Shellab SVAC4-2 User Manual

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VACUUM OVEN

SVAC1 SVAC1-2 SVAC2 SVAC2-2 SVAC4 SVAC4-2

Previously designated as

1425, 1425-2 1445, 1445-2 1465, 1465-2

INSTALLATION AND OPERATION MANUAL

Revised 6 / 2014

4861531

Sheldon Manufacturing Inc. P.O. Box 627 Cornelius, Oregon 97113

EMAIL: tech@Shellab.com INTERNET: http://www.Shellab.com/~Shellab

1-800-322-4897 (503) 640-3000 FAX (503) 640-1366

TABLE OF CONTENTS

SECTION 1.0 RECEIVING AND INSPECTION SECTION 2.0 GRAPHIC SYMBOLS SECTION 3.0 INSTALLATION SECTION 4.0 PRECAUTIONS SECTION 5.0 CONTROL PANEL OVERVIEW SECTION 6.0 VACUUM OPERATION SECTION 7.0 OPERATION SECTION 8.0 MAINTENANCE SECTION 9.0 TROUBLESHOOTING SECTION 10.0 PARTS LIST

UNIT SPECIFICATIONS SCHEMATICS REFERENCE INFORMATION APPENDIX

These units are TUV CUE listed as vacuum ovens for professional, industrial or educational use where the preparation or testing of materials is done at approximately atmospheric pressure and no flammable, volatile or combustible materials are being heated. 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 61010A-2-010:2002 UL 61010-1:2012 EN 61010-1:2010 EN 61010-2-010:2003

INTRODUCTION

Thank you for purchasing our product. We know that in today’s competitive market place, customers have many

choices when purchasing constant temperature equipment. We appreciate your choosing our quality product. Our continued reputation as a leading laboratory product manufacturer rests with each and every customer. Sheldon Manufacturing, Inc. stands behind our products and want to let you know we are here if you need us.

Before you use the unit, read this entire manual carefully to understand how to install, operate, and maintain the unit in a safe manner. Your satisfaction with the unit will be maximized as you read about its safety and operational features.

Keep this manual on-hand so it can be used by all operators of the unit. Be sure all operators of the unit are given appropriate training before you put the unit in service.

Note: Use the unit only in the way described in this manual. Failure to follow the guidelines and instructions in this

manual may be dangerous and illegal.

General Safety Considerations

Your oven and its recommended accessories have been designed and tested to meet strict safety requirements. For continued safe operation of your oven, always follow basic safety precautions including:

 Read this entire manual before using the oven.  Be sure you follow any city, county, or other ordinances in your area regarding the use of this unit.  Use only approved accessories. Do not modify system components. Any alterations or modifications to your

incubator may be dangerous and will void your warranty.

 Always plug the unit’s power cord into a grounded electrical outlet that conforms to national and local electrical

codes. If the unit is not grounded, parts such as knobs and controls may conduct electricity and cause serious injury.

 Do not connect the unit to a power source of any other voltage or frequency beyond the range stated on the

power rating on the data plate of the unit.

 Do not modify the power cord provided with the unit. If the plug does not fit an outlet, have a proper outlet

installed by a qualified electrician.

 Avoid damaging the power cord. Do not bend it excessively, step on it, place heavy objects on it. A damaged

cord can easily become a shock or fire hazard. Never use a power cord after it has become damaged.

 Do not position the equipment in such a manner as to make it difficult to disconnect power cord or coupler.  Do not attempt to move the unit while in operation or before the unit has been allowed to cool.

RECEIVING AND INSPECTION

Model Number

Serial Number

Part Number

Voltage

Section

IMPORTANT: READ THIS INSTRUCTION MANUAL IMMEDIATELY. Your satisfaction and safety require a complete understanding of this unit, including its proper function and

operational characteristics. Be sure operators are given adequate training before attempting to put unit in service. NOTE: This equipment must be used only for its intended application; any alterations or modifications will void your warranty.

1.1 Inspection: The carrier, when accepting shipment, also accepts responsibility for safe delivery and is liable for

loss or damage claims. On delivery, inspect for visible exterior damage. Note and describe on the freight bill any damage found and enter your claim on the form supplied by the carrier.

1.2 Inspect for concealed loss or damage on the unit itself, both interior and exterior. If any, the carrier will arrange for official inspection to substantiate your claim. Save the shipping crate until you are sure the unit has been delivered in good condition.

1.3 Return Shipment: If for any reason you must return the unit, contact your customer representative for authorization. Supply the complete data plate information when requesting return authorization. Please see the manual cover for information on where to contact customer service.

1.4 Accessories: Verify all of the equipment indicated on the Ship Kit list included with the unit. Carefully check all packaging before discarding. The model SVAC1 (1425) / SVAC1-2 (1425-2) is equipped with two (2) deep shelves and one (1) shallow shelf. The model SVAC2 (1445) / SVAC2-2 (144-25)is equipped with two (2) deep shelves, one (1) shallow shelf and four (4) adjustable feet. The model SVAC4 (1465) / SVAC4-2 (1465-2) is equipped with three (3) shelves and four (4) adjustable feet.

Recording Data Plate Information

Once you have determined the unit is free from damage, locate the data plate at the back of the unit. The data plate indicates your unit’s model number and serial number. Record this information below for future reference.

Table 1. Data Plate Information

GRAPHIC SYMBOLS

Symbol

Identification

Indicates that you should consult your operator’s manual for further instructions.

Indique que l'opérateur doit consulter le manuel d'utilisation pour y trouver les instructions complémentaires.

Indicates “Temperature”

Repère "température"

Indicates “Overtemperature Protection”

Signale un "dépassement de température"

Indicates “AC Power”

Repère "secteur AC"

Indicates "Vent Valve"

Indique “clapet de mise à l’air libre”

Indicates "Vacuum Gauge"

Indique “jauge de vide”

Indicates “Manually Adjustable”

Signale un élément "réglable manuellement"

Indicates “Potential Shock Hazard” behind partition

Signale un "risque potentiel d'électrocution" au-delà de la cloison.

Indicates “Unit should be recycled” (Not disposed of in land-fill)

Indique “l’appareil doit être recyclé“ (Ne pas jeter dans une décharge)

Section

Your oven has been provided with a display of graphic symbols which should help in identifying the use and function of the available user adjustable components.

INSTALLATION

Section

Local city, county, or other ordinances may govern the use of this equipment. If you have any questions about local requirements, please contact the appropriate local agency. Installation may be performed by the end user.

Under normal circumstances these units are intended for use indoors, at room temperatures between 15 and 35C, at no greater than 80% relative Humidity (at 25C) and with a supply voltage that does not vary by more than 10%. Installation category is CAT-II Pollution Degree 2. Customer service should be contacted for operating conditions outside of these limits.

