30
REDUCED SUCTION
Clogged filters
Check the status of the filters; in case
replace the filters with a new set.
Air leaks on the machine
Check that there are no drafts of
air or strange openings on the
carpentry. If possible try to seal
everything with silicone.
Unbalanced impeller
Check the condition of the impeller,
checking that it has no broken parts
or dirt on the blades. Remove the
fan assembly and clean the impeller
completely.
TABLE OF SCHEDULED MAINTENANCE
PERIODIC CHECKS
TYPE OF CHECK OR
MAINTENANCE
METHOD
FREQUENCY
1
GENERAL CHECK OF THE CONDITION OF THE AIR CLEANER
VISUAL
DAILY
2
CLEANING
MANUAL
See note A
3
CHECK OF THE CONDITION OF THE SEALS
VISUAL
150 HOURS
4
CHECK OF TIGHTNESS OF NUTS AND BOLTS
MANUAL
150 HOURS
5
CHECK OF FILTER CLOGGING
VISUAL OR MANUAL
600 HOURS See note B
6
CHECK OF EXTRACTOR FAN
MANUAL
See note C
7
REPLACEMENT OF BEARINGS
MANUAL
40000 HOURS See note D
NOTE A
The cleaning intervals vary according to the type of fluid conveyed and its concentration and also according
to the type of work environment in which it is used. The end user must therefore define a cleaning interval
suitable to always keep the machine perfectly clean; the accumulation of material on the fixed parts must
not be more than 5 mm thick.
NOTE B
A special device (optional) on the equipment signals the need to replace the filters. It is however recom-
mended to check whether the filters are clogged for maximum suction and machine efficiency; for this
reason the cleaning interval described in the filter paragraph should be respected and the entire filter set
should be replaced at least once a year. The filters deteriorate even if they are not used very often.
NOTE C
The fan extractor must be monitored at intervals established by the user to check that it is good working
order, to check for faults or damage to the impeller and to check that the electric motor is in good condition.
NOTE D
This is the lifecycle defined for the bearings, however due to external factors such as increased vibrations for
a certain period of time the replacement of the bearings may have to be carried out at shorter intervals. At
the end of their lifecycle, the bearings should be replaced even if apparently they seem in good condition.
OPERATOR’S NOTES
DETAILS OF MAINTENANCE OPERATIONS
The following table must be completed by a specialized technician authorized by HELVI S.p.A..
It is of fundamental importance to keep these notes up-to-date in order to have an affective record of the
problems encountered and the maintenance performed; in this way future malfunctions could be settled
in a short time and with the least economic expenditure.
