Despatch LCC Series User manual

P/N 125166
REV. 11/07
C-159
LCC SERIES OVENS
INSTRUCTION MANUAL
Model
Volts
Phase
Hz
Heater Watts
Total
LCC 1-11
240
1
50/60
3,000
14.2
LCC 1-11N
240
1
50/60
3,000
14.2
LCC 1-54
240
1
50/60
6,000
26.7
LCC 1-54N
240
1
50/60
6,000
26.7
LCC 1-54NV
240
1
50/60
6,000
26.7
LCC 1-87
240
1
50/60
9,000
42.2
LCC 1-87N
240
1
50/60
9,000
42.2
LCC 1-87NV
240
1
50/60
9,000
42.2
Prepared by:
Despatch Industries
P.O. Box 1320
Minneapolis, MN 55420-1320
Customer Service 800-473-7373

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 612-781-
5353.
Thank you for choosing Despatch.
Sincerely,
Despatch Industries
Notice
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.
Caution
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.

i
PREFACE
This manual is your guide to the Despatch oven. It is organized to give you the
information you need quickly and easily.
The INTRODUCTION section provides an overview
of the Despatch oven.
The THEORY OF OPERATION section details the
function and operation of assemblies and subassem-
blies on the Despatch oven.
The INSTRUCTIONS section provides directions on unpacking, installing, operating
and maintaining the Despatch oven.
The APPENDIX section contains Special Instructions
for operating the control instrument, a Troubleshoot-
ing Table, and a list of Accessories.
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.
NOTE:
Read the entire
INTRODUCTION and THEORY
OF OPERATION before
installing the oven.
WARNING:
Failure to heed warnings in this
instruction manual and on the
oven could result in personal
injury, property damage or
death.

ii

iii
TABLE OF CONTENTS
INTRODUCTION............................................................................................................. 1
Special Features ..................................................................................................1
SPECIFICATIONS ..........................................................................................................2
Dimensions........................................................................................................... 2
Capacities............................................................................................................. 3
Power...................................................................................................................3
Temperature.........................................................................................................4
THEORY OF OPERATION.............................................................................................5
Construction ......................................................................................................... 6
Cooling.................................................................................................................6
Inert Atmosphere.................................................................................................. 6
HEPA Filters.........................................................................................................7
Definitions..................................................................................................7
Packaging and Shipping............................................................................7
Handling..................................................................................................... 8
HEPA Filter Validation Testing .................................................................. 8
D.O.P. Testing ................................................................................8
Class 100 Testing ...........................................................................8
Validation Testing ...........................................................................9
The Necessity of the Burn-off Process...................................................... 9
Filter Unit Replacement ............................................................................9
CONTROL Instrument........................................................................................ 10
HIGH LIMIT Instrument ...................................................................................... 10
Product High Limit Instrument .................................................................10
Oven High Limit Instrument ..................................................................... 11
INSTRUCTIONS ........................................................................................................... 12
Unpacking and Inspection.................................................................................. 12
Set-up.................................................................................................................13
HEPA Filter Installation............................................................................15
HEPA Filter Burn-off................................................................................16
OPERATING.................................................................................................................18
Loading the Oven............................................................................................... 18
Pre-Startup Checklist..........................................................................................19
Startup................................................................................................................19
Shut Down...............................................................................................22
Maintenance.......................................................................................................23
Checklist..................................................................................................23
Tests................................................................................................................... 24
Nitrogen Supply Check ...........................................................................24

iv
Control Output Check.............................................................................. 24
Thermocouple Test..................................................................................25
Safety Controls........................................................................................ 25
Replacement......................................................................................................26
Parts ........................................................................................................26
CONTROL Instrument.............................................................................26
Fan Motor ................................................................................................ 27
Replacing HIGH LIMIT ............................................................................28
Thermocouple Break Protection ..............................................................29
Replacing the Thermocouple........................................................29
Heater Unit...............................................................................................30
APPENDIX....................................................................................................................31
Troubleshooting..................................................................................................31
Factory Installed Options....................................................................................33
Drawings.............................................................................................................34

