Despatch LCC-LCD2-14-4 User Manual

ULTRAFLEX DRYING AND FIRING FURNACE

MODELS 1000, 3615, 3630, 3640

C-204 VERSION 27

10/2008

LCC/LCD2-14

OVEN SERIES WITH PROTOCOL 3™ OWNER’S MANUAL

C-245 P/N 320208 VERSION 1 02/2013

PREFACE LCC/LCD2-14 Series Oven Owner’s Manual

Revision

Date

Author

Description

A

7/2002

Initial creation.

B

11/2002

Drawing changes, add line connection detail.

C

8/2003

Update drawings.

D

11/2003

Updated to Protocol Plus Version 4.0.

E

3/2004

Update drawings, change Class A warning.

F

6/2004

Change water drain/outlet temp rating.

G

8/2006

Update to current design.

H

5/2007

Update drawings.

I

7/2007

General updates.

J

11/2007

Updated warranty.

K

9/2008

Added LL*1-* model reference.

L

3/2009

Updated Controller Instructions.

M

3/2010

Updated Declaration of Conformity.

1

2/2013

Livingston

Revised format and updated to Protocol 3. Version 4.

2 Version 1

Revision History—LCC/LCD2-14 Series

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.

LCC/LCD2-14 Series Oven Owner’s Manual PREFACE Version 1 3

Figures

Figure 1. Main Disconnect Switch. ............................................................................................... 14

Figure 2. Door Lock Manual Override Key (LCC/LCD). ............................................................. 15

Figure 3. LCC/LCD2-14 Series Oven. .......................................................................................... 16

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.

LCC/LCD2-14 Series Oven Owner’s Manual PREFACE Version 1 5

Figure 4. Protocol 3 Operator Interface. ........................................................................................ 18

Figure 5. This Side Up Graphic. .................................................................................................... 19

Figure 6. Magnehelic Pressure Gauge Measures Pressure in Front of the HEPA Filter. .............. 21

Figure 7. LCC/LCD2-14 Series Optional Beacon Light. .............................................................. 22

Figure 8. LCC/LCD2-14 Utility Connections. .............................................................................. 25

Figure 9. Exhaust Connections. ..................................................................................................... 28

Figure 10. Line Connection. .......................................................................................................... 29

Figure 11. Conduit and Disconnect Switch/Line Connections. ..................................................... 30

Figure 12. Example HEPA Filter (Silicone-free) .......................................................................... 32

Figure 13. LCC/LCD2-14 Side Panel. .......................................................................................... 33

Figure 14. Install HEPA high-temperature filter. .......................................................................... 34

Figure 15. Install HEPA standard filter. ........................................................................................ 35

Figure 16. Typical High Limit controller. Note RESET button on right. ..................................... 37

Figure 17. Power the LCC/LCD2-14 Oven. .................................................................................. 40

Figure 18. Class A Nameplate Example. ....................................................................................... 41

Figure 19. Nitrogen Flowmeter. .................................................................................................... 43

Figure 20. Adjust Nitrogen needle valve (in compartment beneath oven). ................................... 44

Figure 21. Main Disconnect Switch. ............................................................................................. 44

Figure 22. Door Lock Manual Override Key (LCC/LCD). ........................................................... 45

Figure 23. Alarm Silence Switch................................................................................................... 53

Figure 24. LCC/LCD2-14 (Drawing 320905-01). ......................................................................... 55

Figure 25. LCC/LCD2-14 (Drawing 320905-02). ......................................................................... 55

Figure 26. LCC/LCD2-14 (Drawing 320905-03). ......................................................................... 55

Figure 27. LCC/LCD2-14 (Drawing 320905-04)......................................................................... 55

Tables

Table 1. LCC/LCD2-14 Series Oven Model Characteristics. ......................................................... 8

Table 2. Electrical Specifications. ................................................................................................. 10

Table 3. Utility Connections (Refer to Figure 8). .......................................................................... 24

Table 4. Exhaust Connection Requirements.................................................................................. 28

Table 5. Error Messages and Next Steps. ...................................................................................... 50

Table 6. HEPA Filter Pressure Reading Worksheet. ..................................................................... 51

Table 7. MRC 5000 Settings. ........................................................................................................ 52

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 MANUAL LCC/LCD2-14 Series 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 5 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.

6 Version 1

1. About This Manual

1.1. Important User Information

Copyright © 2013 by 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 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.

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

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.

LCC/LCD2-14 Series 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 7

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 LCC/LCD2-14 Series 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 LCC/LCD2-14 Series 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 MANUAL LCC/LCD2-14 Series Oven Owner’s Manual

This icon signifies information that describes an unsafe condition that may result in death, serious injury, or damage to the equipment.

