Donaldson Torit Dust Collector UMA 72V

Warning: For trained personnel only

Open secondary/absolute filter door

Lift bar to release sealing mechanism for UMA 40MM

Undo clamping nuts or clips as appropriate and remove retaining mesh or frame for UMA 100-450

Undo clamping nuts sufficient to allow element removal for UMA 750

Remove used element, place it directly into a plastic bag and then seal the bag

Slide the new element into the housing, with the element seal against the secondary/absolute filter seal frame, until it reaches the backstop

Clamp element in position using the arrangement provided

Close secondary/absolute filter door

Isolate electrical supply and remove fan chamber lid

Disconnect electrical wiring to terminal box

Remove the four bolts securing the motor drive bed-plate and withdraw the complete assembly from the unit case

Loosen, but do not remove, the four socket screws in the base flange and withdraw drive cover

Remove the six nuts securing flange of bearing housing to the bed-plate and withdraw the housing

Remove fan pulley and the six bolts securing the fan case

Remove fan impeller and fan case

Remove end caps and spacers from fan bearing housing

Pressure drop across the filter assembly

Record the figure in the log book

Pressure drop increased significantly over two or three successive checks

If pressure drop increased significantly, check the filter

Is the collector fitted with a secondary or absolute filter?

Pressure drop across the secondary or absolute filter

Pressure drop across the secondary or absolute filter reached 100 mm W.G.

If pressure drop reached 100 mm W.G., change the filter

Is the collector fitted with an explosion relief assembly?

Every 1000 working hours the following parts should be checked:

2) Rubber seals – for tears and over-compression.

3) Shaker mechanism with particular attention to:

- Broken locators on shaker bar.

- Torn shaker bar support strap(s).

Fan assembly removal/replacement (UMA 70-750)

Isolate electrical power supply.

2 On UMA 750 collectors only – Remove door frame centre member, remove mattress support frame from its storage position and remove fork lifting beam.

3 Disconnect electrical cables from terminal box.

4 Remove fan outlet grille cover plate.

6 The fan assembly can now be removed using a suitable lifting arrangement.

Renewing fan impeller and/or motor: