Miscellaneous revisions and additions
including LCC/LCD1-52V & 1-51NV Oven
Door update and HEPA filter installation
update.
2 Version 1.1
Revision History
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
PREFACEStackable LCC/LCD Oven Owner’s Manual
4 Version 1.1
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Stackable LCC/LCD Oven Owner’s Manual PREFACE
Version 1.1 5
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
ABOUT THIS MANUALStackable LCC/LCD Oven Owner’s Manual
Values displayed on screens are examples only. Though
those values may be typical, contact Despatch Industries for
the final value.
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.
Danger!
Only fully-trained and qualified personnel should setup and
maintain this equipment. Improper setup and operation of
this equipment could cause an explosion that may result in
equipment damage, personal injury or possible death.
All rights reserved. No part of the contents of this manual may be reproduced, copied, or
transmitted in any form or by any means including graphic, electronic, or mechanical methods or
photocopying, recording, or information storage and retrieval systems without the written
permission of the publisher, unless it is for the purchaser's personal use.
Printed and bound in the United States of America.
The information in this manual is subject to change without notice and does not represent a
commitment on the part of Despatch Industries. Despatch Industries does not assume any
responsibility for any errors that may appear in this manual.
In no event will Despatch Industries be liable for technical or editorial omissions made herein,
nor for direct, indirect, special, incidental, or consequential damages resulting from the use or
defect of this manual.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Stackable LCC/LCD Oven Owner’s Manual ABOUT THIS MANUAL
Global Headquarters
Contact
Service & Technical
Support
Despatch Industries
8860 207th Street
Lakeville, MN 55044
USA
International/Main: 1-952-469-5424
US toll free: 1-888-337-7282
Fax: 1-952-469-4513
info@despatch.com
www.despatch.com
Service: 1-952-469-8230
US toll free: 1-800-473-7373
Service @despatch.com
Danger!
Failure to heed warnings in this instruction manual and on the
oven could result in personal injury, property damage or death.
Version 1.1 7
The information in this document is not intended to cover all possible conditions and situations
that might occur. The end user must exercise caution and common sense when installing or
maintaining Despatch Industries products. If any questions or problems arise, call Despatch
Industries at 1-888-DESPATCH or 1-952-469-5424.
1.2. Manufacturer & Service
The Stackable LCC/LCD Oven is manufactured by Despatch Industries.
Despatch has specialized in thermal processing for over 100 years. Technical expertise gained
over those years helps provide innovative solutions to critical applications in vertical markets and
cutting edge technology worldwide. Despatch products are backed by a drive for long-term
customer satisfaction and a strong sense of responsibility. The worldwide network of factorytrained Service Professionals is available to support your Despatch equipment. From full service
preventive maintenance to routine repair and certified calibration and uniformity, the Despatch
service network is positioned to respond to your business needs. Our service programs are
customized to meet your specific needs using our Advantage Service Assurance Program
(ASAP). For more information on ASAP, visit www.despatch.com.
1.3. Organization of this Manual
This owner’s manual contains the most comprehensive set of information for the Despatch
Stackable LCC ovens, including installation instructions, theory of operation, operating
instructions, among other things.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
ABOUT THIS MANUALStackable LCC/LCD Oven Owner’s Manual
This icon signifies important information.
This icon signifies information that describes an unsafe condition
that may result in death, serious injury, or damage to the
equipment.
Danger!
A condition that may result in death, serious injury, or damage to
equipment.
Warning!
A condition that may result in serious injury or damage to
equipment.
Caution!
A condition that may result in damage to equipment or product.
LOG OUT
Reversed-out, Bold, 10pt Arial typeface indicates a specific key or
button on screen to click.
Model
Number
L 1 - - 4
Position in
Number
1 2 3 4 5 6 7 8
Position in
Model Number
Letter / Number
Letter Meaning
2
C
Model has a HEPA filter
2
L
Model does not have a HEPA filter
3
C
Model operates at 260°C
3
D
Model operates at 350°C
5 & 6
16
1.6 cubic foot model
5 & 6
51
5.1 cubic foot model
7 & 8
N
Model uses a nitrogen atmosphere
7 & 8
V
Model uses Viton* synthetic rubber (Siliconefree option)
*
8 Version 1.1
1.4. Conventions
1.5. Specifications
1.5.1. Model Numbering and Naming Conventions
Table 1 lists the model numbers and follows these conventions:
Table 1. Model Number Key.
Example: LLD1-51NV-4
This 5.1 ft3 model does not have a HEPA filter, operates at 350°C, uses nitrogen and is siliconefree.
Trademark of E. I. Du Pont De Nemours & Company Corporation.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Stackable LCC/LCD Oven Owner’s Manual ABOUT THIS MANUAL
Models
Chamber Size
inches (cm)
Capacity
ft3 (liters)
Overall Size
inches (cm)
Maximum
number of
Shelves
W D H W D
H
LCC1-16-4
LCD1-16-4
LCC1-16N-4
LCD1-16N-4
15
(38)
14
(36)
14
(36)
1.6
(45)
32.5
(83)
35.5
(90)
20.75
(53)
5
LCC1-51-4
LCD1-51-4
LCC1-51N-4
LCD1-51N-4
23
(58)
20
(51)
20
(51)
5.1
(144)
40.5
(103)
42.5
(108)
27
(69)
8
The LCC/LCD oven is not intended to process solvents or
other volatile or flammable materials. Oven exhaust is
intended for cooling purposes only.
Model
LCC1-16-4 & LCD1-16-4
LCC1-16N-4 & LCD1-16N-4
LCC1-51-4 & LCD1-51-4
LCC1-51N-4 & LCD1-51N-4
Maximum Load (Lbs)
200
200
Maximum shelf load (Lbs)
50
25
Recirculating fan
(CFM)
240
435
(H.P.)
1/4
1/4
Net weight (Approximate)
(Lbs)
250
380
(KG)
114
172
Shipping weight (Approximate)
(Lbs)
350
525
(KG)
159
238
Exhaust capacity (forced
exhaust) (CFM)
35
73
Exhaust Outlet
(Inch)
1.88 x 2.88
1.88 x 2.88
(mm)
(48.0 x 73.4)
(48.0 x 73.4)
Version 1.1 9
1.5.2. Dimensions
*LLC & LLD models have same dimensions.