3.1 Power Source: The unit power requirements are listed on the data plate. PLUG THE UNIT INTO A

3.2 Location: When selecting a site for the unit, consider conditions which may affect performance, such as heat

3.3 Lifting / Handling: These units are heavy and care should be taken to use appropriate lifting devices that are

3.4 Leveling: The unit must sit level and solidly. Models SVAC1 (1425) and SVAC1-2 (1425-2) have four (4) rubber

3.5 Cleaning: The unit chamber should be cleaned and disinfected prior to use. The operating conditions and

3.6 Shelves: See Figure below. Place items on shelves. DO NOT place items directly on the floor of the chamber.

PROPERLY GROUNDED AND RATED RECEPTACLE OF THE CORRECT STYLE. THE VOLTAGE OF THE RECEPTACLE SHOULD NOT VARY MORE THAN 10% FROM THE DATA PLATE RATING. A separate

circuit is recommended for this unit to prevent loss of product due to overloading or circuit failures caused by other equipment. Position the unit to allow user access to the power cord.

from radiators, ovens, autoclaves, etc. Avoid direct sun, fast-moving air currents, heating/cooling ducts, and high-traffic areas. To ensure air circulation, allow a minimum of 30 cm between the unit and any walls or partitions which might obstruct free air flow.

sufficiently rated for these loads. Units should only be lifted from their bottom surfaces. Doors, handles and knobs are not adequate for lifting or stabilization. The unit should be completely restrained from tipping during lifting or transport. All moving parts such as shelves and trays should be removed and doors need to be positively locked in the closed position during transfer to prevent shifting and damage.

feet that are already attached to the unit and are not adjustable. Leveling feet are supplied with models SVAC2 (1445) / SVAC2-2 (144-25) and SVAC4 (1465) / SVAC4-2 (1465-2) and must be installed in the four holes at the base of the unit. With the unit standing upright, turn the leveling feet counterclockwise to raise the level of that corner. Adjust each foot until the unit stands solid and level. If the unit must be moved, turn the leveling feet in all the way to prevent damage while moving.

appropriate protocol will determine the correct procedure for decontamination. A typical decontamination procedure that is adequate for many situations has been described below. As well, certain steps are listed that will help reduce the likelihood of contamination and the necessity of decontamination. Whatever process is appropriate, it needs to be done on a regularly scheduled basis. Depending on usage and protocol, this may be monthly, quarterly or otherwise. Regardless of the decontamination procedure used, certain precautions will need to be taken:

A. Always disconnect the unit from the electrical service when cleaning.

Assure all volatile or flammable cleaners are evaporated and dry before reconnecting the unit to the power supply.

B. Special care should be taken when cleaning around sensing heads to prevent damage. C. Do not use chlorine-based bleaches or abrasive cleaners this will modify the stainless steel interior

finish. DO NOT USE hard tools such as metal wire brushes or steel wool. Use non-abrasive cleaners and soft tools such as plastic brushes.

D. In the event hazardous material is spilled onto or into the equipment, appropriate decontamination

must be carried out. If there is any doubt about the compatibility of decontamination or cleaning agents with parts of the equipment or with material contained, please contact the manufacturer or his agent. No decontamination or cleaning agents should be used which could cause a hazard as a result of a reaction with parts of the equipment or with the material contained in it.

PRECAUTIONS

Section

NOTE: THIS IS NOT AN EXPLOSION PROOF OVEN

4.1 The bottom surface of the chamber should not be used as a work surface.

4.2 Do not place or use explosive, combustible, or flammable materials in the oven.

4.3 Do not use sealed containers in the oven chamber.

4.4 Do not modify the power cord provided with the unit. If the plug goes not fit an outlet, have a proper outlet

installed by a qualified electrician.

4.5 Removal of any service panel or disconnect the unit from the electrical power source before attempting any repairs or component replacements should be done by approved trained service personel..

4.6 If a mercury thermometer is used and breakage should occur, make sure all the spilled mercury is removed from the chamber.

4.7 This oven is NOT suitable for use in Class I, II, or III locations as defined in the National Electric Code of the United States of America, NFPA 70.

4.8 This oven is not intended, nor can it be used, as a patient connected device.

CONTROL PANEL OVERVIEW

SVAC1 (1425) & SVAC1-2 (1425-2)

SVAC2 (1445) & SVAC2-2 (1445-2) SVAC4 (1465) & SVAC4-2 (1465-2)

Watlow EZ-Zone Control

20.0

RESE T

EZ1

EZ2

CURRENT OVEN CHAMBER

TEMPERATURE

TEMPERATURE SET

POINT (YOUR DESIRED

TEMPERATURE)

INDICATES THAT THE

CONTROLLER IS POWERING THE

OVEN’S HEATER

RAMPING SYMBOL INDICATES

THAT A HEATING PROFILE IS

RUNNING

THE ADVANCE KEY SCROLLS

THROUGH MENUS AND

PARAMETER LISTS

THE DOWN ARROW KEY

ADJUSTS SET POINTS OR

CHANGES PARAMETERS

THE UP ARROW KEY

ADJUSTS SET POINTS

OR CHANGES PARAMETERS

THE RESET KEY

SCROLLS 1 PAGE BACK

THE EASY ZONE KEY 1

INITIATES AND ENDS

HEATING PROFILES

Watlow Controller Details

On some older Watlow Controllers the Reset button may be labeled with an infinite ∞ symbol rather than RESET.

Section

5.1 POWER SWITCH: This is the main power I/O (On/Off) switch. It must be in the ON position before any

systems are operational.

5.2 MAIN TEMPERATURE CONTROL: Tthe Main Temperature control is a Watlow EZ-Zone Controller consisting of the digital display and UP/DOWN arrow pads for adjusting set point temperatures and calibration, and four buttons for setting programs and parameters.

5.3 HEATING LIGHT: This green indicator light is on whenever the MAIN TEMPERATURE CONTROL has activated the heating elements to reach and maintain set point.

5.4 SET OVER TEMPERATURE: The Over Temperature Limit Control is completely independent of the MAIN TEMPERATURE CONTROLLER and guards against malfunctions which would allow temperature to rise past the Temperature set point. Setting adjustments for this control require a flat-edged tool to eliminate accidental changes. The control has a dial that is marked gradient scale and is adjustable across this scale. If the chamber temperature esxceeds over the set point, the Set Over Temperature will limit the rise to approximately 10C above the set point selected.

5.5 OVER TEMPERATURE LIGHT: This red indicator light is on whenever the temperature has exceeded the set point of the Over Temperature Limit Control and has activated and taken control of the oven. Under normal operating conditions this pilot light should never be on.

