Buhler Cooler ELK400

Cleaning and disassembly of the cooler matrix

Due to the design of the cooling fins, the cooler has low susceptibility to dust and dirt

Normally, it is sufficient to clean the front surface with a brush

However, particularly if the air has a high dust and/or oil mist content, the cooling matrices may require regular cleaning

– First allow the cooling matrix to cool down

Disconnect the motor from the mains and secure it against accidental restarting

– Depressurize the system and disconnect the piping to the cooling matrix

Place an oil drip pan below the cooling matrix to collect leaking oil

– Close all connections with plugs to avoid more oil leaking from the matrix

WARNING: Danger due to rotating fan. Injuries to the hand may occur. Do not reach into the safety guard!

NOTICE: The device must not be started or operated outside the specifications!

NOTICE: Abrupt flow variation can lead to pressure peaks that may damage the cooler matrix. Make sure that the specifications are not exceeded in this case!

Check that all parts are free of damage, especially the cooling element and fan guard

Check if the two warning labels (rotating parts) on the cooler’s housing are fitted

Check the correct connections of oil and power circuits according to chapter „Installation and connection“

Make sure that all valves or other parts in the cooling circuit, which have to be opened, are opened

First, check that the motor is proper electrically connected and the fan rotates counter clockwise when looking from the motor’s side

CAUTION: Hot surface. Burning hazard. Let the device cool down before maintaining

Safety Instructions: The equipment must be maintained by a professional familiar with the safety requirements and risks. Only perform maintenance work described in these operating and installation instructions.

DANGER: Electrical voltage. Electrocution hazard. Disconnect the device from power supply and make sure that the equipment cannot be reconnected to mains unintentionally. The device must be opened by trained staff only. Regard correct mains voltage.

CAUTION: Hot surface. Burning hazard. Let the device cool down before maintaining.

CAUTION: High pressure. Risk of injury from ejected parts or oil, environmental hazard from oil. Maintenance and repair work must not be carried out on the oil circuit while it is pressurised. This also applies to the screw plugs. Avoid environmental pollution during cleaning work or work on the oil circuit. Use the designated collection container.

Check for damage to the aggregate

Check for abnormal (unusual) noise and vibration

Check cooler matrix cleanliness

Warning: Ensure the power is disconnected and the fan is secured against restarting before starting the procedure

Motor disconnected from power and secured against restarting

Four connecting screws to the box at the tips of the grate loosened

Fan carefully removed out the back

New fan inserted in the reverse order

Retaining screw of the fan installed in the motor shaft using glue to secure the screws