Operator Manual AeRO 75 Series
Voltage: 100-130 Volts AC Model No.: AeRO 75 Model No.: AeRO 75-DX Control No./ 2A0148-G1 Diagram: Control No./ 2A0148-G2 Diagram: Voltage: 200-240 Volts AC Model No.: AeRO 75 Control No./ 2A0148-G1 Diagram: Voltage: 100-130 Volts AC Voltage: 200-240 Volts AC Model No.: AeRO 75-DX Control No./ 2A0148-G2 Diagram: This manual illustrates the safety, operation, and maintenance features of the Cold Jet AeRO 75 Series. The build and revision level is located on the machine’s data plate.
Table of Contents Safety General Safety Precautions....................................................................6 Electrostatic Discharge...........................................................................7 Carbon Dioxide......................................................................................8 Blast Hose Safety Precautions...............................................................9 Finger Guard Precautions.......................................................................
Safety
Safety General Safety Precautions • • • • • • • • • • • • • • • • • • • • • • • • NEVER OPERATE the unit without first reading the Operator Manual. NEVER EXPOSE bare skin to CO2 ice. ALWAYS WEAR safety glasses, gloves, 32+NRR ear plugs & ear muffs. EVERYONE in the blast area must comply with all safety requirements. NEVER POINT the nozzle at anyone and ALWAYS exercise extreme caution when people are in the blast area. NEVER use a wire tie to hold the applicator trigger in the ON position.
Electrostatic discharge can be hazardous to the operator and the equipment. The static charge of CO2 varies with the amount of ice and humidity present. Follow these instructions to assure safe operation while blasting. Safety Electrostatic Discharge Safety Precautions A) The power outlet must have a good ground This is critical for electrostatic dissipation. If the ground is not connected a charge will build up on the unit or the applicator.
Safety Carbon Dioxide Safety Precautions Carbon Dioxide (CO2) is a naturally occurring gas and a normal by-product of breathing. However caution MUST be exercised! • This unit utilizes Carbon Dioxide (Dry Ice) as a blast media. • Dry Ice is very cold -110°F (-79°C) and may freeze skin instantly. • CO2 is a heavy gas, which means it will settle to the ground. • Always ventilate when blasting. • When blasting in a confined space, use of a Carbon Dioxide monitoring device is recommended.
• • ALWAYS tighten hose fittings with a wrench. Safety Blast Hose Safety Precautions NEVER USE hoses above the recommended working pressure. (see table) Part Number Description Working Pressure Machine 2N0177 3/4" Urebrade Hose 140 psi (9.65 bar) AeRO 75 AeRO 75-DX (Low Pressure) 2N0178 1" Urebrade Hose 140 psi (9.65 bar) AeRO 75 2N0179 1-1/4" Urebrade Hose 140 psi (9.
Safety Finger Guard Precautions Finger Guard The finger guard on the Cold Jet AeRO 75 series protects from a potential personal injury site located inside the machine. The guard, over the air exhaust port, must remain installed at all times to serve its function.
• For optimal performance it is recommended that the air supply dew point be -40oF (-40oC) or lower. • For optimal performance make sure the air is clean and free from oil and grit. • If needed, use an after-cooler and an air dryer with air filtration, to obtain desired air quality and dew point (air drying and filtration equipment may be purchased from Cold Jet).
Component Guide 13
• The Cold Jet AeRO 75 & 75-DX are portable units providing easy access for difficult to reach cleaning applications. • The Cold Jet AeRO 75 & 75-DX use dry ice pellets from either an onsite pelletizer or shipped in from a distribution center. • The blast machine requires a source of compressed air and standard electrical power for operation. • The blast machine contains an innovative, patented feeder and control system to maintain consistent pellet flow.
Component Guide AeRO 75 Front View Control Panel Nozzle Hangers Electrical Enclosure (SERVICE ONLY) Static Ground Cable 16 Blast Cable Connector Blast Hose Connector Fork-Lift Tubes
Control Panel Nozzle Hangers Electrical Enclosure (SERVICE ONLY) Static Ground Cable Blast Cable Connector Blast Hose Connector Component Guide AeRO 75-DX Front View Fork-Lift Tubes 17
Component Guide AeRO 75 Back View Hose Hangers Power Cord Hanger AC Power Cord Bleed Valve 18 Whip Check Air Supply Hose Connect
Component Guide AeRO 75-DX Back View Hopper Release Handle Hose Hangers Power Cord Hanger AC Power Cord Bleed Valve Whip Check Air Supply Hose Connect 19
Component Guide Control Panel Power Switch Power Indicator Feed Rate Hour Meter Machine Active light - When light is on machine is ready to blast (the hopper access door being open is an example of the light being off).
