Cascade Sciences CVO-2-HT User manual

Vacuum Ovens
CVO-2-HT CVO-5-HT
Installation - Operation Manual

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Pictured on front cover left to right: CVO-2-HT, CVO-5-HT

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Vacuum Ovens
110 – 120 Volts
CVO-2-HT CVO-5-HT
Part Number (Manual): 4861821
Revision: July 13, 2018

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TABLE OF CONTENTS
CERTIFICATIONS .......................................................................................................................................................7
UNIT SPECIFICATIONS ............................................................................................................................................ 9
Temperature ............................................................................................................................................................................9
Power.........................................................................................................................................................................................9
Weight...................................................................................................................................................................................... 10
Dimensions............................................................................................................................................................................. 10
Capacity .................................................................................................................................................................................. 10
Shelf Capacity by Weight................................................................................................................................................... 10
Vacuum .................................................................................................................................................................................... 11
INTRODUCTION .......................................................................................................................................................13
Read this Manual.................................................................................................................................................................. 13
Contacting Assistance ........................................................................................................................................................ 13
Engineering Improvements................................................................................................................................................ 13
Vacuum Supply Required .................................................................................................................................................. 14
Gaskets ................................................................................................................................................................................... 15
RECEIVING YOUR OVEN ........................................................................................................................................17
Inspect the Shipment............................................................................................................................................................17
Orientation.............................................................................................................................................................................. 18
Record the Data Plate Information.................................................................................................................................. 21
INSTALLATION ........................................................................................................................................................ 23
Installation Procedure Checklist ..................................................................................................................................... 23
Required Ambient Conditions.......................................................................................................................................... 24
Required Clearances.......................................................................................................................................................... 24
Power Source Requirements ........................................................................................................................................... 25
General Power Safety ........................................................................................................................................................ 26
Lifting and Handling ........................................................................................................................................................... 26
Leveling...................................................................................................................................................................................27
Install the Oven .....................................................................................................................................................................27
Installation Cleaning............................................................................................................................................................27
Shelving Installation............................................................................................................................................................ 28
Connect to the Vacuum Supply ...................................................................................................................................... 30
GRAPHIC SYMBOLS ................................................................................................................................................31
CONTROL OVERVIEW ............................................................................................................................................ 33
OPERATION.............................................................................................................................................................. 35
Safety Guidelines ................................................................................................................................................................ 35
Operating Precautions....................................................................................................................................................... 36
Theory of Operation ............................................................................................................................................................37
Put the Oven into Operation ............................................................................................................................................ 39
Set the High Temperature Limit ....................................................................................................................................... 41
Put the Chamber Under Vacuum ................................................................................................................................... 42
Setting the Constant Temperature Set Point .............................................................................................................. 43
Heating Profiles ................................................................................................................................................................... 43
High Temperature Limit Activated ................................................................................................................................. 44
Change Unit of Measurement ......................................................................................................................................... 45
Vacuum Gauge Operations ............................................................................................................................................. 46
Maximum Obtainable Vacuum.........................................................................................................................................47
Pressure Units Conversion Chart.....................................................................................................................................47
Data Port................................................................................................................................................................................ 48
USER MAINTENANCE............................................................................................................................................. 49
Cleaning and Disinfecting................................................................................................................................................. 49
Maintaining Atmospheric Integrity ................................................................................................................................. 50

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Electrical Components....................................................................................................................................................... 50
Vacuum Pump Maintenance............................................................................................................................................ 50
Storage...................................................................................................................................................................................50
Calibrate the Temperature display................................................................................................................................. 51
Unlocking the Temperature Controller ......................................................................................................................... 55
Diagnostic Questionnaire - Heating Issues ................................................................................................................. 58
Diagnostic Questionnaire – Vacuum Leak Issues..................................................................................................... 63
REPLACEMENT PARTS .......................................................................................................................................... 69
Replacement Gaskets........................................................................................................................................................ 70

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TABLE OF CONTENTS

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CERTIFICATIONS
This certificate satisfies NRTL safety requirements
TÜV SÜD CUE
Certificate Number: U8 17 09 64872 085
These units are CUE listed by TÜV SÜD as vacuum ovens for appropriate professional, industrial, or
educational use. TÜV SÜD America Inc. is an OSHA recognized NRTL and a Standards Council of
Canada accredited certification body.
These units have been tested to the following requirements:
CAN/CSA C22.2 No. 61010-1:2012
CAN/CSA C22.2 No. 61010-2-010/R:2009
UL 61010-1:2012
UL 61010A-2-010:2002
EN 61010-1:2010
EN 61010-2-010:2003
These units CUE certified under the model names SVAC2 and SVAC4.

