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CONTROL PANEL OVERVIEW

 (See Figure One)  

 

 
5.1 Power 

Switch:  The main power switch on the control panel (green lighted I/O) 

controls all power to the oven.  It must be in the I/On position before any systems 
are operational.  The green pilot light in the switch will be lighted when the switch is 
in the ON position. 

 
5.2 Timer 

Switch:  The black I/O power switch marked TIMER is located to the right of 

the main power switch.  It controls the power to the time circuit.  In the O/Off position 
the oven heat is controlled with no timed duration.  In the I/On position heat is 
controlled for a timed interval and then the heat shuts off. 

 
5.3 

Overtemperature Safety Thermostat:  This control is marked HIGH LIMIT and is 
equipped with an adjustment knob and a graduated dial from 0 – 10.  It is 
independent of the Main Controller and guards against any failure which would 
allow temperature to rise past the main controller’s set point.  This allows continued 
operation of the oven until the problem can be corrected or service can be arranged. 
It is not recommended that the unit be operated for extended periods of time using 
only the Overtemperature Safety as the temperature controller.  On “S” suffix 
models, the Overtemperature Safety will shut the oven off by tripping the over-
temperature relay.  Pushing the red reset button is required to restart the oven after 
the interruption reason has been cleared. 

 
5.4 OTP 

Light:  This pilot lamp marked OTP is directly above the Overtemperature 

Safety Thermostat.  The light will come on when the Safety Thermostat has been 
activated and taken over control of the oven.  The power to the over-temperature 
relay coil is turned OFF for “S” suffix models.  Under normal operating conditions 
the pilot lamp should never be lit. 

 
5.5 

Manual Reset Button: (“S” suffix models only)  The red reset button, next to the 
OTP light, is for resetting the oven power if the temperature relay has been de-
activated.  The reset button must be pushed for initial start up and any time 
thereafter when there is a power interruption to the Overtemperature relay.   

 
5.6 Timer 

Control:  This control is marked SET/TIMER and consists of a digital display, 

UP/DOWN arrow pads, a RESET “PUSH” pad, a START/STOP “PUSH” pad and a 
TIMER ACTIVATED light.  This control provides the ability to set a timed heat 
interval, activate the start-up of the timed heat cycle and shut down the timed heat 
cycle automatically. 

 

Section

5

Summary of Contents for 1330FM

Page 1: ...M 1350GM 1370GM 1330FMS 1350FMS 1370FMS 1330GMS 1350GMS 1370GMS INSTALLATION AND OPERATION MANUAL Sheldon Manufacturing Inc P O Box 627 Cornelius Oregon 97113 EMAIL tech Shellab com INTERNET http www...

Page 2: ...UBLESHOOTING SECTION 9 0 PARTS LIST UNIT SPECIFICATIONS SCHEMATICS REV 01 10 4861369 This unit is a special purpose oven for professional industrial or educational use where the preparation or testing...

Page 3: ...h interior and exterior If any the carrier will arrange for official inspection to substantiate your claim 1 3 Accessories Verify that your accessory package is complete All units are equipped with a...

Page 4: ...consult your manual for further description or discussion of a control or user item 2 2 Indicates AC Power 2 3 Indicates Manual Control 2 4 Indicates Timer 2 5 C Indicates Degrees Celsius 2 6 Indicat...

Page 5: ...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...

Page 6: ...tside and dealt with according to local regulations Your dealer can provide you with a power exhaust which greatly helps under these applications 4 3 Do not operate near noxious fumes 4 4 Do not place...

Page 7: ...time using only the Overtemperature Safety as the temperature controller On S suffix models the Overtemperature Safety will shut the oven off by tripping the over temperature relay Pushing the red res...

Page 8: ...ing set point temperatures and calibration 5 8 HEATING Light This green pilot light is marked TEMPERATURE ACTIVATED and indicates when the element has been activated and the oven is heating When the s...

Page 9: ...been stabile at set point for several hours Be certain the thermometer does not touch any shelving Allow again for the temperature to stabilize until five 5 consecutive readings at one minute interva...