1.5.3. Capacities
1.5.4. Power
If the line voltage for your LCC/LCD Oven varies more than 10% from the oven voltage rating,
electrical components such as relays and temperature controls may operate erratically.
If the line voltage is lower than the oven voltage rating, heat-up time may be significantly
longer and motors may overload or run hot
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
ABOUT THIS MANUALStackable LCC/LCD Oven Owner’s Manual
Model
Volts *
Amps
Hertz
Heater Phase
KW
Cord and Plug
LCC1-16-4
LCD1-16-4
240
14.8
50/60
1
3
None, hardwired
LCC1-16N-4
LCD1-16N-4
240
14.0
50/60
1
3
None, hardwired
LCC1-51-4
LCD1-51-4
240
27.7
50/60
1
6
None, hardwired
LCC1-51N-4
LCD1-51N-4
240
27.7
50/60
1
6
None, hardwired
10 Version 1.1
If the line voltage is higher than the nameplate rating, motors may run hot and draw excessive
amperage
*The LCC/LCD Oven is designed for 240 volts (see oven nameplate) 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.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Stackable LCC/LCD Oven Owner’s Manual ABOUT THIS MANUAL
Model
LCC1-16-4
LCD1-16-4
LCC1-16N-4
LCD1-16N-4
LCC1-51-4
LCD1-51-4
LCC1-51N-4
LCD1-51N-4
Time to
Temperature
(approximate
minutes)
(no load)
40°C –
100°C
7 min.
7 min.
5 min.
5 min.
40°C –
200°C
30 min.
30 min.
27 min.
27 min.
40°C –
260°C
45 min.
45 min.
35 min.
35 min.
40°C –
350°C†
60 min.
60 min.
50 min.
50 min.
Cooling Time to
Temp
Minutes
(No Load)‡
100°C –
55°C
35 min.
30§ min.
40 min.
25§ min.
200°C –
55°C
65 min.
55§ min.
75 min.
40§ min.
260°C –
55°C
75 min.
60§ min.
85 min.
45§ min.
350°C –
55°C†
130 min.
80§ min.
115 min.
50§ min.
Temperature
Uniformity at**
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
Maximum
Operating
Temperature
LCC
260°C
260°C
260°C
260°C
LCD
350°C
350°C
350°C
350°C
Operating
Range w/20°C
Ambient
LCC
40°C-260°C
35°C-260°C††
45°C- 260°C
35°C-260°C††
LCD
40°C-350°C
40°C-350°C††
40°C-350°C
40°C-350°C††
Control Stability
+/- 0.5°C
+/- 0.5°C
+/- 0.5°C
+/- 0.5°C
†
‡
§
**
††
Version 1.1 11
1.5.5. Temperature
For LCD & LLD only, LCC & LLC maximum temperature: 260°C.
Minimum operating temperatures and cooling times are based on a 20°C ambient temperature measured at
the fresh air inlet.
Based on cooling water supplied at 2 GPM (7.6 LPM), 16°C for nitrogen atmosphere units.
Uniformity figures are based on a nine-point test conducted in an empty oven with thermocouples
connected at 3 inches (7.6 cm) from walls after the oven temperature has reached stabilization. Uniformity
can vary slightly depending on unit and operating conditions. Class 100 HEPA filtration will limit ramp
rates.
Requires water cooling be activated for minimum temp rating and operation below 85°C.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Electrical panels contain high voltage. Disconnect and lock out
the power supply before working inside any electrical panels.
Failure to lock out the power supply can result in death or injury.
12 Version 1.1
2. Safety
2.1. Safety Information
Do not work on the Stackable LCC/LCD Oven without reading and understanding this section
which contains important information and warnings. Ignoring these warnings can result in death,
serious injury or damage to the machine and product.
2.1.1. Lockout
Machine lockout places the Stackable LCC/LCD Oven into a zero energy state and prevents
accidental machine start up. Always follow the Lockout Procedure described in this Section
before cleaning, maintaining or repairing the Stackable LCC/LCD Oven. An accidental start-up,
while working on the Stackable LCC/LCD Oven, can result in serious injury or death.
2.1.1.1. Lockout Requirements
1. Every power source that can energize any element of the Stackable LCC/LCD Oven must be
shut off at the closest possible power source. This includes air, water and electricity,
including the Disconnect Switch.
2. After energy sources are locked out, test to ensure circuits are de-energized.
2.1.1.2. Lockout Procedure
Personnel authorized to lockout equipment must have the necessary locks to perform the lockout.
1. Physically disconnect all electrical power to the machine or lockout the appropriate breaker
or disconnects.
2. Close all valves and bleed off any pressure.
3. Test for power by attempting a start with the machine controls.
4. Identify the Lockout Condition with a tag on the electrical disconnect and pneumatic shut off
valve.
5. When work is complete, remove all tags and restore the machine to its working state.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Contact with energized electrical sources may result in serious
injury or death.
Danger!
Electrical panels contain high voltage. Disconnect and lock out
the power supply before working inside any electrical panels.
Failure to lock out the power supply can result in death or injury.
Version 1.1 13
2.1.2. Door and Panel
The door and rear panel on the Stackable LCC/LCD Oven protect against hazards. Power is
required to open the door and the oven heater is OFF when the door is open. Operation without
these safety devices in place creates hazards that the doors and covers are intended to render safe
for personnel.
The door requires a Manual Override Key for use when power is off. The door and panel that
require a tool to open are part of the safety system of the Stackable LCC/LCD Oven. Do not open
the door while the machine is running.
2.2. Maintenance
Only qualified and trained personnel should perform maintenance or repair.
2.3. Electrical Power
Only qualified and trained personnel should perform electrical maintenance or electrical repair.
Before performing maintenance, disconnect all electrical power from the machine. Use a
padlock and lockout all disconnects feeding power to the machine.
Never clean, or repair the oven when in operation.
Unauthorized alterations or modifications to Stackable LCC/LCD Oven are strictly forbidden.
Never modify any electrical circuits. Unauthorized modifications can impair the function and
safety of the Stackable LCC/LCD Oven.
2.4. Fire
Keep the Stackable LCC/LCD Oven clean and free of scrap materials, oil or solvents to prevent
the possibility of fire. In the event of fire, use a fire extinguisher as follows.