5.6 FUSE: Mounted on the rear wall next to the power cord, provides protection for the unit’s electrical circuitry against over current conditions. The fuse, when blown, must be replaced before the unit can continue operation. Match the fuse ratings with those on the fuse data plate.

5.7 VACUUM: This adjustment handle allows opening and closing of the vacuum valve to an external vacuum pump or system.

5.8 VENTILATION: This adjustment handle controls the amount of ventilation to the chamber as when using a purge gas. This valve must be closed (completely clockwise) when the unit is in the vacuum mode.

5.9 VACUUM GAUGE: This digital gauge indicates the chamber operating vacuum. Your unit may be equipped with either a SUNX or Autonics device.

See Appendix for instructions on how to set the “unit” scale.

VACUUM OPERATION

Section

6.1 The vacuum pump is the heart of your vacuum oven system. The selection of a vacuum pump is critical to match your overall performance expectations for time to evacuate the chamber and the maximum obtainable vacuum levels. As well, the type of pump should be considered depending on the material that will be placed in the chamber. Common types are Chemical Duty PTFE Dry, Standard Duty Dry, Compact DirectDrive, and other specialty pumps for Corrosive gases. Selection of application specific pumps can improve the overall oven performance as the right pump ensures cost effectiveness and minimizes pump maintenance.

In general, a dry pump with a pumping capacity of 100 l/min. can be used to evacuate 840 liters volume (0.84 cubic meters) in a reasonable time. High vacuum pumps based on oil sealed rotary vane technology use the rule of thumb of 1 to 1.5 times the volume of space to determine pumping capacity (300 liters volume needs a 300 to 350 l/min. pump). The reason for the differing rule on oil sealed pumps is that the evacuation needs to be below 10torr in less than 10-15 minutes to avoid poor lubrication and overheating the internal pumping mechanism. Oil-free piston pumps don’t overheat while evacuating larger chambers; however the time to maximum vacuum takes longer the smaller the pumping capacity.

6.2 IT IS IMPORTANT TO USE VACUUM TUBING FOR ALL THE VACUUM HOOKUPS. OTHER TYPES OF TUBING MAY COLLAPSE AND PREVENT COMPLETE EVACUATION.

6.3 To Apply Vacuum to the Chamber:

There are two ways to apply vacuum.

1. Attach the hose from the vacuum pump to the 3/8" hose connection on back of the oven. Close the VENTILATION valve (clockwise) and open the VACUUM valve. Latch the door shut and start the vacuum pump. This action will hold the door shut and against the gasket until the pump creates a vacuum in the chamber. Once a good vacuum seal is accomplished, the door will hold itself shut and sealed until the chamber is returned to ambient atmospheric pressure.

2. The unit is equipped with a KF-25 flanged 1” port. This can be used for faster, higher volume vacuum pump down. When the large port, close both the VENTILATION and VACUUM valves.

6.4 Watch the VACUUM GAUGE and when the required vacuum is obtained, close the vacuum valve and turn pump off. The digital vacuum gauge is factory set to display inches of mercury. The display will show 0—29.92 inch. If the vacuum exceeds 29.92, the display will show “_ _ _”. The 0 indication represents present atmospheric pressure. See Reference 2 for details for digital gauge settings.

6.5 Vacuum Release: To return the chamber to ambient atmospheric pressure, open the VACUUM valve very slowly and allow the chamber to re-pressurize. The speed of pressurizing can be controlled by how much the valve is opened.

OVEN OPERATION

REFERENCE

THERMOMETER

PROCESS

DISPLAY

OFFSET

CAL

152°C

150°C 2 148°C

150°C

-2

Section

NOTE: When starting a new oven, allow the oven to operate two hours at 150˚C. Slight vapor or smoke may occur in the initial heat-up. This is the dissipation of protective coatings that have been added to the oven elements.

7.1 Power Connection: Connect the service cord to a grounded outlet if supplied with a detachable cord set.

Switch the unit to the ON position.

7.2 Turn the Set Over Temperature control to its maximum position (clockwise).

7.3 Setting the Main Temperature Control

Video is also available for instructions “Quick Start-Shel lab Vacuum Oven Basics.”

http://www.shellab.com/store/virtual-tour-vac-oven.html

To set the main temperature controller, perform the following steps:

1. Turn the power switch to the ON position. The Power ON Light will illuminate along with the Watlow PM

Control.

2. Make sure the control is not running a program. If the Ramp Symbol is illuminated on the right side of the

display, that means there is a program running. To turn off the program, push the EZ Key once. The Ramp Symbol should go off, indicating the program has ended. Enter the desired set point.

7.4 Calibrating the Main Temperature: It is recommended that calibration is done once the unit is installed in its working

environment. The unit should be stable at set point for several hours and under vacuum. Once unit has been stable for several hours, compare process display with reference thermometer. After comparing the two figures out the calibration offset by subtracting the reference thermometer reading to the display reading. If the reference is greater than the display, it will be a positive number. If the reference is smaller than the display, it will be a negative number.

EXAMPLE:

Once the Offset Calibration Number is established, it can then be entered into the control. To enter into the control, push and hold both UP and DOWN Arrow Button simultaneously for three (3) seconds or until A1 appears in the Upper Display and Oper appears in the Lower Display. Then, push the Advance Key repeatedly unit I.CA appears in the Bottom Display and a number value in the Upper Display. This number value can be changed by using the UP or DOWN Arrow Buttons. Change the number value to the Offset Calibration Number established earlier. If it is a negative number, you subtract. If it is a positive number, you add. Once the Offset Calibration Number is entered, push the Infinite Button repeatedly to exit to Home Page. (Process Temperature Display Top and Set Point Display Bottom.)

7.5 Setting the Set Over Limit Temperature Control:

To set the Over Temperature Limit Control, perform the following:

1. The Over Temperature Limit Control should be initially set to its maximum position to allow the Main

Temperature Controller to stabilize.

2. Set Main Temperature Control to 1˚C above desired set point and allow to stabilize.

3. Turn the Over Temperature Limit Control counter-clockwise until the Over Temperature Light just

activated. Then, slowly turn the knob clockwise until the light goes out.

4. Return the Main Temperature Control back to desired set point.

5. This should set the Over Temperature Limit Control 1˚C above Main Temperature Control. If the Over

Temperature feature is being used, it is should be tested annually.

7.6 Digital Vacuum Gauge Setup: See Reference Section of the manual.

7.7 Ramp and Soak Settings: The Watlow EZ-Zone Controller is capable of 40-step ramp and soak

profiles (or 40 different files-with 10 steps per file). The program will ramp up to 150˚ from ambient condition and soak for 4 hours. For your programs, make sure enough time is entered in the ramp time, so the oven can reach set point before entering the soak step. See Reference Section of the manual for more information.