Danger!

Danger is the signal word used to indicate a hazardous situation that, if not avoided, will result in death or severe injury.

Warning!

Warning is the signal word used to indicate a hazardous situation that, if not avoided, could result in death or severe injury.

Caution!

Caution is the signal word used to indicate a hazardous situation that, if not avoided, could result in moderate or minor injury.

Notice

Notice is the signal word used to indicate a hazardous situation that, if not avoided, could result in property damage.



This icon signifies supplemental important information.

LOG OUT

Bold, 10 point sans-serif typeface indicates a specific key or button on screen to click.

Model

Atmosphere

Max Temp °C

Seals

LCC2-14

Air

260

Silicone

LCC2-14V-4

Air

260

Silicone Free

LCD2-14

Air

350

Silicone

LCD2-14V-4

Air

350

Silicone Free

LCC2-14N-4

Inert

260

Silicone

LCC2-14NV-4

Inert

260

Silicone Free

LCD2-14N-4

Inert

350

Silicone

LCD2-14NV-4

Inert

350

Silicone Free

LCC2-14A-4

Class A

260

Silicone

LCC2-14AV-4

Class A

260

Silicone Free

LCD2-14A-4

Class A

350

Silicone

LCD2-14AV-4

Class A

350

Silicone Free

8 Version 1

1.4. Conventions

1.5. Specifications

1.5.1. Model Characteristics

Table 1. LCC/LCD2-14 Series Oven Model Characteristics.

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.

LCC/LCD2-14 Series 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

LCC/LCD2-14

25.5 (64)

26

(66)

37

(94)

14

(396)

47.5

(121)

41.5

(105)

71

(180)

11



The LCC/LCD2-14 oven is not intended to process solvents or other volatile or flammable materials. Oven forced exhaust is intended for cooling purposes only on standard and inert (nitrogen) models.

Order an LCC/LCD2-14 oven with the Class A option to process solvents or other volatile or flammable materials.

Models

LCC/LCD2-14

Maximum Load

(Lbs) (KG)

400 181

Maximum Shelf Capacity (Lbs)

(KG)

50 23

Recirculating fan

(CFM/LPS)

950/448

(H.P.)

1.5

Net weight (Approximate)

(Lbs)

955

(KG)

434

Shipping weight (Approximate)

(Lbs)

1050

(KG)

477

Exhaust fan (CFM/LPS) (HP)

85/40

0.03

Exhaust Opening Diameter

(Inch)

4

(mm)

101.6

*

Version 1 9

1.5.2. Dimensions

1.5.3. Capacities

Clear opening width is reduced by 1.5 inches (3.8cm) due to ¾ inch (1.9cm) shelf supports on each side.

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ABOUT THIS MANUAL LCC/LCD2-14 Series Oven Owner’s Manual

Models

Volts

Amps

Phase

Hertz

Heater (kW)

LCC/LCD2-14

208

50.5

3

50/60

16

240

44.5

3

50/60

16

380

21.6 3 50

12

415

25.2 3 50

16

480

22.2 3 60

16

Model

LCC/LCD2-14

Time to Temperature

(approximate

minutes)

(no load)

50°C – 100°C

3 min.

50°C – 200°C

9 min.

50°C – 260°C

15 min.

50°C – 350°C†

35 min.

Cooling Time to Temp

Minutes

(No Load)‡§

100°C – 65°C

41 min. (air atmos.)

15 min. (nitrogen atmos.)§

175°C – 65°C

82 min. (air atmos.)

20 min. (nitrogen atmos.)§

260°C – 65°C

95 min. (air atmos.)

25 min. (nitrogen atmos.)§

350°C – 65°C†

116 min. (air atmos.)

30 min. (nitrogen atmos.)§

Temperature

Uniformity at**

100°C

±1°C

175°C

±2°C

260°C

±3°C

350°C†

±3.5°C

Maximum Operating

Temperature

LCC

260°C

†

‡

§ **

10 Version 1

1.5.4. Power

If the line voltage for your LCC/LCD2-14 Series oven varies more than 10% from the oven voltage rating, electrical components such as relays and temperature controls may operate erratically. Power connection is performed by the user.  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

 If the line voltage is higher than the nameplate rating, motors may run hot and draw excessive

amperage

Table 2. Electrical Specifications.

1.5.5. Temperature

For LCD only, LCC 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 3 GPM (11 lpm), 13°C (55°F).