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CERTIFICATIONS

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UNIT SPECIFICATIONS
These are 110 – 120 volt units. Please refer to the oven data plate for individual electrical specifications.
Technical data specified applies to units with standard equipment at an ambient temperature of 25°C and
at nominal voltage. The temperatures specified are determined in accordance to factory standard following
DIN 12880 respecting the recommended wall clearances of 10% of the height, width, and depth of the inner
chamber. All indications are average values, typical for units produced in the series. We reserve the right to
alter technical specifications at all times.
TEMPERATURE
Range, Stability, and Uniformity
Model Range Stability Uniformity
CVO-2-HT Ambient +20°to 220°C ± 0.2°C @ 150°C ±6% of Set Point
CVO-5-HT Ambient +20°to 220°C ± 0.25°C @ 150°C ±6% of Set Point
The maximum temperature is dependent on the type of door gasket installed. The oven comes with a
silicon gasket installed that is rated to 230°C. See page 70 for the temperature ranges of other gasket
types.
Time to Temperature: From an ambient temperature of +20°C.
Model Heat Up to 80°C Heat Up to 150°C Heat Up to 220°C
CVO-2-HT 70 Minutes 120 Minutes 175 Minutes
CVO-5-HT 70 Minutes 120 Minutes 175 Minutes
POWER
Model AC Voltage Amperage Frequency
CVO-2-HT 110 – 120 10 50/60 Hz
CVO-5-HT 110 – 120 13 50/60 Hz

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UNIT SPECIFICATIONS
WEIGHT
Model Shipping Weight Unit Weight
CVO-2-HT 218 lb / 99 kg 179.0 lb / 81.2 kg
CVO-5-HT 452 lb / 205 kg 360.0 lb / 163.3 kg
DIMENSIONS
Inches
Model Exterior W × D × H Interior W × D × H
CVO-2-HT 20.5 x 29.5 x 26.3 12.0 x 20.0 x 12.0
CVO-5-HT 26.5 x 34.5 x 32.3 18.0 x 24.0 x 18.0
Millimeters
Model Exterior W × D × H Interior W × D × H
CVO-2-HT 521 x 750 x 667 304 x 508 x 304
CVO-5-HT 673 x 876 x 819 457 x 610 x 457
CAPACITY
Model Cubic Feet Liters
CVO-2-HT 1.67 47.2
CVO-5-HT 4.50 127.4
SHELF CAPACITY BY WEIGHT
Model Per Shelf Max Total Load Max No. Shelves
CVO-2-HT 35.0 lb / 15.8 kg* 105.0 lb / 68.0 kg** 3 Shelves
CVO-5-HT 35.0 lb / 15.8 kg* 105.0 lb / 102.0 kg*** 6 Shelves
*35 lb / 15.8 kg with weight evenly distributed across the shelf.
**105 lb / 68 kg total load for the CVO-2-HT. Exceeding this limit risks damaging the chamber liner.
***105 lb / 102 kg total load for the CVO-5-HT. Exceeding this limit risks damaging the chamber liner.

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UNIT SPECIFICATIONS
VACUUM
All Ovens
Operational Vacuum Range
inHg mmHg kPa bar
-3.0 to -29.9 -76 to -760 -10 to -101 -0.1016 to -1.0125
Vacuum Display Range
inHg mmHg kPa bar
0.0 to -29.9 37.5 to - 757 5 to -101 0.05 to -1.013
Lowest Rated Chamber Pressure
24 mTorr at 150°C
Leak Rate
Less than 1 mTorr per 30 minutes @ ambient temperature

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UNIT SPECIFICATIONS

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INTRODUCTION
READ THIS MANUAL
Failure to follow the guidelines and instructions in this user manual may create a protection impairment
by disabling or interfering with the unit safety features. This can result in injury or death.
Before using the unit, read the manual in its entirety to understand how to install, operate, and maintain
the unit in a safe manner. Keep this manual available for use by all end-users. Ensure all end-users are
given appropriate training before the unit begins service.
Intended Applications and Locations
These ovens are engineered for drying, curing, and baking applications under vacuum in professional,
industrial, and educational environments. The ovens are not intended for use at hazardous or household
locations.
CONTACTING ASSISTANCE
Phone hours for Technical Support are 6 am – 4:30 pm Pacific Coast Time (west coast of the United
States, UTC -8), Monday – Friday. Please have the following information ready when calling or emailing
Technical Support: the model number and the serial number (see page 21).
PHONE: [phone] or 503-847-9047
6725 NE Evergreen Pkwy
Ste 106
Hillsboro, OR 97124
ENGINEERING IMPROVEMENTS
Cascade Sciences continually improves all of its products. As a result, engineering changes and
improvements are made from time to time. Therefore, some changes, modifications, and improvements
may not be covered in this manual. If your unit’s operating characteristics or appearance differs from
those described in this manual, please contact your oven dealer or customer service representative for
assistance.

