OPERATION & MAINTENANCE MANUAL AC2880 Refrigerant Handling System Manual P/N 035-80751-00
TABLE OF CONTENTS Startup & Safe Operation . . . . . . . . . . . . . . . . . . . . 1 Introduction to the AC2880 . . . . . . . . . . . . . . . . . . . 2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Keypad Functions . . . . . . . . . . . . . . . . . . . . . . . . . 5 Fill Charge Cylinder . . . . . . . . . . . . . . . . . . . . . . . . 6 Recycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTUP & SAFE OPERATION ' Do not use a damaged unit. Check for shipping damage and place a claim with carrier if damage is discovered. ' Return the Warranty Card to activate technical support service and warranty coverage. ' The AC2880 should not be operated or serviced by any person who has not read all the contents of this manual. ' This manual describes normal operation and maintenance for the AC2880.
INTRODUCTION TO THE AC2880 The AC2880 is a complete dual refrigerant management center featuring state-of-the-art electronic control with digital weight scale measuring of refrigerant. Operation of the AC2880 is intuitive and very easy to master. Operational functions of the AC2880 can be performed individually or in an automatic sequence. This Operation Manual first describes each of the functions and then gives an overview of combining the functions into an automatic sequence.
CONFIGURATION 1 Port for R134a High Side Red Hose 10 Yellow Hose 2 Port for R134a Low Side Blue Hose 11 Power Cord 3 Port for R12 High Side Red Hose 12 Purge Gauge R134a 4 Port for R12 Low Side Blue Hose 13 Purge Switch 5 Port for Oil Charge - R134a High Side 14 Oil Drain Valve 6 Port for Oil Charge - R12 High Side 15 Oil Measuring Cup 7 Fill Port for R134a (Attach Anti-Blowback Valve end of Yellow Hose to port) 8 Fill Port for R12 (Attach Ball Valve end of Yellow Hose to port) 9 Cylinder of Ne
CONTROL PANEL 1 Low Pressure Gauge - R12 2 High Pressure Gauge - R12 3 Low Pressure Gauge - R134a 4 High Pressure Gauge - R134a 5 High Side In/Out Valve - R12 6 Low Side In/Out Valve - R12 7 Function Indicator Light - R12 selected with Cursor Key 8 Power Switch - Illuminated 9 Low Side In/Out Valve - R134a 10 High Side In/Out Valve - R134a 11 Function Indicator Light - R134a selected with Cursor Key 12 Attention Indicator Light 13 Keypad Page 4
KEYPAD FUNCTIONS Scroll Key Press to scroll through function options or to increase numeric values shown on the display. Cursor Key Press to scroll flashing cursor on the display prior to numeric or Yes/No entries. Also used to select R12 or R134a refrigerant. Enter Key Press to confirm data entry. Reset Key Press to halt program sequence and return to Main Menu. Units Key Press to change unit of measure for weight displays. - CAUTION Always use fingers to operate keypad.
FILL CHARGE CYLINDER N N N EXTREMELY IMPORTANT N N N Always connect Yellow Hose (10) to Cylinder (9) first and then connect other end of hose with anti-blowback valve to Fill Port (7 or 8) on AC2880. This procedure is used to quickly transfer refrigerant from a cylinder of recycled or new refrigerant into the AC2880 charge cylinder. The fill process will continue until the charge cylinder fills to 13 lbs. Press the [RESET] key during the fill process if a smaller total amount of refrigerant is desired. 1.
RECYCLE 1. Connect red and blue hoses to A/C and open valves. 2. Turn on power. 3. Press [>] key one time. 4. Observe displays as shown to the left and enter data when prompted. 5. Press [#] key to move from one display to the next. Data Entry & Error Messages RECYCLE HOLD TIME The AC2880 will recover refrigerant from the A/C until a stable vacuum is sensed for at least two minutes. Times greater than two minutes can be entered for the recycle hold time. The time entered will be saved as the default.
DEEP VACUUM 1. Connect red and blue hoses to A/C and open valves. 2. Turn on power. 3. Press [>] key two times. 4. Observe displays as shown to the left and enter data when prompted. 5. Press [#] key to move from one display to the next. Data Entry & Error Messages A/C HAS PRESSURE - GO TO RECYCLE (Note A) This message will be displayed if there is still refrigerant in the A/C. This refrigerant must be recycled before a deep vacuum can be performed.
PURGE AIR - DRAIN OIL 0 F 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120 R12 R134a 42 44 46 48 50 52 54 57 59 61 64 66 69 72 74 77 80 83 85 88 92 95 98 102 105 108 112 115 118 123 127 130 135 138 143 147 150 155 160 165 168 173 178 183 188 193 40 42 44 46 49 51 54 56 59 61 64 67 70 72 76 78 82 85 88 92 95 97 104 107 110 114 118 123 127 130 135 140 145 148 153 157 163 167 173 180 185 190 195 200 207 21
CHARGE 1. Connect red and blue hoses to A/C and open both hose valves. 2. Open either the low or high side In/Out valve on the AC2880 according to the A/C manufacturer’s recommendation for charging the system. 3. Do not run the A/C during the charge procedure. 4. Turn on power. 5. Press [>] key three times. 6. Observe displays as shown to the left and enter data when prompted. 7. Press [#] key to move from one display to the next.
