Sharp Refrigerator AC880 User's Manual
Contents
1. CHECK HIGH LOW This screen will display if the AC880 Charge Cylinder contains less refrigerant than the entered value When this occurs the charging Cylinder should be CHARGE SUITCH filled using the Fill Cylinder procedure on Page 5 Press the ENTER key to return to the Main Menu ENTER 10 Based on the vehicle manufacturer s instructions choose Charging through CHECK HOSES either the High Pressure Hose preferred or the Low Pressure Hose by pressing the top or bottom of the High Low Charge Selector Switch 12 Press the START ENTER key when finished programming The Display will read CHECK HOSES START ENTER Note Do Not Turn On The A C System SAE compliant refrigerant handling stations like the AC880 supply refrigerant the liquid ROSA phase Adding liquid refrigerant to running A C System may cause COMPRESSOR ON immediate A C compressor failure 11 Press the ENTER key to start the Automatic sequence Page 10 WEIGHT LB AUTOMATIC continued COMPRESSOR OFF HIGH PRESSURE SEE MANUAL CYLINDER FULL 60 TO CHARGE TIME LEFT XX MI PUMP ON PUMP OFF XX MI CONTINUE ENTER ADD OIL NOW CONTINUE ENTER UEIGHT XX X CHARGING RECYCLED XX X L EVAC HOSES ENTER DRAIN RECOVERED OIL NOW ENTER N N P B P 12 13 14 15 16 17 18 The Display will read the WEIGHT XX X LB2. COMPRESSOR The AC880 will recover and recycle refrigerant from the A C System and automatically cycle OFF when a vacuum is sensed This vacuum level can be seen on the Low Pressure Gauge The Display will read WEIGHT XX X LB COMPRESSOR OFF A small quantity of refrigerant will probably remain in the A C System as observed by an increasing pressure on the Low Pressure Gauge The AC880 will automatically cycle ON to continue recovering refrigerant if pressure rises to a preset level This automatic cycling will repeat resetting the Recycle Hold Timer each time If a Vacuum Time greater than zero minutes was entered in Step 6 the Vacuum Pump will turn ON the Display will read TIME LEFT XX MIN PUMP ON and the minutes remaining will count down on the Display The Vacuum Pump will turn OFF when the Display reads zero minutes Drain any recovered oil using the Drain Recovered Oil procedure on Page 7 This screen will display if there is an internal fault Turn the AC880 Power Switch OFF Contact RTI Technical Support This screen will display when the Charging Cylinder fills to capacity approximately 17 5 Ibs 8 Kg If this occurs the weight can be lowered using the Charging procedure on Page 9 before the AC880 can be used to recover more refrigerant Press the ENTER key to return to the Main Menu If a Vacuum Leak Check was selected by choosing Y in Step 7 the Display will read PUMP OFF XX MIN CONTINUE and the A
3. whether or not the AC880 pauses at the end of Vacuuming so that a vacuum XX MIN leak can be detected in the A C System Press the ENTER key to accept the Yes or No choice The choice entered is stored in memory and comes up as the default the next time the procedure is used The Display will read ADD OIL YIN 6 Press the Right Arrow key to move the cursor between Y and N to select whether or not the AC880 pauses at the end of Vacuuming or Vacuum Leak Checking to allow the Adding of Oil to the A C System Press the ENTER key to accept the Yes or No choice The choice entered is stored in memory and comes up as the default the next time the procedure is used The Display will read START 7 Press the ENTER key to start the Vacuum Pump ADD OIL Vacuum Pump will turn On the Display will read TIME LEFT XX MIN gt PUMP ON and the minutes remaining will count down on the Display The ENTER Vacuum Pump will turn OFF when the Display reads zero minutes 8 Ifa Vacuum Leak Check was selected by choosing Y in Step 5 the Display will read PUMP OFF XX MIN CONTINUE lt and the Attention Light will turn ON The elapsed time since the Vacuum Pump turned OFF will count up on the Display An increasing pressure on the Low Pressure Gauge is evidence of a vacuum leak in the A C System Press the ENTER key to return to the Main Menu or to Add Oil if selected in Step 6 9 If Add Oil was selecte