Video is also available for instructions “How to Program Ramp & Soak Profiles.”

http://www.shellab.com/store/virtual-tour-vac-oven.html

MAINTENANCE

Section

Warning: Prior to any maintenance or service on this unit, disconnect the power cord from the power supply.

Before reattaching the unit to its power supply, be sure all volatile and flammable cleaners are evaporated and dry.

Avertissement: Avant d'effectuer toute maintenance ou entretien de cet appareil, débrancher le cordon secteur

de la source d'alimentation. Avant de reconnecter l'appareil sur le secteur, s'assurer que tous les produits de nettoyage volatiles et inflammables sont complètement évaporés.

Cleaning

The unit chamber should be cleaned and disinfected prior to use. Periodic cleaning is required. To clean the incubator, perform the following steps:

1. Remove all of the interior parts, if assembled.

2. Clean the incubator with a mild soap and water solution, including all corners. DO NOT USE spray cleaners that

might leak through openings and cracks and get on electrical components, or that may contain solvents that will harm coatings. DO NOT USE chlorine-based bleaches or abrasives, as they will damage the stainless steel interior.

3. Rinse with distilled water and wipe dry with a soft cloth.

4. Special care should be taken when cleaning around the sensing heads to prevent damage.

Disinfecting

Disinfect the incubator on a regular basis. To disinfect the incubator, perform the following steps.

1. Remove all of the interior parts, if assembled.

2. Disinfect the incubator, including all corners and the access port, using a suitable disinfectant. Shelves and shelf

clips are autoclaveable. DO NOT USE spray disinfectants that might leak through openings and cracks and get on electrical components, or that may contain solvents, corrosives, or abrasives that will harm the stainless steel coatings. Special care should be taken when cleaning around sensing heads to prevent damage and around the door gasket so as not to impair the positive seal.

3. If a hazardous material/substance has been spilled in the unit, immediately initiate your site’s Hazardous Material

Spill Containment protocol. Contact your local Site Safety Officer and follow instructions per the policy and procedures established for your site.

4. There are many commercially available disinfectants available that are non-corrosive and non-abrasive and

suitable for use on stainless steel surfaces. Contact your local Site Safety Officer for detailed information for the proper disinfectants suitable for your operation.

Warning: Never clean the unit with alcohol or flammable cleaners and assure all volatile or flammable cleaners

are evaporated and dry before reattaching the unit to the power supply.

Avertissement: Ne jamais nettoyer l'appareil à l'alcool ou avec des nettoyants inflammables et veiller à ce que

les produits volatils ou inflammables soient entièrement évaporés avant de rebrancher le content d'alimentation de l'appareil.

Periodically inspect the door latch, trim, catch and gasket for signs of deterioration. Failure to maintain the integrity of the door system will shorten the life span of the incubator.

No maintenance is required on electrical components. If the incubator fails to operate as specified, please review the Troubleshooting Section prior to calling for service.

TROUBLESHOOTING AND SERVICE

TEMPERATURE

Temperature too high

1/ controller set too high 2/ controller failed on–call Customer Service 3/ wiring error–call Customer Service

Display reads "HI" or "400"+

probe is unplugged, is broken or wire to sensor is broken–call Customer Service

Chamber temperature spikes over set point and then settles to set point

Recalibrate to desired temperature set point

Temperature too low

1/ Set Over Temperature too low 2/ Main control set too low 3/ unit not recovered from door opening – wait for display to stop changing 4/ unit not recovered from power failure or being turned off 5/ element failure – see if Heating light is on 6/ Main controller failure – confirm with front panel lights that controller is calling for heat 7/ Set Over Temperature failure – confirm with front panel lights Set Over Temperature is operating correctly 8/ wiring problem–check all functions. If not solved-call Customer Service

Display reads "LO"

1/ if ambient room temperature is lower than range of unit–compare set points and ambient temperature to rated specifications in section 9.0, Unit Specifications. 2/ Main sensor is plugged in backwards–call Customer Service.

Unit will not heat over a temperature that is below set point

1/ confirm that Set Over Temperature Control set point is set above the Main Temperature set point. 2/ check calibration–using independent thermometer

Unit will not heat up at all

1/ verify that controller is asking for heat by looking for Heating light–if pilot light is not on continuously during initial start up, there is a problem with the controller-call Customer Service. 2/ do all controller functions work? 3/ is the Set Over Temperature Control set high enough?–for diagnostics, should be fully clockwise with the Over Temperature light never on 4/ has the fuse blown? Check fuse at inlet. 5/ Units will need at least some vacuum in chamber to keep unit air tight-verify with Vacuum Gauge is above “0”.

Indicated chamber temperature unstable

1/ ± 1. may be normal. 2/ is ambient room temperature radically changing–either door opening or room airflow from heaters or air conditioning ? –stabilize ambient conditions. 3/ calibration sensitivity–call Customer Service.

Section

4/ Controller set too low–be sure that it is more than 5 degrees over desired set point; check if Over Temperature light is on continuously; turn controller knob completely clockwise to see if problem solved then follow instructions in section 6.6 for correct setting. 5/ electrical noise–remove nearby sources of RFI including motors, arcing relays or radio transmitters.

Will not maintain set point

1/ assure that set point is at least 5 degrees over ambient room temperature 2/ see if ambient room temperature is fluctuating

Display and Reference thermometer don’t match

1/ calibration error-recalibrate. 2/ Main temperature sensor failure–evaluate if Heating light is operating correctly 3/ Main controller failure–evaluate if Heating light is operating correctly 4/ allow at least two hours to stabilize 5/ verify that reference thermometer is certified

Can't adjust set points or calibration

1/ turn entire unit off and on to reset 2/ if repeatedly happens-call Customer Service

Calibrated at one temperature, but not at another

This can be a normal condition when operating temperature varies widely. For maximum accuracy, calibration should be done as close to the set point temperature as possible.

MECHANICAL

Glass door not sealing

Check physical condition of gasket-replace if worn.

Outer door not sealing

1/ see if hinges are out of adjustment 2/ Confirm that unit has not been damaged and body out of square.

Oven won’t hold vacuum

1/ check door gasket for damage, wear or lack of compliance 2/ assure all vent and feed valves are closed tightly 3/ assure tight connections to pump

OTHER

Controller on at all times-"locked-up"

1/ turn unit off and on to reset 2/ if cannot change any condition on the front panel-call Customer Service

Wall fuse/circuit breaker is blown

1/ check wall power source 2/ see what other loads are on the wall circuit

Unit will not turn on

1/ check wall power source 2/ check fuse/circuit breaker on unit or in wall 3/ see if unit is on, e.g., heater, and just controller is off 4/ check all wiring connections, esp. around the on/off switch.

