaction.

Whenever you need service or replacement parts, contact the Response
Center at 1-800-473-7373: FAX [phone].

Sincerely,
Despatch Industries

ii

iii

iv

v

instal

l

ing the oven.

PREFACE
This manual is your guide to the Despatch stackable LCC

ovens. It is organized to give you the information you
need quickly and easily.

The INTRODUCTION section provides an overview of the

NOTE: Read the entire
INTRODUCTION and
THEORY OF
OPERATION before

oven.
The OVEN OPERATION section details the function and operation of assemblies and

subassemblies on the oven.
The INSTRUCTIONS section provides directions on unpacking, installing, operating and

maintaining the oven.
An efficient way to learn about the oven would be to read the manual while working with

the corresponding oven control system. This will give you practical hands-on
experience with information in the manual and the oven.

Before operating the equipment, be sure you understand all
of the technical information contained in this manual.
Information skipped, not understood or misunderstood
could create the possibility of operating the equipment in an
unsafe manner. This can cause damage to the oven or
personnel or reduce the efficiency of the equipment.

WARNING: Failure to
heed warnings in this
instruction manual and
on the oven could
result in personal
injury, property
damage or death.

vi

Revision B (6-01): Various corrections
Revision C (11-01): Corrections, addition of schematic drawings
Revision D (1-02): Corrections, update of schematic drawings
Revision E (4-02): Update of schematic drawings, modified per Rev C Protocol Plus

software
Revision F (7-02): Corrections to Protocol Plus software description
Revision G (9-02): Miscellaneous corrections
Revision H (11-02): Modify operating procedure, update schematic drawings
Revision I (1-03): Update Despatch warranty pages
Revision J (5-03): Update of schematic drawings
Revision K (8-03): Update of schematic drawings
Revision L (11-03): Update to Protocol Plus Version 4.0.
Revision M (12-03): Add door lock manual override and Nitrogen needle valve

information
Revision N (2-04): Update of schematic drawings
Revision P (9-04): Update of schematic drawings
Revision Q (11-04): Update of schematic drawings
Revision R (3-05): Update of schematic drawings
Revision S (6-05): Update Declaration of Conformity
Revision T (12-05): Update Declaration of Conformity, add LLC notes
Revision U (8-06): Revised Protocol Plus numbers. Updated Despatch address.

Updated CE documents.
Revision V (11-07): Updated warranty
Revision W (12-07): Corrected Nitrogen Inlet connection from 3/8” to 1/4”.

vii

TABLE OF CONTENTS

INTRODUCTION.............................................................................................................1

Features ......................................................................................................................2

Options........................................................................................................................2

SPECIFICATIONS ..........................................................................................................3

Dimensions..................................................................................................................3

Capacities....................................................................................................................4

Power ..........................................................................................................................4

Temperature................................................................................................................5

INSTRUCTIONS .............................................................................................................6

Unpacking and Inspection ...........................................................................................6

Set-up..........................................................................................................................8

Wiring ........................................................................................................................16

HEPA Filter Installation..............................................................................................17

HEPA Filter Burn-off...............................................................................................18

OVEN OPERATION......................................................................................................21

Oven..........................................................................................................................21

System Control..........................................................................................................22

HEPA Filters..............................................................................................................24

HEPA Filter Validation Testing...............................................................................25

Filter Unit Replacement..........................................................................................26

HEPA Filter / Magnehelic Pressure Gauge............................................................28

OPERATING.................................................................................................................29

Loading the Oven ......................................................................................................29

Pre-Startup Checklist.................................................................................................30

Operating Procedure .................................................................................................31

Starting the Oven...................................................................................................31

Sequence of Operation (with Optional Beacon Light) ............................................31

Sequence of Operation for Inert Atmosphere Oven ...............................................32

Maintenance..............................................................................................................35

Checklist ................................................................................................................35

Lubrication .............................................................................................................35

CONTROL INSTRUCTIONS.........................................................................................36

Theory of Control Operation ......................................................................................36

Operating Modes....................................................................................................38

Setup Mode............................................................................................................38

Fast Start Mode......................................................................................................38

High Limit...............................................................................................................39

Indicators ...............................................................................................................39

Displays .................................................................................................................40

