Despatch LCC-LCD2-14-3 NON Specifications
C-198
PN 161871
REVISION L
3/2009
LCC/LCD2-14-3
NON PASS-THROUGH SERIES
WITH PROTOCOL
INSTRUCTION MANUAL
PLUS
™
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.
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 612-781-5353.
Sincerely,
Despatch Industries
PREFACE
WARNING: Failure to heed
warnings in this instruction
manual and on the oven
could result in personal
injury, property damage or
death.
NOTE: Read the entire
INTRODUCTION and
THEORY OF OPERATION
before installing the oven.
This manual is your guide to the Despatch
LCC/LCD2-14-3 SERIES ovens. It is organized to give
you the information you need quickly and easily.
The INTRODUCTION section provides an overview of
the 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.
Revision A (7-02): Initial Creation.
Revision B (11-02): Drawing Changes, add line connection detail.
Revision C (08-03): Update drawings.
Revision D (11-03): Updated to Protocol Plus Version 4.0.
Revision E (03-04): Update drawings, change Class A warning.
Revision F (06-04): Change water drain/outlet temp rating.
Revision G (08-06): Update to current design.
Revision H (05-07): Update drawings
Revision I (07-07: General updates
Revision J (11-07): Updated warranty
Revision K (09-08): Added LL*1-* model reference
Revision L (03-09): Updated Controller Instructions
TABLE OF CONTENTS
INTRODUCTION ............................................................................................................. 1
Features ...................................................................................................................... 2
Options ........................................................................................................................ 2
SPECIFICATIONS .......................................................................................................... 3
Electrical Specifications ............................................................................................... 3
Physical Specifications ................................................................................................ 4
Functional Specifications ............................................................................................. 4
OVEN INSTRUCTIONS .................................................................................................. 5
Unpacking and Inspection ........................................................................................... 5
Set-up .......................................................................................................................... 6
Wiring .......................................................................................................................... 9
HEPA Filter Installation .............................................................................................. 10
HEPA Filter Burn-off ............................................................................................... 11
Filter High Limit ...................................................................................................... 13
OVEN OPERATION ...................................................................................................... 14
Oven .......................................................................................................................... 14
System Control .......................................................................................................... 15
HEPA Filters .............................................................................................................. 17
HEPA Filter Validation Testing ............................................................................... 18
Filter Unit Replacement .......................................................................................... 19
HEPA Filter / Magnehelic Pressure Gauge ............................................................ 20
HEPA Filter Preventative Maintenance Table ............................................................ 20
OPERATING ................................................................................................................. 21
Loading the Oven ...................................................................................................... 21
Pre-Startup Checklist ................................................................................................. 22
Operating Procedure ................................................................................................. 23
Starting the Oven ................................................................................................... 23
Sequence of Operation (with Optional Beacon Light) ............................................ 23
Sequence of Operation for Inert Atmosphere Oven ............................................... 24
High Limit Alarm with Alarm Silence ...................................................................... 25
Class A Configuration ............................................................................................ 26
Maintenance .............................................................................................................. 28
Checklist ................................................................................................................ 28
Lubrication ............................................................................................................. 28
PROTOCOL PLUS CONTROL ..................................................................................... 29
Theory of Control Operation ...................................................................................... 29
Operating Modes .................................................................................................... 31
Setup Mode ............................................................................................................ 31
Fast Start Mode ...................................................................................................... 31
High Limit ............................................................................................................... 32
Indicators ............................................................................................................... 32
Displays ................................................................................................................. 33
Key Functions ........................................................................................................ 33
Outputs .................................................................................................................. 34
Relay (Continued) .................................................................................................. 35
Communication ...................................................................................................... 35
