Despatch LCC-LCD-4 User Manual

ULTRAFLEX DRYING AND FIRING FURNACE

MODELS 1000, 3615, 3630, 3640

C-204 VERSION 1.1

10/2008

STACKABLE LCC/LCD OVEN

OWNER’S MANUAL

C-244 P/N 320207 VERSION 1.1 08/2012

PREFACE Stackable LCC/LCD Oven Owner’s Manual

Revision

Date

Author

Description

1

3/2012

K. Livingston

Revise for Protocol 3. Revised images for LCC-4.

1.1

8/2012

K. Livingston

Miscellaneous revisions and additions including LCC/LCD1-52V & 1-51NV Oven Door update and HEPA filter installation update.

2 Version 1.1

Revision History

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD Oven Owner’s Manual PREFACE Version 1.1 3

Figures

Figure 1. Stackable LCC/LCD Series Oven. ................................................................................. 15

Figure 2. Protocol 3 Operator Interface. ........................................................................................ 16

Figure 3. This Side Up Graphic. .................................................................................................... 17

Figure 4. Magnehelic Pressure Gauge Measures Pressure in front of the HEPA filter. ............... 20

Figure 5. Door Lock Manual Override Key (LCC/LCD/LLC/LLD). ................................................. 21

Figure 6. LCC/LCD Connections Panel. ........................................................................................ 24

Figure 7. Exhaust Port on the Left Side of the LCC/LCD Oven. ................................................... 27

Figure 8. Open the front panel for access. .................................................................................... 28

Figure 9. Conduit entrance at rear of oven and open front panel. ................................................ 28

Figure 10. Example HEPA Filter (Silicone-free) and Close-Up. .................................................... 30

Figure 11. Remove inner casing to install HEPA filter.................................................................. 31

Figure 12. Install HEPA high-temperature filter. ............................................................................ 32

Figure 13. Install HEPA standard filter. ......................................................................................... 32

Figure 14. Options for starting high-temperature HEPA Filters ..................................................... 34

Figure 15. Power the Oven. ........................................................................................................... 37

Figure 16. Nitrogen Flowmeter. ..................................................................................................... 39

Figure 17. Adjust Nitrogen Maintain Needle Valve. ....................................................................... 40

Figure 18. Water and Nitrogen Piping Schematic. ........................................................................ 40

Figure 19. Press and hold DOOR RELEASE. ............................................................................... 41

Figure 20. Pull handle out away from door. ................................................................................... 42

Figure 21. Oven door latch and door fully open (latch perpendicular to oven door). .................... 42

Figure 22. Door fully close and latch fully engaged. ...................................................................... 42

Figure 23. LCC1-16-4 (Drawing 313930-01). ................................................................................ 47

Figure 24. LCC1-16-4 (Drawing 313930-02). ................................................................................ 47

Figure 25. LCC1-16-4 (Drawing 313930-03). ................................................................................ 47

Figure 26. LCC1-16N-4 (Drawing 313931-01). ............................................................................. 47

Figure 27. LCC1-16N-4 (Drawing 313931-02). ............................................................................. 47

Figure 28. LCC1-16N-4 (Drawing 313931-03). ............................................................................. 47

Figure 29. LCC1-51-4 (Drawing 313932-01). ................................................................................ 47

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD Oven Owner’s Manual PREFACE Version 1.1 5

Figure 30. LCC1-51-4 (Drawing 313932-02). ................................................................................ 47

Figure 31. LCC1-51-4 (Drawing 313932-03). ................................................................................ 47

Figure 32. LCC1-51N-4 (Drawing 313933-01). ............................................................................. 47

Figure 33. LCC1-51N-4, Drawing 313933-02). ............................................................................. 47

Figure 34. LCC1-51N-4 (Drawing 313933-03). ............................................................................. 47

Figure 35. LCC1-51N-4 (Drawing 313933-04). ............................................................................. 47

Figure 36. LCC1-51-4 (Drawing 313934-01). ................................................................................ 47

Figure 37. LCC1-51-4 (Drawing 313934-02). ................................................................................ 47

Figure 38. LCC1-51-4 (Drawing 313934-03). ................................................................................ 47