Key Functions ........................................................................................................40

Outputs ..................................................................................................................41

Relay (Continued)..................................................................................................42

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Communication......................................................................................................42

Optional Software...................................................................................................42

INSTRUCTIONS ...........................................................................................................43

Start-Up.....................................................................................................................43

Operation...................................................................................................................44

Manual Mode .........................................................................................................44

Timer Mode............................................................................................................45

Profile Mode...........................................................................................................46

Auto Start Mode.....................................................................................................46

Setup Mode............................................................................................................47

Instructions for Setup Mode Pages............................................................................48

Program Page (Defaults on Page 60) ...................................................................48

Sample Profile (Blank Program Table on Page 61)...............................................51

Auto Start Page (Optional, Defaults on Page 62)..................................................52

PID Page (Defaults on Page 62)...........................................................................54

Control Page (Defaults on Page 63) .....................................................................55

Communication Page (Optional, Defaults on Page 63).........................................56

Real Time Clock Page (Optional, Defaults on Page 64) .......................................56

Relay Outputs Page (Optional, Defaults on Page 64)...........................................57

Test Page (Defaults on Page 65)..........................................................................58

Zone Calibration Page (Defaults on Page 65).......................................................59

Sensor Calibration Page (Defaults on Page 65) ...................................................61

Enable Page (Defaults on Page 66)......................................................................63

Digital Inputs (optional) ..........................................................................................64

Error Messages and Alarms ......................................................................................65

Quick Reference and Default Values.........................................................................66

Technical Specifications ............................................................................................73

APPENDIX A: DRAWINGS...........................................................................................74

APPENDIX B: Temperature Scale Conversion and

Optional MRC5000 Setup ......................................................................................... 95

Temperature Scale Conversion (C/F)........................................................................95

Optional MRC5000 Recorder Setup..........................................................................96

ix

INTRODUCTION

The Stackable LCC/LCD series OVEN offers HEPA filtration for processes where
minimization of contamination is essential. The removable HEPA (High Efficiency
Particulate Air) filter is designed to provide a constant flow of 99.97% clean air to the
product being heated. The HEPA filter with silicone seal provides 99.99% filtration. A
magnehelic differential pressure gauge monitors pressure drop across the HEPA filter.

The oven’s operator interface components are located on the hinged control panel at
the front of the oven. Power components are located on the equipment panel, behind
the hinged control panel, for easy access. Electrical components are either touch-proof
or are shielded with Lexan to prevent accidental exposure during maintenance and
troubleshooting.

The LCC/LCD series design offers a stackable oven body. Multiple oven systems of
two or three oven stack options are available. When multiple ovens are operated, the
Despatch Protocol Plus controllers may be networked together with a Modbus
communication option. Optional Despatch Protocol Manager software is used to enable
customer PC control of multiple ovens.

The stackable units are available in air or nitrogen (noted with an N suffix)
atmosphere.
Model numbers that begin with the designation LL*1-* are without HEPA filter.

1

Features

• Despatch Protocol Plus microprocessor-based digital programmable control, with
simultaneous digital readout of both setpoint and actual temperatures.

• CE and SEMI S2 compliance, including yellow and red disconnect switch/EMO
mounted in the front control panel door.

• Manual reset high-limit control.

• Proportioning temperature control using solid state relays.

• 3 inches of insulation minimizes heat loss, external thermal spots and air

leakage.

• Stainless steel exterior and interior with all interior seams continuously welded on
the insulation side to protect the work chamber from contamination and to permit
chamber cleaning without damaging insulation.

• Horizontal airflow, which achieves air temperature uniformity of +/- 1% of
operating temperature.

• Recirculation motor is mounted at rear of oven, providing convenient access and
allowing up to three ovens to be stacked on top of one another, while still keeping
loading heights ergonomically acceptable.

• Electrical door lock switch prevents operator from opening chamber door when
cycle is in process. Door lock switch has manual override for authorized
maintenance personnel to release door in case of power failure.

• Oven door switch option

Options

• Beacon light option on control panel provides visual cycle process indication to
operator (red/amber/green)

• High-limit alarm/alarm silence switch option

• Recorder option

• Modbus RS422/485 communications option to Protocol Plus controller

2

SPECIFICATIONS

NOTE that this oven is not intended to process solvents or other volatile or

Model numbers that begin with the designation LL*1-* are without HEPA filter,
and have the same physical and power characteristics as the LCC/D ovens.