4. ENTER ON Refer to the figure below to locate the Access Hole on the metal circuit board cover to the Calibration Switch 3 Remove the plastic Calibration Tool from the mounting hole of the circuit board 4 Using the Keypad press the Up Arrow key five times to display WEIGHT UEIGHT CHARGING OVER CHA AMOUNT ENTER XX 5 GENTLY press the Calibration Switch with the Calibration Tool The Display will read WEIGHT XX X LB CHARGING 6 Press the Up Arrow key The Display will read OVER CHARGE AMOUNT X XX 7 Press the Up Arrow key to change the value of the field Press the Right RGE Arrow key to change to a different field The value entered will be stored until this procedure is run again and a new value is entered Press the ENTER key to accept the value The Display will then return to the Main Menu Note 1 oz 0 02835 Kg 1 Lb 0 45359 Kg 8 Replace the front panel of the 880 ACCESS HOLE CALIBRATION SWITCH OX CALIBRATION TOOL Calibration Tool Part No 360 81214 00 Page 13 SCHEDULED MAINTENANCE DAILY Check the oil level in the Vacuum Pump while the pump is running The Vacuum Pump Oil Level Sight Glass is visible through a hole in the Lower Rear Panel of the AC880 The oil level should be at the half way point of the glass If oil is not visible call Technical Support at 800 468 2321 Ext 259 M
5. connected to the Fill Port 13 The depressor in the hose may be adjustable so extend the depth of the depressor by using needle nose pliers A G Depressor Remove the valve core from the Fill Port 13 using a valve core remover There may be a machine fault if the above steps do not result in a successful increase of weight shown on the display after running the Fill Cylinder procedure for a minimum of 15 minutes Contact RTI Technical Support at 800 468 2321 Ext 259 for help Page 18
6. key is pressed 2 Using the Keypad press the Up Arrow key four times to display WEIGHT XX X LB FILL CYLINDER and press the ENTER key The Display will read CHECK HOSES START FILL COMPLETE 3 Open the LIQUID Valve on the Refrigerant Cylinder 14 connected to the Fill FILLED XX X Port 13 with the Yellow Hose 15 4 Press the ENTER key when ready to start filling the AC880 The Display will read WEIGHT XX X LB COMPRESSOR ON When the level is approximately 13 Ibs 6 kg 75 percent of the full capacity the AC880 ENTER HIGH PRESSURE will turn OFF the Display will read FILL COMPLETE FILLED XX X LB the amount of refrigerant removed from the cylinder and the Attention Light SEE MANUAL will turn ON Close the Liquid Valve on the Refrigerant Cylinder Note Press the RESET button on the Keypad to stop the Fill Cylinder procedure at any time CYLINDER FULL 5 Press the ENTER key to return to the Main Menu GO TO CHARGE While filling the Charging Cylinder this screen will display periodically concurrent with the Attention Light turning ON This is normal and nothing to be concerned about The screen should revert to normal after a few seconds kik This screen will display when the Charging Cylinder fills to capacity approximately 17 5 Ibs 8 Kg If this occurs the weight can be lowered PROBLEMS using the Charge procedure on Page 9 before
7. n 120V Page 15 PARTS IDENTIFICATION E IC A d L N C Y 3 f ER P N DESCRIPTION 1 026 80077 00 Combo Filter 3 8 Flare 04002 1 05 2 360 81192 00 Compressor Inlet Tube E p 4 360 81356 01 CompressorAssy780 5 026 80069 00 Combo Filter 3 8 Flare ji Short eu 360 81292 00 Solenoid MOV Sub 4 Assy 120V 7 360 81307 00 High Pressure Switch 261 Psig SPDT w Gask Page 16 PARTS IDENTIFICATION P N DESCRIPTION His d ox 1 024 80040 00 Rocker Switch SPDT 2 2 on on Amber 125V 6 2 024 80060 01 Circuit Board 120V 3 026 80065 03 Gauge 30 120 Psig 1 4 MFL 3 5 4 025 80128 00 Lamp Holder w Clear Bulb 120V 5 025 80127 00 Clear Bulb Bayonet Base 120V D IL gt 1 4 MFL 3 5 ZINC WE Page 17 TROUBLESHOOTING FILL CYLINDER PROCEDURE The cylinder of new refrigerant should be at ambient temperature or greater for b
8. IGH LOW SWITCH ENTER This screen will display if the AC880 Charge Cylinder contains less refrigerant than the entered value When this occurs the charging Cylinder LEVEL GO should be filled using the Fill Cylinder procedure on Page 5 Press the ENTER key to return to the Main Menu FILL CYLINDER 6 Based on the vehicle manufacturer s instructions choose Charging through ENTER eitherthe High Pressure Hose preferred or the Low Pressure Hose by pressing the top or bottom respectively of the High Low Charge Selector Switch 12 CHECK HIGH LOW Note not turn on the A C System SAE compliant refrigerant handling stations like the AC880 supply refrigerant in the liquid phase Adding CHARGE SWITCH liquid refrigerant to a running A C System may cause immediate A C compressor failure ENTER 7 Press the ENTER key to start charging DESERT The Display will read WEIGHT XX X LB CHARGING as refrigerant leaves CHARGING the Charging Cylinder The weight displayed will increase from zero to the Charge Amount entered in Step 5 plus a one ounce 0 03 KG Over Charge set at the factory to compensate for hose loss See Set Over Charge Amount on Page 13 to change the default value When the AC880 has finished the CHARGE COMPLETE Display will read CHARGE COMPLETE EVAC HOSES and the Attention Light will turn ON EVAC HOSES 8 Press the ENTER key to return to the Main Menu