v

1
INTRODUCTION
This section provides an overview of the Despatch LCC Series oven. The LCC offers
HEPA filtration for processes where minimization of contamination is essential. Fresh
air and nitrogen (noted with an N suffix) models are available.
Special Features
The removable HEPA (High Efficiency Particulate Air) filter is designed to provide a
constant flow of 99.97% clean air to the product. Other special features include:
Digital TEMP CONTROL and manual reset HIGH LIMIT to protect the chamber
workload as well as the oven itself.
Stainless steel interior with all interior seams continuously welded on the
insulation side to protect the work chamber from contamination and to permit
chamber washing without damaging insulation.
Silicon door seals, shaft seals and gasketing (Viton Fluorocarbon on NV
models).
Door seals and interior chamber walls are removable for cleaning.
Heater with a five year warranty.
Cooling coil to provide rapid cooldown and low temperature operation (nitrogen
models only).
Scratch-resistant SilverClay® baked enamel exteriors and a stainless steel
interior for easy cleaning.
Silicon-free construction on NV models.
Nitrogen operation (N and NV models only)

2
SPECIFICATIONS
Dimensions
Model
Chamber Size, inches (cm)
Capacity,
ft3(liters)
Overall Size, inches (cm)
Maximum
Number of
Shelves
W
D
H
W
D
H
LCC 1-11
10
(25)
14
(35)
14
(35)
1.1
(31)
25
(64)
21
(53)
32
(81)
5
LCC 1-11N
10
(25)
14
(35)
14
(35)
1.1
(31)
26
(66)
21
(53)
32
(81)
5
LCC 1-54
18
(46)
20
(51)
26
(66)
5.4
(153)
34
(153)
29
(74)
43
(109)
11
LCC 1-54N,
LCC 1-54NV
18
(46)
20
(51)
26
(66)
5.4
(153)
34
(153)
29
(74)
43
(109)
11
LCC 1-87
22
(56)
20
(51)
34
(86)
8.7
(248)
39
(99)
29
(74)
52
(132)
14
LCC 1-87N,
LCC 1-87NV
22
(56)
20
(51)
34
(86)
8.7
(248)
39
(99)
29
(74)
52
(132)
14

3
Capacities
Model
LCC 1-11
LCC 1-11N
LCC 1-54
LCC 1-54N,
LCC 1-54NV
LCC 1-87
LCC 1-87N,
LCC 1-87NV
Maximum
Load
Lbs
25
25
150
150
200
200
Maximum
Shelf Load
Lbs
10
10
25
25
25
25
Recirculating
Fan
CFM
H.P.
265
1/4
265
1/4
400
1/4
400
1/4
990
3/4
990
3/4
Approximate
Net Weight
Lbs.
KG
285
129
285
129
380
172
380
172
500
227
500
227
Shipping
Weight
(approximate)
Lbs.
KG
400
181
400
181
615
279
615
279
750
341
750
341
Power
Line voltages may vary in some geographical locations. If your line voltage is much
lower than the oven voltage rating, warm up time will be longer and motors may
overload or run hot. If your line voltage is higher than name plate rating, the motor 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 1-11
240
14.2
50/60
1
3
None, Hardwired
LCC 1-11N
240
14.2
50/60
1
3
None, Hardwired
LCC 1-54
240
26.7
50/60
1
6
None, Hardwired
LCC 1-54N
240
26.7
50/60
1
6
None, Hardwired
LCC 1-54NV
240
26.7
50/60
1
6
None, Hardwired
LCC 1-87
240
42.2
50/60
1
9
None, Hardwired
LCC 1-87N
240
42.2
50/60
1
9
None, Hardwired
LCC 1-87NV
240
42.2
50/60
1
9
None, Hardwired
* Oven designed for 240 volts (see nameplate on oven) will operate satisfactorily on a minimum of 208 volts, but with a 25%
reduction in heater power. If your power characteristics are lower, contact Despatch Industries.