Figure 39. LCC1-51N-4 (Drawing 313935-01). ............................................................................. 47

Figure 40. LCC1-51N-4 (Drawing 313935-02). ............................................................................. 47

Figure 41. LCC1-51N-4 (Drawing 313935-03). ............................................................................. 47

Figure 42. LCC1-51N-4 (Drawing 313935-04). ............................................................................. 47

Tables

Table 1. Model Number Key. ........................................................................................................... 8

Table 2. HEPA Filter Pressure Reading Worksheet...................................................................... 20

Table 3. Oven Utility Connections. ................................................................................................ 23

Table 4. Exhaust Connection Requirements. ................................................................................ 27

Table 5. MRC 5000 Settings. ........................................................................................................ 35

Table 6. Desired Oxygen Concentration. ...................................................................................... 39

Table 7. Error Messages and Next Steps. .................................................................................... 44

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 Stackable LCC/LCD Oven Owner’s Manual



Values displayed on screens are examples only. Though those values may be typical, contact Despatch Industries for the final value.



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

Danger!

Only fully-trained and qualified personnel should setup and maintain this equipment. Improper setup and operation of this equipment could cause an explosion that may result in equipment damage, personal injury or possible death.

6 Version 1.1

1. About This Manual

1.1. Important User Information

Copyright © 2012 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.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD Oven Owner’s Manual ABOUT THIS MANUAL

Global Headquarters

Contact

Service & Technical Support

Despatch Industries

8860 207th Street Lakeville, MN 55044 USA

International/Main: 1-952-469-5424 US toll free: 1-888-337-7282 Fax: 1-952-469-4513 info@despatch.com www.despatch.com

Service: 1-952-469-8230 US toll free: 1-800-473-7373 Service @despatch.com

Danger!

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

Version 1.1 7

The information in this document is not intended to cover all possible conditions and situations that might occur. The end user must exercise caution and common sense when installing or maintaining Despatch Industries products. If any questions or problems arise, call Despatch Industries at 1-888-DESPATCH or 1-952-469-5424.

1.2. Manufacturer & Service

The Stackable LCC/LCD Oven is manufactured by Despatch Industries.

Despatch has specialized in thermal processing for over 100 years. Technical expertise gained over those years helps provide innovative solutions to critical applications in vertical markets and cutting edge technology worldwide. Despatch products are backed by a drive for long-term customer satisfaction and a strong sense of responsibility. The worldwide network of factorytrained Service Professionals is available to support your Despatch equipment. From full service preventive maintenance to routine repair and certified calibration and uniformity, the Despatch service network is positioned to respond to your business needs. Our service programs are customized to meet your specific needs using our Advantage Service Assurance Program (ASAP). For more information on ASAP, visit www.despatch.com.

1.3. Organization of this Manual

This owner’s manual contains the most comprehensive set of information for the Despatch Stackable LCC ovens, including installation instructions, theory of operation, operating instructions, among other things.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

ABOUT THIS MANUAL Stackable LCC/LCD Oven Owner’s Manual



This icon signifies important information.

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

Danger!

A condition that may result in death, serious injury, or damage to equipment.

Warning!

A condition that may result in serious injury or damage to equipment.

Caution!

A condition that may result in damage to equipment or product.

LOG OUT

Reversed-out, Bold, 10pt Arial typeface indicates a specific key or button on screen to click.

Model

Number

L 1 - - 4

Position in

Number

1 2 3 4 5 6 7 8

Position in

Model Number

Letter / Number

Letter Meaning

2

C

Model has a HEPA filter

2

L

Model does not have a HEPA filter

3

C

Model operates at 260°C

3

D

Model operates at 350°C

5 & 6

16

1.6 cubic foot model

5 & 6

51

5.1 cubic foot model

7 & 8

N

Model uses a nitrogen atmosphere

7 & 8

V

Model uses Viton* synthetic rubber (Siliconefree option)

*

8 Version 1.1

1.4. Conventions

1.5. Specifications

1.5.1. Model Numbering and Naming Conventions

Table 1 lists the model numbers and follows these conventions:

Table 1. Model Number Key.

