Donaldson Torit Dust Collector UMA 750V

Pressure drop across the filter assembly

Record the figure in the log book

Pressure drop increased significantly over two or three successive checks?

Check the filter if the pressure drop increased significantly

Pressure drop across the secondary or absolute filter

Change the filter when the pressure drop reaches 100 mm W.G.

Inspect the explosion relief assembly weekly

Ensure the bursting panels are intact and clear of obstruction

Prevent build-up of snow or ice on explosion panels during winter

Warning: This inspection requires trained personnel with PPE!

Any abnormal change in pressure differential across the filter assembly?

Enter the filter resistance in mm WG

Is the filter resistance within the expected range?

Is the secondary or absolute filter monitor providing a constant indication of the state of the filter?

Is the general casing integrity intact?

Are door fastener threads lubricated?

Is the ignition minimising fan's lining inside the casing intact?

Sign off on the dust collector inspection

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).

1) Flameproof maintenance – It is important that all flameproof enclosures, motors, and cable glands are inspected for corrosion and tightness on an annual basis.

In particularly aggressive environments, this inspection should be carried out more frequently.

2) Antistatic earthing (if fitted) – Check collector earthing continuity.

3) Explosion risks – Check measures taken to avoid ignition sources are still in place.

4) Fan maintenance – Inspect the fan thoroughly. This is achieved on UMA 40 collectors by removing acoustic diffuser, if necessary, and looking through cleaned air outlet; on UMA 40MM collectors by unbolting and removing fan power pack and inspecting; on all other collectors by unbolting and rotating fan assembly and looking through fan inlet eye.

If necessary, remove all residual dust accumulation. (Although the fan is located on the clean side of the collector, it is possible for low quantities of dust to migrate through the filter media).

The fan should be inspected immediately after any period of significant dust emission, i.e. due to damaged filter media or seal etc.

The fan should be inspected immediately if there is any unexpected noise, temperature or vibration.

The fan should be inspected every twelve months or immediately following any misuse.

Warning: Due to the weight of the mattress assembly, it should not be removed without using the support frame provided.

Isolate electrical controls and open front access doors.

Remove the mattress support frame from its storage position in the fan chamber or on the top plate of venting type collectors, and assemble into door frame.

Lower the mattress assembly using the extended nuts on the front of the door frame.

Slide the mattress assembly out of the collector onto the mattress support frame.

Remove wire mesh insert frames from individual filter bags. These should be checked for broken mesh and worn material edgings, especially around the area of any filter bag damage.

Detach filter bag assembly from supporting frame.

Fit new filter bag assembly into top frame, feeding individual filter bags between locating bars, and fold collar over peripheral sealing flange.

Prior to fitting wire mesh inserts, any material edgings that need replacing should be fitted around the three edges of the insert that do not have the insert frame joint. The inserts should then be fitted, edging first, into the filter bags.