AUTOMATIC 1. Connect red and blue hoses to A/C and open valves. 2. Turn on power. 3. Press [#] key to select automatic mode. 4. Observe displays as shown to the left and enter data when prompted. 5. Press [#] key to move from one display to the next. Data Entry & Error Messages RECYCLE HOLD TIME The AC2880 will recover refrigerant from the A/C until a stable vacuum is sensed for at least two minutes. Times greater than two minutes can be entered for the recycle hold time.
AUTOMATIC (Continued) HIGH PRESSURE - SEE MANUAL (Note B) A condition of high pressure during the recycle process will cause this message to be displayed. Turn the power off and contact RTI Technical Service for assistance. CYLINDER FULL - GO TO CHARGE (Note C) If the charge cylinder fills to a maximum capacity of 17.5 lbs. during the recycle process this message will be displayed. Press the [#] key to return to the main menu and go to the charge procedure to transfer refrigerant to an external cylinder.
STORED DATA 1. Turn on power. 2. Press [>] key five times. 3. Observe displays as shown to the left. 4. Press [#] key to move from one display to the next. Information Displayed FILTER HOURS This display shows total hours that refrigerant has been recycled through the filtering system of the AC2880. After every 25 hours, the display (shown to the left) will remind the technician that one or both filters should be changed as soon as possible.
SET OVER CHARGE AMOUNT A one ounce over charge is added during each charge procedure to compensate for refrigerant loss in the service hoses. This can be programmed to accommodate different operating conditions as follows: 1. Remove rear panel by releasing the two black latches on each side of the AC2880. 2. Close all valves and turn on power. 3. Press [>] key five times. 4. Observe displays as shown to the left and refer to the illustration below for the following steps. 5.
MAINTENANCE The AC2880 will provide many years of faithful service if properly maintained. Following is a checklist of items which will ensure the AC2880 performs at peak efficiency and presents an image to your customers that your shop performs high tech A/C service. ^ Use tool tray for storage of tools and accessory adapters. Do not place tools on the front surface of the unit. ^ Coil and store hoses in the storage pockets on the side of the AC2880 when not in use.
P/N DESCRIPTION PARTS LIST - R12 SIDE 1 024-80035-00 Rocker Switch SPST (Mom-On) AC2880 2 026-80071-02 Purge Gauge 0-500 psig 3 360-81309-00 Low Pressure Switch 3psig - 8InHg 4 360-81436-00 Solenoid 1S22 Assy 5 360-81428-00 Internal Cylinder Assy (DOT) 6 360-81426-01 Assy Heater Belt 120V 7 360-81385-00 Solenoid 1S25 Assy 8 031-80000-00 Load Cell 35Kg 9 360-81307-00 High Pressure Switch 261 psig 10 360-80280-00 Condenser Assy 11 360-81434-00 Manifold Assy R12 12 026-800
PARTS LIST - R134a SIDE AC2880 P/N DESCRIPTION 1 360-81435-00 Manifold Assy R134a 2 026-80077-00 Combo Filter 3/8 Flare (Long) 3 026-80069-00 Combo Filter 3/8 Flare (Short) 4 360-81391-00 Tube Assy Compressor Inlet R134a 5 024-80037-00 Contactor ½ HP 120V 3 NO & 1 NC 6 360-81386-00 Solenoid 2S25 Assy 7 360-81382-00 Solenoid 2S12 Assy 8 360-81356-01 Compressor Assy 120V 9 024-80035-00 Rocker Switch SPST (Mom - On) 10 026-80071-02 Purge Gauge 0-500 psig 11 360-81309-00 Low P
PARTS LIST - CONTROL PANEL - AC2880 P/N DESCRIPTION 1 026-80065-03 Low Gauge 30 InHg - 120 psig 2 022-80027-00 In/Out Valve 2-Way Open CCW 3 024-80040-00 Rocker Switch SPDT - Amber 125V 4 024-80059-00 Keypad Membrane 5 026-80071-03 High Gauge 0"-500 psig 6 025-80128-00 Lamp Holder w/Clear Bulb 120V 7 025-80131-00 Lens Assy Amber 8 025-80127-00 Clear Bulb Bayonet Base 120V 9 024-80067-01 Circuit Board (2780E/2880) 120V Page 18
TROUBLESHOOTING FILL CYLINDER PROCEDURE 1. The cylinder of new refrigerant should be at ambient temperature or greater for best 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. 2.