Uniformity can vary slightly depending on unit and operating conditions. Class 100 HEPA filtration will limit ramp rates. Specifications are subject to change without notice.

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.

Uniformity figures are based on a nine-point test conducted in an empty oven after stabilization period.

LCC/LCD2-14 Series Oven Owner’s Manual ABOUT THIS MANUAL

Model

LCC/LCD2-14

LCD

350°C

Operating Range

w/20°C Ambient

LCC

50°C-260°C (air atmos.)

30°C-260°C (nitrogen atmos.)

LCD

50°C-350°C (air atmos.)

30°C-350°C (nitrogen atmos.)

Control Stability

±0.5°C



The LCC/LCD2-14A Class A option requires the exhaust fan be wired ON at all times.

Danger!

LCC/LCD2-14A Class A ovens are designed for a specific amount of solvent. Exceeding this amount could result in an explosion. Do not process closed containers of any substance or liquid in this oven because they may explode under heat. In case of fire, leave door(s) as they are. Shut off electricity. Shut

off fuel. Call the fire department. Stay away.

Version 1 11

1.5.6. Capability

The standard LCC/LCD2-14 Series oven is not available for Class A flammable solvent environments. However LCC/LCD2-14 Class A ovens are specifically designed for NFPA 86 Class A requirements in which flammable solvents are present. They include a pressure relief panel, purge timer and exhaust fan. Please note the solvent handling capabilities and do not exceed those capabilities.

The ovens have an explosion relief panel and purge interlock devices:  If the LEL (Lower Explosive Limit) is exceeded and an explosive mixture is ignited in the

oven, the explosion relief will rupture, preventing any more physical damage to the oven.

 An airflow switch on the exhaust to verify exhaust fan is operating.  A purge timer preset to keep heater off until the purge period is complete. The preset purge

period guarantees four complete air exchanges to remove volatiles in the chamber before the heater can be turned on.

 Any failure of these devices will shut down the heater, preventing further processing until the

condition is remedied.

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.

SAFETY LCC/LCD2-14 Series Oven Owner’s Manual

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.

12 Version 1

2. Safety

2.1. Safety Information

Do not work on the LCC/LCD2-14 Series 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 LCC/LCD2-14 Series 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 LCC/LCD2-14 Series oven. An accidental start-up, while working on the LCC/LCD2-14 Series 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 LCC/LCD2-14 Series 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.

2.1.2. Door and Panel

The door and rear panel on the LCC/LCD2-14 Series oven protect against hazards. Power is required to open the door and the oven heater must be OFF when the door is open. Operation

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.

LCC/LCD2-14 Series Oven Owner’s Manual SAFETY

Danger!

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 13

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 LCC/LCD2-14 Series oven. Do not open the door while the machine is running.

The LCC/LCD2-14 is also equipped with a door switch which turns off the heater when the door is opened.

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 the LCC/LCD2-14 Series oven are strictly

forbidden. Never modify any electrical circuits. Unauthorized modifications can impair the function and safety of the LCC/LCD2-14 Series oven.

2.4. Fire

Keep the LCC/LCD2-14 Series oven clean and free of scrap materials, oil or solvents to prevent the possibility of fire.

1. Leave door as is.

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.

SAFETY LCC/LCD2-14 Series Oven Owner’s Manual

Danger!

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.

Figure 1. Main Disconnect Switch.

14 Version 1

2. De-energize the machine immediately by turning OFF the DISCONNECT SWITCH (if

applicable).

3. Turn off the remote main disconnect (customer supplied disconnect).

4. Shut off fuel.

5. Call the fire department.

6. Stay away.

2.5. Equipment Lockout Requirements

To prevent injury or equipment damage during inspection or repair, the LCC/LCD2-14 Series oven must be locked out.

2.5.1. Main Disconnect Switch

When a risk of personal injury or damage to the LCC/LCD2-14 Series oven exists, turn OFF the

DISCONNECT SWITCH on the front of the oven (Figure 1). The DISCONNECT SWITCH 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.

LCC/LCD2-14 Series Oven Owner’s Manual SAFETY



To check door and latch for smooth operation, use a hollow point torx tip tool and rotate 90 degrees counterclockwise the manual override in the safety switch. It must be turned back to the locked position to allow electrical operation.

Warning!

The LCC/LCD2-14 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 LCC/LCD2-14 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 2. Door Lock Manual Override Key (LCC/LCD).

Version 1 15

2.5.2. Manual Unlock

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.

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 OPERATION LCC/LCD2-14 Series Oven Owner’s Manual

Figure 3. LCC/LCD2-14 Series Oven.