Optional Software ................................................................................................... 35
INSTRUCTIONS ........................................................................................................... 36
Start-Up ..................................................................................................................... 36
Operation ................................................................................................................... 37
Manual Mode ......................................................................................................... 37
Timer Mode ............................................................................................................ 38
Profile Mode ........................................................................................................... 39
Auto Start Mode ..................................................................................................... 39
Setup Mode ............................................................................................................ 40
Instructions for Setup Mode Pages ............................................................................ 41
Program Page ........................................................................................................ 41
Sample Profile ........................................................................................................ 44
Auto Start Page ...................................................................................................... 45
PID Page ................................................................................................................ 47
Control Page .......................................................................................................... 49
Communication Page (optional) ............................................................................. 50
Real Time Clock Page ........................................................................................... 50
Relay Outputs Page (optional) ............................................................................... 51
Test Page ............................................................................................................... 52
Zone Calibration Page ........................................................................................... 53
Sensor Calibration Page ........................................................................................ 55
Enable Page .......................................................................................................... 57
Digital Inputs (optional) .......................................................................................... 58
Error Messages and Alarms ...................................................................................... 59
Quick Reference and Default Values ......................................................................... 60
Technical Specifications ............................................................................................ 67
APPENDIX: DRAWINGS .............................................................................................. 68
1
Atmosphere
Max Temp C
Seals
Model
Air
260
Silicone
LCC2-14-3
Air
260
Silicone Free
LCC2-14V-3
Air
350
Silicone
LCD2-14-3
Air
350
Silicone Free
LCD2-14V-3
Inert
260
Silicone
LCC2-14N-3
Inert
260
Silicone Free
LCC2-14NV-3
Inert
350
Silicone
LCD2-14N-3
Inert
350
Silicone Free
LCD2-14NV-3
Class A
260
Silicone
LCC2-14A-3
Class A
260
Silicone Free
LCC2-14AV-3
Class A
350
Silicone
LCD2-14A-3
Class A
350
Silicone Free
LCD2-14AV-3
INTRODUCTION
The LCC/LCD2-14-3 SERIES 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 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 LCC2-14-3 Series ovens are rated up to 260 C, and are available with air, inert
(nitrogen), or “Class A” atmospheres. The LCD2-14-3 Series have all the above listed
atmosphere options, but with a maximum temperature of 350 C. Additionally, silicone
free construction is available on all models.
The voltages available are 208V / 3 phase, 240V / 3 phase, 415V / 3 phase, and 480V /
3 Phase; all ovens use a 16kW heater. A 380V / 3 phase option is available, the heater
is rated for 12kW.
Model numbers that begin with the designation LL*1-* are without HEPA filter.
The oven’s operator interface components are located on the hinged control panel at
the front of the oven. The power components; fuse blocks and motor starters are
located on the equipment panel, behind the hinged control panel for easy access. The
transformer and the heater SSR’s are located in the lower compartment with the
recirculation and exhaust/cooling motors. Electrical components are either touch-proof
or are shielded with Lexan to prevent accidental exposure during maintenance and
troubleshooting.
The optional Despatch Protocol Manager software is used to enable customer PC
control of an oven. Despatch Protocol Plus controllers may be networked together with
a Modbus communication option when multiple ovens are operated.
2
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.
Four (4) 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 in the machinery compartment underneath the
oven, providing convenient access.
Electrical door lock prevents operator from opening chamber door when cycle is
in process. The door lock is de-energized at the end of a cycle or when power is
off.
Options
Beacon light option on control panel provides visual cycle process indication to
operator (red/amber/green)
High-limit alarm/alarm silence switch option
Oven door switch option for fans
Recorder option
Modbus RS422/485 communications option to Protocol Plus controller
3
VOLTS
AMPS
PHASE
HERTZ
HEATER
208
50.5
3
50/60
16 kW
240
44.5
3
50/60
16 kW
380
21.6
3
50
12 kW
415
25.2
3
50
16 kW
480
22.2
3
60
16 kW
NOTE that this oven is not intended to process solvents or other volatile or
flammable materials unless the “Class A” option is ordered. The oven’s forced
exhaust is intended for cooling purposes ONLY on standard and inert
(nitrogen) models.
WARNING: Failure to heed warnings in this instruction manual and on the oven
could result in personal injury, property damage or death.
WARNING: Do not use any 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.
WARNING: Do not use the oven in wet, corrosive or explosive atmospheres unless
this oven is specifically designed for a special atmosphere.
SPECIFICATIONS
Electrical Specifications
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. Power connection is
performed by the user.
4
CHAMBER SIZE INCHES (CM)
CAPACITY
IN CU. FT.
(LITERS)
OVERALL SIZE INCHES (CM)
SHELVES
PROVIDED
ON SHELF
CENTERS
APPROX. WEIGHT
MAX. # OF
SHELVES
MODEL
WIDTH**
DEPTH
HEIGHT
WIDTH
DEPTH
HEIGHT
LBS.
