"user manual"
Contents
1. SHEL LAB HORIZONTAL AIR FLOW CLEAN ROOM OVEN MODEL CR1 2 INSTALLATION AND OPERATIONAL MANUAL P O Box 627 300 N 26 Avenue Cornelius Oregon 97113 EMAIL tech Shellab com e INTERNET http www Shellab com 1 800 322 4897 TELEPHONE 503 640 3000 FAX 503 640 1366 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 CLEAN ROOM READY INSTRUCTIONS SECTION 7 0 OPERATION SECTION 8 0 MAINTENCE SECTION 9 0 TROUBLESHOOTING AND SERVICE SECTION 10 0 PARTS LIST UNIT SPECIFICATIONS SCHEMATICS REV 1 04 4861580 These units are for professional industrial or educational use where the preparation or testing of materials is done at approximately atmospheric pressure and no flammable volatile or combustible materials are being heated These units are not intended for hazardous or household locations or use 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 1 2 1 3 1 4 Inspection The carrier when accepting shipment also accepts responsibility for safe delivery and is lia2. 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 Place shelves in the chamber as desired Section CONTROL PANEL OVERVIEW 4 1 4 2 4 3 4 4 4 5 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 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 If the chamber temperature rises above the Main Temperature set point the High Limit maintains temperature at its own set point preventing sample loss or unit degradation Please note that it is not recommended that the unit be allowed to operate using only the High Limit to control temperature as temperature uniformity will suffer High Limit Activated This pilot light is on when the High limit has been activated and has taken control of the heating element Under normal operating conditions this pilot lamp should never be on Main Temperature Controller This is a microprocessor based Temperature Time Control Which has ramp and soak capabil
3. electrical source before proceeding to make any electrical repairs or replacements If a mercury thermometer is used for verifying chamber temperatures and breakage should occur all spilled mercury MUST be completely removed from the chamber before continuing operation This is NOT designed for use in Class I Il or III locations as defined by the National Electric Code This oven is not intended nor can it be used as a patient connected device Section MODEL CR1 2 CLEAN ROOM READY INSTRUCTIONS This oven has been designed to operate at class 100 standards It is not shipped clean room ready and the instructions below must be followed for proper installation See Figure 2 6 1 6 2 BURN IN OF THE HEPA FILTER Before using this oven it is important that the filter be burnt in properly During burn in the Hepa filter will off gas Because of this the intake and exhaust ports must be open with the exhaust ports being ducted outside A material safety data sheet is included with your operation literature for reference Note that you should read Section 7 0 and have a clear understanding of how to operate the unit prior to following this procedure A To burn in filter 1 Set oven at 125 C for 1 hour 150 C for 4 hours 175 C for 1 hour 200 C for 1 hour 2 If operating temperature is higher than 200 C continue the cycle of one hour at 25 increments until the operating temperature is achieved B After burn
4. in the interior must be disassembled and cleaned Make sure unit is unplugged and cooled down before disassembly When disassembling use an 8 32 nut driver for removing all the cap nuts Remove the bottom liner insert before removing the liner side inserts Do not remove the Hepa filter cover After burn in the filter is very delicate like the mantel of a lantern and will fall apart The casing should only be removed when replacing the filter CONTROL AREA EXHAUST As part of this design the control compartment is sealed and requires a minimum of 30 CFM Cubic Feet Per Minute to be drawn from the control compartment exhaust port This is required to limit the control 9 compartment temperature and maintain Class 100 integrity If you are unable to exhaust the minimum 30 CFM from the control compartment then you must limit the maximum operating temperature to 200 C Operation of the unit above 200 C without moving the required 30 CFM through the control compartments exhaust will result in control degradation and process failure Not supplying the required 30 CFM may also keep the unit from operating at class 100 specifications by allowing particulars from the control compartment to escape into the room Figure 2 10 OPERATION 7 1 7 2 7 3 7 4 7 5 Check power supply against unit serial plate They must match CF1 must be hard wired by an electrical technician Push the power switch to the I On position
5. step program The first step would be Set Point step The Set Point would be 100 degrees The time would be programmed as zero since you want the oven to get 100 as fast as possible The second step would be a Soak Step The soak time would be 5 hours and 30 minutes The third step would be a Set Point step with the set point set to zero and the time set to zero The final step would be an End step Setting High Limit Prior to setting the High Limit Control be certain the Main temperature Control has reached the input set point and has remained stable for several hours This will insure that the High Limit is set at the proper temperature As stated in 4 3 the High Limit control should be at maximum position clockwise Now turn the thermostat counter clockwise using a flat head screwdriver until the High Limit Activated indicator light comes on Next turn the thermostat clockwise just until the indicator light turns off Then turn the thermostat clockwise two 2 minor increments on its scale past the point where the indicator light went out This will set the High Limit at approximately 10 C above the Main Temperature set point MAINTENANCE 8 1 8 2 8 3 8 4 Cleaning The unit chamber should be cleaned and disinfected on a regular basis Remove shelving amp shelving supports then clean thoroughly including all corners using a suitable disinfectant that is appropriate to your application Regular periodic cleaning is required Sp
