Maintenance Manual
Contents
1. DIGITAL WARMING CABINETS INSTALLATION OPERATION MAINTENANCE USER MANUAL m Mac Medical C 7 us 820 S Mulberry St Millstadt IL 62260 California OSHPD 618 476 3550 phone Pre approved 618 476 3337 fax December 2007 iil VISA Contents 1 Warnings and Cautions 2 Installation 2 3 Operation Troubleshooting 4 Fan Replacenent upper 5 Fan Replacement lower 6 Door Hinge Reversal 7 Replacement Parts List 8 12 Wiring Diagrams 13 Error Codes Warnings and Cautions The following is a list of safety precautions that must be observed when operating this equipment A Warning Injury hazard REPAIRS AND AJUSTMENTS should be attempted only by experienced service representatives Use of unqualified persons to work on this equipment could result in personal injury or costly damage A Warning Burn Hazard Do Not exceed 150 F for non vented closures screw caps crimp seals plastic pouches etc Do not exceed pre sterile solution manufacturer s temperature requirements Do Not raise set temperature to increase rate of heating Allow approximately 4 6 hours for solutions to reach desired temperatures Do Not use liquids on or inject in living tissue unless actual liquid temperature has been measured and is acceptable Temperature of warming cabinet s contents be hotter than the displayed air temperature For patient safety in accord2. PROGRAMING D ORANGE BLACK SWITCH 101 YELLOW RIBBON CABLE ORANGE ALARM BUZZER CONNECTIONS FOR SWC1518 WARMING CABINETS 10 WHITE WHITE GREEN WHITE m AA E BLACK IS e is S THERMAL BLOWER MOTOR SWITCH RED RED NO BLACK WHITE ON OFF SWITCH CIRCUIT BREAKER TEMPERATURE PROBE SENSOR WHITE CONTROL ORANGE ALARM BUZZER CONNECTIONS FOR SINGLE WARMING CABINETS OLD STYLE CONTROL 11 WHITE GREEN ISAL eal WHITE EE A 48 i A BLACK SA ui DOOR SAFETY THERMAL SWITCH BLOWER MOTOR SWITCH RED RED HEATER COIL ON OFF SWITCH TEMPERATURE CIRCUIT BREAKER PROBE SENSOR 09 2 lt c Qo 2 Ed t DOOR SAFETY THERMAL SWITCH BLOWER MOTOR SWITCH RED HEATER COIL ON OFF SWITCH TEMPERATURE CIRCUIT BREAKER PROBE SENSOR CONTROL O z BLACK CONNECTIONS FOR DUAL WARMING CABINETS OLD STYLE CONTROL 12 Error Codes mbi iR E ESL IT T DTI I T TEUER e A Old Style Control Current Control Er 1 with Audible Cabinet temp is 10 couple connection degrees higher than setting Er 2 sensor type LLLL Input temperaure is mismatchor open RTD lower than inp
3. 9 Be sure the terminals on the motor face the rear of the cabinet 10 Install the three mounting screws in the new motor attach the black and white wires DO NOT connect the RED element wire to the motor This could cause serious mechanical damage 11 Install the NEW washer fan impellor and nut DO NOT over tighten nut 12 Reassemble the fan guards and replace the top of the cabinet Motor Shaft with E Clip Impellor Nut Replacement Lower Drawer Drawer 1 Turn off power switch and disconnect power to the unit 2 Open lower door and remove the drawer screws from underneath drawer 2 screws 3 Carefully pull the drawer 3 4 of the way out or until motor is accessable 4 Disconnect the black and the white wires connected to the fan motor 5 From inside the unit remove the outer fan guard 4 Screws 6 Remove the inner fan guard 2 Screws 7 Remove the nut from the fan s drive shaft and remove the fan impellor The nut has left hand threads 8 From underneath drawer remove motor mounting screws and remove motor 3 Screws 9 Install new motor The E clip on the shaft may snag If so tilt the shaft at an angle and feed it through the drawer base 10 Be sure the terminals on the motor face the rear of the cabinet 11 Install the three screws in the new motor attach the two wires See previous page Motor Shaft 12 Install the NEW washer fan im
4. technician for more information REPLACEMENT PARTS FOR METAL OR GLASS DOOR WARMING CABINETS LH Intermediate Hinge W0016 For stainless steel door dual amp triple chamber units Door Switch W0012 Door Switch Cap W0141 For bottom glass doors on dual chamber units only Power Switch OFF ON W0011 Fan Motor w Fan Blade 120VAC W0036 Fan Motor w Fan Blade 220VAC W0106 Thermocouple W0037 Overtemp Thermostat W0042 Heating Element 120 750 watt For all cabinets except SWC1824 amp SWC1518 Heating Element 120VAC W0069 350 watt for SWC1824 Heating Element 120VAC W0131 350 watt for SWC1518 Heating Element 220VAC W0107 750 watt For all cabinets except SWC1824 amp SWC1518 Solid State Relay W0083 Old Style Control W0001 Current Control W0084 WHITE GREEN Sal GREEN WHITE Nor WHITE E o SI SIS S ol Eon i BLOWER MOTOR SWITCH RED RED BLACK JE H HEATER gt R TEMPERATURE PROBE SENSOR BLACK OPTIONAL KEYED RED LOCK OUT SWITCH BLACK ON OFF SWITCH CIRCUIT BREAKER WHITE 928 1 z o r BACK SIDE i OF DISPLAY BOARD PUSHBUTTON PROGRAMING PLASA el SWITCH BLACK co ORANGE BLACK YELLOW RIBBON CABLE L ALARM BUZZER CONNECTIONS FOR SINGLE WARMING CABINETS EXCEP