Unit is smoking–Out of box

This is common during initial operation. Put unit under vent and run at full power for two hours.

Contamination in chamber

1/ see cleaning procedure in operator’s manual 2/ develop and follow standard operating procedure for specific application; include definition of cleaning technique and maintenance schedule

SERVICE

If this product should require service, contact Customer Service (800) 322-4897 or tech@Shellab.com. If return of the product is necessary, an authorization number must be obtained and the product shipped according to your representative, to the proper service center. To insure prompt handling, the return authorization number should be placed on the outside of the package or container. Make sure a detailed explanation of the reason for return is enclosed with the item.

PARTS LIST

Description

100-120V

220-240V

Controller Knob

4450506

Outer Door Glass SVAC1 (1425) & SVAC1-2 (1425-2) SVAC2 (1445) & 1445-2 SVAC4 (1465) & SVAC4-2 (1465-2)

3550522 3550521 3550523

Door Glass SVAC1 (1425) & SVAC1-2 (1425-2) SVAC2 (1445) & SVAC2-2 (1445-2) SVAC4 (1465) & SVAC4-2 (1465-2)

3550542 3550540 3550586

Elements SVAC1 (1425) SVAC1-2 (1425-2) sides SVAC1 (1425) SVAC1-2 (1425-2) bottom SVAC2 (1445) SVAC2-2 (1445-2)sides SVAC2 (1445) SVAC2-2 (1445-2)bottom SVAC4 (1465) & SVAC4-2 side/top SVAC4 (1465) & SVAC4-2 bottom SVAC4 (1465) & SVAC4-2 side w/ probe

9570867 9570860 9570843 9570858 9570883 9570884 9570912

EMI Filter, 10A

2800502

EMI Filter, 20A SVAC4 (1465)

2800503

N/A

Fuse, T16A 250V

3300513

Fuse Holder

3300501

Door Gasket SVAC1 & SVAC1-2 9X9 inch red silicon

3450630

Door Gasket SVAC2 & SVAC2-2 12 X 12 red silicon

3450707

Door Gasket SVAC4 & SVAC4-2 18 X 18 red silicon

3450719

I/O Switch

7850570

Pilot Light, green

4650554

Pilot Light, red

4650553

Power Cord

1800510

1800539 (US)

1800500 (EURO)

Probe SVAC1 (1425), SVAC1-2 (1425-2)

SVAC4 (1465) & SVAC4-2 (1465-2) SVAC2 (1445) & SVAC2-2 (1445-2)

6600519 6600519 6600536

Safety Controller

1750648

Section

Continued on next page

Description

100-120V

220-240V

Temperature Controller (Watlow) SVAC1 (1425) & SVAC1-2 (1425-2) SVAC2 (1445) & SVAC2-2 (1445-2) SVAC4 (1465) & SVAC4-2 (1465-2)

9660501 9660502 9660503

Vacuum Gauge (Digital) Sunx

7850583

Vacuum Gauge (Digital) Autonics

7850584

Ventilation Valve

9990736

Vacuum Valve

9990737

UNIT SPECIFICATIONS

Weight

Shipping

Net

SVAC1 (1425)

SVAC1-2 (1425-2)

145 lbs.

65.771 kg

105 lbs.

47.627 kg

SVAC2 (1445)

SVAC2-2 (1445)-2

220 lbs.

99.790 kg

179 lbs.

81.193 kg

SVAC4 (1465)

SVAC4-2 (1465-2)

400 lbs.

181.44 kg

360 lbs.

163.29 kg

Dimensions

Exterior W x D x H

Interior W x D x H

SVAC1 (1425)

SVAC1-2 (1425-2)

18 x 23 x 23.5 (in)

45.72 x 58.42 x 69.69 (cm)

9 x 20 x 9 (in)

22.86 x 30.48 x 22.86 (cm)

SVAC2 (1445)

SVAC2-2 (144-25)

20.5 x 39.50 x 26.25 (in)

52.07 x 77.47 x 66.68 (cm)

12 x 20 x 12 (in)

30.48 x 50.80 x 30.48 (cm)

SVAC4 (1465)

SVAC4-2 (1465-2)

26.5 x 34.5 x 32.25 (in)

67.31 x 87.63 x 81.92 (cm)

18 x 24 x 18 (in)

45.72 x 60.96 x 45.72 (cm)

Capacity

Cubic Feet

Liter

SVAC1 (1425)

SVAC1-2 (1425-2)

.56

15.93

SVAC2 (1445)

SVAC2-2 (144-25)

1.67

47.19

SVAC4 (1465)

SVAC4-2 (1465-2)

4.5

127.43

Vacuum Specifications

Vacuum Range

In Hg (-3.0 to -29.9), kPa (-010 to -101), mbar (-101 to -1010)

Display Vacuum range

(Display Resolution)

In Hg (0 to 29.9), kPa (5 to -101, mbar (0.05 to -1.013)

-29.92 inches Hg

10 mtorr

Maximum Permitted

END Vacuum

10 mtorr

Leak Rate

10 mtorr/hour

Temperature

Range

Stability

All Models

Amb. +10 to 220C

.2C

MODEL

VOLTS

AMPS

CYCLE

SVAC1 (1425)

SVAC1-2 (1425-

110-120 VAC

7.0 A

50/60hz

220-240 VAC

4.5 A

50/60hz

SVAC2 (1445)

SVAC2-2 (1445-

110-120 VAC

10 A

50/60hz

220-240 VAC

5.5 A

50/60hz

SVAC4 (1465)

