OPERATION & MAINTENANCE MANUAL RHS2680 Refrigerant Handling System 4075 East Market Street York, Pennsylvania 17402 Phone: 717-840-0678 Fax: 717-755-8304 E-mail: rti@rtitech.
TABLE OF CONTENTS Startup & Safe Operation . . . . . . . . . . . . . . . . . . . 1 Introduction to the RHS2680 . . . . . . . . . . . . . . . . . 2 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Keypad Functions . . . . . . . . . . . . . . . . . . . . . . . . . 4 Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recover (Recycle) . . . . . . . . . . . . . . . . . . . . . . . . . 6 Purge Air - Drain Oil . . . . . . . . . . . . . . . . . . . . . . .
STARTUP & SAFE OPERATION 9 Do not use a damaged unit. Check for shipping damage and place a claim with carrier if damage is discovered. 9 Return the Warranty Card to activate technical support service and warranty coverage. 9 The RHS2680 should not be operated or serviced by any person who has not read all the contents of this manual. 9 This manual describes normal operation and maintenance for the RHS2680.
INTRODUCTION TO THE RHS2680 The RHS2680 is a complete refrigerant management center featuring state-of-the-art electronic control with digital weight scale measuring of refrigerant. Operation of the RHS2680 is intuitive and very easy to master. Following is an overview of the operation and features of the RHS2680: RECOVER (RECYCLE) Refrigerant is recovered from the A/C, impurities (particulates, oil, moisture and air) are removed and the refrigerant is stored in the internal cylinder.
CONTROL PANEL PURGE CHART - R12 0 F PSIG 32 44 34 46 36 48 38 50 40 52 42 54 44 57 46 59 48 61 50 64 52 66 0 F PSIG 54 69 56 72 58 74 60 77 62 80 64 83 66 85 68 88 70 92 72 95 74 98 0 F PSIG 76 102 78 105 80 108 82 112 84 115 86 118 88 123 90 127 92 130 94 135 96 138 0 F 98 100 102 104 106 108 110 112 114 116 118 PSIG 143 147 150 155 160 165 168 173 178 183 188 PURGE CHART - R134a 0 F PSIG 32 42 34 44 36 46 38 49 40 51 42 54 44 56 46 59 48 61 50 64 52 67 0 F PSIG 54 70 56 72 58 76 60 78 62 82 64
KEYPAD FUNCTIONS Scroll Key Press to scroll through function options or to increase numeric values shown on the display. Cursor Key Press to move flashing cursor on the display prior to numeric entries. Go Key Press to confirm data entry and continue. Stop Key Press to halt program sequence. Units Key Press to change unit of measure for weight displays. - CAUTION Always use fingers to operate keypad. Use of sharp objects will cause damage.
START-UP 1. Turn Function Valves and Purge Valves on RHS2680 to OFF. Connect yellow hoses of gauge manifolds to ports on rear of RHS2680. Close high and low valves on gauge manifolds. 2. Connect red and blue hoses from the gauge manifold, for the refrigerant to be processed, to A/C system and open hose valves. 3. Connect power cord of RHS2680 to properly grounded power source. Avoid using an extension cord.
RECOVER (RECYCLE) 1. Turn Function Valve on RHS2680 to RECOVER. 2. Open high and low valves on gauge manifold. 3. The display will show the weight of refrigerant in the RHS2680 cylinder and indicate the unit is recycling. 4. When the A/C system pressure is in a vacuum the display will show RECYCLE COMPLETE CHECK PRESSURES. Wait two minutes to see if the pressure in the A/C increases (due to liquid refrigerant vaporizing). The RHS2680 will automatically begin recycling again if the pressure rises above zero.
VACUUM 1. MAKE SURE THE GAUGE MANIFOLD PRESSURES ARE ZERO OR LESS. If not, a recover procedure must be performed before starting the vacuum procedure. 2. Turn Function Valve on RHS2680 to VACUUM. 3. Open high and low valves on gauge manifold. 4. The display will show the weight of refrigerant in the RHS2680 cylinder and indicate the unit is vacuuming. 5. At the end of the desired vacuum time, press the stop key and close the high and low valves on the gauge manifold. 6.
MAINTENANCE The RHS2680 will provide many years of reliable service if properly maintained. Following is a checklist of items which will ensure the RHS2680 performs at peak efficiency and presents an image to your customers that your shop performs high tech A/C service. 1. Use tool tray for storage of tools and accessory adapters. 2. Store gauge manifolds and hoses properly when not in use. Avoid hanging hoses over the top of the unit. 3. Keep the exterior surfaces clean.
PARTS LIST P/N DESCRIPTION P/N DESCRIPTION 1 360-81574-00 Expansion Valve Assy 8 026-80069-00 Combo Filter 3/8 Flare (Short) 2 024-80037-00 Contactor ½ HP 120V 3NC/1NC 9 025-80304-00 Solenoid Valve 120V 3 026-80077-00 Combo Filter 3/8 Flare (Long) 10 360-81309-00 Low Pressure Switch 3psig - 8InHg 4 360-81307-00 High Pressure Switch 261 psig 11 360-80280-00 Condenser Assy 5 360-81670-01 Compressor Assy 2680 (120V) 12 360-80416-00 Fan Assy w/Pins 120V 6 360-81547-01 Assy H
PARTS LIST P/N DESCRIPTION 1 360-81739-00 Main Ball Valve Assy (2680) 2 024-80070-00 Keypad Overlay 680/550/2860 3 026-80071-02 Purge Gauge Assy 0-500 psig 4 360-81576-00 Purge Ball Valve Assy (2860) 5 024-80072-00 Circuit Board 680/550/2860 6 024-80066-00 Switch Rocker SPDT (on-on) Visi-Red Page 10
Page 11
