GAE CMFD Product User Manual Download Page 1

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P.O. Box 580816

♦

Modesto, CA 95358

Product User Manual

♦

EPRI Commercial Microwave Fabric

Dryer

Document # 930001, Rev. 2

July 1999

Summary of Contents for CMFD

Page 1: ...P O Box 580816 Modesto CA 95358 Product User Manual EPRI Commercial Microwave Fabric Dryer Document 930001 Rev 2 July 1999...

Page 2: ...as otherwise authorized by GAE All shipping charges for warranty repair or replacement are the purchaser s responsibility unless otherwise agreed to by GAE This warranty supercedes all other warrantie...

Page 3: ...illiwatts per square centimeter to be generated in an area accessible to operating personnel Contact GAE Inc for technical support prior to installation and or operation of these units if there is any...

Page 4: ...reen Cleaning 13 THEORY OF OPERATION 14 Dielectric Heating 14 Microwave Power Generators 14 Field Strength Sensor 15 Arc Detector 16 Exhaust Humidity Sensor 16 Exhaust Gas Sensors 17 Magnetron Thermal...

Page 5: ...nality remains intact certain functions and features have been altered or deleted from the original design specification due to discrepancies or conflicts in their operation Some of these alterations...

Page 6: ...g electronics providing a total hot air capacity of approximately 6 5 kW Selectable drying cycles include Regular and Delicate the Dryness selector has been disabled The Regular drying cycle combines...

Page 7: ...st Duct 4 Diameter Free Air Displacement 175 CFM approximate Overall Dimensions 30 High x 36 Deep x 62 High Weight approx 700 lb net 960 lb shipping Controls Cycle Start Pushbutton Cycle Stop Pushbutt...

Page 8: ...the CMFD has not been tested for immunity to noise spikes or other line power conditions that may be present in typical industrial environments A line conditioner and or regulator may be required for...

Page 9: ...k of the CMFD provides three separate analog voltage signals that are proportional 10VDC 100A to the line current drawn by corresponding subsystems within the CMFD A mating connector is also provided...

Page 10: ...urn supply power to the microprocessor and other controls NOTE One of the subsystems to which initial power is applied is the suite of four separate gas sensors These sensors require a warm up period...

Page 11: ...e of the drying cycle is a three minute cool down period during which the microwave supplies and duct heaters are all turned off Delicate This cycle utilizes only microwave energy to provide the lowes...

Page 12: ...tch may be pressed to stop the drying cycle at any time and for any reason This action initiates the fault cycle during which the buzzer will sound for ten seconds A fault condition as explain below w...

Page 13: ...d stage begins Checking the load will usual provide clues to help differentiate between gas sensor and general faults Arc Detect Fault Cycle The presence of metallic fabric or objects can when combine...

Page 14: ...or loss tangent Water is a good example of a lossy material because its molecules have a high dipole moment Most fabrics are made of materials having a relatively low dielectric loss far lower than th...

Page 15: ...five seconds before the plate voltage supplies Field Strength Sensor The field strength sensor monitors the electric field strength inside the dryer cavity It operates by sensing the microwave field u...

Page 16: ...present and the electric field strength is high Arcs can result in scorching of fabrics and possibly an open flame if allowed to continue unchecked Arcs are detected using a photo diode that generate...

Page 17: ...ic Operation section when its slope exceeds a preset value The sensor elements operate most effectively at an elevated temperature thus a heater voltage 5 VDC is supplied in addition to an instrument...

Page 18: ...directly while others are powered through additional circuitry Devices connected to the output of this power supply are protected by a 5 Amp fuse Gas Sensor Power Supply This power supply is dedicated...

Page 19: ...nual Page 19 EPRI Commercial Microwave Fabric Dryer Gerling Applied Engineering Inc Modesto CA freely through the center of the cavity as they tumble In any case the maximum allowable basket rotation...

Page 20: ...he CMFD even during periods of non operation All service personnel must be aware of the hazards involved with high voltage electrical circuitry and high power microwave devices In the event service be...

Page 21: ...ollows COM 1 19 200 baud No parity 8 data bits 1 stop bit No handshaking Terminal Emulator Data Logging Any terminal emulation program such as HyperTerminal provided with MS Windows 95 can be used to...

Page 22: ...an also be started using the shortcut keys CTRL SHIFT W but care must be taken to ensure that only one program is running at any given time After the WinWedge software has successfully started the rib...