Example: LLD1-51NV-4 This 5.1 ft3 model does not have a HEPA filter, operates at 350°C, uses nitrogen and is siliconefree.

Trademark of E. I. Du Pont De Nemours & Company Corporation.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD Oven Owner’s Manual ABOUT THIS MANUAL

Models

Chamber Size

inches (cm)

Capacity ft3 (liters)

Overall Size inches (cm)

Maximum

number of

Shelves

W D H W D

H

LCC1-16-4 LCD1-16-4 LCC1-16N-4 LCD1-16N-4

15

(38)

14

(36)

14

(36)

1.6

(45)

32.5 (83)

35.5 (90)

20.75

(53)

5

LCC1-51-4 LCD1-51-4 LCC1-51N-4 LCD1-51N-4

23

(58)

20

(51)

20

(51)

5.1

(144)

40.5

(103)

42.5

(108)

27

(69)

8



The LCC/LCD oven is not intended to process solvents or other volatile or flammable materials. Oven exhaust is intended for cooling purposes only.

Model

LCC1-16-4 & LCD1-16-4

LCC1-16N-4 & LCD1-16N-4

LCC1-51-4 & LCD1-51-4

LCC1-51N-4 & LCD1-51N-4

Maximum Load (Lbs)

200

Maximum shelf load (Lbs)

50

25

Recirculating fan

(CFM)

240

435

(H.P.)

1/4

Net weight (Approximate)

(Lbs)

250

380

(KG)

114

172

Shipping weight (Approximate)

(Lbs)

350

525

(KG)

159

238

Exhaust capacity (forced exhaust) (CFM)

35

73

Exhaust Outlet

(Inch)

1.88 x 2.88

(mm)

(48.0 x 73.4)

Version 1.1 9

1.5.2. Dimensions

*LLC & LLD models have same dimensions.

1.5.3. Capacities

1.5.4. Power

If the line voltage for your LCC/LCD Oven varies more than 10% from the oven voltage rating, electrical components such as relays and temperature controls may operate erratically.  If the line voltage is lower than the oven voltage rating, heat-up time may be significantly

longer and motors may overload or run hot

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

ABOUT THIS MANUAL Stackable LCC/LCD Oven Owner’s Manual

Model

Volts *

Amps

Hertz

Heater Phase

KW

Cord and Plug

LCC1-16-4 LCD1-16-4

240

14.8

50/60

1

3

None, hardwired

LCC1-16N-4 LCD1-16N-4

240

14.0

50/60

1

3

None, hardwired

LCC1-51-4 LCD1-51-4

240

27.7

50/60

1

6

None, hardwired

LCC1-51N-4 LCD1-51N-4

240

27.7

50/60

1

6

None, hardwired

10 Version 1.1

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

amperage

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

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD Oven Owner’s Manual ABOUT THIS MANUAL

Model

LCC1-16-4 LCD1-16-4

LCC1-16N-4 LCD1-16N-4

LCC1-51-4 LCD1-51-4

LCC1-51N-4 LCD1-51N-4

Time to

Temperature

(approximate

minutes) (no load)

40°C –

100°C

7 min.

5 min.

40°C –

200°C

30 min.

27 min.

40°C –

260°C

45 min.

35 min.

40°C – 350°C†

60 min.

50 min.

Cooling Time to

Temp

Minutes

(No Load)‡ 100°C –

55°C

35 min.

30§ min.

40 min.

25§ min.

200°C –

55°C

65 min.

55§ min.

75 min.

40§ min.

260°C –

55°C

75 min.

60§ min.

85 min.

45§ min.

350°C –

55°C†

130 min.

80§ min.

115 min.

50§ min.

Temperature

Uniformity at**

100°C

±1°C

200°C

±2°C

260°C

±3°C

350°C

±4°C

Maximum

Operating

Temperature

LCC

260°C

LCD

350°C

Operating

Range w/20°C

Ambient

LCC

40°C-260°C

35°C-260°C††

45°C- 260°C

35°C-260°C††

LCD

40°C-350°C

40°C-350°C††

40°C-350°C

40°C-350°C††

Control Stability

+/- 0.5°C

†

‡

§ **

††

Version 1.1 11

1.5.5. Temperature

For LCD & LLD only, LCC & LLC maximum temperature: 260°C. Minimum operating temperatures and cooling times are based on a 20°C ambient temperature measured at

the fresh air inlet.