4
Temperature
Model
LCC 1-11
LCC 1-11N
LCC 1-54
LCC 1-54N,
LCC 1-54V
LCC 1-87
LCC 1-87N,
LCC 1-87NV
Time to
Temperature
(approximate
minutes)
25 C -
100 C
4
4
5
5
4
4
25 C -
200 C
13
13
14
14
12
12
25 C -
260 C
20
20
23
23
18
18
Recovery Time
Door Open 1
Minute
(approximate
minutes)
125 C
0.5
0.5
1
1
1
1
200 C
1
1
2
2
2
2
260 C
2.5
2.5
3
3
3
3
Temperature
Uniformity at
(maximum)
125 C
± 1 C
± 1 C
± 2 C
± 2 C
± 1 C
± 1 C
200 C
± 2 C
± 2 C
± 2 C
± 2 C
± 2 C
± 2 C
260 C
± 3 C
± 3 C
± 3 C
± 3 C
± 3 C
± 3 C
Maximum Operating
Temperature
260 C
260 C
260 C
260 C
260 C
260 C
Minimum
Operating
Temperature
Above Ambient
(approximate)
Without
Water
Cooling
48 C
53 C
34 C
85 C
54 C
116 C
With
Water
Cooling
9 C
9 C
18 C
18 C
35 C
40 C
Cooling Time
Empty Oven
(approximate
minutes)
200 C -
50 C
63
64
48
58
54
78
Control Stability
± 0.3 C
± 0.3 C
± 0.3 C
± 0.3 C
± 0.3 C
± 0.3 C
Repeatability
± 0.5 C
± 0.5 C
± 0.5 C
± 0.5 C
± 0.5 C
± 0.5 C

5
THEORY OF OPERATION
The THEORY OF OPERATION section details the function and operation of the
Despatch LCC Series Ovens.
The LCC series 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. An absolute
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.

6
Construction
The LCC series oven has a type 304-2B 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 chamber walls and silicon door gaskets (Viton Fluorocarbon on NV models) can
be easily removed for cleaning. Heater frame, fan wheel and motor shaft are
constructed of stainless steel.
Exteriors are steel finished in SilverClay enamel, baked to a 2H hardness for chip and
scratch resistance. 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.
Cooling
Air models have an adjustable fresh air damper which allows cooling of the oven.
Nitrogen models have a stainless steel water coil. When used in conjunction with the
optional flowmeter the cooling coil permits rapid cooldown and low temperature
operation.
Inert Atmosphere
An inert atmosphere option offers the advantages of both a clean room oven and inert
atmosphere oven. The nitrogen portion for the LCC series oven includes a manual
three way valve and two flowmeters, connected by piping to the inlet connection on the
lower back panel marked nitrogen supply.

7
HEPA Filters
Absolute HEPA (High Efficiency Particulate Air) filters are used to limit particulate size
in the work chamber to 0.3 microns or less. The gentle entrance and exit air velocity to
and from the HEPA filter results in high efficiency and long life for the HEPA filters.
Definitions
HEPA - High Efficiency Particulate Air
Burn-Off - A process for getting rid of 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 the testing
phase to spot defects or measure filter efficiency.
Binder - An organic substance that is used in the construction of the filter that gives
some structural strength to the media.
Packaging and Shipping
Packaging practice varies among the filter unit manufacturers. Normally units are
packaged in cardboard cartons with various approaches for internal strengthening and
impact-resistance of the container. The shipping carton normally is marked with a
vertical arrow and "This Side Up". A filter unit is placed in the carton so that the pleated
folds are vertical (running from top to bottom - not side to side).
Filters should be shipped, handled and stored with the pleats in the vertical position. If
shipped with the pleats in the horizontal position, the filter medium may break at the
adhesive line. If handled or stored with the pleats in the horizontal position the pleats
may sag.
Moreover, the filter unit should be installed with the pleats in the vertical position. When
installed in the horizontal position the pleats form shelves for the collection of entrapped
material. The accumulated weight of this material causes sagging and leads to an early
failure of the unit.
NOTE:
Chamber temperature transitions must not
exceed 1.5 C/minute in order to maintain
class 100 chamber conditions. Optional
filter is available for transition rates up to 5
C/minute. Consult the factory.