SVAC4-2 (1465-

110-120 VAC

13 A

50/60hz

220-240 VAC

7.0 A

50/60hz

T2 S2 R2

T1 S1 R1

X1 W1 Y1

L2 K2

L3 K3 J3 L4 K4

98 99

CF CD CE B5

D6 D5

2800502

EMI FILTER

3 4

2 1

INLET

4200513

FUSE

FAN

4880550

SOLID STATE

RELAY

7030533

OTP INDICATOR

4450553

HEATING INDICATOR

4450554

TOP ½ OF

OTP

1750648

BOTTOM ½ OF

OTP

1750648

LEFT ELEMENT 50.5Ώ

BOTTOM ELEMENT 67.7Ώ

RIGHT ELEMENT 50.5Ώ

TOTAL RESISTANCE

18.4Ώ = 750W @ 120V

BLACK HT

RED HT

BLACK HT

BLACK

RED HT

BLACK HT

RED HT

TAN ULTRA HT

BLACK BLACK

GREEN LIGHTED SWITCH 7850570

WATLOW PM

9660501

RED

WHITE

MODE

12VDC POWER SUPPLY

VACUMM GAGE

7850583

BROWN

BLUE

TC THERMOCOUPLE

6600519

6750507

TAN ULTRA HT

260°C HI

LIMIT

1750654

1 2 3 4 5

6 7 8 9

SUB D 9 PIN

CONNECTOR

1650537

WIRE DIAGRAM

SVAC1 (1425) 100-120V

9851330

WIRE DIAGRAM

T2 S2 R2

T1 S1 R1

Y1 L2 K2

L3 K3 J3 L4 K4

98 99 CF CD CE B5 D6 D5

2800502

EMI FILTER

3 4

2 1

INLET

4200513

FUSEFUSE

FAN

4880551

SOLID STATE

RELAY

7030533

OTP INDICATOR

4450553

HEATING

INDICATOR

4450554

TOP ½ OF

OTP

1750648

BOTTOM ½ OF

OTP

1750648

LEFT ELEMENT 20.5Ώ BOTTOM ELEMENT 15.4Ώ RIGHT ELEMENT 20.5Ώ

TOTAL RESISTANCE 56.4Ώ = 1000W @ 240V

BLACK HT

RED HT

BLACK HT

BLACK

RED HT

BLACK HT

RED HT

TAN ULTRA HT

TAN ULTRA HT TAN ULTRA HT

BLACK BLACK

GREEN LIGHTED SWITCH 7850570

WATLOW PM

9660501

RED

WHITE

MODE

12VDC POWER SUPPLY

VACUMM GAGE

7850583

BROWN

BLUE

TC THERMOCOUPLE

6600519

6750507

BLACK

WHITE

TAN ULTRA HT

260°C HI

LIMIT

1750654

1 2 3 4 5

6 7 8 9

SUB D 9 PIN

CONNECTOR

1650537

SVAC1-2 (1425-2) 220-240V

9851329

T2 S2 R2

T1 S1 R1

X1 W1 Y1

L2 K2

J3 L4

99 CF CD CE B5

D6 D5

2800502

EMI FILTER

3 4

2 1

INLET

4200513

FUSE

FAN

4880550

SOLID STATE

RELAY

7030533

OTP INDICATOR

4450553

HEATING INDICATOR

4450554

TOP ½ OF

OTP

1750648

BOTTOM ½ OF

OTP

1750648

BLACK HT

RED HT

BLACK HT

BLACK

RED HT

BLACK HT

RED HT

TAN ULTRA HT

BLACK BLACK

GREEN LIGHTED SWITCH 7850570

WATLOW PM

9660502

RED

WHITE

MODE

12VDC POWER SUPPLY

VACUMM GAGE

7850583

BROWN

BLUE

TC THERMOCOUPLE

6600519

6750507

TAN ULTRA HT

260°C HI

LIMIT

1750654

LEFT ELEMENT 27Ώ

RIGHT ELEMENT 27Ώ

BOTTOM ELEMENT 180Ώ

TOTAL

RESISTANCE

11.7Ώ

TAN ULTRA HT

BOTTOM ELEMENT 180Ώ

TAN ULTRA HT

1 2 3 4 5

6 7 8 9

SUB D 9 PIN

CONNECTOR

1650537

WIRE DIAGRAM

SVAC2 (1445) 100-120V

9851328

T2 S2

T1 S1 R1

Y1 L2 K2

J3 L4

99 CF CD CE B5 D6 D5

2800502

EMI FILTER

3 4

2 1

INLET

4200513

FUSEFUSE

FAN

4880551

SOLID STATE

RELAY

7030533

OTP INDICATOR

4450553

HEATING

INDICATOR

4450554

TOP ½ OF

OTP

1750648

BOTTOM ½ OF

OTP

1750648

BLACK HT

RED HT

BLACK HT

BLACK

RED HT

BLACK HT

RED HT

BLACK BLACK

GREEN LIGHTED SWITCH 7850570

WATLOW PM

9660502

RED

WHITE

MODE

12VDC

POWER

SUPPLY

VACUMM GAGE

7850583

BROWN

BLUE

TC THERMOCOUPLE

6600519

6750507

BLACK

WHITE

260°C HI

LIMIT

1750654

LEFT ELEMENT 27Ώ RIGHT ELEMENT 27Ώ

BOTTOM ELEMENT 180Ώ

TOTAL

RESISTANCE

45.4Ώ

TAN ULTRA HT

BOTTOM ELEMENT 180Ώ

TAN ULTRA HT

1 2 3 4 5

6 7 8 9

SUB D 9 PIN

CONNECTOR

1650537

WIRE DIAGRAM

SVAC2-2 (144-25)220-240V

9851327

T1 S1 R1

J3 L4

99 CF CD CE

D6 D5

2800503

EMI FILTER

3 4

2 1

INLET

4200513

FUSE

FAN

4880550

SOLID STATE

RELAY

7030533

OTP INDICATOR

4450553

HEATING INDICATOR

4450554

TOP ½ OF

OTP

1750648

BOTTOM ½ OF

OTP

1750648

BLACK HT

RED HT

BLACK HT

BLACK

RED HT

BLACK HT

RED HT

TAN ULTRA HT

BLACK BLACK

GREEN LIGHTED SWITCH 7850570

WATLOW PM

9960503

RED

WHITE

MODE

12VDC

POWER

SUPPLY

VACUMM GAGE

7850583

BROWN

BLUE

TC THERMOCOUPLE

6600519

6750507

TAN ULTRA HT

260°C HI

LIMIT

1750654

TOTAL

RESISTANCE

9 Ώ

TOP ELEMENT 19.9Ώ

UPPER LEFT ELEMENT 13.5Ώ

UPPER RIGHT ELEMENT 13.5Ώ

BOTTOM ELEMENT 34Ώ

LOWER LEFT ELEMENT 13.5Ώ

LOWER RIGHT ELEMENT 13.5Ώ

TAN ULTRA HT

1 2 3 4 5

6 7 8 9

SUB D 9 PIN