1. De-energize the machine immediately by turning OFF the DISCONNECT SWITCH.
2. Turn off the remote main disconnect (customer supplied disconnect).
3. Extinguish the fire.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Always disconnect all power before extinguishing a fire.
Attempting to extinguish a fire in a machine connected to
electrical power can result in serious injury or death!
14 Version 1.1
2.5. Equipment Lockout Requirements
To prevent injury or equipment damage during inspection or repair, the Stackable LCC/LCD
Oven must be locked out.
2.5.1. Emergency Stop
When a risk of personal injury or damage to the Stackable LCC/LCD Oven exists, turn OFF the
DISCONNECT SWITCH on the front of the oven. This shuts off all electrical power to the oven.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Stackable LCC/LCD Oven Owner’s Manual THEORY OF OPERATION
Danger!
Use care when working with nitrogen. Nitrogen presents an
asphyxiation hazard. Handle nitrogen according the safe
handling procedures listed in the material safety data sheet.
7
Figure 1. Stackable LCC/LCD Series Oven.
Version 1.1 15
3. Theory of Operation
3.1. The Stackable LCC/LCD Series Oven
The Stackable LCC/LCD Series Oven (Figure 1) offers
HEPA (High Efficiency Particulate Air) filtration for
processes where minimized contamination is essential. The
removable HEPA 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.
The oven operator interface is located on the hinged
control panel at the front of the oven (Figure 1). Power
components are located on the equipment panel, behind the
hinged control panel, for easy access (Figure 8). Electrical
components are either touch-proof or are shielded with
Lexan7 material to prevent accidental exposure during
maintenance and troubleshooting.
The cooling fan is controlled on/off by an event relay in
the Protocol 3 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
Trademark of SABIC Innovative Plastics.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
THEORY OF OPERATIONStackable LCC/LCD Oven Owner’s Manual
Stackable units are available in air or nitrogen atmosphere models.
Nitrogen atmosphere models are noted with an N suffix. Model
numbers beginning with “LL*1-*” do not use a HEPA filter.
Figure 2. Protocol 3 Operator Interface.
16 Version 1.1
ductwork may be easily removed for cleaning. Heater frame, fan wheel and motor shaft are
constructed of stainless steel.
Two electropolished stainless steel wire shelves are provided. The shelves are removable and
adjustable on two inch centers.
The LCC/LCD series design offers a stackable oven body. Multiple oven systems of two or three
oven stack options are available. When operating multiple ovens, network the Despatch Protocol
3 controllers together with a Modbus communication option. Use the optional Despatch Protocol
Manager software to enable customer PC control of multiple ovens.
3.2. The Protocol 3 Controller
The Protocol 3 is a microprocessor based digital temperature controller designed for simple and
flexible oven operation (Figure 2). The Protocol 3 controller operates as a dual-functioning
controller/high limit instrument. The control portion utilizes a time-proportioning voltage signal
to control heating devices with minimal temperature fluctuations.
The high limit portion protects the product and/or the oven from overheating. If the product being
processed has a critical high temperature limit, the high limit setpoint should be set to a
temperature somewhat below the temperature at which the product could be damaged. If the
product does not have a critical high temperature limit, the high limit setpoint should be set 5 to
15 degrees higher than the maximum programmed setpoint at which the oven will operate.
The Protocol 3 controller provides three primary operating modes:
Manual: Oven operates continuously at a fixed temperature until turned off.
Timer: Oven operates at a fixed temperature for a user-selected time period, and then
automatically turns off.
Profile: Temperatures
increase or decrease as
defined by 255 segments that
can be allocated to 64 ramp
and soak profiles. The
profiles can be linked to
provide additional
temperature combinations.
Review the Protocol 3 Controller
Owner’s Manual for more
information.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Stackable LCC/LCD Oven Owner’s Manual THEORY OF OPERATION
Each LCC/LCD oven uses one of two types of HEPA filters,
depending on the oven’s maximum temperature. Ovens that can
be heated to 260°C (500°F) use the Standard HEPA filter. Ovens
that can be heated to 350°C (662°F) use the High-Temperature
HEPA filter.
However, customers requiring a higher ramp rate while
operating equipment below 260°C (500°F) may still choose to use
the high-temperature HEPA filter:
LCC oven chamber temperature transitions must not exceed
1.5°C/minute to maintain class 100 chamber conditions. For ramp
rates greater than 1.5°C/minute and up to 5°C/minute, the LCD model
will maintain class 100 chamber conditions.
THIS SIDE UP
Figure 3. This Side Up Graphic.
Version 1.1 17
3.3. HEPA Filters
The Stackable LCC/LCD Ovens use HEPA (High Efficiency Particulate Air) filters limit
particulate size in thework chamber to 0.3 microns or less. Two different types of filters are
typically used. While both filters are high-temperature filters in that they are designed for use in
thermal processing equipment, the “standard” HEPA filter is rated to 260°C ( 500°F) while the
“high-temperature” HEPA filter is rated to 350°C (662°F).
3.3.1. Definitions
Binder: Organic substance used in filter construction to provide the media with structural
strength
Burn-Off: Process for eliminating the binder and D.O.P. contained in the filter from the
manufacturing and testing function.
D.O.P.: Dioctyl Phthalate - Aerosol particles of submicron size used in testing phase to spot
defects or measure filter efficiency.
HEPA: High Efficiency Particulate Air
Filter Packaging, Shipping and Handling
Packaging practice varies among the filter unit manufacturers. Filter
units are typically packaged in cardboard cartons with varying
approaches for strengthening the container and making it impactresistant. Shipping cartons are typically marked with a vertical arrow
and "This Side Up" (Figure 3). A filter unit is placed in the carton so
the pleated folds are vertical (running from top to bottom), versus
side to side.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
THEORY OF OPERATIONStackable LCC/LCD Oven Owner’s Manual
Caution!
Despatch does not recommend D.O.P. filter testing.
Ship, handle, store and install HEPA filters with pleats positioned
vertically. Horizontally-positioned pleats risk breaking at the adhesive
line of the filter medium. Horizontally-positioned pleats also collect
entrapped material on “shelves.” The accumulated weight of the
entrapped material may cause sag and lead to early failure of the filter
unit.
18 Version 1.1
The filter is typically shipped in the original carton or package provide by the filter manufacturer.