Dimensions

Model

LCC/D1-16-3 15
LCC/D1-16N-3 15
LCC/D1-51-3 23
LCC/D1-51N-3 23

flammable materials. The oven’s forced exhaust is intended for cooling
purposes ONLY.

Chamber Size,
inches (cm)
W D H

(38)
(38)
(58)
(58)

14
(36)
14
(36)
20
(51)
20
(51)

14
(36)
14
(36)
20
(51)
20
(51)

Capacity
Ft3
(liters)

1.6
(45)

1.6
(45)

5.1
(144)

5.1
(144)

Overall Size, inches
(cm)
W D H

32.5
(83)

32.5
(83)

40.5
(103)

40.5
(103)

35.5
(90)

35.5
(90)

42.5
(108)

42.5
(108)

20.75
(53)

20.75
(53)
27
(69)
27
(69)

Maximum
Number
of Shelves
5

5
8
8

3

Capacities

Model LCC/D1-16-3 LCC/D1-16N-3 LCC/D1-51-3 LCC/D1-51N-3
Maximum
Load (Lbs)
Maximum Shelf
Load (Lbs)
Recirculating
Fan CFM
H.P.
Net Lbs
Weight (KG)
(Approximate)
Shipping Lbs
Weight (KG)
(Approximate)
Exhaust
Capacity
(CFM)
(forced exhaust)
Exhaust Outlet
inches
(mm)

200 200 200 200

50 50 25 25

240

1/4

250

(114)

350

(159)

35

1.88 x 2.88

(48.0 x 73.4)

(48.0 x 73.4)

240

1/4

250

(114)

350

(159)

35

1.88 x 2.88

435

1/4

380

(172)

525

(238)

73

1.88 x 2.88

(48.0 x 73.4)

435

1/4

380

(172)

525

(238)

73

1.88 x 2.88

(48.0 x 73.4)

Power

If your line voltage is much lower than the oven voltage rating, heat up time is
significantly longer and motors may overload or run hot. If your line voltage is higher
than the nameplate rating, the motors may run hot and draw excessive amps. If the line
voltage varies more than 10% from the oven voltage rating, some electrical components
such as relays, temperature controls, etc. may operate erratically.

Model Volts * Amps Hertz Heater Phase KW Cord and Plug
LCC/D1-16-3 240 14.8 50/60 1 3 None, hardwired
LCC/D1-16N-3 240 14.0 50/60 1 3 None, hardwired
LCC/D1-51-3 240 27.7 50/60 1 6 None, hardwired
LCC/D1-51N-3 240 27.7 50/60 1 6 None, hardwired

*Oven designed for 240 volts (see nameplate on oven) will operate satisfactorily on a
minimum of 208 Volts, but will result in 25% reduced heater output. If your power
characteristic is lower, contact Despatch Industries.

4

Temperature

Model LCC/D1-16 LCC/D1-16N LCC/D1-51 LCC/D1-51N

Time to

Temperature

(approximate

minutes)

Cooling Time

to Temp

Minutes

(No Load)

(Note 2)

Temperature

Uniformity at

(Note 1)

40°C –

100°C

40°C –

200°C

40°C –

260°C

40°C –

350°C

100°C –

55°C

200°C –

55°C

260°C –

55°C

350°C –

55°C

100°C ± 1°C ± 1°C ±1°C ±1°C
200°C ±2°C ±2°C ±2°C ±2°C
260°C ±3°C ±3°C ±3°C ±3°C
350°C ±4°C ±4°C ±4°C ±4°C

7 7 5 5
30 30 27 27
45 45 35 35
60 60 50 50
35 30† 40 25†
65 55† 75 40†
75 60† 85 45†

130 80† 115 50†

LCC 260°C 260°C 260°C 260°C Maximum

Operating

Temperature

Operating

Range

w/20°C

Ambient

LCD 350°C 350°C 350°C 350°C

LCC 40°C-260°C

LCD 40°C-350°C

35°C-260°C

(Note 3)

40°C-350°C

(Note 3)

45°C- 260°C

40°C-350°C

35°C-260°C

(Note 3)

40°C-350°C

(Note 3)

Control Stability +/- 0.5°C +/-0.5°C +/- 0.5°C +/-0 .5°C

1. Uniformity figures are based on a nine-point test conducted in an empty oven with thermocouples
connected at 3” from walls, and after the oven temperature has reached stabilization. Uniformity
can vary slightly depending on unit and operating conditions.