(KG)
NET
LBS. (KG)
SHIPPING
LCC/LCD2-14
25.5 (64)
26 (66)
37 (94)
14 (396)
47.5
(121)
41.5
(105)
71 (180)
2 ON 3”
955
(434)
1050 (477)
11
LCC/LCD2-14V
LCC/LCD2-14N
25.5 (64)
26 (66)
37 (94)
14 (396)
47.5
(121)
41.5
(105)
71 (180)
2 ON 3”
955
(434)
1050 (477)
11
LCC/LCD2-14NV
LCC/LCD2-14A
25.5 (64)
26 (66)
37 (94)
14 (396)
47.5
(121)
41.5
(105)
71 (180)
2 ON 3”
955
(434)
1050 (477)
11
LCC/LCD2-14AV
ATMO-
SPHERE
TIME TO TEMP
(minutes, w/ no load)
COOLING TIME TO TEMP
(minutes, w/ no load)
TEMPERATURE
UNIFORMITY AT
CONTROL
STABILITY
OPERATING
RANGE
W / 20°C
AMBIENT
MAX LOAD
CAPACITY
LBS. (KG)
MAX
SHELF
CAPACITY
LBS. (KG)
RECIRCULATING
FAN
MODEL
50-
100°C
50-
175°C
50-
260°C
50-
350°C
10065°C
175-
65°C
26065°C
35065°C
100°C
175°C
260°C
350°C
CFM
H.P.
LCC/LCD
2-14
AIR 3 9
15
35*
41
82
95
116*
±1°C
±2°C
±3°C
±3.5°C
±0.5°C
60-260°C*
400
50
950
1.5
LCC/LCD
2-14V
LCC/LCD
2-14N
INERT 3 9
15
35*
20
25
30
35*
±1°C
±2°C
±3°C
±3.5°C
±0.5°C
30-260°C*
400
50
950
1.5
LCC/LCD
2-14NV
LCC/LCD
2-14A
AIR 3 9
15
35*
41
82
95
116*
±1°C
±2°C
±3°C
±3.5°C
±0.5°C
60-260°C*
400
50
950
1.5
LCC/LCD
2-14AV
Physical Specifications
V = Silicone free
N = Nitrogen
A = Class A
** Actual Clear width is 24.0” (61 cm)
Functional Specifications
V = Silicone free
N = Nitrogen
A = Class A
Notes: Figures based on actual tests in an empty oven: uniformity can vary slightly depending on unit and operating conditions.
Specifications are subject to change without notice.
Addition of water cooling to air units provides cooling time to temperature equivalent to the inert units. Assumes 55°F (13ºC)
maximum water temperature at 3 GPM (11 LPM).
Exhaust fan specification is 85 CFM.
380V, and other special voltages not included.
*LCD operating range is 60º-350ºC. All measurements to and from 350ºC are based on LCD models
5
OVEN INSTRUCTIONS
The OVEN INSTRUCTIONS section provides directions on unpacking, installation,
operation and maintenance of the Despatch LCC/LCD2-14 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
WARNING:
Do not use the oven in wet, corrosive or
explosive atmospheres unless this oven is
specifically designed for a special
atmosphere.
Set-up
1. Select the location for installing
your oven.
2. Make sure the oven is level and
plumb; this will assure proper heat
distribution and operation of all
mechanical components. The rear of the oven may be placed against a wall. If
possible, provide room at the sides and rear of the oven for maintenance.
NOTE: If your oven has the “Class A” package, the rear of the oven must have a
minimum of six (6) inches of clearance between the oven and any wall
for explosion relief.
3. The oven has a four (4) inch diameter exhaust opening and is located on the rear
of the oven. The oven may be placed next to another cabinet on its right, or next
to another oven, with three-quarters of an inch clearance (measure with door
open). Exhaust air may reach 260°C on the LCC version and 350°C on the LCD
version. Make sure exhaust piping materials can withstand these temperatures.
4. (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 (4.83 – 5.52 Bar). Check for leaks.
5. (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 (6.89
Bar). 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 (11 LPM) (recommended
amount of flow).
6. (Nitrogen and Water Cooled Models) Make the drain connection at the rear of the
oven. Note there are two drain connections: water outlet and water drain. 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.
7. (Water Cooled Models) Connect the compressed air supply line to the inlet
marked “Dry Air”. The compressed air supply should run at 70 PSI but not more
than 80 PSI (4.83 – 5.52 Bar). Check for leaks.
7
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!
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 650 °F (343 °C)
temperatures. Drain lines should be insulated and/or warning labels installed that a
hazard exists.
Conduit fitting for
customer power line.
Conduit runs up to
front control panel.
Wires terminate at
disconnect switch.
Cabinet cooling fan, air
blowing out. DO NOT
COVER! Required for
lower compartment
ventilation.
4.00” (10.16CM) diameter
exhaust opening. Exhaust
temperatures may reach 260ºC
on LCC versions, and 350ºC on
LCD versions. Make sure
exhaust piping materials can
withstand these temperatures.