This carton or package provides good storage and maximum protection from dirt and moisture.
Store and move HEPA filters upright in the shipping carton. Minimize handling of the filter.
During installation, remove the filter from the shipping carton and install directly into the oven.
If an unpackaged HEPA filter unit must be placed with its face on the floor or other surface, clear
the surface entirely of every object or irregularity which might damage the filter pack.
3.3.2. HEPA Filter Validation Testing
Despatch Industries guarantees the HEPA filters will meet specified efficiency ratings when the
following recommendations are followed:
The filter is properly installed
The filter is run at or below 200°C, at a constant temperature
The filter is run before burn-in
3.3.2.1. D.O.P. Testing
D.O.P. testing uses aerosol particles of submicron size to spot defects or measure filter efficiency.
Degenerative by-products of this test are distributed throughout the oven chamber upon heat-up.
Despatch does not recommend D.O.P. filter testing.
3.3.2.2. Class 100 Testing
Despatch guarantees a Class 100 environment within the oven. This classification is based on
measurement of the particulate level within the oven work chamber.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Stackable LCC/LCD Oven Owner’s Manual THEORY OF OPERATION
Version 1.1 19
Class 100 testing may be performed before or after a proper filter burn-in procedure has been
performed. Despatch guarantees Class 100 condition measurements based on two methods of test.
The direct method employs an extraction-type particulate analyzer. The indirect method involves
particle settling over a specified period of time onto a clean disk.
3.3.2.3. Validation Testing
Despatch recommends the following test sequence for pharmaceutical Class 100 ovens.
1. Proper installation of the HEPA filters (Section 0).
2. Ambient air challenge to determine integrity of oven chamber and filter gaskets.
3. Proper filter burn-off procedure.
4. Class 100 testing inside the work chamber.
3.3.2.4. HEPA Filter Burn-off Process Not Necessary
HEPA filters contain a binder material which protects the filter media during production and
shipping. Smoke produced from burning this binder at elevated temperatures is undesirable
during normal oven operation. Burning off the binder will ensure a clean process at elevated
temperatures.
However, when the binder is burned out of the filter media, the filter becomes very
fragile: too fragile to withstand normal shipping and handling. For this reason, Despatch does not
perform the burn-off procedure. The burn-off process is not necessary at temperatures under
200°C.
3.3.3. HEPA Filter Unit Replacement
Periodic replacement the HEPA filter unit due to:
Resistance, or pressure drop, across the filter unit. Maximum level of resistance in inches
(water gauge) will vary depending upon the operation of the filter and the available fan
capacity. Adequate fan capacity must be available.
Loss of efficiency (leakage), determined from air-sampling measurements made downstream
of the filter unit.
Visible damage or rupture of the filter media in a unit.
Change in process application.
Excessive build-up of lint or combustible particulate matter on the filter unit.
Water droplets in airstream through filter, free water (RH = 100%), will saturate filter very
quickly and may cause burnout or holes in burned off filter media.
High level of radiation in the vicinity of the filter unit.
3.3.4. HEPA Filter: Magnehelic Pressure Gauge
The LCC Series oven is equipped with a Magnehelic pressure gauge which measures the pressure
in front of the HEPA filter (Figure 4). As the filter becomes dirty, pressure increases. Despatch
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
THEORY OF OPERATIONStackable LCC/LCD Oven Owner’s Manual
A B C D E
F
Date
Comments
Pressure
(inches of
water)8
Pressure with:
150 SCFH (LCC1-
16); 200 SCFH
(LCC1-51) nitrogen
purge9
Pressure with:
75 SCFH (LCC1-
16); 150 SCFH
(LCC1-51) nitrogen
maintain9
Oven
Temperature
Typical
Values
2-3”
1.5-2” above value
in Column C
0.5-1” above value
in Column C
60°C
Filter first
installed
8
9
Figure 4. Magnehelic Pressure
Gauge Measures Pressure in front of
the HEPA filter.
20 Version 1.1
recommends changing the filter when the pressure is 1” w.c. greater than when the filter was first
installed (Refer to section 4.3 for filter replacement).
Since pressure can be affected by many factors involved in the
installation, it is important to record the pressure of a new filter as
a baseline. Recorded pressure readings allow for new readings to
be periodically checked against this baseline. Use Table 2 for
recording this information (See Section 8.1 for a blank
worksheet).
For a nitrogen atmosphere oven, pressure readings also give an
indication of the integrity of the seals. If the pressure recorded in
Columns D or E decrease over time, inspect the oven seals.
Table 2. HEPA Filter Pressure Reading Worksheet.
With Purge and Maintain valves off for a nitrogen atmosphere oven. Cooling fan off for an air
atmosphere oven.
For a nitrogen atmosphere oven only.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
The LCC door requires a Manual Override Key for use when
power is OFF. The door and panel that require a tool to open are
part of the safety system of the Stackable LCC/LCD Oven. Do
not attempt to permanently mount the Manual Override Key.
Do not remove torx screw from door release mechanism. Manual
Override Key cannot be permanently mounted.
Figure 5. Door Lock Manual Override Key (LCC/LCD/LLC/LLD).
Version 1.1 21
4. Assembly & Setup
Assembly and Setup provides directions for unpacking and installing your LCC/LCD.
4.1. Unpack & Inspect The LCC/LCD Oven
Remove all packing materials and thoroughly inspect the oven for any damage that might have
occurred during shipment.
Note whether the carton and plastic cover sheet inside carton are still in good condition
Observe all outside surfaces and corners of the oven for scratches and dents
Check 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 (Figure 5)
Check the filter carton for damage
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Do not use the oven in wet, corrosive or explosive atmospheres
unless this oven is specifically designed for a special
atmosphere.
22 Version 1.1
4.1.1. If Damaged During Shipping
If damage occurred during shipping:
1. Contact the shipper immediately and file a written damage claim.
2. Contact Despatch Industries (1-800-473-7373 or 1-952-469-8230 or service@despatch.com)
to report your findings and to order replacement parts for those damaged or missing. Send a
copy of your filed damage claims to Despatch industries (Despatch Industries, 8860 207th
Street, Lakeville, MN 555044, USA).
3. Check the packing list to ensure you received all the specified components of the oven
system. If any items are missing, contact Despatch Industries to have missing products
forwarded to you.