Based on cooling water supplied at 2 GPM (7.6 LPM), 16°C for nitrogen atmosphere units.

Uniformity figures are based on a nine-point test conducted in an empty oven with thermocouples connected at 3 inches (7.6 cm) from walls after the oven temperature has reached stabilization. Uniformity can vary slightly depending on unit and operating conditions. Class 100 HEPA filtration will limit ramp rates.

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

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

SAFETY Stackable LCC/LCD 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 1.1

2. Safety

2.1. Safety Information

Do not work on the Stackable LCC/LCD Oven without reading and understanding this section which contains important information and warnings. Ignoring these warnings can result in death, serious injury or damage to the machine and product.

2.1.1. Lockout

Machine lockout places the Stackable LCC/LCD Oven into a zero energy state and prevents accidental machine start up. Always follow the Lockout Procedure described in this Section before cleaning, maintaining or repairing the Stackable LCC/LCD Oven. An accidental start-up, while working on the Stackable LCC/LCD Oven, can result in serious injury or death.

2.1.1.1. Lockout Requirements

1. Every power source that can energize any element of the Stackable LCC/LCD Oven must be

shut off at the closest possible power source. This includes air, water and electricity, including the Disconnect Switch.

2. After energy sources are locked out, test to ensure circuits are de-energized.

2.1.1.2. Lockout Procedure

Personnel authorized to lockout equipment must have the necessary locks to perform the lockout.

1. Physically disconnect all electrical power to the machine or lockout the appropriate breaker

or disconnects.

2. Close all valves and bleed off any pressure.

3. Test for power by attempting a start with the machine controls.

4. Identify the Lockout Condition with a tag on the electrical disconnect and pneumatic shut off

valve.

5. When work is complete, remove all tags and restore the machine to its working state.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD 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 1.1 13

2.1.2. Door and Panel

The door and rear panel on the Stackable LCC/LCD Oven protect against hazards. Power is required to open the door and the oven heater is OFF when the door is open. Operation without these safety devices in place creates hazards that the doors and covers are intended to render safe for personnel.

The door requires a Manual Override Key for use when power is off. The door and panel that require a tool to open are part of the safety system of the Stackable LCC/LCD Oven. Do not open the door while the machine is running.

2.2. Maintenance

Only qualified and trained personnel should perform maintenance or repair.

2.3. Electrical Power

Only qualified and trained personnel should perform electrical maintenance or electrical repair.

 Before performing maintenance, disconnect all electrical power from the machine. Use a

padlock and lockout all disconnects feeding power to the machine.

 Never clean, or repair the oven when in operation.  Unauthorized alterations or modifications to Stackable LCC/LCD Oven are strictly forbidden.

Never modify any electrical circuits. Unauthorized modifications can impair the function and safety of the Stackable LCC/LCD Oven.

2.4. Fire

Keep the Stackable LCC/LCD Oven clean and free of scrap materials, oil or solvents to prevent the possibility of fire. In the event of fire, use a fire extinguisher as follows.

1. De-energize the machine immediately by turning OFF the DISCONNECT SWITCH.

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

3. Extinguish the fire.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

SAFETY Stackable LCC/LCD 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!

14 Version 1.1

2.5. Equipment Lockout Requirements

To prevent injury or equipment damage during inspection or repair, the Stackable LCC/LCD Oven must be locked out.

2.5.1. Emergency Stop

When a risk of personal injury or damage to the Stackable LCC/LCD Oven exists, turn OFF the

DISCONNECT SWITCH on the front of the oven. This shuts off all electrical power to the oven.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD Oven Owner’s Manual THEORY OF OPERATION

Danger!

Use care when working with nitrogen. Nitrogen presents an asphyxiation hazard. Handle nitrogen according the safe handling procedures listed in the material safety data sheet.

7

Figure 1. Stackable LCC/LCD Series Oven.