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INTRODUCTION
VACUUM SUPPLY REQUIRED
These ovens require a vacuum source. The oven does not come with a vacuum pump.
Use of an oil trap plumbed on the vacuum line between the oven and the pump is strongly
recommended. The trap protects the pump from any oils outgassed during your baking application or
procedure. This extends the life of the pump. All maintenance and instructional information should be
obtained from the pump manufacturer if it was not shipped with the pump.
Mounting studs and an electrical outlet for powering a vacuum pump are installed in the cabinet inside
the base of the oven. See the Connect to the Vacuum Supply entry in the Installation section (page
30) for more information on the oven vacuum plumbing.
Minimum Pump Evacuation Rate
For the chamber to seal, the vacuum pump must be able to evacuate at least 1 cubic foot per minute
(cfm) for each cubic foot of oven chamber volume (CuFt).
In other words, 1 pump cfm per oven chamber CuFt.
Model Chamber Capacity Min. Pump Capacity CFM Min. Pump Capacity LPM
CVO-2-HT 1.67 CuFt 2 cfm 57 Liters per Minute
CVO-5-HT 4.50 CuFt 5 cfm 142 Liters per Minute
To seal completely, the oven chamber must be under a minimum vacuum of:
inHg mmHg kPa bar
-3.0 -76 -10 -0.1016
Vacuum Pump
Building Vacuum Supply

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INTRODUCTION
GASKETS
Gaskets are non-warranty, high-wear consumable items subject to compression forces, heat,
and outgassed byproducts. Heavy usage rates may necessitate frequent replacements. The
manufacturer strongly recommends keeping a spare gasket on hand during operation.
Each oven comes with a replaceable silicon gasket installed on the chamber liner. This
gasket seals against the chamber door to maintain the vacuum integrity of the chamber. The
gasket must be replaced periodically and is rated to 230°C. It is vulnerable to acids and
solvents. The manufacturer also offers for sale Viton®, fluorosilicone, and Buna gaskets. See
page 70 for information on gasket type suitability for baking applications.
These ovens do not require vacuum grease.

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INTRODUCTION

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RECEIVING YOUR OVEN
INSPECT THE SHIPMENT
•When a unit leaves the factory, safe delivery becomes the responsibility of the carrier.
•Damage sustained during transit is not covered by the manufacturing defect warranty.
•Save the shipping carton until you are certain that the unit and its accessories function properly.
When you receive your unit, inspect it for concealed loss or damage to its interior and exterior. If you
find any damage to the unit, follow the carrier’s procedure for claiming damage or loss.
1. Carefully inspect the shipping carton for damage.
2. Report any damage to the carrier service that delivered the unit.
3. If the carton is not damaged, open the carton and remove the contents.
4. The unit should come with an Installation and Operation Manual and a controller
programming guide.
5. Verify the correct number of accessories has been included.
6. Carefully check all packaging for loose accessories before discarding.
Included Accessories:
CVO-2-HT Tall Shelves Short Bottom Shelf Power Cord Leveling Feet
2 1 1 4
CVO-5-HT Shelves Shelf Clips Power Cord Leveling Feet
3 12 1 4

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Figure
1: CVO-5-HT
RECEIVING YOUR OVEN
ORIENTATION
Back of Unit: See page 20
Main Control Panel
Vacuum Control Panel and Display
Chamber Door
Chamber
Gasket Seal
Oven Chamber
Shelf Standard Rail
Temperature
Sensor Probe

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Figure
2: CVO-2-HT
RECEIVING YOUR OVEN
Temperature
Probe
Tall Shelf
Access Port
(KF-25 Fitting)
Tall Shelf
Chamber Door
Back of Unit: See page 20
Chamber
Gasket Seal
Main Control Panel
Vacuum Control
Panel and Display
Short Shelf

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RECEIVING YOUR OVEN
Back of Ovens
KF-25 Vacuum Port (Includes Blank and Clamp, not pictured here)
Vacuum Port, 3/8
inch (9.52 mm)
Chamber Vent
Inlet Port ¼
inch (6.35 mm)
Power Cord Inlet
Fuse Holder
Data Port, 9-Pin
RS485
Data Plate