9. ONTHLY Check the oil level in the Compressor while the motor is not running The Compressor Oil Level Sight Tube is on the left side of the lower section of the AC880 as viewed from the front Remove the front panel from the AC880 The oil level should be approximately one half inch high in the Sight Tube If oil is not visible or is above the top of the Sight Tube call Technical Support at 800 468 2321 Ext 259 Clean the Condenser to maintain high efficiency performance of the AC880 Disconnect power and remove the lower rear perforated panel and blow compressed air through the cooling fins of the Condenser to remove any debris Do not bend the fins on the Condenser coils Air flow will be restricted causing damage to the AC880 Replace the panel before applying power to the AC880 FILTER MAINTENANCE The AC880 automatically keeps track of Compressor Run Time The Display will read CHANGE FILTERS lt after every 25 hours every time the program returns to the Main Menu or whenever the AC880 is turned on as a reminder to change the filters Press ENTER to go to the Main Menu The INLET Combo Filter left side must be changed after every 25 hours of operation RTI part number 026 80077 00 The OUTLET Combo Filter right side must be changed after every 50 hours of operation RTI part number 026 80069 00 The Hour Counter is reset when the CHANGE FILTERS lt message is cleared Record the filter changes performed to t
10. OPERATION amp MAINTENANCE MANUAL 880 Refrigerant Handling System MAT CO Ga TOOLS S Manual P N 035 80749 00 TABLE OF CONTENTS AC880 Before Using the AC880 2 Safety Precautions 2 Using the 990 ds eres 3 Sell cus Du ae Duca fpe y aos wo e v dou dp os 4 Fill Charge Cylinder 5 Recover Recycle 6 Drain Recovered 7 Deep x23 8215253 8 Cage nur n 225525 he teh ete he te ete hE 9 Automates cau Se ee aa wade eR RUE 10 Access Stored Data 12 Set Over Charge Amount 13 Scheduled Maintenance 14 Filter Maintenance 14 Parts Identification 15 Troubleshooting Fill Cylinder Procedure 18 CONGRATULATIONS You have purchased one of the finest Recovery Recycling and Charging Machines available Your AC880 was proudly manufactured for MATCO Tools by Technologies Inc York Fill out and return the Warranty Card within 90 days to activate the warranty and free lifetime technical support TECHNICAL SUPPORT 800 468 2321 Ext 259 tech rtitech com BEFORE USING THE 880 Check for any shipping damage Place a claim with carrier if damage is discovered DO NOT
11. The A C System can now be turned on and tested by monitoring the High and Low Pressure Gauges ENTER 9 Close the Red and Blue Hose Valves disconnect them from the A C System and go to Page 6 Recover Recycle to Evacuate refrigerant from the Hoses Page 9 WEIGHT LB AUTOMATIC AUTOMATIC 1 Setup the AC880 and turn the Main Power Switch ON 2 Attach the Red and Blue Hoses to the A C System per the vehicle ENTER manufacturer s instructions and open the Red and Blue Hose Valves RECYCLE HOLD 3 Determine the refrigerant capacity of the A C System to be charged Note 1 oz 0 02835 Kg 1106 0 45359 Kg 4 Using the Keypad press the ENTER key when the Display reads WEIGHT ENTER XX X LB AUTOMATIC this is the default screen of the Main Menu Display will read RECYCLE HOLD TIME XX MIN e ENTER VACUUM The Recycle Hold Time is the amount of time that the AC880 waits for out TIME XX MIN TIME XX MIN gassing or for the pressure in the A C System being recovered to rise enough to automatically restart the recovery process The minimum value is two A minutes The value entered is stored in memory and displays as the default the ENTER next time the procedure is used LEAK 5 Press the Up Arrow key to change the value of the field Press the Right Arrow key to change to a different field Press the ENTER key to accept the TEST value The Display will rea