Version 1.1 15

3. Theory of Operation

3.1. The Stackable LCC/LCD Series Oven

The Stackable LCC/LCD Series Oven (Figure 1) offers HEPA (High Efficiency Particulate Air) filtration for processes where minimized contamination is essential. The removable HEPA filter is designed to provide a constant flow of 99.97% clean air to the product being heated. The HEPA filter with silicone seal provides 99.99% filtration.

The oven operator interface is located on the hinged control panel at the front of the oven (Figure 1). Power components are located on the equipment panel, behind the hinged control panel, for easy access (Figure 8). Electrical components are either touch-proof or are shielded with Lexan7 material to prevent accidental exposure during maintenance and troubleshooting.

The cooling fan is controlled on/off by an event relay in the Protocol 3 Control. The cooling fan is used for rapid cool-down at the end of the process cycle, or to maintain low temperature setpoints during process cycle. It may also be turned on at the start of a process cycle to assure that starting temperature is less than 70°C.

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

The oven has a type 304-2B stainless steel interior and a type 304-#4 stainless steel interior. All interior seams are continuously welded on the insulation side. This protects the work chamber from contaminated air and permits chamber washing without damaging the insulation. Interior

Trademark of SABIC Innovative Plastics.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

THEORY OF OPERATION Stackable LCC/LCD Oven Owner’s Manual



Stackable units are available in air or nitrogen atmosphere models. Nitrogen atmosphere models are noted with an N suffix. Model numbers beginning with “LL*1-*” do not use a HEPA filter.

Figure 2. Protocol 3 Operator Interface.

16 Version 1.1

ductwork may be easily removed for cleaning. Heater frame, fan wheel and motor shaft are constructed of stainless steel.

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

The LCC/LCD series design offers a stackable oven body. Multiple oven systems of two or three oven stack options are available. When operating multiple ovens, network the Despatch Protocol 3 controllers together with a Modbus communication option. Use the optional Despatch Protocol Manager software to enable customer PC control of multiple ovens.

3.2. The Protocol 3 Controller

The Protocol 3 is a microprocessor based digital temperature controller designed for simple and flexible oven operation (Figure 2). The Protocol 3 controller operates as a dual-functioning controller/high limit instrument. The control portion utilizes a time-proportioning voltage signal to control heating devices with minimal temperature fluctuations.

The high limit portion protects the product and/or the oven from overheating. If the product being processed has a critical high temperature limit, the high limit setpoint should be set to a temperature somewhat below the temperature at which the product could be damaged. If the product does not have a critical high temperature limit, the high limit setpoint should be set 5 to 15 degrees higher than the maximum programmed setpoint at which the oven will operate.

The Protocol 3 controller provides three primary operating modes:

 Manual: Oven operates continuously at a fixed temperature until turned off.  Timer: Oven operates at a fixed temperature for a user-selected time period, and then

automatically turns off.

 Profile: Temperatures

increase or decrease as defined by 255 segments that can be allocated to 64 ramp and soak profiles. The profiles can be linked to provide additional temperature combinations.

Review the Protocol 3 Controller

Owner’s Manual for more

information.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD Oven Owner’s Manual THEORY OF OPERATION



Each LCC/LCD oven uses one of two types of HEPA filters,

depending on the oven’s maximum temperature. Ovens that can

be heated to 260°C (500°F) use the Standard HEPA filter. Ovens that can be heated to 350°C (662°F) use the High-Temperature HEPA filter.

However, customers requiring a higher ramp rate while operating equipment below 260°C (500°F) may still choose to use the high-temperature HEPA filter:

 Standard HEPA filter ramp rate: 1.25°C (34.25°F)/minute  High-Temperature HEPA filter ramp rate: 5°C

(41°F)/minute



LCC oven chamber temperature transitions must not exceed

1.5°C/minute to maintain class 100 chamber conditions. For ramp rates greater than 1.5°C/minute and up to 5°C/minute, the LCD model will maintain class 100 chamber conditions.

THIS SIDE UP

Figure 3. This Side Up Graphic.

Version 1.1 17

3.3. HEPA Filters

The Stackable LCC/LCD Ovens use HEPA (High Efficiency Particulate Air) filters limit particulate size in 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).