6. and turn the High Limit Thermostat to its maximum position clockwise using a flat head screw driver The Main Temperature controller should illuminate Setting Main Temperature This is explained in full detail in the enclosed Watlow 982 user s manual The following instructions are for single set point operations only See Section 7 5 for further simplified instructions The Watlow 981 controller has 4 automatic settable profiles with six steps within each profile For programming and set up instructions turn to Chapter 7 page 7 1 in the Watlow manual 1 The process upper window of the controller will display the current chamber temperature 2 The lower window of the controller will indicate the current set point 3 To change the set point press the up or down arrow key until the desired set point is displayed in the lower controller window 4 The oven will heat to the selected set point and remain there until changed Note that the settings will not change if the unit is turned off Simplified 981 Instructions The 981 is a microprocessor based ramp and soak programmable temperature controller It is capable of being programmed with up to four profiles A ramp is a controlled change in temperature over a specified period of time A soak is a hold at particular temperature for a specified period of time with up to six steps each Profiles can be linked for programs needing more steps up to a total of 21 ramps or soaks A Sin
7. be void 18 Section PARTS LIST Units are 220 Volt Description Part No Shelf 5121154 Shelf Standards 5121189 Solid State Relay 102162 Temperature Probe 101827 Watlow 981 Main Temperature Controller 1750540 UNIT SPECIFICATIONS These units are 240 VAC See the individual data plate of the unit for specific ratings CR1 2 425 lbs 325 Ibs Exterior WxDxH Interior WxDxH in in CR1 2 35 x 30 25 x 38 17x20 x 20 125 Capacity Cubic Feet CR1 2 emperature Uniformity CR1 2 40 to 200 C 0 75 100 C POWER VOLTAGE AMPERAGE WATTAGE HERTZ CR1 2 220V 11 5 AMPS 2000 WATTS 50 60 150 C Recovery Time CR1 2 20 WIRE DIAGRAM Li L2 ENI FILTER ul D el ON OFF SWITCH AN COOLING FAN BLOWER SAFETY CONTROL D SAFETY PILOT LIGHT K2 O 0 O B G Maaa aa TERMINAL E BLOCK CONVENIENCE OUTLET b TEMPERATURE CONTROL SOLID STATE RELAY TEMPERATURE PROBE HEATING ELEMENT 21
8. bilize 5 verify that reference thermometer is certified See above 1 turn entire unit off and on to reset 2 if repeatedly happens call Customer Service This can be a normal condition when operating temperature varies widely For maximum accuracy calibration should be done at or as close to the set point temperature 16 MECHANICAL Door not sealing 1 check physical condition of gasket 2 assure that gasket is in original location Motor doesn t move 1 if shaft spins freely check connections to motor and check voltage to motor 2 if shaft rubs or is frozen relieve binding and retest Motor makes noise 1 If noise is from the motor tap the top of motor shaft with ball peen hammer 2 If the sound gets worse tap the other end of the shaft avoiding touching the blower wheel 3 If there is no change call Customer Service 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 Unit or wall fuse circuit breaker is blown 1 check wall power source 2 compare current draw and compare to specs on
9. ble for loss or damage On delivery inspect for visible exterior damage note and describe on the freight bill any damage found and enter your claim on the form supplied by the carrier Inspect for concealed loss or damage on the unit itself both interior and exterior If necessary the carrier will arrange for official inspection to substantiate your claim Return Shipment Save the shipping crate until you are sure all is well If for any reason you must return the unit first contact your customer representative for authorization Supply nameplate data including model number and serial number Please see the manual cover for information on where to contact customer service Verify that all of the equipment indicated on the packing slip is included with the unit Carefully check all packaging before discarding The CR1 2 comes equipped with 4 leveling feet 4 shelf slides and 2 shelves 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 AN Indicates that you should consult your manual for further description or discussion of a control or user item s 2 2 Indicates Adjustable Temperature 2 3 ERE LA Indicates AC Power ON 2 4 i Indicates High Limit Safety 2 5 Indicates Manual Control 2 6 N Indicates Potential Shock Hazard behind this protect
10. d and this is where you program your Ramp and Soak Files The Program Sub Menu is used to input time and temperature steps into the controller The five types of steps that can be programmed are Set Point Soak Jump Loop Link File and End A Set Point step inputs the temperature desired and the time taken to get to that temperature A Soak step only inputs the amount of time that the temperature in the previous step is maintained A Jump Loop tells the controller to jump to another step A Link File jumps to another profile and End step ends the program In programming each step is a series of commands For a Set Point step commands are SP Set Point Hours Hours Min Minutes Sec Seconds ENT3 Event Three the power exhaust outlet The set point is the temperature that you want the oven to go to The Hours Minutes Seconds is the time you want the oven to take to reach set point If you want the oven to reach set point as fast as possible then set these times to zero The Event Three is whether the power exhaust outlet is turned on or off A Jump Loop step has only three commands JF Jump File JS Jump Start and JC Jump Count 12 7 6 The Link File step has only one command LFIL File to link to an End step has only one command END An example of a simple program would be one in which you want the oven at 90 to 100 degrees maintain 100 degrees for 5 hours and then cool down to room temperature This would be a four