Component Guide Hopper Hopper Access Door - Used for accessing hopper for ice or debris removal. Unit will not operate when door is open.
Component Guide Slide Out Hopper (AeRO 75-DX Only) 1. Rotate release handle counter-clockwise. 2. Slide out hopper.
Fill Lid. Used for adding ice. Metal Grate Prevents large debris from entering the hopper.
Component Guide Inside (Standard Configuration) Hopper Assembly Includes two Vibrators and a Pneumatic Thumper. Safety Switch Disables the system when the door is open.
Air Pressure Knob - Used to set the blast air pressure to the desired value by turning the knob prior to blasting. Component Guide Inside (Optional Regulator Configuration) Optional Inline Pressure Regulator Used for precise blast air pressure control.
Differential pressure gauge - Indicates if the filter needs changing. Component Guide Optional (Coalescing/Particulate Air Filter) Air Filter - Used to extract moisture and dirt from the supply air. Drain Valve - Used to drain excess water.
Component Guide Single Feed Blast Applicator (AeRO 75 Only) Blast Cable Connector JICM Connector Rotation Stop Protects blast cable from damage Retention Collar Trigger Also breaks up ice if pressed rapidly Safety Switch Safety ON 28 Safety OFF
(AeRO 75-DX Only) Blast Cable Connector JICM Connector Rotation Stop Protects blast cable from damage Retention Collar Component Guide Tri-Mode Blast Applicator Trigger Also breaks up ice if pressed rapidly Safety Switch Tri-Mode Speed Control Up - Sets speed to 2/3 of Max Middle - User Set Speed Down - Purge (removes nozzle clogs) Safety ON Safety OFF 29
Operation 31
Operation Starting Up 1 Make sure the Power Switch and bleed valve are in the OFF (O) position. 2 Attach the blast hose and the control cable to the machine. 3 Securely attach the applicator to the blast hose and control cable. Make sure the Rotation Stop is facing UP. Verify that a nozzle is locked into the Blast Applicator. 4 Attach the whip-check to the air supply hose and extend it as far as possible on the air hose. Attach the Air Supply Hose to the inlet air pipe on the back of the machine.
Operation 5 Make sure the hopper is dry, clean, and free of debris. 6 Connect the Static Ground Cable to the material to be cleaned or to an electrically conductive supporting structure of the material. 7 Turn on the air compressor, and allow the air supply hose to pressurize. Check for leaks. 8 Plug the power cord into an electrical outlet.
Operation Blasting 1 Push the Applicator Safety Switch forward. 2 Purge the system by blasting with air for 1 min. How to Purge: Before loading the pellets into the hopper, turn the feed control to its maximum setting and pull the trigger. After purging, return the feed control to the desired blast setting. 3 Pour the pellets into the hopper. IMPORTANT 4 Close the Fill Lid. Pressing and Releasing the Applicator Trigger makes the thumper break up any ice clumps.
1 Stop blasting and push the safety switch back. (This activates the safety). 2 For the AeRO 75 slide open the hopper access door and scoop out the remaining dry ice from the hopper. For the AeRO 75DX, just slide the hopper out to empty any remaining ice. 3 Turn OFF the compressed air supply. 4 Turn the power switch OFF (O) to shut off the power. 5 Turn the Bleed Valve ON (I) to evacuate all remaining pressure. 6 If open, close the Fill Lid.
Maintenance 37
Maintenance Troubleshooting Problem Machine will not start GREEN light is not on Machine will not blast Check This Solution Is the unit plugged in? If NO...Plug Unit in. Is the power switch in the ON (I) position? If NO...Push power switch to I. It still will not start up? Call Cold Jet for support. Is the machine active light (the BLUE light) on? If NO... Close the hopper access door and reset the Estop. Also make sure the slide-out hopper is latched closed (DX only).
Make sure the gauge is in the GREEN. If not then change the filter element to avoid damage to the machine Maintenance Daily Maintenance Drain the water out of the optional Coalescing filter by opening the drain valve at the bottom of the filter. Drain water out of the air filter before using the machine. (Turn the bleed valve ON (I) to drain the water). While in operation check the pressure gauge for damage. Check the air and blast hoses for damage, like cuts or scuff marks.
