ULTRA A FEATURES
ADJUSTABLE PLATING CURRENT
Rotex Ultra A series silver recovery units have a 'state of the art' automatic plating current control to adjust the plating as a direct response to the concentration of silver in the fixer solution.
As the silver is depleted from the solution the plating current will gradually reduce to zero. When an increase of silver is detected, the plating current will rise. The controller automatically monitors the silver concentration on a 6 minute cycle.
ROTATING CATHODE
Rotex Ultra A silver recovery units feature a motordriven cathode to continuously renew the silver ion in the lquid contacting the cathode, also called the cathode 'junction'. Without agitation of the solution the junction would be quickly depleted of its silver ions and undesirable chemical reactions would occur. The rotating cathode allows for a compact machine and was pioneered, patented and became the basis of the name 'Rotex'.
DIRECT DRIVE
Rotex Ultra A silver recovery units use direct-drive gearmotors without belts, gears, drivers, bushings, or other components which require service or replacement. The gearmotor shaft is sealed so that fumes from the fixer will not enter the electrical enclosure.
POWER SUPPLY
The power supply features a center-tapped transformer that is wound for low impedance and cool, efficient operation. The plating current is rectified from AC (alternating current) to DC (direct current) by a full way center tap bridge rectifier that operates more efficiently (makes less heat) than other types of rectifiers. The full-wave center tap bridge rectifier is cooled by a fan that also draws fresh air into the power supply enclosure, thus ensuring a long life. An ammeter is featured to indicate the plating current in 'Amperes' and a circuit breaker is provided for convenient protection - no fuses to replace - ever!
CATHODE CONNECTION
Plating current is applied to the cathode shaft by a unique contact arrangement using high silver content contacts for exceptionally long life...no brushes to replace or silp rings to oxidize. The Rotex-exclusive contact system was pioneered over 25 years ago and continues in its improved form to be the most effective method designed to date. This superior contact arrangement allows Rotex Silver Recovery machines to operate at higher cathode speeds for superior silver plating performance.
SILVER VALUE
Silver plated onto the Rotex Ultra cathode may be easily dried and 'cracked' or removed from the cathode as 'photographic chip' or 'flake'. It may be easily smelted into pure silver as its purity is usually 95% or better. By contrast, 'coin' silver is 90% silver and 10% copper.
Silver traped in steel wool canisters is in the form of a 'sludge'. The sludge requires special fluxes to smelt and does not have as high of a value as clean, dry chip and flake. Nonetheless, use of a steel wool canister is recommended to satisfy codes.
Rotex Ultra A series silver recovery units have a 'state of the art' automatic plating current control to adjust the plating as a direct response to the concentration of silver in the fixer solution.
As the silver is depleted from the solution the plating current will gradually reduce to zero. When an increase of silver is detected, the plating current will rise. The controller automatically monitors the silver concentration on a 6 minute cycle.
ROTATING CATHODE
Rotex Ultra A silver recovery units feature a motordriven cathode to continuously renew the silver ion in the lquid contacting the cathode, also called the cathode 'junction'. Without agitation of the solution the junction would be quickly depleted of its silver ions and undesirable chemical reactions would occur. The rotating cathode allows for a compact machine and was pioneered, patented and became the basis of the name 'Rotex'.
DIRECT DRIVE
Rotex Ultra A silver recovery units use direct-drive gearmotors without belts, gears, drivers, bushings, or other components which require service or replacement. The gearmotor shaft is sealed so that fumes from the fixer will not enter the electrical enclosure.
POWER SUPPLY
The power supply features a center-tapped transformer that is wound for low impedance and cool, efficient operation. The plating current is rectified from AC (alternating current) to DC (direct current) by a full way center tap bridge rectifier that operates more efficiently (makes less heat) than other types of rectifiers. The full-wave center tap bridge rectifier is cooled by a fan that also draws fresh air into the power supply enclosure, thus ensuring a long life. An ammeter is featured to indicate the plating current in 'Amperes' and a circuit breaker is provided for convenient protection - no fuses to replace - ever!
CATHODE CONNECTION
Plating current is applied to the cathode shaft by a unique contact arrangement using high silver content contacts for exceptionally long life...no brushes to replace or silp rings to oxidize. The Rotex-exclusive contact system was pioneered over 25 years ago and continues in its improved form to be the most effective method designed to date. This superior contact arrangement allows Rotex Silver Recovery machines to operate at higher cathode speeds for superior silver plating performance.
SILVER VALUE
Silver plated onto the Rotex Ultra cathode may be easily dried and 'cracked' or removed from the cathode as 'photographic chip' or 'flake'. It may be easily smelted into pure silver as its purity is usually 95% or better. By contrast, 'coin' silver is 90% silver and 10% copper.
Silver traped in steel wool canisters is in the form of a 'sludge'. The sludge requires special fluxes to smelt and does not have as high of a value as clean, dry chip and flake. Nonetheless, use of a steel wool canister is recommended to satisfy codes.