11. data plate 3 see what other loads are on the wall circuit Unit will not turn on 1 check wall power source 2 check fuse circuit breaker on unit or in wall 3 see if unit is on e g fan or heater and just controller is off 4 check all wiring connections esp around the on off switch Unit is smoking out of box 1 put unit under vent and run at full power for one hour 2 follow special burn in procedures in section 6 0 Contamination in chamber 1 see cleaning procedure in operator s manual 2 develop and follow SOP for specific application include definition of cleaning technique and maintenance schedule Contamination in sample 1 see Contamination in chamber 17 SERVICE If this product should require service contact your service representative For information on where to reach customer service please see the front cover of this manual Should return of this product be necessary a return Authorization number must be obtained and the product shipped according to your representatives instructions to the indicated service center If a return authorization number is not obtained then the product will be returned back to the sender To insure prompt handling the return authorization number should be placed on the outside of the package and a detailed explanation of the return enclosed with the item After receiving the Return Authorization number the item must be received within 30 days if not the return authorization will
12. ecial 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 DO NOT use spray cleaners that might leak through openings and cracks and get on electrical parts or that may contain solvents that will 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 and assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the power supply Storage If the oven is to be turned off it can be reactivated without controller adjustments Prior to storage the interior should be wiped dry to eliminate contamination If the unit is to be transported disconnect the power supply remove shelving and screw the leveling feet in See Section 3 3 Lifting handling for transport instructions There is No Maintenance required on the electrical components If the unit fails to operate as specified please review the troubleshooting guide prior to calling for technical support Hepa Filter Replacement Replace the hepa filter when the control compartment exhaust becomes noticeably reduced The amount of time a Hepa filter will last depends on the environment in which the unit operates This will have to be determined by the end user to establish standard operating proc
13. edures or maintenance schedule 14 TROUBLESHOOTING TEMPERATURE Temperature too high Display reads HI or 400 Chamber temp spikes over set point and then settles to set point Temperature too low Display reads LO Unit will not heat over a temperature that is below set point 1 controller set too high see your Watlow users manual 2 controller failed on call Customer Service 3 wiring error call Customer Service 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 Recalibrate see Watlow users manual 1 high limit set too low see section 4 5 2 controller set too low see Watlow users manual 3 unit not recovered from door opening wait for display to stop changing 4 unit not recovered from power failure or being turned off incubators will need 24 hours to warm up and stabilize 5 element failure call Customer Service 6 controller failure confirm with front panel lights that controller is calling for heat 7 high limit failure confirm with front panel lights that High Limit is operating correctly 8 wiring problem check all functions and compare wiring to owners manual especially around any areas recently worked on 9 loose connection check shadow box for loose connections 1 sensor is plugged in backwards call Customer Service 2 if ambient r
14. electing a location consider all conditions which might affect performance such as heat from radiators ovens autoclaves etc Avoid direct sun fast moving air currents heating cooling ducts and high traffic areas Allow a minimum of 30cm between the unit and walls or partitions which might obstruct free air flow 3 3 Lifting Handling These units are heavy and care should be taken to use appropriate lifting devices that are sufficiently rated for these loads Units should only be lifted from their bottom surfaces Doors handles and knobs are not adequate for lifting or stabilization The unit should be completely restrained 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 and damage 3 4 3 5 3 6 Leveling The unit must sit level and solidly Leveling feet are supplied and must be installed in the four holes in the bottom corners of the unit With the feet installed and the unit standing upright each foot can be raised by turning it in a counterclockwise direction Adjust the foot at each corner until the unit stands level and solid without rocking If the unit must be moved turn the leveling feet all the way clockwise to prevent damage while moving Cleaning The unit chamber should be cleaned and disinfected prior to use Remove shelving and shelving supports and clean thoroughly