4. Complete the warranty card and mail it to Despatch within 15 days after receipt of the
equipment.
4.2. Set-up The LCC/LCD Oven
4.2.1. Select Oven Location
4.2.1.1. Single Oven Placement Requirements
Bench top (or other framework) capable of holding at least 250 Lbs (113.4 Kgs).
A minimum of three (3) inches (7.6 cm) available in the rear of the oven for proper
ventilation.
Leave room at the oven sides and rear for maintenance.
Oven exhaust opening is at the rear of the left side of the oven. Allow at least two (2) inches
(5.1 cm) clearance here as well. The oven may be placed next to another cabinet on its right,
or next to another oven, with three-quarters of an inch (19 mm) clearance (measure with door
open).
Plumb and level the oven to assure proper heat distribution and operation of all mechanical
components.
4.2.1.2. Multiple Oven Placement Requirement
Stack up to three ovens vertically, with or without the optional framework (base) supplied by
Despatch.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
For the LCC1-51 oven model, only two ovens may be stacked
vertically.
Connection
(Figure 6)
LCC/LCD Air Atmosphere with
optional Water-Cooled Models
LCC/LCD Nitrogen Atmosphere
Models with standard water-cooling
NITROGEN
INLET
Clean Dry Air Inlet (70-80 psi
(4.83-5.52 bar))
Purge water from coil prior to
heating oven
¼” NPT female brass
connections provided
Nitrogen Inlet (70-80 psi (4.83-5.52
bar))
Purge nitrogen, clean dry air and
water from coil prior to heating the
oven
1/4” NPT female brass connections
provided.
WATER
OUTLET
During cooling cycle, water flows through the water coil and out this
connection
3/8” NPT female brass connections provided
Piping must be rated for up to 250 °F (121°C)
WATER
DRAIN
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
Water Inlet for cooling
3/8” NPT female brass
connections provided
Requires 2 GPM flow at 61 °F
(16°C) to meet published cooling
rates.
Maximum Pressure 100 PSI
(6.89 Bar)
Water Inlet for cooling
3/8” NPT female brass connections
provided
Requires 3 GPM flow at 61 °F
(16°C) to meet published cooling
rates.
Maximum Pressure 100 PSI (6.89
Bar)
Version 1.1 23
Supporting surface must be capable of holding three ovens (750 Lbs or 340.2 Kg) or the
weight of two LCC1-51 oven models.
Use the holes in the rear oven feet to bolt the ovens together by removing the hole plugs in
the top of the mating oven beneath.
4.2.2. Oven Utility Connections
Utility connections vary slightly on different LCC/LCD models. Table 3 lists the connection
purposes and parameters. Refer to Figure 6 for visual reference.
Table 3. Oven Utility Connections.
4.2.2.1. Nitrogen With Water-Cooled Models
1.Connect nitrogen supply line to NITROGEN INLET at the connections panel (Figure 6).
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Water pressure supplied to the oven must not exceed 100 psi
(6.89 bar). Despatch recommends installing a regulator to
prevent surging.
Caution!
Failure to allow air to bleed from the flowmeter may damage the
flowmeter. Bleed air from the flowmeter after every instance of
shutting off the water supply.
Nitrogen pressure supplied should be greater the 70 psi (4.83 bar) but
not more than 80 psi (5.52 bar).
Figure 6. LCC/LCD Connections Panel.
24 Version 1.1
2. Install water connection for cooling coils to WATER INLET (Figure 6). Verify the valve on the
flowmeter is turned OFF, that is, fully clockwise.
3. Check for leaks by slowly opening the valve on the flowmeter and allowing any air to bleed
out.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
WATER DRAIN must be left open-to-atmosphere. Make closedloop connections using WATER OUTLET (Figure 6).
Warning!
Never allow WATER DRAIN to be plugged. A hot oven generates
a small amount of steam when the water is first turned on.
Steam can burn skin.
Caution!
Design the drain system to prevent operator injury from high
temperature or pressure buildup. Piping must withstand short
periods of up to 500 °F (260°C) temperatures (662 °F (350°C) for
LCD ovens). Insulate drain lines or install warning labels stating
the potential high temperature or pressure hazard.
Clean Dry Air pressure supplied should be at 100 psi (6.9 bar).
Water pressure supplied to the oven must not exceed 100 psi
(6.9 bar). Despatch recommends installing a regulator to prevent
surging.
Version 1.1 25
4. Adjust the flowmeter to the recommended 3 gpm (11.4 lpm).
5. Complete the drain connection on oven side by connecting WATER OUTLET to the closed loop
system (Figure 6).
4.2.2.2. Air Atmosphere with Optional Water Cooling Model
1. Connect Clean Dry Air (CDA) line to DRY AIR 100 PSI at the connections panel (Figure 6).
2. Install water connection for cooling coils to WATER INLET (Figure 6). Verify the valve on the
flowmeter is turned OFF, that is, fully clockwise.
3. Check for leaks by slowly opening the valve on the flowmeter and allowing any air to bleed
out.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Failure to allow air to bleed from the flowmeter may damage the
flowmeter. Bleed air from the flowmeter after every instance of
shutting off the water supply.
WATER DRAIN must be left open-to-atmosphere. Make closedloop connections using WATER OUTLET (Figure 6).
Warning!
Never allow WATER DRAIN to be plugged. A hot oven generates
a small amount of steam when the water is first turned on.
Steam can burn skin.
Caution!
Design the drain system to prevent operator injury from high
temperature or pressure buildup. Piping must withstand short
periods of up to 500 °F (260°C) temperatures (LCD ovens: 662 °F
(350°C). Insulate drain lines or install warning labels stating the
potential high temperature or pressure hazard.
26 Version 1.1
4. Adjust the flowmeter to the recommended 3 gpm (11.4 lpm).
5. Complete the drain connection on oven side by connecting WATER OUTLET to the closed loop
system (Figure 6).
4.2.3. Exhaust Connections
The LCC/LCD Exhaust port is located on the left side of the oven (Figure 7). Table 4 lists the
requirements for the exhaust stack for the LCC/LCD Oven.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
The oven must be hardwired directly to the disconnect switch on
the equipment panel (Figure 9).
Danger!
All grounding and safety equipment must be in compliance with
applicable codes, ordinances and accepted safe practices.
Figure 7. Exhaust Port on the Left Side of the LCC/LCD Oven.