3.3.1. Definitions

 Binder: Organic substance used in filter construction to provide the media with structural

strength

 Burn-Off: Process for eliminating the binder and D.O.P. contained in the filter from the

manufacturing and testing function.

 D.O.P.: Dioctyl Phthalate - Aerosol particles of submicron size used in testing phase to spot

defects or measure filter efficiency.

 HEPA: High Efficiency Particulate Air

Filter Packaging, Shipping and Handling

Packaging practice varies among the filter unit manufacturers. Filter units are typically packaged in cardboard cartons with varying approaches for strengthening the container and making it impactresistant. Shipping cartons are typically marked with a vertical arrow and "This Side Up" (Figure 3). A filter unit is placed in the carton so the pleated folds are vertical (running from top to bottom), versus side to side.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

THEORY OF OPERATION Stackable LCC/LCD Oven Owner’s Manual

Caution!

Despatch does not recommend D.O.P. filter testing.



Ship, handle, store and install HEPA filters with pleats positioned vertically. Horizontally-positioned pleats risk breaking at the adhesive line of the filter medium. Horizontally-positioned pleats also collect

entrapped material on “shelves.” The accumulated weight of the

entrapped material may cause sag and lead to early failure of the filter unit.

18 Version 1.1

The filter is typically shipped in the original carton or package provide by the filter manufacturer. This carton or package provides good storage and maximum protection from dirt and moisture. Store and move HEPA filters upright in the shipping carton. Minimize handling of the filter. During installation, remove the filter from the shipping carton and install directly into the oven.

If an unpackaged HEPA filter unit must be placed with its face on the floor or other surface, clear the surface entirely of every object or irregularity which might damage the filter pack.

3.3.2. HEPA Filter Validation Testing

Despatch Industries guarantees the HEPA filters will meet specified efficiency ratings when the following recommendations are followed:

 The filter is properly installed  The filter is run at or below 200°C, at a constant temperature  The filter is run before burn-in

3.3.2.1. D.O.P. Testing

D.O.P. testing uses aerosol particles of submicron size to spot defects or measure filter efficiency. Degenerative by-products of this test are distributed throughout the oven chamber upon heat-up. Despatch does not recommend D.O.P. filter testing.

3.3.2.2. Class 100 Testing

Despatch guarantees a Class 100 environment within the oven. This classification is based on measurement of the particulate level within the oven work chamber.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD Oven Owner’s Manual THEORY OF OPERATION Version 1.1 19

Class 100 testing may be performed before or after a proper filter burn-in procedure has been performed. Despatch guarantees Class 100 condition measurements based on two methods of test. The direct method employs an extraction-type particulate analyzer. The indirect method involves particle settling over a specified period of time onto a clean disk.

3.3.2.3. Validation Testing

Despatch recommends the following test sequence for pharmaceutical Class 100 ovens.

1. Proper installation of the HEPA filters (Section 0).

2. Ambient air challenge to determine integrity of oven chamber and filter gaskets.

3. Proper filter burn-off procedure.

4. Class 100 testing inside the work chamber.

3.3.2.4. HEPA Filter Burn-off Process Not Necessary

HEPA filters contain a binder material which protects the filter media during production and shipping. Smoke produced from burning this binder at elevated temperatures is undesirable during normal oven operation. Burning off the binder will ensure a clean process at elevated temperatures. However, when the binder is burned out of the filter media, the filter becomes very fragile: too fragile to withstand normal shipping and handling. For this reason, Despatch does not perform the burn-off procedure. The burn-off process is not necessary at temperatures under 200°C.

3.3.3. HEPA Filter Unit Replacement

Periodic replacement the HEPA filter unit due to:  Resistance, or pressure drop, across the filter unit. Maximum level of resistance in inches

(water gauge) will vary depending upon the operation of the filter and the available fan capacity. Adequate fan capacity must be available.

 Loss of efficiency (leakage), determined from air-sampling measurements made downstream

of the filter unit.

 Visible damage or rupture of the filter media in a unit.  Change in process application.  Excessive build-up of lint or combustible particulate matter on the filter unit.  Water droplets in airstream through filter, free water (RH = 100%), will saturate filter very

quickly and may cause burnout or holes in burned off filter media.

