Maintenance - Numatic HZ 190 Bedienerhandbuch

Installation / Removal / Disposal of the dust bag.
The dust bag holding the dust and debris must be removed and renewed by authorised personnel
only, wearing appropriate personnel protective equipment, in a specified de-contamination area.
Never operate without the full filtration system in place.
Process of disposal: Disconnect the hose, fit the Dust Cap on the Hose Flange, un-clip the bottom
two Toggle Clamps (Upper two toggle clamps have split pins that should not be removed by
un-authorised personnel).
Remove the cloth filter (A) in the Drum. Remove the dust bag from the Hose Flange inside the drum
and seal the Dust Bag hole. Place the Dust Bag inside an impervious plastic bag and seal the bag.
Dispose of the plastic bag, depending on contamination, in an appropriate manner.
Fit a new Dust Bag over the Hose Flange inside the drum assembly. Fit the cloth filter (B), and the
Head, plus Interceptor assembly, re-applying the two Toggle clamps.

MAINTENANCE

All machine parts should be regarded as contaminated when removed from the hazardous area and
appropriate action taken to prevent dust dispersal.
Disconnect from the power supply during cleaning, maintenance or when replacing parts. Ensure the
plug is removed from the socket outlet.
Maintenance must be carried out in a suitable non hazardous area with facilities for cleaning the area
after servicing, and with suitable ventilation.
Maintenance and cleaning work must always be carried out by competent authorised personnel
equipped with suitable personal protection.
The Cloth filter must be taken out and checked for degree of contamination, and damage to cloth or
seals.
If the Cloth seal is found to be damaged or badly contaminated, you must replace. If only mildly con-
taminated, either wipe clean or wash with a mild detergent (ensure it is dry before replacing).
Items that can not be satisfactorily cleaned (e.g. filters) need to be disposed of in an impervious
plastic bag and disposed of in accordance with current regulations. Replace the items that cannot be
satisfactorily cleaned using approved manufacturer parts.
Regularly examine the supply cord for damage, such as cracking or ageing. If damage is found,
replace the cord before further use.
All parts of this vacuum are safety critical only replace with the genuine Numatic spare parts.
For user servicing, the machine must be dismantled, cleaned and serviced, as far as is
reasonably practicable, without causing risk to maintenance staff and others.
Suitable precautions include decontamination before dismantling, provision for local filtered
exhaust ventilation where the machine is dismantled, cleaning of the maintenance area and
suitable personal protection.
In class H machines the outside of the machine should be decontaminated by vacuum cleaning
methods and wiped clean or treated with a sealant before being taken out of the hazardous area and
appropriate action taken to prevent dust dispersal. (HSE Risk Assessment needed).
A competent person shall perform a technical inspection at least annually, consisting of, for
example, inspection of filters for damage, air tightness of the machine and proper function of the
control mechanism.
Also the filtration efficiency should be tested at least annually, or more frequently as specified in
national requirements. The test methods that can be used to verify the machine's filter efficiency are
specified in EN 60335-2.69 Annex AA (22.AA.201.2). If the test fails it should be repeated with a new
essential filter.
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