LCC/LCD2-14-3 POWER & EXHAUST CONNECTIONS
8
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 257 F
(125 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 257 F (125 C)
Water Inlet for cooling.
3/8” NPT female brass
connections are
provided.
Requires 3 GPM (11
LPM) flow at 55 F (13
C) to meet published
cooling rates.
MAXIMUM PRESSURE
100 PSI (6.89 Bar)
LCC/LCD2-14 UTILITY CONNECTIONS FOR NITROGEN AND WATER COOLING
9
WARNING:
All grounding and safety equipment must be
in compliance with applicable codes,
ordinances and accepted safe practices.
Power wires are
connected to this
disconnect switch
and ground bus.
Approximately 70”
(1.77 meters) of wire
length is required
from the entrance on
the rear of oven to
these connections.
Power wires are
routed through
this unused
conduit to main
equipment panel.
Conduit for power
wires are routed
through this
compartment.
Hole for conduit
fitting provided
on rear of oven
marked LINE
CONNECTIONS
for customer
power. See
LCC/LCD-14N-3
POWER &
EXHAUST
CONNECTIONS.
Wiring
NOTE: The oven must be directly
hardwired to the disconnect switch
on the equipment panel. A one (1)
inch conduit run is provided from the
rear of the lower oven compartment,
which is marked LINE CONNECTIONS to the front equipment panel, through which the
line voltage power wiring can be connected to the disconnect switch labeled LINE
CONNECTIONS in the front of panel. Consult the electrical drawings included with the
oven for wiring details. All wiring to be completed by properly trained and licensed
personnel.
LCC/LCD2-14-3 LINE CONNECTION DESCRIPTION (ALL SERIES)
10
WARNING: 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.
WARNING: Make certain that power is disconnected from
the oven before removing or replacing the HEPA filter.
HEPA Filter Installation
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
similar protrusions, which would damage the face of the unit. Do not drop
or jar the carton.
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.
Check the corner joints of the frame for adhesive sealing and
tightness.
11
WARNING: Make certain that power is disconnected from
the oven before removing or replacing the HEPA filter.
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.
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.
4. Loosen the screws at the sides and top of the supply duct/shelf supports on the
right side of the chamber. Pull out the duct/shelf support and set it aside.
5. Remove the brass nuts and washers from the rods that are holding the filter
frame in place. These nuts will be reused to hold the filter in place.
6. Remove and discard the conduit spacers from the rods behind the filter frame.
Place the filter in the oven with the seal side towards the right side oven wall.
(LCD ovens using Termikfil filter: place the filter in the oven with the glass braid
seal, not the rolled paper seal, toward the right side oven wall.)
Reinstall the filter frame using the nuts removed earlier. Make sure the filter face
is tight against the inside perimeter of the frame on all sides.
7. Reinstall the brass nuts and washers 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 (3.16 +/- .33 N-m). Be sure to compress the
gasket evenly and equally at all points with the filter frame completely covering
the opening.
8. Reinstall the shelf support/duct assembly using the screws removed earlier.
9. 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
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.
12
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 soak 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.
13
LCC2-14 HEPA / Redundant
High Limit.
Filter High Limit
The LCC/D2-14*-3 series ovens have been equipped with a redundant high limit device
to protect the HEPA filter. The sensor for the high limit is located before the air inlet of
the HEPA filter. The high limit device is located in the lower compartment of the oven.
If the oven temperature exceeds the factory set Filter High Limit temperature, the high
limit will trip, shutting down the heater and protecting the HEPA filter.
If the oven has no HEPA filter (LLC models), this redundant high limit is also used to
protect the oven from excessive operating temperatures.
Before resetting the high limit, determine the cause of the excessive temperature.
Under normal operating conditions the Filter High Limit should never trip. If the high
limit trips, it must be reset by removing the access panel to the lower compartment. The
high limit is located next to the transformer; press the reset button on the high limit. See
the MIC1162 reference manual for the operation of this high limit.
14
OVEN OPERATION
Oven
The LCC/LCD2-14 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. 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.
For the LCC/LCD2-14 model, the cooling/exhaust 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. For Class A, the exhaust fan event relay is hardwired in
the on position, as the exhaust fan is used for removing volatiles in a “Class A” oven.
For “Class A” the exhaust fan must remain on at all times. Water cooling option is also
available for faster cool down times.
The nitrogen models have type 316 stainless steel water coil which permits rapid cool
down and lower temperature operation. The nitrogen oven comes with an adjustable
flowmeter 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. 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 three inch centers.
Loading...