15. gle Temperature Operation Normally an average user only wants to operate the oven at one temperature When the oven is turned on the controller will show the temperature within the oven on the top display The bottom display will show the set point The controller will maintain the temperature within the oven to whatever 11 the lower display is set for To change the set point press the Up or Down keys until the desired temperature is displayed in the lower display Timed Operation Sometimes a user will want to operate the oven at a given temperature for a specified period of time and then cool off To do this a small program must be put into the controller Before attempting to program the controller it is helpful to learn a small amount about how the controller is programmed The controller has three main menus See the Watlow users manual for in depth information These are the Setup Menu Factory Menus and the Operation Menus The Setup Main Menu has four sub menu s Input Output Global and Com These are all preprogrammed at the factory and should need no adjustment under most circumstances The Factory Menu should never be accessed or changed by anyone other that an authorized factory representative The Operation Menu has three sub menus System PID and Program The System and P I D Menus are factory preset and should not need any adjustment under normal circumstances The third sub menu under Operation Menu is programme
16. 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 4 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 set too low be sure that High Limit is more than 5 degrees over desired set point check if High Limit pilot is on continuously turn controller knob completely clockwise to see if problem solved then follow instructions in Section 7 5 for correct setting 8 electrical noise remove nearby sources of RFI including motors arcing relays or radio transmitters 9 bad connection on temperature sensor or faulty sensor check connectors for continuity and mechanical soundness while watching display for erratic behavior check sensor and wiring for mechanical damage 10 bad connections or faulty solid state relay check connectors for mechanical soundness and look for corrosion around terminals or signs of arcing or other visible deterioration 1 assure that set point is at least 5 degrees over ambient room temperature 2 see if ambient is fluctuating 1 calibration error see Watlow users manual 2 temperature sensor failure call Customer Service 3 controller failure call Customer Service 4 allow at least two hours to sta
17. ities Watlow model 981 Power Exhaust Outlet The Power Exhaust outlet is controlled by the Main Temperature Controller It is located at the back of the unit next to the power cord Figure 1 D j D A Ne 2 a i g D 10 IIGH LIMIT SS S sO E 4500659 Section PRECAUTIONS 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 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 Do not place explosive combustible or flammable materials into the chamber c Some of the out gassed byproducts may be hazardous or unpleasant to operating personnel If this is the case the exhaust should be positively ventilated to the outside and dealt with according to local regulations Your dealer can provide you with a power exhaust which greatly helps under these applications Do not operate near noxious fumes Do not place sealed or filled containers in the oven chamber Do not cut or remove the ground prong from the power cord Do not use a 2 prong adapter plug Be sure that the power supply is of the same voltage as specified Disconnect the unit from its
18. ive partition 2 7 A Indicates Protective Earth Ground SE 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 CR1 2 requires hard wiring and should be performed by a qualified electrical technician The next higher circuit breaker value above the dataplate amperage may be used provided the requirements in article 422 of the National Electric Code are met USA or the National Electric Code that applies in the country where this unit will be operating in Under normal circumstances this unit is intended for use indoors at room temperatures between 5 and 40 C at no greater than 80 Relative Humidity at 25 C and with a supply voltage that does not vary by more than 10 Customer service should be contacted for operating conditions outside of these limits 3 1 Power Source The electrical supply circuit to the oven must conform to all national and local electrical codes Consult the oven s serial data plate for the voltage cycle wattage and ampere requirements before making connection VOLTAGE SHOULD NOT VARY MORE THAN 10 FROM THE SERIAL PLATE RATING This unit is intended for 50 60 Hz application A separate circuit is recommended to prevent possible loss of product due to overloading or failure of other equipment on the same circuit 3 2 Location In s
19. oom temperature is lower than range of unit compare set points and ambient temperature to rated specifications in Section 10 0 1 confirm that blower motor is moving and that amperage and voltage match data plate check blower motor motion in shadow box and feel for air movement in chamber 2 confirm that set point is set high enough turn High Limit clockwise and see if High Limit light comes on 3 check connections to sensor 4 check calibration using independent reference thermometer follow instructions in Watlow users manual 15 Unit will heat up at all Indicated chamber temperature unstable Will not maintain set point Display and actual reference thermometer don t match Can t adjust set points or calibration Calibrated at one temperature but not at another 1 verify that controller is asking for heat by looking for controller light if controller light is not on there is a problem with the controller 2 check amperage amperage should be virtually at maximum rated data plate amperage 3 do all controller functions work 4l is the High Limit set high enough for diagnostics should be fully clockwise with the pilot light never on 5 has the fuse circuit breaker blown 1 0 1 may be normal 2 is blower motor working remove top panel and verify movement of blower motor in shadow box 3 is ambient room temperature radically changing either door opening or room airflow from
Download Pdf Manuals
Related Search