12. Time is the amount of time that the AC880 waits for out ENTER gassing or for the pressure the A C System to rise enough to automatically restart the recovery process The minimum value is two minutes The value entered is stored in memory and displays as the default value the next time the RECYCLE HOLD TIME XX MIN procedure is used 4 Press the Up Arrow key to change the value of the field Press the Right ENTER Arrow key to change to a different field Press the ENTER key to accept the value The Display will then read CHECK HOSES START CHECK HOSES 5 Press the ENTER key to start recovering and recycling with the AC880 START The Display will read the WEIGHT XX X LB COMPRESSOR The AC880 will recover and recycle refrigerant from the A C System and ENTER automatically cycle OFF when a vacuum is sensed This vacuum level can be seen on the Low Pressure Gauge The Display will read WEIGHT XX X LB UEIGHT XX X COMPRESSOR OFF COMPRESSOR ON A small quantity of refrigerant will probably remain in the A C System as observed by an increasing pressure on the Low Pressure Gauge The AC880 will automatically cycle ON to continue recovering refrigerant if pressure rises to a preset level This automatic cycling will repeat resetting the Recycle Hold WEIGHT LB Timer each time When the AC880 remains OFF for the duration of the Recycle Hold Timer value entered in Step 4 t
13. USE ADAMAGED UNIT Complete and return the Warranty Card to activate technical support service and warranty coverage These general instructions describe normal operation and maintenance situations encountered with the AC880 Failure to read and comply with these instructions or any one of the limitations noted herein can result in serious injury and or property damage A few minutes spent reading these instructions can make an operator aware of dangerous practices to avoid and precautions to take for his own safety and the safety of others The instructions should not be interpreted to anticipate every possible contingency The AC880 should not be operated or serviced by any person who has not read all the contents of this manual It is the responsibility of the owner user to operate the AC880 in accordance with all specifications and laws which apply Aregular schedule of inspection of the AC880 should be established and records maintained with special attention given to Hoses Compressor Oil Level Vacuum Pump Oil Level and Filters SAFETY PRECAUTIONS Recover Recycle and Charge only the refrigerant for which the machine is configured Wear safety glasses and protective gloves Refrigerant has a very low boiling point and can cause frostbite Follow the AC880 operating procedures sequentially to avoid prematurely disconnecting hoses or opening valves which may release refrigerant to the atmosphere Do not expose the AC880 to moisture or o
14. Y ATTENTION ES Oa SS Ore Low Pressure Gauge 7 Oil Charge High Side 13 Fill Port Keypad 8 Red Hose High Side 14 Refrigerant Cylinder Power Switch 9 Blue Hose Low Side 15 Yellow Hose w Anti blowback High Pressure Gauge 10 Oil Charge Low Side 16 Oil Drain Pressure Switch Display 11 Oil Charge Bottle 17 Oil Drain Attention Light 12 High Low Charge Selector 18 Oil Measuring Cup Page 4 WEIGHT LB FILL CHARGE CYLINDER AUTOMATIC EXTREMELY IMPORTANT Always connect Yellow Hose 15 to Cylinder 14 first and then connect WEIGHT LB other end of hose with anti blowback valve to Fill Port 13 on AC880 FILL CYLINDER Note For large capacity or multiple A C Systems where recharge will NOT be done between successive recoveries it may be desirable to skip ENTER this procedure CHECK HOSES 1 Setup the AC880 as shown on Page 4 and then turn the Main Power Switch ON An adapter is provided with the AC880 R134a which permits the Yellow START Hose 15 to be attached to the 1 4 SAE Flare fitting that is on some cylinders of R134a refrigerant ENTER Note AC880 uses 15 4 Ibs 7 Kg of refrigerant when Filling the first time If the Refrigerant Cylinder 14 is emptied the AC880 will WEIGHT LB appear to stop filling the Weight will stop rising and will stay in COMPRESSOR ON this condition until the RESET
15. d ENTER VACUUM TIME XX MIN ENTER 6 Press the Up Arrow key to change the value of the field Press the Right Arrow key to change to a different field Press the ENTER key to accept the value The Display will read PERFORM LEAK TEST Y N 7 Press the Right Arrow key to move the cursor between Y and N to select ADD OIL whether not the AC880 pauses at the end of Vacuuming so that a vacuum leak can be detected in the A C System Press the ENTER key to accept the ENTER Yes or No choice The choice entered is stored in memory and displays as the default the next time the procedure is used The Display will read ADD OIL ENTER CHARGE dad AMOUNT 8 Press the Right Arrow key to move the cursor between Y and N to select whether or not the AC880 pauses at the end of Vacuuming or Vacuum Leak A gt ENTER Checking to allow the Adding of Oil to the A C System Press the ENTER key x to accept the Yes or No choice The choice entered is stored in memory and displays as the default the next time the procedure is used The Display will read LOW LEVEL GO TO ENTER CHARGE XX X LB 9 Press the Up Arrow key to change the value of the field Press the Right Arrow key to change to a different field The value entered must be greater than zero Press the ENTER key to accept the value The Display will read CHECK FILL CYLINDER ENTER HIGH LOW CHARGE SWITCH