 High level of radiation in the vicinity of the filter unit.

3.3.4. HEPA Filter: Magnehelic Pressure Gauge

The LCC Series oven is equipped with a Magnehelic pressure gauge which measures the pressure in front of the HEPA filter (Figure 4). As the filter becomes dirty, pressure increases. Despatch

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 Stackable LCC/LCD Oven Owner’s Manual

A B C D E

F

Date

Comments

Pressure (inches of water)8

Pressure with: 150 SCFH (LCC1-

16); 200 SCFH (LCC1-51) nitrogen purge9

Pressure with: 75 SCFH (LCC1-

16); 150 SCFH (LCC1-51) nitrogen

maintain9

Oven Temperature

Typical Values

2-3”

1.5-2” above value in Column C

0.5-1” above value in Column C

60°C

Filter first installed

8

9

Figure 4. Magnehelic Pressure Gauge Measures Pressure in front of

the HEPA filter.

20 Version 1.1

recommends changing the filter when the pressure is 1” w.c. greater than when the filter was first installed (Refer to section 4.3 for filter replacement).

Since pressure can be affected by many factors involved in the installation, it is important to record the pressure of a new filter as a baseline. Recorded pressure readings allow for new readings to be periodically checked against this baseline. Use Table 2 for recording this information (See Section 8.1 for a blank worksheet).

For a nitrogen atmosphere oven, pressure readings also give an indication of the integrity of the seals. If the pressure recorded in Columns D or E decrease over time, inspect the oven seals.

Table 2. HEPA Filter Pressure Reading Worksheet.

With Purge and Maintain valves off for a nitrogen atmosphere oven. Cooling fan off for an air

atmosphere oven.

For a nitrogen atmosphere oven only.

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Stackable LCC/LCD Oven Owner’s Manual ASSEMBLY & SETUP

Warning!

The LCC door requires a Manual Override Key for use when power is OFF. The door and panel that require a tool to open are part of the safety system of the Stackable LCC/LCD Oven. Do not attempt to permanently mount the Manual Override Key.



Do not remove torx screw from door release mechanism. Manual Override Key cannot be permanently mounted.

Figure 5. Door Lock Manual Override Key (LCC/LCD/LLC/LLD).

Version 1.1 21

4. Assembly & Setup

Assembly and Setup provides directions for unpacking and installing your LCC/LCD.

4.1. Unpack & Inspect The LCC/LCD Oven

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

 Note whether the carton and plastic cover sheet inside carton are still in good condition  Observe all outside surfaces and corners of the oven for scratches and dents  Check oven controls and indicators for normal movement, bent shafts, cracks, chips or

missing parts such as knobs and lenses

 Check the door and latch for smooth operation (Figure 5)  Check the filter carton for damage

All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.

Despatch LCC-LCD-4 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Revision History

Table of Contents

Figures

Tables

1. About This Manual

1.1. Important User Information

Copyright © 2012 by Despatch Industries.

1.2. Manufacturer & Service

1.3. Organization of this Manual

1.4. Conventions

1.5. Specifications

1.5.1. Model Numbering and Naming Conventions

Table 1. Model Number Key.

1.5.2. Dimensions

1.5.3. Capacities

1.5.4. Power

1.5.5. Temperature

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

2.3. Electrical Power

2.4. Fire

2.5. Equipment Lockout Requirements

2.5.1. Emergency Stop

3. Theory of Operation

3.1. The Stackable LCC/LCD Series Oven

3.2. The Protocol 3 Controller

3.3. HEPA Filters

3.3.1. Definitions

3.3.2. HEPA Filter Validation Testing

3.3.2.1. D.O.P. Testing

3.3.2.2. Class 100 Testing

3.3.2.3. Validation Testing

3.3.2.4. HEPA Filter Burn-off Process Not Necessary

3.3.3. HEPA Filter Unit Replacement

3.3.4. HEPA Filter: Magnehelic Pressure Gauge

Table 2. HEPA Filter Pressure Reading Worksheet.

4. Assembly & Setup

4.1. Unpack & Inspect The LCC/LCD Oven