2. Minimum operating temperatures and cooling times are based on a 20° C ambient temperature
measured at the fresh air inlet.

3.

Require water cooling to be activated for minimum temp rating and operation below 85°C.

†

Based on cooling water supplied at 2 GPM, 16°C for nitrogen atmosphere units.

5

INSTRUCTIONS

The INSTRUCTIONS section provides directions on unpacking, installation, operation
and maintenance of the Despatch Stackable LCC Series Ovens.

Unpacking and Inspection

Remove all packing materials and thoroughly inspect the oven for damage of any kind
that could have occurred during shipment.

• See whether the carton and plastic cover sheet inside carton are still in good
condition.

• Look at all outside surfaces and corners of the oven for scratches and dents.

• Check the oven controls and indicators for normal movement, bent shafts,

cracks, chips or missing parts such as knobs and lenses.

• Check the door and latch for smooth operation.

• Check the filter carton for damage.

If there is damage that could have happened during shipment follow these instructions:

1. Contact the shipper immediately and file a written damage claim.

2. Contact Despatch Industries to report your findings and to order replacement

parts for those that were damaged or missing. Please send a copy of your
filed damage claims to Despatch.

3. Check the packing list to make sure you have received all the specified

components of the oven system. If any items are missing, contact Despatch
Industries to have them forwarded to you.

4. Complete the warranty card and mail it to Despatch within 15 days after

receipt of the equipment.

6

LCC/LCD/LLC/LLD DOOR LOCK MANUAL OVERIDE

Requires ¼” multi-tip
driver handle. One
tip included per
oven. Note recess in
end of tip.

Separate, vendor
supplied device. One
device included per oven.

7

Set-up

1. Select the location for installing
your oven.

Single Oven Placement

Place the oven on a bench top or other framework capable of holding at least
250 pounds. The oven must have a minimum of three (3) inches in the rear to
provide proper ventilation. If possible, provide room at the sides and rear of the
oven for maintenance. The oven exhaust opening is at the rear of the left side of
the oven; allow at least two (2) inches clearance here as well. The oven may be
placed next to another cabinet on its right, or next to another oven, with three­quarters of an inch clearance (measure with door open).

Make sure the oven is level and plumb; this will assure proper heat distribution
and operation of all mechanical components.

Multiple Oven Placement

Up to three ovens may be stacked vertically, either with or without the optional
framework / base supplied by Despatch. NOTE: in the LCC1-51 model, only two
ovens may be stacked vertically. Make certain that the supporting surface is
capable of holding the weight of three ovens (750 pounds, not including support
framework) or weight of two ovens in the LCC1-51 models.

The holes in the rear oven feet may be used to bolt the ovens together by
removing the hole plugs in the top of the mating oven beneath.

2. (Nitrogen models only) Connect the nitrogen supply line to the inlet marked
nitrogen on the side of the oven. The nitrogen supply should run at 70 PSI but
not more than 80 PSI. Check for leaks.

3. (Nitrogen and Water Cooled Models) Install water connection for cooling coils to
the inlet marked "Water Inlet." Verify the valve on the flow meter is turned off
(fully clockwise). The water supply to the oven must not exceed 100 PSI. It is
recommended to install a regulator to prevent any surge. Check for leaks. Slowly
open the valve on the flowmeter and allow any air to bleed out. Failure to do this
will result in damage to the flowmeter. Repeat this procedure if water supply is
shut off. Adjust the flowmeter to 3 gpm (recommended amount of flow.

4. (Nitrogen Models only) Make the drain connection at the side of the oven. Note
there are two drain connections: water outlet and water drain (see photo on next
page). NOTE: The water outlet may be connected in a closed loop system, but
the water drain must be left in an open-to-atmosphere condition.