5. T SWC1518 WHITE UPPER CHAMBER OPTIONAL KEYED LOCK OUT SWITCH PUSH BUTTON PROGRAMING SWITCH LOWER CHAMBER OPTIONAL KEYED LOCK OUT SWITCH PUSH BUTTON PROGRAMING SWITCH HEATER COIL k HEATER COIL k GREEN Jo OL GREEN WHITE N r WHITE In n a 0 DOOR SAFETY SWITCH BLOWER MOTOR THERMAL SWITCH RED TEMPERATURE PROBE SENSOR BACK SIDE OF DISPLAY BOARD BLACK BLACK do RIBBON CABLE THERMAL SWITCH RED TEMPERATURE BACK SIDE OF DISPLAY BOARD BLACK BLACK PROBE SENSOR 6 RIBBON CABLE O CONTROL BOARD CONTROL BOARD WHITE ON OFF SWITCH CIRCUIT BREAKER D HD YELLOW ORANGE ALARM BUZZER BLOWER MOTOR ON OFF SWITCH CIRCUIT BREAKER ORANGE A m ORANGE BLACK HO LIN O YELLOW BLUE CONNECTIONS FOR DUAL WARMING CABINETS BLACK WHITE 2 m m z I2 POWER IN WHITE BLACK E WHITE FUSE BLOWER MOTOR WHITE BLACK THERMAL SWITCH HEATER COIL TEMPERATURE PROBE SENSOR ON OFF SWITCH CIRCUIT BREAKER BLACK OPTIONAL KEYED LOCK OUT SWITCH BLACK RED WHITE CONTROL BACK SIDE OF DISPLAY BOARD
6. ance with good medical practice always check liquid temperature prior to using A Warning Electric Shock Hazard Do Not remove control tray Contact a qualified service representative A Warning Explosion Hazard Do Not use in the presence of flammable anesthetics Do not heat liquids in the presence of flammable solvents Caution Possible Equipment Damage Some items are not acceptable in these warming cabinets If in doubt as to whether an item can be safely processed have facility supervisor contact the manufacturer of the item Routine Preventative Maintenance gt Check the temperature accuracy on a semi annual basis by placing a thermometer near the fan inlet gt Air temperature should be within 1 degree F for upper chamber and counter top units and 3 degrees F for lower compartment and large single cabinet units gt Ifthe cabinet is not within these guidelines contact Mac Medical for further assistance 1 877 828 9975 Location for use This unit is intended for use in a stable ambient environment with an ideal temperature of 72 degrees F or less The unit should never be used directly next to any appliance that may produce heat such as an autoclave If the unit location is near an autoclave or similar appliance modifications may be made to ensure proper operation Contact Mac Medical for information Recommended Settings Mac Medical does not recommend chamber set points For appropri
7. ate heating temperatures please contact the manufacturer of the goods being heated For more information please contact Mac Medical DISA Warning Please review all safety precautions before operating Mac Medical equipment Installation gt Carefully un wrap packaged parts gt Place cabinet in front of its permanent location gt Plug the unit into the correct electrical supply 120 VAC 15 amp max or 220 VAC 7 amp max gt Carefully slide the unit into its permanent location Installation for units to be wired directly to supply gt Remove screws and top cover see page 4 gt Remove protection plate under top cover gt Feed electrical supply into cabinet through rear of cabinet gt Connect electrical supply as shown below gt Reinstall cover and top gt Carefully slide the unit into its permanent location 120 Volt shown Green Ground White Neutral Black Positive Operation This cabinet has been designed to heat Liquids in vented containers Liquids in non vented containers to a temperature of 150 F maximum Metal objects gt Muslin or cotton sheets and wool blankets gt Glass containers must be annealed borosilicate glass Pyrex type gt Plastic containers must be rated Thermal capable of withstanding temperatures in excess of 300 F Note 1 Inch of Space gt Load contents into compartment with a minimum of 1 Inch of spa