Version 1.1 27
Table 4. Exhaust Connection Requirements.
4.2.4. Wiring & Power Connections
Run line voltage power through the conduit from rear of oven to front (Figure 9). Consult
electrical drawings included with the oven for details.
Access the conduit and Disconnect Switch by opening the front panel (Figure 8).
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Line voltage power
emerges from conduit on
Route line voltage power
through conduit
Figure 9. Conduit entrance at rear of oven and open front panel.
Figure 8. Open the front panel for access.
28 Version 1.1
Connect the line voltage power to the disconnect switch labeled LINE CONNECTION (Figure
9).
power to Disconnect
Switch labeled LINE
front of oven here.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Each LCC/LCD oven uses one of two types of HEPA filters,
depending on the oven’s maximum temperature. Ovens that can
be heated to 260°C (500°F) use the Standard HEPA filter. Ovens
that can be heated to 350°C (662°F) use the High-Temperature
HEPA filter.
However, customers requiring a higher ramp rate while
operating equipment below 260°C (500°F) may still choose to
use the high-temperature HEPA filter:
Make certain power is disconnected from the oven before
removing or replacing the HEPA filter. Observe all applicable
safety procedures.
Caution!
The HEPA filter is fragile and care must be taken to avoid
damage during installation. If a filter unit is dropped, whether in
the carton or not, examine it carefully for damage.
Caution!
The HEPA filter must be installed so that unfiltered air cannot
leak past the unit.
Refer to installation instructions provided by filter manufacturer
for additional details..
Version 1.1 29
4.3. HEPA Filter Installation
Not all LCC/LCD ovens come equipped with a HEPA filter. This HEPA filter installation section
applies only to ovens designed for ISO Class 5 (Class 100) use, which are equipped with a HEPA
filter. For a complete explanation of model numbers, refer to Section 1.5.1.
Two different types of filters are typically used. While both filters are high-temperature filters in
that they are designed for use in thermal processing equipment, the “standard” HEPA filter is
rated to 260°C (500°F) while the “high-temperature” HEPA filter is rated to 350°C (662°F).
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Sweep floor clear of nuts, bolts and other protrusions which
may damage the unit.
Do not drop or jar the filter carton.
Notice
Do not attempt to repair a damaged filter unit—particularly the
medium. Any unit so repaired must be retested to assure that
hidden damage does not exist which might reduce filtering
efficiency. Repair and retest is not economical for most users.
Figure 10. Example HEPA Filter (Silicone-free) and Close-Up.
30 Version 1.1
1. Remove new filter from carton
a. Place carton on floor.
b. Tilt the carton on one corner. Handle the carton at opposing corners.
c. Remove sealing tape and fold back flaps of carton.
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. Be careful to not pull the filter from the carton.
2. Inspect the filter.
a. Visually inspect the new gasket(s) for damage during handling.
b. Use a strong lamp to examine the exposed areas of both faces for evidence of breaks,
cracks, or pinholes (Figure 10).
If a strong lamp is unavailable,
use a flashlight in a darkened
room.
c. 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.
d. Check that the adhesive seal
around the filter unit faces are
complete and unbroken.
e. Check frame corner joints for
adhesive sealing and tightness.
f. Check that gaskets are
cemented firmly to the filter
frame and that gasket pieces
are undamaged and butted or
mated at the joints.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Opened pleats in the filter media are normal and result from the
tempering process.
Danger!
Make certain power is disconnected from the oven before
removing or replacing the HEPA filter.
Remove shelves before installing HEPA FILTERS
Loosen three screws to remove the entire inner casing
assembly as a single unit
Loosen ¼ turn using 5/16
Figure 11. Remove inner casing to install HEPA filter.
Version 1.1 31
3. Pull shelves from the oven and set aside (Figure 11).
4. Loosen the three screws at the upper and lower corners of the right rear of the chamber
(Figure 11).
a. Pull out the shelf support/duct as a single unit and set it aside.
5. Remove the brass nuts and washers from the rods that hold the filter frame in place.
a. Set aside and reuse these nuts to hold the new filter in place.
b. Discard the old filter in accordance with your company’s disposal policies.
inch nut driver
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
6. LCC1-16 only: remove the filter frame,
which will be reinstalled after filter
installation.
7. For all LCC/LCD Ovens: Install HEPA
filter:
a. For the High-temperature HEPA
filter:
i. Place the filter with the
triangular gasket set against
the oven wall and the glass
braid set against the clamping
plate (Figure 12).
ii. Tighten the nuts until the
triangular gasket is
compressed to a thickness of
0.16 inch (0.4 cm).
b. For the Standard HEPA filter:
i. Place the filter with the gasket
set against the oven wall
(Figure 13).
ii. Tighten the four nuts
alternately for a torque of 28
(+/- 3 in-lbs.).
iii. Be careful not to over tighten.
6. Reinstall the inner casing assembly
using the three screws removed
earlier.
7. Reinstall the oven shelves.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
While the High-temperature filter has undergone tempering
treatment at the factory, smells and/or fumes may be released
during the first use at temperature.
LCC oven chamber temperature transitions must not exceed
1.5°C/minute to maintain class 100 chamber conditions. For ramp
rates greater than 1.5°C/minute and up to 5°C/minute, the LCD model
will maintain class 100 chamber conditions.
Version 1.1 33
4.3.1. HEPA Filter Burn-Off
4.3.1.1. HEPA Filter Burn-Off Process
The burn-off process takes place in any equipment where a new HEPA filter is used at
temperatures above 180°C / 356°F. Expect smoke, possibly a pungent odor and a light residue on
interior surfaces. This results from oxidation of the binder. Most of the binder will leave the filter
after running at a temperature of 260°C/500°F for 48 hours. Check the oven for particles or the
exhaust for smoke and odor to determine that the process is finished.
4.3.1.2. Location of HEPA Filter Burn-Off Process
Select a location for the burn-off process where generated smoke and odor 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, pay special attention to an exhaust
hook-up that fully captures the smoke and odor produced. The post-Burn-off cleaning (that is,
oven wipe down) may also generate dust. So take care if in a clean room.