Page 10: ...Minute Function After the correct value for hours is set push the RESET pad again The blinking decimal will now move one digit to the right between digits 3 and 4 Pushing the UP or DOWN arrow pads wil...

Page 11: ...ized Turn on the timer switch Push and hold the RESET button until the timer display blinks This is to be sure that the pre set timed value is correct Press the START STOP button to activate the timer...

Page 12: ...harm the coatings WARNING Never clean the unit with alcohol or flammable cleaners with the unit connected to the electrical supply Always disconnect the unit from the electrical service when cleaning...

Page 13: ...stabilize 5 Element failure compare current draw to data plate 6 Controller failure call Customer Service 7 High limit failure confirm with front panel lights that Safety Thermostat is operating corr...

Page 14: ...mounts for control and OTP sensors then trace wires or tubing between sensors and controls 7 Calibration sensitivity call Customer Service 8 High limit set too low be sure that Safety Thermostat is s...

Page 15: ...s or is frozen relieve binding and retest Motor makes noise F suffix models 1 Make sure that the fan or blower wheel is not contacting its housing Adjust the motor mounting bracket position to re cent...

Page 16: ...r in wall 3 See if unit is on e g fan or heater and just controller is off 4 Check all wiring connections especially around the on off switch Unit is smoking Out of box This is not an uncommon occurre...

Page 17: ...70538 Heating Element 1350G Models 9570539 9570540 Heating Element 1370F Models 9570537 9570538 Heating Element 1370G Models 9570551 9570552 I O On Off Power Switch 103351 103351 Main Control W Timer...

Page 18: ...x 14 75 1330GM 21 25 x 23 75 x 33 13 x 14 x 14 75 1330GMS 21 5 x 24 5 x 33 13 x 14 x 14 75 Capacity Cubic Feet 1330FM 1 6 1330FMS 1 6 1330GM 1 6 1330GMS 1 6 Temperature Range Uniformity Recovery 1330F...

Page 19: ...5 1350GM 27 x 25 5 x 34 75 18 25 x 19 x 16 5 1350GMS 27 5 x 27 x 34 75 18 x 19 x 16 5 Capacity Cubic Feet 1350FM 4 1350FMS 4 1350GM 4 1350GMS 4 Temperature Range Uniformity Recovery 1350FM 40 above am...

Page 20: ...S 1370GM 32 5 x 28 x 36 25 23 x 20 x 18 5 1370GMS Capacity Cubic Feet 1370FM 5 1370FMS 5 1370GM 5 1370GMS 5 Temperature Range Uniformity Recovery 1370FM 40 above amb to 240 C 1 5 C at 150 C 6 min at 1...

Page 21: ...K 4880549 RY1 RY1 BLK BLK X1000124 BLK BLK RED TAN TAN RED BLK 9851070 2800502 2350509 34 3 9570538 101676 101168 1750613 101613 200020 101746 1750615 103351 LIGHTED MAIN POWER SWITCH 8 0 0 0 5 2 4 8...

Page 22: ...22 WIRING DIAGRAM FM GM 110V Models...

Page 23: ...UTRAL GROUND LOAD PROBE 1 2 4 1 2 4 9851067 12 4 08 L HEATING ACTIVATED LIGHT 200021 TIMER SWITCH X1000124 BLOWER MOTOR 100 RTD QUENCH ARC x3 101676 NEMA 6 15P EU1 16P IEC 320 INLET L2 L1 L2 L1 L2 L1...

Page 24: ...onents not manufactured by Manufacturer is not covered by this warranty This warranty is void in the event that repairs are made by anyone other than Manufacturer without prior authorization from Manu...

Page 25: ...es LA Mid Atlantic Area Baltimore MD Branford CT Bridgeport NJ S Plainfield NJ VWR Canlab Offices Mississauga Ontario Ville Mont Royal Qu bec Edmonton Alberta Or Call Direct for Specialized Service Lo...

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