16. d by choosing Y in Step 6 the Display will read ADD OIL NOW CONTINUE and the Attention Light will turn ON Refer to Figure 4 and connect Oil Charge Bottle 11 to Oil Charge High Side 7 or Oil Charge Low Side 10 based on the vehicle manufacturer s instructions for charging high or low side Open the valve on the Oil Charge Bottle 11 and leaving it open OFF XX until the correct amount of oil has left the Oil Charge Bottle Close the valve on the Oil Charge Bottle and press the ENTER key to return to the Main Menu CONTINUE ENTER ADD OIL NOW CONTINUE ENTER Page 8 WEIGHT LB CHARGE AUTOMATIC 1 Setup the AC880 and turn the Main Power Switch ON 2 Attach the Red and Blue Hoses to the A C System per the vehicle manufacturer s instructions and open the Red and Blue Hose Valves AAA XX 3 Determine the refrigerant capacity of the A C System to be charged CHARGE Note 1 oz 0 02835 Kg 110 0 45359 Kg 4 Using the Keypad press the Up Arrow key three times to display WEIGHT ENTER XX X LB CHARGE and press the ENTER key The Display will read ENTER CHARGE XX X LB ANS DUE 5 Press the Up Arrow key to change the value of the field Press the Right AMOUNT XX X Arrow key to change to a different field The value entered must be greater than zero Press the ENTER key to accept the value The Display will read CHECK H
17. ed oil using the Drain Recovered Oil procedure on Page 7 Press the ENTER key to return to the Main Menu The A C System can now be turned on and checked by monitoring the High and Low Pressure Gauges Close the Red and Blue Hose Valves disconnect them from the A C System and go to Page 6 Recover Recycle to Evacuate refrigerant from the Hoses Page 11 WEIGHT XO ACCESS STORED DATA AUTOMATIC 1 Setup the AC880 and turn the Main Power Switch ON 2 Using the Keypad press the Up Arrow key five times to display WEIGHT XX X LB SETUP and then press the ENTER key The Display will read FILTER HOURS XX X HOURS See the Filter Maintenance section of the manual Page 14 for the procedure to change the filters The normal Filter Change Interval is after ENTER every 25 hours Note Press and hold the Right Arrow key and press the RESET key to remove the CHANGE FILTERS message 4 44 4 4 ENTER FILTER HOURS XX X HOURS 3 Press the Up Arrow key The Display will read TOTAL RECYCLED XXXX X KG 4 Press the Up Arrow key The Display will read TOTAL CHARGED TOTAL RECYCLED XXXX X KG XXXX X KG 5 Press the Up Arrow key to return to the Main Menu TOTAL CHARGED XXXX X KG Page 12 UEIGHT AUTOMATI XX X LB SET OVER CHARGE AMOUNT 1 Remove the front panel of the AC880 2 Setup the AC880 as shown on Page 4 and then turn the Main Power Switch 44444
18. est performance of the Fill Cylinder procedure Make sure the cylinder was not recently moved from an air conditioned storage room to a warm work area Place the cylinder on a block of wood if necessary to elevate it from a cool concrete floor Application of a heat belt to the cylinder will greatly enhance the speed Verify that the cylinder of new refrigerant 14 is up side down as shown in the figure on page 4 and that the cylinder valve is open If filling the Charge Cylinder from a DOT Cylinder make sure the hose is connected to the liquid port and the DOT Cylinder is right side up If the yellow hose 15 was connected to the Fill Port 13 the first time the AC880 was used there may be excessive air in the AC880 Charge Cylinder At least 4 Ibs of refrigerant must be recovered recycled into the AC880 Charge Cylinder following the Recover Recycle procedure on Page 6 During this process the air in the AC880 Charge Cylinder will be automatically purged Verify that the cylinder of new refrigerant has liquid refrigerant in it by shaking the cylinder or weighing the contents A minimum of 4 Ibs of liquid is required Verify that the Yellow Hose 15 is connected correctly from the Cylinder 14 to the Fill Port 13 an R12 AC880 the Fill Port is equipped with a valve core so depressor must be present in the hose end see figure The Yellow Hose 15 has a shut off valve on one end instead of an anti blowback valve which must be
