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Product Description: Truck Wash for Dampier WA

Our Client, required an electrical control solution for their “Truck Wash” project. The truck wash was designed for cleaning equipment before it was transferred from Dampier WA to Barrow Island.

The controls for this project were built in a Stainless Steel Cabinet to service motors and valving associated with 4 pressure washers. All equipment was housed in an air-conditioned shipping container with a control room built at one end.

The Process control for this project was controlled by an OMRON P.L.C with a 10” Colour touch screen to display faults, control status and manual and automatic operation of equipment. The P.L.C was also programmed to control dosing system, backwash system to clean filters and a selection of recycled or mains water, status of all pumps and valving, alarm for blockages, controls for media filter, high waste oil levels, high pressure flow switches and associated equipment, control of 1st flush system or open sump.

Level Control of storage tanks was carried out by submersible level transmitters, signalling back to the P.L.C for level control of tanks and measurement of recycled water available or mains (if recycled was not available). Having all of the controls built in a shipping container allowed for direct shipping of equipment. Storage tanks and high pressure washes were installed on site back to the pre-wired junction box for stress-free installation.

Recognising that not all components were in operation simultaneously, we were also able to save energy and power costs by putting areas of the system into stand-by mode when unused for a particular period of time.

Today the truck wash is in use daily and serving its purpose successfully in Dampier WA.

Product Description: Process Controls for the Food industry

We are often working on projects that involve process controls for the food industry. Some examples of these include industrial blenders, instantisers, mixing vessels, cooling tunnels and general food process controls.

In this instance, our client was requiring us to manufacture controls that will allow a food product to undergo the following processes:

• Pasteurisation

• Cooling

• Drying

• Guidance to a packing area

This process begins at an in feed conveyor with a pneumatic pusher to divert product into the tunnel where the product is held for an amount of time under hot water sprays controlled via a modulating valve through a heat exchanger and circulated by a hot water pump.

After the pasteurising section, the product passes through a cooling section of the tunnel where chilled water is pumped through spray nozzles to cool the product.

In the final section, the product goes through a dryer and is then diverted onto an out feed conveyor to the packing area.

Our controls are required to consider a number of elements such as timing, temperature, direction and activation to name a few. For this project the process is controlled by an Omron PLC. All the conveyers are controlled by WEG Variable Speed Drive’s. The temperature is controlled via an Omron temperature controller through a PID loop to a steam valve to heat the water.