Maintenance - Numatic MVD 570 Owner's Instructions Manual

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.
Decontaminate before dismantling - 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 contaminated, 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 M 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. (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 IEC 60335-2-69 Annex AA
(AA22.201.2). If the test fails it should be repeated with a new essential filter.
Replacing HEPA filters process:
Unclip the top two toggle clamps, removing the security split pins in advance.
Remove the Head assembly and place in a safe area. Unclip the lower two toggle clamps and remove the Interceptor
assembly from the drum assembly, and place the Interceptor on a good level working surface.
Unscrew the 6, M5 x 10 screws on the underside of the Interceptor assembly which will expose the HEPA filter.
Remove the contaminated HEPA filter and place in a suitably impervious plastic bag and dispose of in accordance
with current regulations.
Replace the HEPA filter with an identical approved part
(ensure plastic filter grid that locates into the hole in the metalwork is not thrown away with HEPA filter).
Re-assemble the Interceptor assembly in reverse order.
If the seal between the upper and lower metal parts of the Interceptor assembly is damaged, replace with a
manufacturer approved seal material (there must be NO gap in the circular seal).
Re-assemble the machine in reverse order. (Screw torque 2.5Nm). Ensure new split pins are fitted and legs opened
During this process please look carefully at all seals between mating parts and check for any damage.
If seals have been damaged, please contact the machine manufacturer to obtain an approved replacement part.
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