WARNING:
Do not use the oven in wet, corrosive or
explosive atmospheres unless this oven is
specifically designed for a special
atmosphere.

CAUTION: Design the drain system to prevent operator injury from high temperature
or pressure buildup. Piping must be able to withstand short periods of up to 500 °F
(260 °C) temperatures [662 °F (350 °C) for LCD ove ns]. Drain lines should be

8

insulated or warning labels installed stating that a hazard exists.

WARNING:
Never allow drain to be plugged as a hot oven will generate a small amount of steam
when the water is first turned on. Steam burns.

Nitrogen Flow Meter

Magnehelic Gauge, Flowmeters

9

LCC/LCD1-16 & 51-3 WITH WATER COOLING UTILITY CONNECTIONS

Nitrogen or Clean
Dry Air Inlet.
70 to 80 PSI (4.83 to

5.52 Bar).
Used to purge water
out of the coil prior to
heating the oven.
1/4” NPT female
brass connections
are provided.

During cooling cycle,
water flows through the
water coil and out this
connection.
3/8” NPT female brass
connections are
provided.
Piping must be rated for
up to 250 °F (121 °C)

At the end of a cooling
cycle, Nitrogen or Clean
Dry Air is purged
through the water coil.
Water and pressurized
nitrogen/air exit this
connection for 30
seconds. Must be
connected to gravity
style drain (no
backpressure).
3/8” NPT female brass
connections are
provided.
Piping must be rated for
up to 250 °F (121 °C)

Water Inlet for cooling.
3/8” NPT female brass
connections are
provided.

Requires 2 GPM flow at
61 °F (16 °C) to meet
published cooling rates.

MAXIMUM PRESSURE
100 PSI (6.89 Bar)

10

LCC/LCD1-16N & 51N-3 UTILITY CONNECTIONS

Nitrogen or Clean Dry Air
Inlet.
70 to 80 PSI (4.83 to 5.52
Bar).
Used for Nitrogen/Clean
Dry Air Purge and
Maintain Inlet and to
purge water out of the
coil prior to heating the
oven.
3/8” NPT female brass
connections are
provided.

During cooling cycle,
water flows through the
water coil and out this
connection.
3/8” NPT female brass
connections are
provided.
Piping must be rated for
up to 250 °F (121 °C)

At the end of a cooling
cycle, Nitrogen or Clean
Dry Air is purged
through the water coil.
Water and pressurized
nitrogen/air exit this
connection for 30
seconds. Must be
connected to gravity
style drain (no
backpressure).
3/8” NPT female brass
connections are
provided.
Piping must be rated for
up to 250 °F (121 °C)

Water Inlet for cooling.
3/8” NPT female brass
connections are
provided.

Requires 3 GPM flow at
61 °F (16 °C) to meet
published cooling rates.

MAXIMUM PRESSURE
100 PSI (6.89 Bar)

11

LCC/LCD/LLC/LLD1-16-3 AND LCC/LCD/LLC/LLD1-51-3 EXHAUST

Exhaust Stack Must Be Rated for These



TEMPERATURE:

LCD/LLD: 662 °F (350 °C)

(ALL SERIES)

Exhaust located on left side of oven, towards the

Conditions:

 SIZE: 1.88” x 2.88” (4.8 cm x 7.3 cm)
 FLOW: LCC/LCD/LLC/LLD1-16-3 (all series) =

35 CFM (1 CLM)

 FLOW: LCC/LCD/LLC/LLD1-51-3 (all series) =

73 CFM (2 CLM)

 TEMPERATURE: LCC/LLC: 500 °F (260 °C)

12

STACKABLE LCC-LCD-LLC POWER CONNECTION

FRONT SWING PANEL

to behind this panel

Power connection at
Disconnect Switch
on equipment panel
behind front swing
panel

DOOR LOCK

Ground Buss

FRONT EQUIPMENT MOUNTING PANEL

Panduit to protect
line wire between
conduit and
disconnect switch.

