HORIZONTAL AIR FLOW OVENS SMO14HP-2 SMO34HP-2 SMO38HP-2 Previously designated as: HF15-2, HF25-2, HF37-2 INSTALLATION AND OPERATIONAL MANUAL Revised 3/2014 4861584-2 P.O. Box 627 300 N. 26th Avenue Cornelius, Oregon 97113 EMAIL:tech @ Shellab.com INTERNET: http://www.Shellab.
TABLE OF CONTENTS SECTION 1.0 RECEIVING AND INSPECTION SECTION 2.0 GRAPHIC SYMBOLS SECTION 3.0 INSTALLATION SECTION 4.0 CONTROL OVERVIEW SECTION 5.0 PRECAUTIONS SECTION 6.0 OPERATION SECTION 7.0 MAINTENANCE SECTION 8.0 TROUBLESHOOTING AND SERVICE SECTION 9.
1 Section RECEIVING AND INSPECTION Your satisfaction and safety require a complete understanding of this unit. Read the instructions thoroughly and be sure all operators are given adequate training before attempting to put the 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.
2 Section GRAPHIC SYMBOLS Your oven has been provided with a display of graphic symbols which is designed to help in identifying the use and function of the available user, adjustable components. 2.1 Indicates that you should consult your manual for further description or discussion of a control or user item. 2.2 Indicates “Adjustable Temperature”. 2.3 Indicates “AC Power ON”. 2.4 Indicates “High Limit Safety”. 2.5 Indicates “Manual Control”. 2.6 Indicates “Potential protective partition. 2.
3 Section INSTALLATION 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 of the SMO14HP-2 (HF15-2), SMO34HP-2 (HF25-2), and SMO38HP-2 (HF37-2) require hard wiring and should be performed by a qualified electrical technician.
4 Section CONTROL PANEL OVERVIEW 4.1 Power Switch: The main power I/O (on/off) switch controls all power to the unit and must be in the I/ON position before any systems are operational. 4.2 High Limit Safety Thermostat: The High Limit Safety is an independent temperature control that must be adjusted by a flat-head screw driver. It prevents temperature runaway in the event that the Main Temperature controller fails.
5 Section PRECAUTIONS 5.1 The bottom surface of the chamber should not be used as a work surface. 5.2 This unit has been designed with a dampered vent(s) from the chamber. In order to work effectively and safely, some precautions will need to be taken by the operator. a. In most applications, the exhaust damper will need to be open during drying or degassing for best results. b. THIS OVEN IS NOT DESIGNED TO HANDLE COMBUSTIBLE GASSES, AND IS NOT AN EXPLOSION PROOF UNIT.
6 Section OPERATION All control functions are covered in the Jumo Manual. This is a simplified version. Unit must be plugged into correct rating power source. Check user supplied power source rating against serial plate. On ovens that need to be hard wired, must be done by a qualified electrical technician. 6.1 Push the power switch to the I/ON position, turn the Over Temperature Thermostat to its maximum position clockwise using a flat-head screw driver.
1. Push the PGM Button once and then navigate using the Down Arrows until you reach “CONF” in the bottom display. Up and 2. After you reach “CONF”, push the PGM Button again and use Up and Down Arrows to navigate until you reach “PRO” in the bottom display and push the “PGM” button again. 3. The display should now read “FNCT” in the bottom display and “2” in the top display. You will need to change the “2” to “0”. To do that, push the “PGM” button once and the “FNCT” should start flashing.
EXAMPLE PROGRAM Let’s say you want to have the oven to ramp up to 100°C in 30 minutes and control for 1 hour at 100°C. Then you want to ramp up to 150° in 30 Minutes and control for 2 hours. Then you want to cool down to start Set Point with Power Exhaust Outlet activated in one hour.
at -2 to match the process value to the independent thermometer. To navigate the control to the Offset Calibration mode, push the PGM button once and then push the up arrow once and the bottom display should read CONF. Then push the PGM button again and the display should say INP. Push the PGM button again and the display should read INP1. Push the PGM button again and the display should read SENS. This enters you in the Input/Configuration Menu. To navigate through the menu, press the up and down arrows.
7 Section MAINTENANCE 7.1 Cleaning: The unit chamber should be cleaned and disinfected on a regular basis. Remove shelving & shelving supports then clean thoroughly, including all corners using a suitable disinfectant that is appropriate to your application. Regular periodic cleaning is required. Special care should be taken when cleaning around sensing heads to prevent damage. DO NOT use chlorine based bleaches or abrasive cleaners as this will damage the stainless steel interior.
8 Section TROUBLESHOOTING 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 – trace wire from display to probe; move wire and watch display to see intermittent problems Chamber temp spikes over set point and then settles to set point Recalibrate Temperature too low 1/ high limit set too low – see section 4.
blower motor in shadow box 3/ is ambient room temperature radically changing – either door opening or room airflow from heaters or air conditioning ? – stabilize ambient conditions 4/ it may happen if exhaust stack is 100% open or if power exhaust is cycling – adjust stack to at least ¼ closed 5/ sensor miss-located, damaged or wires may be damaged - check mounts for control and High Limit sensors, then trace wires between sensors and controls 6/ calibration sensitivity – call Customer Service 7/ high limit
OTHER Controller on at all times - "locked-up" 1/ Adjust set point to room temperature. If the light goes out but is still heating, replace the solid state relay. 2/ turn unit off and on to reset 3/ if cannot change any condition on the front panel, call Customer Service Controller timer resets on its own 1/ confirm that power from wall is consistent and within specs 2/ call Customer Service with serial number Front panel displays are off 1/ Check for wire damage.
9 Section PARTS LIST Description Part No.
UNIT SPECIFICATIONS 31.5 x 26.0 x 60.5. Weight Shipping Net SMO14HP-2 (HF15-2) SMO34HP-2 (HF25-2) SMO38HP-2 (HF37-2) 630 lbs. 445 lbs. Dimensions SMO14HP-2 (HF15-2) SMO34HP-2 (HF25-2) SMO38HP-2 (HF37-2) 820 lbs. 980 lbs. Exterior WxDxH (in) Interior WxDxH (in) 59 x 29 x 57 44 x 20.5 x 36 42.5 x 32 x 83 31.5 x 26.5 x 60.5 68 x 33 x 80 44 x 25 x 54 Capacity Cubic Feet SMO14HP-2 (HF15-2) SMO34HP-2 (HF25-2) SMO38HP-2 (HF37-2) 14.
WIRE DIAGRAM 18
SHELDON MANUFACTURING, INC. LIMITED WARRANTY (Parts only, exclusive of labor) Sheldon Manufacturing, Inc., (“Manufacturer”) warrants for the original user of this product that all parts, not including finished goods products, it manufactures or resells will be free from defects in material and workmanship for a period of one year from the date of delivery of this product to the original user (the “Warranty Period”).