19. he Display will read AMOUNT COMPRESSOR OFF RECYCLED XX X LB from the A C System and the Attention Light will turn ON 6 Close the Red and Blue Hose Valves and disconnect the hoses from the A C AMOUNT RECYCLED Pen 7 Press the ENTER key The Display will read DRAIN RECOVERED OIL NOW XX X Drain any recovered oil using the Drain Recovered Oil procedure on Page 7 8 Press the ENTER key to return to the Main Menu ENTER This screen will display if there is an internal fault Turn the AC880 Main DRAIN RECOVERED Power Switch OFF Contact RTI Technical Support OIL NOU This screen will display when the Charging Cylinder fills to capacity approximately 17 5 Ibs 8 Kg If this occurs the Weight can be lowered ENTER using the Charge procedure on Page 9 before the AC880 can be used to recover more refrigerant Press the ENTER key to return to the Main Menu HIGH PRESSURE SEE MANUAL CYLINDER FULL 60 TO CHARGE Page 6 DRAIN RECOVERED OIL Oil is separated from the recovered refrigerant and MUST be removed following EACH Recover Recycle procedure to determine the amount if any necessary to add into the A C System as follows Note The AC880 must be connected to power source Drain Recovered Oil may be done while the AC880 Vacuum Pump is ON 1 Press and hold the Oil Drain Re pressurization Switch 16 for 5 seconds then release it 2 Slowly open the Oil Drain Valve 17 to drain any oil w
20. hich may have been removed from the A C System Unless the A C System had previously been overfilled the AC880 will typically not remove enough oil to make replenishment necessary 3 Close the Oil Drain Valve 17 Press and hold the Oil Drain Re pressurization Switch 16 for 5 seconds This permits any residual Non Condensable Gas to be re circulated for reprocessing during the next recycle procedure Page 7 WEIGHT XX X LB DEEP VACUUM AUTOMATIC 1 Setup the AC880 and turn the Main Power Switch ON 2 Attach the Red and Blue Hoses to the A C System per the vehicle manufacturer s instructions and open the Red and Blue Hose Valves 3 Using the Keypad press the Up Arrow key two times to display WEIGHT XX X LB VACUUM lt and press the ENTER key The Display will read ENTER VACUUM TIME XX MIN This screen will display ifthe AC880 senses a pressure in either the High or Low Pressure Hoses When this occurs the A C System must be emptied using the Recover Recycle procedure on Page 6 Press the ENTER key to return to the HAS PRESSURE 4 Press the Up Arrow key to change the value of the field Press the Right TO RECYCLE Arrow key to change to a different field The value entered must be greater than zero Press the ENTER key to accept the value The Display will read PERFORM LEAK TEST Y N VACUUM 5 Press the Right Arrow key to move the cursor between Y to select
21. le at ambient temperature and atmospheric pressure However tests under controlled conditions have indicated that at pressures above atmospheric and with air concentrations greater than 60 percent by volume R134a can form combustible mixtures While it is recognized that an ignition source is also required for combustion to occur the presence of combustible mixtures is a potentially dangerous situation and should be avoided Under no circumstances should any equipment be pressure tested or leak tested with Air and R134a mixtures Do not use compressed air shop air for leak detection in R134a systems Page 2 USING THE 880 Note The purpose of this discussion is to familiarize the user with the features and functions of the AC880 Refrigerant Handling Station The procedures discussed in this manual assume that the AC880 has been set up in accordance with the figures which are referred to and that the AC880 has been connected to the proper power supply This manual does not illustrate correct A C service but rather how to correctly use the AC880 The AC880 is microprocessor controlled with a menu driven user interface All of the functions of the AC880 are accessed by pressing a few simple key strokes and following the prompts The internal Charging Cylinder is attached to a strain gauge measuring device load cell and the weight is electronically displayed The AC880 has a Fill Cylinder feature that allows refrigerant to be loaded direct