4.3.1.3. Recommended HEPA Filter Burn-Off Process
1. Locate the equipment exhaust opening where chamber air is being expelled.
a. If the oven filter is burned off in a clean area, be sure to handle the equipment exhaust
appropriately.
b. If the equipment is large and the exhaust stack is a permanent service connection, connect
the equipment and exhaust stack before the burn-off process.
c. 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.
a. Silicone: Ramp at 1.25°C/min to 260°C and soak for 48 hours.
b. Media Pack: Ramp at 1.25°C/min to 260°C and soak for 48 hours.
c. High-temperature (Figure 14):
i. Option 1: Ramp at 1.7°C/min (or up to 5°C/min) to 350°C and soak for 48 hours.
ii. Option 2: Ramp to process temperature and soak for three consecutive three-hour
segments over 48 hours.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
If the equipment must be moved after the burn-off process, use
considerable care.
The binder which strengthened 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.
Figure 14. Options for starting high-temperature HEPA Filters
34 Version 1.1
Ramp 1.7°C/
min
3. Start the fan after making the electrical power connections.
4. Energize the equipment heater.
a. Use enough fresh air (or N2) to remove the smoke, while still being able to achieve and
maintain the necessary temperature.
b. 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.
c. Check the filter hold-down nuts after burn-off and tightened as necessary.
d. For best oven particle control, this step should be repeated on a regular basis.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Refer to instructions provided recorder manufacturer for more
specific installation notes.
Parameter Code
Degrees C
Degrees F
Inps
18
18
Icor 0 0
diSP
On
On
dPOS
0 0 EUU**
400
752
EUL**
0
32
ChUP
400
800*
ChLO
0 0 DFF
1
1
Version 1.1 35
4.4. MRC5000 Setup (Optional)
Temperature is retransmitted to the MRC5000 recorder from the controller. Set up the recorder
by:
1. Ensure hardware jumper JU1 is in place for the 5 VDC setting (Refer to MRC5000 Manual
included).
2. Move Mode to PROG/TEST/CAL to display Prog.
3. Press ▼ twice to display Inps. Move to each Parameter Code using ▼or ▲. Adjust each
Parameter Code using the settings in Table 5.
4. After adjusting all settings, move Mode to RUN. Display on both the Recorder and controller
should read the same.
Table 5. MRC 5000 Settings.
* Change 0-400 chart paper to 0-800 chart paper. Depending on the equipment used, 0-600
paper may be used if the maximum temperature is 500°F.
** These values must match the settings sRetOutLo and RetOutHi on the Protocol 3 Control
page. For example, if RetOutLo is 32, EUL must read 32.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Users and operators of this oven must comply with operating
procedures and training of operating personnel as required by
the Occupational Safety and Health Act (OSHA) of 1970, Section
5 and relevant safety standards, and 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.
Despatch Industries cannot be responsible for either the
process or process temperature used, or for the quality of the
product being processed. It is the responsibility of the
purchaser and operator to see that the product undergoing
processing in a Despatch oven is adequately protected from
damage.
Carefully following the instructions in this manual will help the
purchaser and operator in fulfilling that responsibility.
Caution!
Always place loads on the shelves provided to avoid possible
uneven heating and damage to the oven.
36 Version 1.1
5. Operation
5.1. Load Oven
Avoid spilling on the heater elements or oven floor when loading the oven. Do not place the load
on the oven floor plate. Placing the load on the oven floor may cause the load to heat unevenly
and the weight may cause shorting out of the heater elements. Use the shelves provided.
The two shelves are designed to be pulled out about halfway without tipping. Do not overload the
shelves. Distribute the workload evenly so airflow is not restricted. Do not overfill your oven.
The workload should not take up more than two-thirds of any dimension of the inside cavity.
5.2. Pre-Startup Checklist
•Know the system. Read this manual carefully. Make use of its instructions and explanations.
Safe, continuous, satisfactory, trouble-free operation depends primarily on your degree of
understanding the system and your willingness to keep all parts in proper operating condition.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Stackable LCC/LCD Oven Owner’s Manual OPERATION
DISCONNECT
SWITCH
POWER Switch
DOOR RELEASE
Warning!
Do not use flammable solvent or other flammable material in this
oven. Do not process closed containers of any substance or
liquid in this oven because they may explode under heat.
During the process cycle, DOOR
RELEASE will not be lit, meaning
that the oven door may not be
opened.
Figure 15. Power the Oven.
Version 1.1 37
•Check line voltage. Voltage must correspond to nameplate requirements of motors and
controls. A wrong voltage can result in serious damage. Refer to Section 1.5.4 for more
information.
•Check fresh air and exhaust openings. Do not be careless about restrictions in and around the
fresh air and exhaust openings and stacks. Under no condition can they be permitted to
become so filled with dirt that they reduce airflow.
5.3. Operating Procedure
5.3.1. Start Oven
1. Turn the yellow/red DISCONNECT
SWITCH to ON.
2. Press the POWER to ON.
a. The DOOR RELEASE pushbutton
will illuminate. This means the
door can be opened.
b. For Optional Beacon Light-equipped Units Only: The amber (center) beacon light will
illuminate, indicating that the oven is ready to receive work to be processed.
3. To open the oven door, press DOOR RELEASE while simultaneously pressing on the door.
The oven door will unlatch and open.
4. The heater is wired in series with the door switch. The door must be completely closed and
locked to activate the heater.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
The amber beacon light will be ON (steady) until the profile is
started (at the completion of Step 5).
Press Run at any time to active the Profile Mode.
After pressing Run, the display changes from Stop to Run.
Segment time remaining and Current Segment number will
display.
38 Version 1.1
5.3.2. Working with Protocol 3 Operating Modes
Refer to the Protocol 3 Controller Owner’s Manual for specific information for working with the
controller.
5.3.3. Operation Sequence when Equipped with Optional Beacon Light
1. After starting the oven (refer to Section 5.3.1), the Protocol 3 controller initializes.
a. The oven should be idle, empty, with the door closed and awaiting the next lot for
processing.
b. The Protocol 3 Controller should not be running a profile.
2. Open the oven door.
3. Place the product on the shelf in the oven.
4. Close the oven door.
5. Run the desired profile with the Protocol 3 Controller.
a. Press Select until Profile is displayed.
b. Press ▲ or ▼ to display the desired profile.
c. Press Run to start the Profile Mode.
