Technical Description

EVS 7000/9000 Range

System Description

The Solder Recovery System EVS 1000 to 9000 range of equipment provides a closed environment system for the recovery of solder from the solder dross produced during the wave soldering process. The new EVS 7000/9000 replaces the range of EVS 3000/6000 solder recovery systems. The EVS 7000 replaces the EVS 3000 and the EVS 9000 replaces the EVS 6000. These new machines have the same capacities and cycle times as the previous machines. The EVS 7000/9000 normally bought as a system comprising of a trolley/cart, a drop through chute for the automatic collection of spent solder dross/waste and an integral standalone filtration unit consisting of a multistage filter and a high flow fan. This system is designed to be a stand alone unit which can operate at the convenience of the user company, running off a single phase power supply without the need for external extraction or ducting of fumes exhausted from the process.

This system is designed for use with hot solder dross . The double patented product and process uses heat, pneumatic pressure and magnetic current to extract the solder from the dross at temperature. The solder collected from the process should be returned once cooled to the same solder bath the dross was taken from. Please ensure that the solder is returned to the original bath to maintain integrity of your solder analysis. The EVS heats the loaded dross to the preset operating temperature. Pressure is then applied via the pneumatic cylinder in order to compress the dross loaded into the machine. This process enables the majority of retained solder in the solder dross to be extracted. The spent dross and impurities are deposited from the operating chamber into the dross bucket via the dross chute as one automated process. No operator involvement is required subsequent to the pressing of the start button.

The machine processing cycle is performed automatically. All user-accessible parts of the system are monitored and electrically interlocked to ensure correct positioning during operation and to provide safe and reliable operation.

Forced air extraction within the machine ensures that a negative pressure is maintained and any gaseous material within the dross entering into the air passes through a multi-stage filter, which removes particulate matter down to 0.6 micron and neutralises the gases via an impregnated carbon gas filter media.

The machine carries the CE approval marking.  

The system should be assembled on the trolley as per assembly instructions. On mounting the Solder Recovery System on the top trolley shelf open the cover and check all screws and fixings are in place and tightly retained. Check for any loose wires, any loose nuts or bolts particularly on the pneumatic fixing points, the door, the bridge plate and chamber retention points and any electrical and earthing points, and if found please report to your equipment supplier or local representative.

Features

The EVS 7000/9000 offers the following features as part of the machine

• 10/20KG/22/44 Lbs capacity for hot dross
• Automated collection of spent dross
• Integral treatment of fumes and vapours emitted from process are handled by a multi-stage filtration system which creates negative internal pressure within the EVS and when loading with dross
• Solder tray lock preventing removal of solder tray during process
• Loading Hopper Lid Lock to prevent accidental loading during cycle
• Solder tray air knife to accelerate cooling of recovered solder
• Coded fail safe proximity switches used on both the solder collection tray and the integral loading hopper
• Adjustable dross chute to automate dross handling into dross bin
• Increased heat capacity allowing a faster warm up time
• Integral electronics including liquid crystal display giving operator information on the machine status and status of current cycle and service prompts
• Display feedback of possible cycle faults via the liquid crystal display
• Simplified heat control via one thermocouple with second Thermocouple on duplicated safety system
• Simplified wiring directly from the machine outputs to the connector blocks on the circuit board
• Improved door seal arrangement to enhance door integrity during recovery process
• Rear dross chute enabling easy or automatic removal of dross from behind the piston during cycling simplifies maintenance and cleaning
• Light Stack both warning and functional.

Integral Air Filtration and Extraction – Stand Alone Filter (SAF)

The fume extraction unit draws a current of air across the heating chamber, and filters this air before returning it to the atmosphere. This process removes gaseous particulate, which may be produced during the solder recovery process or during the dross ejection phase of the process.

As details under Routine Maintenance, it is important that the input slots and the extraction port are kept clear, as any reduction in the rate of airflow will affect the performance of the equipment.

1. SPECIFICATIONS

The manual relates to the EVS 7000/9000.

1.1 POWER REQUIREMENTS

Minimum 210 volts x 13 amps
Maximum 240 volts x 13 amps
Single Phase 50 / 60 hz
Electrical consumption 2100 Watts peak

NB: The unit Must be earthed at all times when in operation

NB: Only during compression and cooling cycle 6 to 10 minutes approximately.

OPTIONS

CONTROLS

SAFETY FEATURES

Fail safe cut out switches for EVS and SAF
Emergency Stop
Automatic over temperature cut out
Fuse protected circuits
Additional temperature control for H-Bands
Solid State Relays
Integral Hopper Lock
Solder Tray Lock
Air Knife on solder tray
Air Knife of dross chute
Automatic Cover Open Cut Out
Pull out Tray for solder ingot tray
Pull out Tray for filter box
Pull out tray for dross bin/bucket