22. ly into the Charging Cylinder without going through the normal Recover Recycle mode When selected this feature allows the AC880 Charging Cylinder to be re filled in just a few minutes at which point it will automatically stop at approximately 13 Ibs 6 Kg The AC880 Recovers and Recycles simultaneously in a true single pass through the filters and stores the refrigerant in the Charging Cylinder where it is immediately available for use This process automatically stops at 17 5 Ibs 8 Kg or when a 15 Hg 0 5 Bar vacuum is sensed The AC880 will wait for a minimum factory default of two minutes for out gassing of cold refrigerant to raise the pressure back up to 3 psig 0 2 Bar which would cause the Recover Recycle process to start again and reset this two minute Recycle Hold Timer before displaying that the process is complete The Recycle Hold Timer can be changed every time a Recover Recycle procedure is run Longer times should be selected on colder days or for A C Systems with large liquid capacities Increasing this value may increase total time to Recover Recycle while decreasing the time may result in an incomplete Recovery of the A C System Refer to the chart below for guidelines on setting the Recycle Hold Timer The value entered is stored in the memory of the AC880 and becomes the default value each time it is set Non Condensable Gases are vented automatically during Recovery Recycle The Amount of refrigerant recycled is displa
23. ng the Keypad The value entered is stored in the memory of the AC880 and becomes the default value each time it is set The AC880 can dispense liquid refrigerant through either the High or Low Side Hose by changing the position of a selector switch As refrigerant leaves the AC880 the display will show an increasing weight to the programmed charge amount plus a factory set one ounce 0 03 Kg Over Charge Amount necessary for compensation of refrigerant loss in the hoses This Over Charge Amount can be changed to accommodate different operating conditions see Set Over Charge Amount on Page 13 An integrated heater automatically engages whenever Charging occurs The amount of refrigerant charged is added to the total amount charged and stored in the memory of the AC880 see Access Stored Data on Page 12 The AC880 can be programmed to perform the Recover Recycle Deep Vacuum and Charge in a completely Automatic mode AC880 will always go through the Recover Recycle procedure but will go immediately to the Recycle Hold Timer if the A C System is empty The following matrix outlines the most commonly used options that can be programmed ReswRegde X X x x x x x x cop OM p vacuum Leak _ __ _x x x _ Addo KX Charge KX Page 3 SETUP oar WN gt 72 1 J x 2 N PERS 2 5 w lt 3 ON
24. perate in wet areas Use the AC880 in locations with mechanical ventilation that provides at least four air changes per hour Hoses used with the AC880 must have shutoff devices within 12 inches 30 centimeters of the connection point to the A C System to minimize the introduction of Non Condensable Gas Air into the AC880 and the release of refrigerant when being disconnected Disconnect power before performing any maintenance or service on the AC880 Connect the AC880 to a properly grounded receptacle Do not overload the circuit Avoid using an extension cord with the AC880 If necessary use a good condition three wire grounded 14 AWG or larger extension cord of the shortest possible length Do not connect the AC880 to the liquid side of any A C System with a capacity greater than 4 Ibs 1 8 Kg Refrigerant in A C Systems having larger capacities must be recovered from the vapor side only Never connect the Red or Blue Hose on the rear of the AC880 to the Liquid Port of a Cylinder of Refrigerant to fill the Charge Cylinder Doing so may cause the Compressor to fail and void the warranty Avoid breathing refrigerant or lubricant vapor or mist Exposure may irritate eyes nose and throat If accidental system discharge occurs ventilate work area before continuing Additional health and safety information may be obtained from refrigerant and lubricant manufacturers Special Considerations with R134a R134a has been shown to be nonflammab
25. rack when only the INLET Combo Filter is changed versus when both are changed Change the filters as described below Remove front panel to service the Combo Filters Disconnect Flare Fittings from top and bottom of filters Remove mounting nuts and filters Transfer filter insulation material to new filter as applicable Connect Flare Fittings to top and bottom of filters Check for leaks and repair as necessary 1 2 3 4 5 Install new Combo Filters using hardware removed in Step 3 6 7 8 Replace front panel 9 Go to Page 12 Accessing Stored Data for instructions on how to reset the CHANGE FILTERS message Page 14 PARTS IDENTIFICATION PN DESCRIPTION 1 360 81555 00 Manifold Assy 880 Epigr 120V v U 2 024 80037 00 Contactor HP B ow AB ION 120V 3NO 1NC _ oF 2 3 024 80066 00 Rocker Switch SPDT 1 Visired Non lighted 360 80369 02 D P Switch R134A 5 360 81195 03 Vacuum Pump Assy JB i To NR ER 3 44 8 360 81314 00 Low Pressure Switch PURGE E pes 3 psig 15in Hg SPDT 4 gt Ee oS 7 360 81221 01 Charging Cylinder Assy tae 024 80035 00 Rocker Switch SPST 5 li aia m 360 81196 03 Check Valve Assy A 11 031 80001 00 Load Cell 35Kg with