16 Version 1

3. Theory of Operation

3.1. The LCC/LCD2-14 Series Oven

The LCC/LCD2-14 Series oven (Figure 3), a class 100 clean room oven, offers HEPA (High Efficiency Particulate Air) filtration for processes where minimized contamination is essential. Forced convected airflow provides rapid uniform distribution of heat. 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. A magnehelic differential pressure gauge monitors pressure drop across the HEPA filter.

The oven operator interface is located on the hinged control panel at the front of the oven (Figure 3). Power components, fuse blocks and motor starters are located on the equipment panel, behind the hinged control panel, for easy access (Figure 8). 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® material to prevent accidental exposure during maintenance and troubleshooting.

The cooling/exhaust fan is controlled on/off by an event relay in the Protocol 3 controller. 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 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.

Two electropolished stainless steel wire shelves are provided. The shelves are removable and adjustable on three inch centers.

The optional Despatch Protocol Manager software is used to enable customer PC control of an oven. Despatch Protocol 3 controllers may be networked together with a Modbus communication option when multiple ovens are operated.

3.1.1. LCC/LCD2-14 Oven Operation Details

The LCC/LCD2-14 ovens are available with air, inert (nitrogen) or Class A atmospheres. LCC models are rated up to 260°C, and LCD models are rated up to 350°C. Silicone free construction is available on all models.

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.

LCC/LCD2-14 Series Oven Owner’s Manual THEORY OF OPERATION

Danger!

LCC/LCD2-14A Class A ovens are designed for a specific amount of solvent. Exceeding this amount could result in an explosion. Do not process closed containers of any substance or liquid in this oven because they may explode under heat. In case of fire, leave door(s) as they are. Shut off electricity. Shut

off fuel. Call the fire department. Stay away.

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.



The exhaust fan of a Class A oven must remain on at all times.

Version 1 17

The LCC2-14 Series ovens have an electrical door lock that prevents the operator from opening the chamber door when a cycle is in process. The door lock is de-energized at the end of a cycle or when power is off.

The nitrogen models have a Type 316 stainless steel water coil which permits rapid cool-down and lower temperature operation. The nitrogen oven comes with a flowmeter for adjusting purge rate, a 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.

3.1.1.1. LCC/LCD2-14A (Class A) Operation Details

The exhaust fan event relay is hardwired in the ON position for Class A ovens to remove volatiles. The exhaust fan must remain on at all times. A water cooling option is also available for faster cool-down times.

The LCC/LCD2-14A Class A oven is specifically designed for Class A NFPA 86 requirements in which flammable solvents are present. They include a pressure relief panel, purge timer and exhaust fan. Please note the solvent handling capabilities and do not exceed those capabilities.

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 OPERATION LCC/LCD2-14 Series Oven Owner’s Manual

Figure 4. Protocol 3 Operator Interface.

18 Version 1

3.2. The Protocol 3 Controller

The Protocol 3 is a microprocessor based digital temperature controller designed for simple and flexible oven operation (Figure 4). 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.

3.3. HEPA Filters

The LCC/LCD2-14 Series ovens use HEPA (High Efficiency Particulate Air) filters to limit particulate size in the work 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).

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.

Despatch LCC-LCD2-14-4 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Revision History—LCC/LCD2-14 Series

Table of Contents

Figures

Tables

1. About This Manual

1.1. Important User Information

Copyright © 2013 by Despatch Industries.

Printed and bound in the United States of America.

1.2. Manufacturer & Service

1.3. Organization of this Manual

1.4. Conventions

1.5. Specifications

1.5.1. Model Characteristics

Table 1. LCC/LCD2-14 Series Oven Model Characteristics.

1.5.2. Dimensions

1.5.3. Capacities

1.5.4. Power

Table 2. Electrical Specifications.

1.5.5. Temperature

1.5.6. Capability

2. Safety

2.1. Safety Information

2.1.1. Lockout

2.1.1.1. Lockout Requirements

2.1.1.2. Lockout Procedure

2.1.2. Door and Panel

2.2. Maintenance

Only qualified and trained personnel should perform maintenance or repair.

2.3. Electrical Power

2.4. Fire

2.5. Equipment Lockout Requirements

2.5.1. Main Disconnect Switch

2.5.2. Manual Unlock

3. Theory of Operation

3.1. The LCC/LCD2-14 Series Oven

3.1.1. LCC/LCD2-14 Oven Operation Details

3.1.1.1. LCC/LCD2-14A (Class A) Operation Details

3.2. The Protocol 3 Controller

Review the Protocol 3 Controller Owner’s Manual for more information.

3.3. HEPA Filters