8. ce between walls and fan to allow for circulation as seen above Load gt Open the heating compartment door s and place the articles to be heated in the chamber then close the door s Start gt Apply power to the system by pressing the power switch to the ON position Each chamber has its own power switch A 9195 uL 3 Operation Set processing temperature Press SET and release Press one of the arrow keys either up or down to reach desired set point Press SET again to complete the change If dual chamber steps must be completed for both chambers Note The temperature setting may be changed at any time however reducing the temperature could activate the over temp alarm If alarm is activated and the control panel reads HI complete the following steps gt Press ALARM RESET to silence alarm gt Open door s to release heated air gt Ifthe display reads HI and alarm remains open door s and allow more cooling time Note If the alarm is activated under normal operating conditions turn power to specific chamber off and call your Mac Medical representative at 1 877 828 9975 Troubleshooting The Unit will not heat gt Check that the doors are closed gt Check that the power is on gt Check that the building power is activated gt Open doors and hold down door switch If no noise is heard from fan operation contact Mac Medical The unit heats bu
9. pellor and ume i with E Clip nut DO NOT over tighten nut Washer 13 Check to ensure that no other connections have been disturbed before pushing in drawer 14 Replace drawer and drawer scerws Door Hinge Reversal Top Cover of Cabinet 1 Turn off power switch and disconnect power to the unit 2 Remove top cover from unit The top cover has two separate layers to remove 6 Screws 3 Open the cabinet door and remove the screws from the side panels inside the cabinet 4 Screws 4 Remove all screws from the outer edge of the rear of the cabinet These are the screws that Inner Panel secure the side panels of the unit Number of Screws screws varies according to cabinet size 5 Carefully slide each side panel toward the rear of the cabinet 2 3 inches and then remove the entire panel 6 Tap out the door hinge pins glass door only 7 Remove the nuts from the rear of the hinge mount and remove the hinges 8 Remove the hole plugs from the front of the opposing side of the unit 9 Mount the hinges on the opposing side leaving them hand tight 10 Reinstall the door align and tighten the hinge mounts 11 Reinstall side panels and top 12 The door handles are now in the wrong position Remove the opposing screws in the side of the door and reinstall For dual steel door cabinets a LH intermediate hinge part no W0016 is needed to reverse doors Contact your retailer or service
10. t does not reach the selected temperature Allow enough operating time for the unit to reach the set point gt Open doors and hold down door switch If no noise is heard from fan operation contact Mac Medical Audible alarm and HI message alert gt alarm is activated when actual temperature exceeds the set point by ten degrees Audible alarm and HI message alert Upper Chamber Only Possible heat transfer from lower unit The temperature of the lower unit can be no more than 30 degrees F greater than the temperature of the upper unit This problem can be prevented by lowering the temperature of the lower unit or by reversing the contents of the two compartments Replacement upper Drawer Top Cover of Cabinet 1 Turn off power switch and disconnect power to the unit 2 Remove top cover from unit The top cover has two separate layers to remove 6 Screws 3 Disconnect the black and white wires connected to the fan motor 4 From inside the heating chamber remove the outer fan guard 4 Screws 5 Remove the inner fan guard 2 Screws 6 Remove the nut from the fan s drive shaft and remove the fan impellor The nut has left hand threads 7 From underneath drawer remove motor mounting screws and remove motor 3 Screws The E clip on the motor shaft may snag If so tilt the shaft at an angle and feed it through the drawer base 8 Install new motor Fan Guards
11. ut range Er 3 Sensor type mismatch HHHH Input temperature is higher than input range Er 4 Openthermocouple OPEN Input sensor is not bad connection broken connected wire Er 5 Electrical noise JIC Continuously Controler failure Control is inoperable Blank Display Operating Temperature Lock Optional On properly equipped cabinets the chamber temperature can be locked at a desired set point temperature This can be done by simply setting the desired temperature inserting the key and turning it to the lock position Once the key is in the lock position the temperature cannot be changed Be sure to store the key in a safe place 13
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