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882.00207.00 Chapter 3: Installation 34 of 102
3-3 Electrical Connections
The standard Slide Gate/Auger blending system is designed to operate on 120/1/60 supply voltage
(220/1/50 CE models are also available). The current requirements vary with the blender’s size and
throughput rating. For exact current requirements, check the blender serial number tag, located on
the rear plate of the mixer section.
If a step down transformer was provided, it should never be used to power anything other than the
blender. Loading equipment, etc. must be powered by another power source. As well as possibly
overloading the transformer, the additional equipment may induce power line noise that may affect
the operation of the blending system.
The transformer will be mounted and wired by the customer or your installer. If company or local
codes require fusing or disconnects, these items must be supplied, wired, and mounted by the
customer.
Caution! Each blending system MUST be connected to a separate source of power. Do not
connect other electrical equipment, especially self-contained hopper loaders, on
the same line as the blending system.
Ensure that the power entrance location on the blender panel remains unchanged. Make sure that the
proper size wire and proper wire routing techniques are used when installing the supply wiring to the
control panel. Care must be taken to ensure that the supply wiring does not interfere with the low
voltage DC wiring.
The blender is equipped with a plug that functions as the disconnect device (See Figure 11 on Page
27 for an example). The mating receptacle must be installed no higher than 5’ feet (1.6 m) above
the floor. Make sure your installation conforms to your regional electrical standards.
3-4 Pneumatic Connections
The Slide Gate/Auger blending system uses plant-supplied compressed air to operate the metering
and dump valves on the blender.
CLEAN AND DRY air must be supplied to the blender. The air supply should be filtered through a
5 micron air filter with a water separator. Oil should not be used unless air dryers are installed on the
compressed air supply. In this situation, an oiler may be required on the blender to keep the air
cylinder seals lubricated.
Figure 23: Customer-Supplied Pneumatic Components
Note: This blender uses air for blender metering functions, so it is very important to
supply clean, dry air to the blender. Dirty or oily air can affect blender
accuracy, result in poor performance, and cause injury. Provide a 5-micron air
filter on the air supply to the blender, and be sure excess oil is removed. Also,
use a dedicated line to ensure proper air supply.