8
Handling
The filter is shipped in the original carton or package that the filter manufacturer uses.
This will give good storage and maximum protection from dirt and moisture.
HEPA filters should be stored and moved in the shipping carton with in the upright
position. Handling should be kept to a minimum. During installation the filter should be
removed from the shipping carton and installed directly into the oven.
If for any reason an unpackaged filter unit must be placed with its face on the floor or
other surface, the surface must be cleared of every object or irregularity which might
damage the filter pack.
HEPA Filter Validation Testing
This section describes the Despatch position and recommendations for HEPA filter
testing and oven validation procedures. Despatch guarantees that the filters will meet
specified efficiency ratings when the filter is:
properly installed
run at or below 200 C, at a constant temperature
run before burn-in
D.O.P. Testing
In D.O.P. testing aerosol particles of submicron size are used to spot defects or
measure filter efficiency. Degenerative by-products of this test are distributed
throughout the oven chamber upon heat-up. Therefore Despatch does not recommend
D.O.P. filter testing.
Class 100 Testing
Despatch guarantees the environment within the oven to be Class 100. This
classification is based upon measurement of the particulate level within the oven work
chamber.
Class 100 testing may be performed before or after a proper filter burn-in procedure
has been performed. Despatch will guarantee Class 100 conditions measurements
based on two methods of test. The direct method of test employs an extraction type
particulate analyzer. The indirect method involves particle settling over a specified

9
period of time onto a clean disk.
Validation Testing
Based on the issues discussed in this section, Despatch recommends the following test
sequence for pharmaceutical Class 100 ovens.
1. Proper installation of the HEPA filters.
2. Cold D.O.P. challenge to determine integrity of oven chamber and filter gaskets.
3. Proper filter burn-off procedure.
4. Class 100 testing inside the work chamber.
The Necessity of the Burn-off Process
HEPA filters contain a binder material which protects the filter media during production
and shipping. This smoke is typically not desirable during normal operation of the oven.
Burning off the binder will ensure a clean process at elevated temperatures.
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.
Filter Unit Replacement
Replacement of the filter unit will be necessary for various reasons.
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.

10
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.
CONTROL Instrument
The CONTROL instrument operates the heating element in response to the entered
temperature setpoint. It provides digital indication of the setpoint and actual oven
temperature. Please refer to the operator’s manual for the CONTROL instrument
provided with the oven, for detailed operating instructions.
HIGH LIMIT Instrument
The purpose of the HIGH LIMIT instrument is to protect the product and/or the oven
from excessively high temperatures. If the setting on the HIGH LIMIT is exceeded, the
heating process will discontinue.
The HIGH LIMIT instrument must be set to a temperature slightly higher than the
CONTROL instrument setpoint or to a temperature that should not be exceeded in the
process. The instrument must be manually reset by pushing the red button.
Product High Limit
Instrument
If the product being processed has a
critical high temperature limit, the HIGH
LIMIT instrument should be used as a
product high limit instrument. The HIGH
LIMIT instrument should be set to a
temperature somewhat below the
temperature at which the product could be
damaged. Use the CONTROL instrument
or a pyrometer to determine the product
setting. If the destructive temperature of
the product is already known, this could be
used as a point below which the product
HIGH LIMIT is set.
NOTE:
Despatch Industries cannot be responsible
for either the process, the 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 assist the purchaser and
operator in fulfilling that responsibility.

11
Oven High Limit Instrument
If the product does not have a critical high temperature limit, the HIGH LIMIT can be
used as an oven HIGH LIMIT instrument. An oven HIGH LIMIT instrument protects
oven equipment.
Since the HIGH LIMIT instrument does not show the temperature, it can be properly set
only after oven is in operation. Until then, the HIGH LIMIT should be set at maximum
position so all preliminary testing and adjusting can be done.
Never operate the oven at a temperature in excess of the maximum operating
temperature of 260 C (500 F).