CONNECTOR

1650537

WIRE DIAGRAM

SVAC4 (1465) 100-120V

9851326

T2 S2 R2

T1 S1 R1

Y1 L2 K2

L3 K3

J3 L4 K4

99 CF CD CE

2800502

EMI FILTER

3 4

2 1

INLET

4200513

FUSEFUSE

FAN

4880551

SOLID STATE

RELAY

7030533

OTP INDICATOR

4450553

HEATING

INDICATOR

4450554

TOP ½ OF

OTP

1750648

BOTTOM ½ OF

OTP

1750648

BLACK HT

RED HT

BLACK HT

BLACK

RED HT

BLACK HT

RED HT

BLACK BLACK

GREEN LIGHTED SWITCH 7850570

WATLOW PM

9660503

RED

WHITE

MODE

12VDC POWER SUPPLY

VACUMM GAGE

7850583

BROWN

BLUE

TC THERMOCOUPLE

6600519

6750507

BLACK

WHITE

260°C HI

LIMIT

1750654

TAN ULTRA HT

UPPER LEFT ELEMENT 13.5Ώ UPPER RIGHT ELEMENT 13.5Ώ

BOTTOM ELEMENT 34Ώ

TOTAL

RESISTANCE

36Ώ

TAN ULTRA HT TAN ULTRA HT

BOTTOM ELEMENT 34Ώ

TAN ULTRA HT

TAN ULTRA HT TAN ULTRA HTTAN ULTRA HT

TAN ULTRA HT

LOWER LEFT ELEMENT 13.5Ώ LOWER RIGHT ELEMENT 13.5Ώ

TOP ELEMENT 19.5Ώ TOP ELEMENT 19.5Ώ

TAN ULTRA HT

1 2 3 4 5

6 7 8 9

SUB D 9 PIN

CONNECTOR

1650537

WIRE DIAGRAM

SVAC4-2 (1465-2) 220-240V

9851325

REFERENCE 1

PROGRAMING RAMP AND SOAK PROFILE

THE WATLOW EZ ZONE CONTROLER IS CAPABLE OF 40 STEP RAMP AND SOAK PROFILES OR 4 DIFFERENT FILES WITH 10

STEPS PER FILE. BELOW IS A SIMPLE EXAMPLE PROGRAM ON HOW TO ENTER A PROFILE AND START AND RUN A PROGRAM. THE PROGRAM WILL RAMP UP TO 150 DEGREES FROM AMBIENT CONDITION AND SOAK FOR 4 HOURS. FOR YOUR PROGRAMS, MAKE SURE ENOUGH TIME IS ENTERED IN THE RAMP TIME SO THE OVEN CAN REACH SET POINT BEFORE ENTERING THE SOAK

STEP. FOR EXAMPLE: IF THE OVEN TAKES 1 HOUR TO HEAT UP TO 150 DEGREES AND YOU ENTER A RAMP TIME OF 30 MINUTES

IT WILL CUT DOWN THE SOAK TIME BY 30 MINUTES.

20.0

HOW TO ENTER THE PROGRAM

HOME PAGE

PUSH FOR

SECONDS

OR UNTIL

NEXT SCREEN

APEARS

ProF

PUSH ONCE

FOR NEXT

SCREEN

PUSH ONCE

S.tyP

FOR NEXT

BOTTOM DISPLAY

S.tyP

USE UP

OR DOWN

ARROWS

TO SELECT

ti IN TOP DISPLAY

PUSH ONCE

FOR NEXT

SCREEN

PUSH ONCE

FOR NEXT

BOTTOM

DISPLAY

t.SPl

USE UP

OR DOWN

ARROWS

TO SELECT

150 IN TOP

DISPLAY

t.SPl

SET POINT

VALUE

150

hoUr

# VALUE

USE UP

OR DOWN

ARROWS

TO SELECT

1 IN TOP DISPLAY

hoUr

PUSH ONCE

FOR NEXT

SCREEN

Min

# VALUE

USE UP

OR DOWN

ARROWS

TO SELECT

0 IN TOP DISPLAY

Min

PUSH ONCE

FOR NEXT

SCREEN

SEC

# VALUE

USE UP

OR DOWN

ARROWS

TO SELECT

0 IN TOP

DISPLAY

SEC

PUSH ONCE

TO RETURN

TO NEXT SCREEN

USE UP

OR DOWN

ARROWS

TO SELECT

2 IN TOP DISPLAY

PUSH ONCE

S.tyP

FOR NEXT

BOTTOM DISPLAY

REFERENCE 1 (cont.)

USE UP

OR DOWN

ARROWS

TO SELECT

SOAh IN TOP

DISPLAY

S.tyP

SoAh

PUSH ONCE

FOR NEXT

SCREEN

hoUr

# VALUE

USE UP

OR DOWN

ARROWS

TO SELECT

4 IN TOP

DISPLAY

hoUr

PUSH ONCE

FOR NEXT

SCREEN

Min

# VALUE

USE UP

OR DOWN

ARROWS

TO SELECT

0 IN TOP

DISPLAY

Min

PUSH ONCE

FOR NEXT

SCREEN

SEC

# VALUE

USE UP

OR DOWN

ARROWS

TO SELECT

0 IN TOP

DISPLAY

SEC

PUSH ONCE TO RETURN

TO NEXT

SCREEN

USE UP

OR DOWN

ARROWS

TO SELECT

3 IN TOP DISPLAY

PUSH ONCE

S.tyP

FOR NEXT

BOTTOM

DISPLAY

USE UP

OR DOWN

ARROWS

TO SELECT END IN TOP

DISPLAY

S.tyP

END

PUSH ONCE

FOR NEXT

BOTTOM

DISPLAY

END

USE UP

OR DOWN

ARROWS

TO SELECT

USEr IN TOP

DISPLAY

END

USEr

PUSH REPEATLY

RETURN TO

HOME PAGE

20.0

TO START THE PROGRAM PUSH THE EZ1 BUTTON ONCE. A RAMP SYMBOL WILL APPEAR ON THE RIGHT SIDE OF THE DISPLAY

INDICATING THAT THE PROGRAM IS RUNNING. TO STOP THE PROGRAM PUSH THE EZ1 BUTTON AGAIN AND THE RAMP SYMBOL

WILL DISAPPEAR AND THE SET POINT WILL RETURN TO SET VALUE BEFORE STARTING PROGRAM. WHEN PROGRAM HAS

COMPLETED IT WILL AUTOMACTICALLY RETURN TO ORIGINAL SET PONT VALUE BEFORE PROGRAM STARTED. UNITS

EQUIPPED WITH POWER EXHAUST OUTLETS THE OUTLET WILL BE ACTIVE WHEN PROGRAMS ENDS.

PUSH ONCE

FOR NEXT

BOTTOM

DISPLAY

Ent 1

USE UP

OR DOWN

ARROWS

TO SELECT

on IN TOP

DISPLAY

oFF

Ent 1

THIS SECTION IS ONLY FOR UNITS THAT IS

EQUIPPED WITH POWER EXHAUST OUTLET

REFERENCE 1 (cont.)