26. the AC880 can be used Refer to Page 18 should to recover more refrigerant Press the ENTER key to return to the Main problems be encountered using the Fill Cylinder procedure Note The AC880 Charging Cylinder can also be filled from the GAS or VAPOR side of a cylinder by following the Recover Recycle Pressure differential between procedure on Page 6 the cylinder of new refrigerant and the internal AC880 charge cylinder greatly affect the a Calibration Procedure in order to prime the internal efficiency and speed of the Fill components Note The AC880 will use 1 1 Ib 0 5 Kg more refrigerant than the displayed value the very first time it is used or after performing Charge Cylinder procedure Note The Yellow Hose 15 can be removed from the Fill Port 13 and connected to either the Blue or Red Hose connection port on the rear of the AC880 to recover the refrigerant left in the Yellow Hose 15 using the Recover Recycle procedure on Page 6 Page 5 WEIGHT LB RECOVER RECYCLE AUTOMATIC 1 Setup the AC880 and turn the Main Power Switch ON 2 Attach the Red and Blue Hoses to the A C System per the vehicle manufacturer s instructions open the Red and Blue Hose Valves WEIGHT XX 3 Using the Keypad press the Up Arrow key one time to display WEIGHT XX X LB RECYCLE lt and press the ENTER key The Display will read RECYCLE RECYCLE HOLD TIME XX MIN The Recycle Hold
27. ttention Light will turn ON The elapsed time since the Vacuum Pump stopped will count up on the Display An increasing pressure on the Low Pressure Gauge is evidence of a vacuum leak in the A C System Press the ENTER key to continue with the Automatic sequence or RESET to return to the Main Menu If Add Oil was selected by choosing Y in Step 8 the Display will read ADD OIL NOW CONTINUE lt and the Attention Light will turn ON Refer to Figure 4 and connect Oil Charge Bottle 11 to Oil Charge High Side 7 or Oil Charge Low Side 10 based on the vehicle manufacturer s instructions for charging high or low side Open the valve on the Oil Charge Bottle 11 and leaving it open until the correct amount of oil has left the Oil Charge Bottle Close the valve on the Oil Charge Bottle and press the ENTER key to continue If a Charge Amount greater than zero pounds was entered in Step 9 the Display will read WEIGHT XX X LB CHARGING as refrigerant leaves the Charging Cylinder The weight displayed will be increasing from zero to the charge amount entered plus a one ounce 0 03 KG Over Charge set at the factory to compensate for hose loss See Setting Over Charge Amount on Page 13 to change the default value When the AC880 has finished the Display will read RECYCLED XX X LB HOSES and the Attention Light will turn ON Press the ENTER key The Display will read DRAIN RECOVERED OIL NOW Drain any recover
28. yed at the end of the procedure This value is added to the Total Amount Recycled and stored in the memory of the AC880 See Access Stored Data on Page 12 Less than 50 F 10 50 F 10 C to 80 F 26 5 C Greater than 80 F 26 5 C Recycle Hold Time An integrated Deep Vacuum Pump draws on both the High and Low Hoses ensuring complete evacuation of the A C System The amount of time that the Vacuum Pump has been programmed to run will count down on the display The value entered is stored in the memory of the AC880 and becomes the default value each time it is set The Low Pressure Gauge can be used to monitor a rise in A C System pressure When programmed to do so the AC880 will pause and start a count up timer indicating how long the Vacuum Pump has been off thus allowing the operator to determine if a vacuum leak is present based on increasing pressure over time A rapid rise in pressure indicates the presence of a large leak that should be repaired A slow rise in pressure may simply indicate that a longer Recycle Hold Time or Vacuum Time value should have been entered A relatively constant vacuum reading over a long period of time less than 2 InHg rise over ten minutes is the most accurate way to check for vacuum leaks The AC880 can also be programmed to pause to allow oil to be added to the System after vacuuming and prior to charging Charging is done from the internal Charging Cylinder The A C Capacity is entered usi
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