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Instructions

Fisher Isotemp

Model 282A

Vacuum Oven

Catalog No. 13-262-52 & 53

Manual PN 52063 (REV H)

Published 3/02

2000 Park Lane

Pittsburgh, PA 15275

(412) 490-8300

Summary of Contents for 282A

Page 1: ...Instructions Fisher Isotemp Model 282A Vacuum Oven Catalog No 13 262 52 53 Manual PN 52063 REV H Published 3 02 2000 Park Lane Pittsburgh PA 15275 412 490 8300...

Page 2: ...8 Key Entry 8 Table 5 Set Time and Day Menu 4 9 Key Entry 9 Table 6 Program Mode ON OFF Menu 5 9 Key Entry 9 Table 7 Program Edit Mode Menu 6 9 Key Entry 9 Establishing Operating Conditions 10 TEMPERA...

Page 3: ...s plating and electronic process control Five built in self diagnostic features open thermocouple over temperature power failure low battery and calibration data corruption on the front panel displays...

Page 4: ...any shipping damage has occurred retain the unit intact including all packing materials and file claim with the final carrier Usually the firm will send an investigator to ascertain liability Table 1...

Page 5: ...CTORS AND VALVES POWER SWITCH A rocker type switch that controls all power to the Model 282A Vacuum Oven VACUUM CONTROL Valve A forged body shut off valve used to open and close the connection to an a...

Page 6: ...5 Calibration Jumper Pin JP4 Group of four pins located in the center of the rear of the control board The lower two pins when jumped enable calibration mode See Figure 2 for controller rear view...

Page 7: ...point 20 C PWRF Power Failure Power failure only detected during program mode The failure must be longer than 2 minutes Time display alternates between PWRF HH MM and DAY n at 5 second intervals BATT...

Page 8: ...m oven for operation 1 Verify that all packing items and securing materials have been removed from the oven 2 Move the oven to the desired location as specified above 3 Locate the two serrated hose fi...

Page 9: ...Time of day Bottom Display Temperature C Pressure in Hg Adjust temperature control setpoint Turn vacuum pump contacts On OFF 2 ADJT Display temperature offset value Adjust temperature control offset 3...

Page 10: ...Program Edit Mode Menu 6 Step Key Entry Action Display 1 Press MENU until PSET is displayed then press SET Unit enters the program edit mode and points to MONday step 1 Use the UP DOWN keys to select...

Page 11: ...Tabs 3 and 4 NOTE Vacuum pump operation can be performed independently as well 1 Remove power cord from the supply outlet 2 To access the auxiliary contacts remove six screws holding the right side p...

Page 12: ...er the value Return to the default mode by continuously pressing MENU or leave as is for two seconds and control will revert to the default mode automatically NOTE If fast warm up is desired the tempe...

Page 13: ...the UP DOWN arrow keys Press the SET key again to enter the day of the week PROGRAMMING THE OVEN The oven controller is capable of handling 8 instructions per day 7 days a week Programming the control...

Page 14: ...Pump OFF Time 1 00 PM Temp 150 C Pump OFF Time 1 00 PM Temp OFF Pump ON Time 12 00 AM Temp OFF Pump ON Time 12 00 AM 4 Temp OFF Pump OFF Time 3 00 PM Temp OFF Pump OFF Time 1 00 PM Temp OFF Pump OFF T...

Page 15: ...tude and atmospheric conditions Calibration Mode Follow the instructions below to access the calibration mode 1 Set the POWER switch to the OFF position 2 Remove the right side panel from the Model 28...

Page 16: ...ry that the barometric or atmospheric pressure be known One way of doing this is to contact the U S Weather Bureau in the installation area The bureau will provide the barometric pressure corrected to...

Page 17: ...ge McLeod and convert the reading from millimeters to inches of mercury divide by 25 4 mm inches 10 Using the UP DOWN arrow keys adjust the vacuum display to match the reading converted from the refer...

Page 18: ...DOWN arrow keys to increase or decrease the vacuum output voltage then press the SET key to enter the new value The output voltage will be updated Repeat the process until the vacuum output voltage i...

Page 19: ...oth left and right sides of the door using your hands Close vacuum valve at 25 inches of Hg 7 Tighten the two bolts for each hinge while lightly pressing each corner of the door in the area of the hin...

Page 20: ...19 Figure 6 1 6 6 Door Alignment...

Page 21: ......

Page 22: ...alysis Chart Symptom Probable Cause Corrective Action Oven does not heat CRC error Error found in calibration data Recalibrate unit Oven does not heat OTC error Open Control Thermocouple Check T C con...

Page 23: ...e publication date see front cover of this manual and subsequent revisions may have occurred after publication Table 11 Replacement Parts DESCRIPTION PART NUMBER Control P C Board 115 230V SPN 103305...

Page 24: ...23...

Page 25: ...24 Schematics Figure 7 115V Schematic Figure 8 230V Schematic...

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