VWR International 89508-426 Operating And Maintenance Manuall Download Page 1

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User Manual

VWR

Collection Models 89508-426

and 89508-428

Vacuum Oven

Operating and Maintenance Manual 7006291 • Rev. 0

Summary of Contents for 89508-426

Page 1: ...User Manual VWR Collection Models 89508 426 and 89508 428 Vacuum Oven Operating and Maintenance Manual 7006291 Rev 0...

Page 2: ...7 13 Original ccs REV ECR ECN DATE DESCRIPTION By Preface Vacuum Oven i Models covered in this manual Catalog Numbers Model Numbers Voltage Feature Size cu ft 89508 426 6291 120V Dial thermometer 0 7...

Page 3: ...stments and maintenance must be performed by qualified service personnel s Material in this manual is for information purposes only The contents and the product it describes are subject to change with...

Page 4: ...equipment that has been put on the market after 13 August 2005 This product is required to comply with the European Union s Waste Electrical Electronic Equipment WEEE Directive 2002 96 EC It is marke...

Page 5: ...rol 6 1 Loading the Oven 6 1 Unloading the Oven 6 2 Purging the Chamber with Inert Gas 6 2 Releasing the Vacuum 6 2 Maintaining Proper Vacuum Level 6 2 Routine Cleaning 7 1 Maintenance 7 1 Care and Cl...

Page 6: ...t helps maintain temperature uniformity effectiveness Temperature is controlled by a hydraulic thermostat and can be read on the dial thermometer The chamber of the unit is not designed for exposure t...

Page 7: ...conformance with local electrical codes It is most important that the user follow installation instructions exactly as written Failure to do so is likely to lead to improper operation erroneous calibr...

Page 8: ...rmometer Type Bimetallic dial type range from 0 C to 300 C in 5 C increments Chamber Dimensions 89508 426 10 W x 12 D x 10 H 25 x 30 x 25 cm 89508 428 14 W x 20 D x 14 H 36 x 51 x 36 cm Overall Dimens...

Page 9: ...onditions Indoor use only Operating 15 C to 40 C Humidity 20 to 80 Voltage Fluctuation 10 of nominal Installation Category II overvoltage in accordance with IEC 664 Pollution Degree 2 in accordance wi...

Page 10: ...must call for a damage inspection promptly s Place the unit where it will be operated away from drafts and wide variations in ambient temperature It should be near a power source that matches the uni...

Page 11: ...ded outlet If a plug must be installed use only the 3 prong grounded type rated for the unit load requirements and matching the power outlet Make sure the green ground wire is secured to the plug grou...

Page 12: ...ature A permanently set bimetallic thermostat not on the panel limits oven temperature at 250 C should the control thermostat fail 3 Vacuum Gauge Displays chamber level to 30 inches of mercury 4 Vacuu...

Page 13: ...has stabilized check the temperature again and make further thermostat adjustments until the thermometer consistently shows the desired operating temperature Push the power switch OFF and allow the o...

Page 14: ...vacuum with an inert gas Connect 1 4 inch ID tubing to the hose connector marked VENT and connect the other end of the tubing to the regulator at the inert gas source Start the gas flowing at no more...

Page 15: ...et with a solution of water and mild soap or detergent to clean off surface dirt marks or smudges Keep the vents clear of dust for free air circulation This will add to the service life of components...

Page 16: ...lm or coating However if free oxygen is not available due to scale or contamination buildup the metal surface may become vulnerable to rusting and corrosion as well as pitting But by maintaining neutr...

Page 17: ...nd the stainless steel surface cleaned with mild soapy water followed by a clean water rinse Anti fungal and anti bacterial additives are permissible to use as long as the pH of the aqueous solution i...

Page 18: ...n to soak the surface affected until rust and scale is loosened Immediately follow with a clean water rise Citric acid based cleaners Bathroom tub and tile cleaners A mixture of 20 nitric acid and 1 5...

Page 19: ...n Consult your staff chemist to determine what would be best for your stainless steel product and laboratory s Apply a high quality vacuum grease to the door gasket frequently especially before initia...

Page 20: ...Check the vacuum vent valve order a replacement if it is leaking Won t vent or evacuate Check for open fittings large leaks Check vacuum vent valve replace if bad Check tubing fittings for obstructio...

Page 21: ...VWR International LLC Radnor Corporate Center Building One Suite 200 100 Matsonford Road Radnor Pennsylvania 19087 United States 610 386 1700 www vwrsp com...