6. At this point, the oven profile cycle is in process and the door is locked.
a. The green beacon light is ON (steady), the amber beacon light is off.
b. When the process is complete, the amber beacon should be ON, and the DOOR
RELEASE pushbutton light is on.
7. Press DOOR RELEASE pushbutton
8. Open the oven door to remove the product workload.
9. Closes the oven door to complete the process cycle. The oven is ready for the next lot.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Refer to the Protocol 3™ Controller Owner’s Manual for more
information on programming event outputs.
Press Run at any time to
activate the Profile Mode.
Oven Model
Mode
< 100 PPM
<1000 PPM
LCC1-16
Purge
150 scfh
125 scfh
Maintain
75 scfh
65 scfh
LCC1-51
Purge
200 scfh
175 scfh
Maintain
160 scfh
140 scfh
Version 1.1 39
5.3.4. Sequence of Operation for Ovens Equipped for Inert Atmosphere
Oven
1. After starting the oven (Section 5.3.1), the Protocol 3 controller initializes.
a. The oven should be idle, empty, with the door closed and awaiting
the next lot for processing.
b. The Protocol 3 Controller should not be running a profile.
c. Make certain the nitrogen flow meter is in the OFF position, that
is, fully clockwise (Figure 16).
2. Open the oven door.
3. Place the product on the shelf in the oven.
4. Close the oven door.
5. Run the desired profile with the Protocol 3 Controller.
a. Press Select until Profile is displayed.
b. Press ▲ or ▼ to display the desired profile.
c. Press Run to start the Profile Mode.
6. The first segment of the program is the PURGE MODE.
a. Set the nitrogen flow meter (Figure 16) to the desired setting (Table 6).
b. This program energizes the purge solenoid valve.
Table 6. Desired Oxygen Concentration.
7. The second segment is the MAINTAIN MODE:
a. The purge solenoid valve is first de-energized and then re-energized to maintain the
nitrogen level to less than the purge level.
b. Adjust the Nitrogen Maintain needle valve at rear of oven (Figure 17). Leave the
maintain valve energized as long as the nitrogen level is maintained (Table 6).
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
8. The third and final segment is the COOLDOWN MODE. In Cooldown mode, water valves
are energized to bring the chamber to a safe unloading temperature (Figure 18).
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
If a power failure occurs insert a torx tip tool (provided) and rotate 90 degrees counterclockwise
to allow the chamber door to open. The tool must be turned back to the locked position to allow
electrical operation again.
5.3.5.2. Main Disconnect Switch
This disconnect switch (yellow with red knob) is connected to the load break switch behind the
panel that disconnects or connects power from the main line.
5.4. Latch Opening for Models LCC/LCD Models 1-51V or 1-51NV
LCC/LCD Models 1-51V or 1-51NV have a different way of opening and closing the oven door.
5.4.1. To Open the LCC/LCD1-52V & 1-51NV Oven Door
1.Press and hold DOOR RELEASE (Figure 19).
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Figure 21. Oven door latch and door fully open (latch
perpendicular to oven door).
Figure 22. Door fully close and latch fully engaged.
42 Version 1.1
2.Lift handle while holding DOOR RELEASE
(Figure 20).
3.Open door and release DOOR RELEASE
(Figure 21).
5.4.2. To Close the LCC/LCD1-52V & 1-51NV Oven Door
1. The door latch should be perpendicular to the
oven door while in the open position (Figure
21).
2. Close the door and press the door latch all the
way closed (Figure 22). Do not forcefully slam
the door closed.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Stackable LCC/LCD Oven Owner’s Manual MAINTENANCE
Version 1.1 43
6. Maintenance
Do not attempt any service on this oven before opening the main power disconnect switch.
6.1. Checklist
Keep equipment clean. Gradual dirt accumulation retards airflow. A dirty oven can result in
unsatisfactory operation such as unbalanced temperature in the work chamber, reduced
heating capacity, reduced production, overheated components, and the like. Keep the walls,
floor and ceiling of the oven work chamber free of dirt and dust. Floating dust or accumulated
dirt may produce unsatisfactory work results. Keep all equipment accessible. Do not permit
other materials to be stored or piled against it.
Protect controls against excessive heat—particularly controls, motors or other equipment
containing electronic components. Temperatures greater than 51.5°C (125°F) should be
avoided.
Establish maintenance and checkup schedules. Do this promptly and follow the schedules
faithfully. Careful operation and maintenance will be more than paid for in continuous, safe
and economical operation.
Maintain equipment in good repair. Make repairs immediately. Delays may be costly in
added expense for labor and materials and in prolonged shut down.
Practice safety. Make it a prime policy to know what you are doing before you do it. Make
caution, patience, and good judgment the safety watchwords for the operation of your oven.
Inspect oven seals if pressure readings decrease over time (Refer to Section 3.3.4 as well as
Table 2, Columns D and/or E)
6.2. Lubrication
Fan motor bearings are permanently lubricated. All door latches, hinges, door operating
mechanisms, bearing or wear surfaces should be lubricated to ensure easy operation.
6.3. HEPA Filter Replacement
Refer to section 4.3 for filter replacement.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Problem with thermocouple
Hi-limit setpoint has been
exceeded.
Once the problem has corrected,
press Reset.
Soak LED flashing
Oven temperature has not
entered (or dropped out of) the
soak band and the soak timer
has stopped
Program a slower ramp rate or if
oven is not heating check heater
circuit.
Top LED displays
OPEN and lower LCD
displays CONTROL SENS ERR
Control thermocouple is
disconnected or broken
Repair or replace the thermocouple.
Lower LCD displays HI
LIM SENS ERR
Hi limit thermocouple is
disconnected or broken
Repair or replace the thermocouple.
Lower LCD displays
HIGH LIMIT ALARM
Hi limit temperature setpoint
has been exceeded
Determine if:
the setting is too close to the
setpoint
the SSR is defective
calibration is incorrect
The lower LCD intermittently displays HL Temp. This is not an
error message, but the Hi limit thermocouple temperature
reading.
44 Version 1.1
7. Troubleshooting: Error Messages and Alarm
Table 7 lists the more common error messages, the possible problems and remedies.
Table 7. Error Messages and Next Steps.
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means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
With Purge and Maintain valves off for a nitrogen atmosphere oven. Cooling fan off for an air
atmosphere oven.
For a nitrogen atmosphere oven only.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.