13

(CONTROL PANEL)

Conduit for power wires run from rear

FRONT SWING PANEL

(CONTROL PANEL)

½” conduit for
customer wiring from
rear compartment

Slot in
Chassis

14

FRESH AIR
INLET

REAR COMPARTMENT –
PANEL REMOVED

EXHAUST
FAN

Equipment

Conduit slot

REAR PANEL

15

Wiring

Front View of Wiring Conduit

NOTE that the oven must be directly
hardwired to the disconnect switch

WARNING:
All grounding and safety equipment must be
in compliance with applicable codes,
ordinances and accepted safe practices.

on the equipment panel. Please see
the picture for the wiring conduit (rear
and front). A conduit opening is provided at the rear of the oven. A conduit run is
provided from the rear oven equipment area to the front equipment panel, through
which line voltage power wiring can be connected to the disconnect switch labeled line
connection in the front of panel. Consult the electrical drawings included with the oven
for wiring details.

Inlet of line
voltage power

Load break switch
(line connection)

Rear View of Wiring Conduit

Outlet of line voltage
power (connect to the
main disconnect switch)

16

HEPA Filter Installation

Model numbers that begin with the designation LL*1-* are without HEPA filter.
If your oven is a LLC*-3 or LLD*-3, disregard instructions of the HEPA filter.

Technicians responsible for installing the filter should use caution. The filter is delicate
and must not be damaged during installation. Any filter unit dropped, whether or not in
the carton, should be examined for damage. Equally important, the filter unit must be
installed so that unfiltered air will not leak past the unit.

1. Remove the filter from the carton.
a. Place the carton on the floor. The floor must be clear of nuts, bolts, and

NOTE: Make certain that power is disconnected from the
oven before removing or replacing the HEPA filter.

similar protrusions, which would damage the face of the unit. Do not drop
or jar the carton.

NOTE: Repairing the damaged filter unit, particularly the medium, should not
be attempted by the user. Any unit so repaired must be retested to assure
that hidden damage does not exist which will reduce filtering efficiency.
Repair and retest is uneconomical for most users.

b. Tilt the carton on one corner. Be sure to handle the carton at opposing

corners.
c. Remove the sealing tape and fold the flaps of the carton back.
d. Gently upend the filter to place the exposed end of the filter on the floor.

Do not jar the filter.
e. Pull the carton from the filter unit. Do not pull the filter from the carton.

2. Inspect the filter. Use a strong lamp to examine the exposed areas of both faces
to assure that no breaks, cracks, or pinholes are evident. A flashlight, can be
used in a darkened room.

• Look for visible defects with the light projected along the full length of
each channel created by the separators. Translucent spots may not
necessarily indicate holes or cracks but may simply be variations in
thickness of the filter medium.

• Check that the adhesive seal around the filter unit faces are complete
and unbroken.

17

• Check the corner joints of the frame for adhesive sealing and
tightness.

• Check that the gaskets are cemented firmly to the filter frame and that
the gasket pieces are butted or mated at the joints.

3. Pull the shelf out from the oven and set it aside.
NOTE: Make certain that power is disconnected from the

oven before removing or replacing the HEPA filter.

4. Loosen the two screws at the upper and lower corners of the right rear of the

chamber. Pull out the shelf support/duct as a single unit and set it aside.

5. Note the position of the threaded rods behind the duct assembly on the right

side. The HEPA filter will be fitted over these rods.

6. Remove the brass nuts and washers from the rods that are temporarily locking

the rods to the oven wall. These nuts will be reused to hold the filter in place.
(LCC1-16 only: Remove filter frame to be reinstalled after filter.)

7. (LCC1-16 only:) Remove the HEPA filter (shipped separately) from its container.

NOTE: The seal side goes toward the wall of the oven. Place it inside the
chamber and install filter mounting frame over rods. Push filter tight to rear wall
with mounting frame.

(LCC1-51 only:) Remove the HEPA filter (shipped separately) from its container.
NOTE: The seal side goes toward the wall of the oven. Place it inside the
chamber and install filter mounting angles (shipped separately) over rods. Push
filter tight to rear wall with mounting angles.

8. Reinstall the washers and brass nuts to tighten the filter frame down. Tighten the

four nuts alternately for even tightness. Be careful not to over tighten. Correct
installation torque is 28 +/- 3 in-lbs. Be sure to compress the gasket evenly and
equally at all points with the filter frame completely covering the opening.