150

125

100

1 2 3

6 7

HOURS

DEGREES C

175

EXAMPLE GRAPH OF PROGRAMED PROFILE

WITH 1 HOUR TIME TO TEMPERATURE AND 4

HOURS SOAK AT TEMPERATURE

TI= 1 HOUR

RAMPTIME TO

SET POINT

SOAh=4 HOURS

SOAK TIME AT

TEMPERATURE

NATURAL

COOL DOWN

TO USER SET

POINT

COOL DOWN

TIME WILL

VERY DEPENDING ON

OVEN SIZE AND

CONSTRUCTION

UNITS WITH POWER

EXHAUST OUTLETS

WILL ACTIVATE HERE

REFERENCE 2

UNITS

VACUUM

DISPLAY

LETTER

KPA

KGF/CM2

BAR

PSI

MMHG

INHG

FIRST

DIGIT

SECOND

DIGIT

THIRD

DIGIT

d d I

SUNX VACUUM GAUGE

ZERO ADJUSTMENT: The SUNX DP2-20F vacuum gauge comes preset from the factory reading vacuum in inhg

and automatically runs in sensing mode when powered on. At different altitudes the gauge may need to be rezeroed. Without pressure applied and vacuum door open exposing the gauge to atmospheric pressure it should read

0.0. If not, zero the gauge by pressing and holding both up and down arrows simultaneously until the display reads zero then release the buttons and it should return to sensing mode automatically and read zero.

CHANGING VACUUM SCALES: The vacuum gauge can be set to indicate in several different units of vacuum. Below is a list of the different units of vacuum that can be selected with the corresponding display code.

The setup parameters are identified in by a three digit letter code. The first digit represents analog or digital. The second digit determines the output settings. The third digit determines the vacuum unit scale.

EXAMPLE

To change the vacuum units, press the mode button while pressing the up arrow button until the display reads Idd where the first digit d is flashing. Use the up arrow key to scroll trough each digit until the I digit is flashing. Select vacuum unit scale from the list above and change the display letter that corresponds to the vacuum units by pressing the down arrow. After the correct display letter is chosen press the mode key once to return to sensing mode. Changing the first and second digit letter will effect the way the vacuum gage functions and should be left reading dd.

SETTING OUTPUTS: The vacuum gauge comes with two outputs. These outputs are not used and are not hooked up to do anything. The gauge is used to indicate vacuum only. To set the outputs so the LED light indicator will not activate on the gauge press the mode key (MODE) once and the display should flash between P-1 and a value. Press the up arrow until the display reads UP and then press the mode key (MODE) once and the display should flash between P-2 and a value. Press the up arrow key until the display reads UP and then press the mode key (MODE) once to return to sensing mode.

REFERENCE 2 (cont.)

UNITS

VACUUM

DISPLAY

KPA

KGF/CM2

UGF

BAR

PSI

MMHG

AAH

INHG

I NG

MMH2O

H2O

FACTORY SETUP

PARAMETERS

UNIT

INH

OUT

F---3

SPD

2.5

A-1

0.0

A-5

29.9

UNL

PEY

AUTONICS VACUUM GAUGE

ZERO ADJUSTMENT: The AUTONICS PSA-V01 vacuum gage comes preset from the factory reading vacuum in

inhg and automatically runs in sensing mode when powered on. Do to different altitudes the gage may need to be zeroed. Without pressure applied and vacuum door open exposing the gauge to atmospheric pressure it should read

0.0. If not zero the gauge by pressing and holding both up and down arrows simultaneously until the display reads zero than release the buttons and it should return to sensing mode automatically and read zero.

SETTING OUTPUTS: The vacuum gauge comes with two outputs. These outputs are not used and are not hooked up to do anything. The gauge is used to indicate vacuum only. To set the outputs so the LED light indicator will not activate on the gauge press the mode key (M) once and the display should flash between ST1 and a value. Press the up arrow until the display reads HI and then press the mode key (M) once and the display should flash between ST1 and a value. Press the up arrow key until the display reads HI and then press the mode key (M) once to return to sensing mode.

CHANGING VACUUM SCALES: The vacuum gauge can be set for several different units of vacuum. Below is a list of the different units of vacuum that can be chosen from. And there corresponding display code.

To change the units of vacuum press and hold the mode (M) button for three seconds or until the display flashes between unit and vacuum unit scale code. Press the up or down arrow to change the vacuum unit scale code. To exit press and hold the mode (M) key for 3 seconds or until returned to sensing mode.

REFERENCE 3

Altitude Above

Sea Level (Feet)

Altitude Above

Sea Level

(Meters)

Atmospheric

Pressure (psi)

Maximum Vacuum

Level

Attainable (inches

Hg)

Vacuum Level

Loss at Altitude

Maximum Vacuum

Level

Possible at this

Altitude

0’

0 M

14.70 psi

29.921” Hg

1000’

305 M

14.16 psi

28.9” Hg

3.4%

96.6%

2000’

610 M

13.66 psi

27.8” Hg

7.1%

92.9%

3000’

914 M

13.16 psi

26.8” Hg

10.4%

89.6%

4000’

1219 M

12.68 psi

25.8” Hg

13.8%

86.2%

5000’

1524 M

12.22 psi

24.9” Hg

16.8%

83.2%

6000’

1829 M

11.77 psi

24.0” Hg

19.8%

80.2%

7000’

2134 M

11.33 psi

23.1” Hg

22.8%

77.2%

8000’

2438 M

10.91 psi

22.2” Hg

25.9%

74.1%

9000’

2743 M

10.50 psi

21.4” Hg

28.6%

71.4%

10,000’

3048 M

10.10 psi

20.6” Hg

31.3%

68.7%

11,000’

3353 M

9.71 psi

19.8” Hg

33.9%

66.1%

12,000’

3658 M

9.34 psi

19.0” Hg

36.5%

63.5%

13,000’

3962 M

8.97 psi

18.3” Hg

39.0%

61.0%

14,000’

4267 M

8.62 psi

17.5” Hg

41.4%

58.6%

15,000’

4752 M

8.28 psi

16.9” Hg

43.6%

56.4%

APPENDIX

The Effect of Altitude (Atmospheric Pressure) on Maximum Attainable

Vacuum Level

The Maximum Possible Vacuum Attained is based on your Altitude. Basically, the higher you are the less vacuum you can attain. Because free air is less dense at higher altitudes (i.e. lower atmospheric pressure) operation at these higher altitudes has the effect of reducing the capacity and maximum vacuum levels attainable. In general flow is not affected, just the maximum vacuum level attainable.

It is also important to consider the relationship between atmospheric pressure and altitude as it affects vacuum pump performance.

Refer to the following table to correct for vacuum pump performance at various altitudes.

Vacuum Gauge Reading When Read at Altitude

Shellab SVAC4-2 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual