Electrical Details for the Most Common Wetblast Machines from Dana-Ridge

3-phase vs Single-Phase

Advantages of single-phase power in a wetblast machine

• Easily accessible supply in most workshops.
• Easy just to plug a unit into a 240V, 15-Amp socket. No specialized knowledge required.

Advantages of 3-phase (415V) power

• More efficient motor
• A “stiffer” motor compared to the 240V capacitor start/run motor
• No need to replace capacitors as they fatigue over time ( 3-5 years depending on starts/day).
• Cheaper to replace than 240V motor

The Mercury Machine

The Mercury model wet blast machine, from the Dana-Ridge range, is a single phase 240V machine and comes supplied with 3m of power cable and a three-pin 15A plug. Current draw of the 240V motor is ~6.25 Amps.

The machine is tested and tagged before leaving the workshop, for your safety. The pump motor is a 1.5 kW unit running at 2-pole speed (3,000 rpm). The motor uses a capacitor start/capacitor run setup to “stiffen” the 240V motor for the torque demand to start and run the slurry pump.

The Comet Machine

The Comet model machine comes in either 240V or 415V (three-phase) options with a 1.5 kW 2-pole single speed (3,000 rpm) motor depending on the customer’s preferred voltage choice.

The single-phase version comes ready supplied with a tested and tagged 3m power cable and 15A three-pin plug. The 3-phase (415V) unit with a 1.5 kW 2 -pole speed motor draws ~3.6 Amps.

Wiring of the 415V machine is usually arranged by the customer on site, due to the variety of 3-phase configurations available Only a certified, licensed electrician should carry out the wiring in of the three-phase machine.

All new 3-phase machines have a neutral.

The Mars Machine

The Mars model machine has a larger motor and pump-set, which provides a greater flow of slurry to the process gun (or guns if it is a modified machine). This machine is only available in 3-phase (415V).

It has a 4 kW, 2-pole, single speed (3,000 rpm) motor which draws ~9.6 Amps. Wiring of the 415V machine is usually arranged by the customer on site, due to the variety of 3-phase configurations available Only a certified, licensed electrician should carry out the wiring in of the three-phase machine.

All new 3-phase machines have a neutral.

Larger Machines

Larger machines running multiple guns can have between 5.5 – 11 kW motor, 2-pole speed (3,000 rpm) which draw anywhere from 13.25 Amps to 26.5Amps depending upon the motor size installed on the 50mm pump assembly.

Some larger machines may have 2 speeds to allow for higher torque on start-up, but switch to the normal 2-pole speed once the machine has started and fluidized the abrasive slurry. Some larger machine may have soft starts and be controlled by a PLC (programmable Logic Controller). Always consult the machine manual for more details on the machine configuration as there are a great variety of Dana-Ridge machines and electrical set-ups in the marketplace.

All new 3-phase machines have a neutral.

Phase Change Converter

If you wish to run one of our three-phase machine off a single-phase supply then talk to our friends at Phase Change Converters. Our machines are able to be run on their system.

Visit their site at www.phasechanger.com

Email: info@phasechanger.com