Maintenance Weekly Maintenance Look through the hopper to check the rotor for nicks or gouges. (Use a flashlight). Make sure the nozzle airflow exit end is not deformed or burred.
Maintenance Monthly Maintenance Check the thumper for worn or damaged parts and also check for loose fittings. Check the Vibrators for vibration. Also check the two mounting bolts, on each vibrator, to verify they are secure. Check the Air Filter by unscrewing the base a 1/4 turn clockwise.
Maintenance Biannual Maintenance If you are not an authorized Cold Jet Service Technician, please call to schedule service. +1-800-777-9101 or +1-513-576-8981 or email: service@coldjet.com (Europe: 32 (0) 13 53 94 47, Office Hours: GMT +1.00 or email: service.eu@coldjet.
Appendix 43
Appendix Specifications AeRO 75 AeRO 75-DX Weight (empty): 295 lbs. (134 kg.) 315 lbs. (143 kg.) Pellet Capacity: 75 lbs. (34 kg.) 75 lbs. (34 kg.) Pellet Delivery Rate: Variable From: 0 - 7.1 lbs/min (0 - 3.2 kg/min) Variable From: 0 - 7.1 lbs/min (0 - 3.2 kg/min) Power Requirements: 100 - 140 volts AC single phase (50/60 Hz) 9 amps or 200 - 240 volts AC single phase (50/60 Hz) 4.3 amps 100 - 140 volts AC single phase (50/60 Hz) 9 amps or 200 - 240 volts AC single phase (50/60 Hz) 4.
Appendix Tips Blasting Techniques • • • • • • • • • POSITION the blast hose for maximum maneuverability before blasting. DO NOT kink the blast hose. HOLD nozzles PERPENDICULAR to the surface for fastest cleaning (recommended for most applications). OPTIMUM STAND OFF distance is 2 in (5 cm) for most nozzles. NEVER ALLOW foreign objects to enter the hopper! DO NOT abuse the blast applicator or cable. BLAST with AIR ONLY for 1 minute after breaks (to melt any water ice build-up inside the blasting unit).
Appendix Blast Air Quality Up to 140 psi (9.6 bar) The Cold Jet AeRO 75 series blast machine works best when the supply air is free of any debris and has a dew point of -40°F (-40°C). If Using Plant Air (Central Compressed Air System) Manufacturing plants, with central compressed air systems, should have an After Cooler and a 2-stage coalescing filter assembly downstream of the receiver tank. Hot metal pipes are an indication this is needed.
Portable diesel air compressors are mainly used for shop tools, not dry ice blasting units and are therefore not able to cool or remove air moisture. An after cooler with a 15°F (-9°C) approach is required to reduce the discharge air temperature 180°F (82°C) to within 15°F (-9°C) of ambient air temperature. Appendix If Using Portable Air (minimum of 185 cfm - 5.6 m3/min) Without the after cooler, the following will occur: 1 Incoming air moisture will rapidly cool and freeze at the AeRO 75 (75DX) feeder.
Appendix Cold Jet Services • • • • • • • • • • • Equipment Upgrades Preventative Maintenance Repairs, and Refurbishing Training Parts and Accessories Spare Parts Kits Extended Service Plans Equipment Rental Contract Cleaning Services Engineered Solutions 24-Hour Technical Phone Support +1-800-777-9101 or 1-513-576-8981 (Europe: 32 (0) 13 53 95 47, Office Hours: GMT +1.00) Email Technical Support: service@coldjet.com (Europe: service.eu@coldjet.
General mandatory action Off General danger Wear ear protection Skin puncture from pressurized air jet Read operator manual Standby Appendix Machine Symbols On Wear eye protection Electrical shock or electrocution Ready Read service manual Emergency stop Loud noise Wear safety gloves Applicator ready to blast Lock out in De-energized state Extreme cold Feed Unplug before opening Hand cut from impeller blade Flying debris Maintain safe pressure CO2 Variable feed CO2 only No foreign obje
Appendix
Warranty Information Cold Jet® LLC (“CJ”) warrants its products (“Equipment”) provided under this Agreement to be free from defects in materials and workmanship for a period of 12 months, under normal use, maintenance and service as stipulated in the Operator’s Manual. CJ warrants that the equipment will be in good working order on the Date of Shipment and will conform to CJ’s official published specifications. The warranty period is 12 months for CJ manufactured Equipment.
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