9. Reinstall the shelf support/duct assembly using the two screws removed earlier.

10. Reinstall the oven shelf.

HEPA Filter Burn-off

The burn-off process will take place in any piece of equipment where a new HEPA filter

18

is used at temperatures above 180°C / 356°F. There will be smoke, possibly a pungent
odor, and a light residue on interior surfaces. This is the result of oxidation of the
binder. Most of the binder will leave the filter after running at a temperature of
260°C/500°F for 48 (forty-eight) hours. Check the oven for particles or the exhaust for
smoke and odor to determine that the process is finished.

Select a location for this process where the smoke and odor generated will be ventilated
with the least amount of interruption and inconvenience. Ideally this will be in the final
location for the oven. However, it may be a receiving dock, some well ventilated space
or even outside if the weather is acceptable. If this location is a very clean area, then
special attention must be given to an exhaust hook-up that will capture the smoke and
odor. The post-cleaning (i.e. oven wipe down) may also generate dust, and care should
be taken if this is done in a clean room.

The following procedure is recommended:

1. Locate the equipment exhaust opening where chamber air is being expelled.

If the oven filter is burned off in a clean area, be sure to handle the equipment
exhaust appropriately. If the equipment is large and the exhaust stack is a
permanent service connection, it should be connected before the burn-off
process is run. If the equipment is small with no permanent exhaust duct
required, arrange a temporary connection out of the clean area that will handle
the maximum temperature of the equipment. Direct the smoke and odor outside,
or to a highly ventilated area.

2. Set the temperature control at the maximum process temperature.

• Silicone: Ramp at 1.25° C/min to 260° C and soak for 48 hours.

• Media Pack: Ramp at 1.25° C/min to 260° C and soa k for 48 hours.

• Termikfil: Ramp at 5° C/min to 350° C and soak for 48 hours.

3. Start the fan after making the electrical power connections.

4. Energize the equipment heater.

Use enough fresh air to remove the smoke, while still being able to achieve and
maintain the necessary temperature. The completion of the burn-off period
should be based on the particle level in the oven or smoke-free exhaust and
minimal odor level.

The filter hold-down nuts should be checked after burn-off and tightened again if
necessary. For best oven particle control, this step should be repeated on a
regular basis.

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NOTE:

If it is necessary to move the equipment after the burn-off process, considerable
care should be used. The binder which gives strength to new filters is now burned-off and
the media is very fragile. Rough handling of either the filter alone or the equipment with the
filter installed is not recommended as it may tear the media and lead to reduced filter
efficiency. Removal of the filter after heating can also result in damage to the frame seal,
and is only recommended when replacing the filter.

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OVEN OPERATION

Oven

The stackable LCC oven is a class 100 clean room oven with HEPA (High Efficiency
Particulate Air) filtration. This oven is ideal for processes where minimization of
contamination is essential.

Forced convected airflow provides rapid uniform distribution of heat. A HEPA (High
Efficiency Particulate Air) filter is mounted in a stainless steel frame in the
supply plenum. These filters are 99.97% effective in filtering 0.3 micron particles.

The cooling fan, is controlled on/off by an event relay in the Protocol Plus Control. The
cooling fan is used for rapid cool-down at the end of the process cycle, or to maintain
low temperature setpoints during process cycle. It may also be turned on at the start of
a process cycle to assure that starting temperature is less than 70° C.

The nitrogen models have stainless steel water coil which permits rapid cool down and
lower temperature operation. The nitrogen oven comes with an adjustable flowmeter a
for adjusting purge rate, and needle valve for setting maintain rate, separate solenoid
valves for purge and maintain operation and a pressure relief exhaust port. An exhaust
fan which powers on whenever the oven is running maintains consistent chamber
pressure control with varied exhaust stack conditions.

The oven has a type 304-2B stainless steel interior and a type 304-#4 stainless steel
interior. All interior seams are continuously welded on the insulation side. This protects
the work chamber from contaminated air and permits chamber washing without
damaging the insulation. Interior ductwork may be easily removed for cleaning. Heater
frame, fan wheel and motor shaft are constructed of stainless steel.

All controls are mounted on the front of the oven for easy operation and readability.
Two electropolished stainless steel wire shelves are provided. The shelves are
removable and adjustable on two inch centers.

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