Service
With cleaning and maintenance on the machine, the power
cable should be disconnected from the supply. Fluids should
not come into contact with the motor. When cleaning with
fl uids the motor should be covered to anoid contact.
Th e fi ne fi lter should be changed at least once per year.
Use only original spare parts. Th e microfi lter/HEPA fi lter,
should be changed every 300 running hours. Use breathing
protection during a fi lter change. Th e operation should be
performed in a closed area. Used fi lters should be sealed in
a plastic sack and disposed of properly.
Check regularly that the electrical cable is not damaged.
Accessories
Description
Coupling socket
Coupling socket
Hose std Ø=50 per mtr
Plastic sack, standard
Microfi lter
Fine fi lter, polyester,
with integrated fi lter cover
Warranty
Th e warranty period for this machine is two years and co-
vers manufacturers faults. Th e warranty is valid under the
condition that the machine is used under normal conditions
on the task for which it was designed and is maintained
properly. Normal wear is not covered by this warranty.
Th e DC 3900c/a/Twin should be performance tested at
least once per year because it may be used with hazardous
materials. Worn parts must be replaced. Never compromise
the function of the DC 3900c/a/Twin, use only original
spare parts.
For vacuum motor the typical average life of the original
brushes is 600 - 700 hours. Th ey can then be exchanged
or complete motor/fan replaced. For 2nd brush set life is
ca. 400 hours and for 3rd brush set ca. 300 hours. After
that the commutator is worn out and the motor needs to
be replaced.
Part no
Description
Fine fi lter cellulose, with
2107
integrated fi lter cover
2129
2401
4110
42024
Other accessories — see Dustcontrol catalogue.
42025
Service performed by other than Dustcontrol or its aut-
horized agent voids automatically the warranty. No other
warranty express or implied is applicable.
DC 3900c/a/Twin - 13
Part no
42026
Part No 94171