5
3.2 GENERAL
Place the chair on a level surface. Check that all
castors are in contact with the ground. If this is not
the case, the chair has one or more incorrectly
installed or defective castors, or a defective frame,
which must be replaced.
All welded components must be visually inspected
for cracks or fractures.
Parts with visible wear should be replaced.
3.2.1 CASTORS
It is recommended to check the castors regularly
and to wipe off any residual threads, etc.
Certain floor types and floor cleaning agents have
a greater tendency to accumulate on the castors
and build up a layer of dirt. Dirt on the castors can
transfer back onto the floors. Therefore, ensure to
clean the castors or replace the castors.
All castors should also be tested for wear and tear
in castor bearings and swivel bearings. If there is
noticeable wear and tear in any castor, it must be
replaced. It is recommended to replace all castors
at the same time to ensure the chair rolls optimally.
3.2.2 LUBRICATION OF INNER AND OUTER
TUBES
It is recommended to regularly lubricate inner and
outer tubes on chairs with gas spring to ensure that
the chair can be easily raised and lowered. Follow
these steps:
• Raise the chair to its top position.
• Clean inner tube/gas spring with a degreaser.
• Apply lubricant (e.g. HHS2000) in an even layer
to all surfaces of the inner tube/gas spring.
• When the chair is subsequently raised and
lowered, the lubricant will be distributed to the
outer tube.
Chairs with electric lift are lubricated on the
inside by the factory and should not be wiped or
lubricated during the life of the chair.
3.2.3 WIRES
Check all wires and plugs for damage and loose
connections and replace damaged or defective
components. Please refer to the spare parts
drawing (available at
www.vela.eu
) for a wiring
chart of your model.
3.2.4 SEAT MECHANISM
The seat mechanism is located under the seat and
controls the seat-tilt feature. The release levers are
also mounted on this plate.
Inspect the seat mechanism for excessive wear and
tear as well as any noise during use. Noise in itself
is not dangerous but may indicate that something
else needs attention.
Moving parts should be lubricated, except for
clutch plates (see
section 3.5.4
). Clutch plates
should be cleaned of grease and dust and gently
lubricated at one end to prevent noise during use.
It is important to only lubricate one end, otherwise,
the clutch plate may lose function. After applying,
check that the lubricant does not run down to the
opposite end.
Loose screws must be identified and tightened.
Note: Do not tighten nuts described in
section
3.5.4
unless experiencing seat or backrest angle
sliding, even when the release lever is not activated.
3.2.5 SEAT AND BACKREST
Check seat and backrest for worn upholstery. If
there is a hole in the upholstery, it is recommended
to replace the entire seat or backrest.
Make sure the seat is firmly secured by tilting it,
rocking from side to side, and back and forth. If
the seat seems loose, it is important to check and
tighten the screws that secure the seat.
3.2.6 ARMREST
Check the condition of the armrest padding and
replace it if there are cracks.
Check that all welds are intact and that hand
screws are sufficiently tight so that the armrest is
secure and stable.
3.2.7 ACCESSORIES
Check that the accessories are in proper condition
and securely mounted on the chair.
3.3 TROUBLESHOOTING CHAIRS WITH
ELECTRIC LIFT
The wiring for VELA/VELA Medical chairs with
electric lift can be found on the spare parts
drawing, which is available on our website:
www.
vela.eu
3.3.1 RECHARGING THE CHAIR BATTERY
• Daily charging is recommended to extend the
battery life and ensure sufficient power for
everyday use.
• If the light on the charger is not on when
plugged in, the charger must be replaced.
Please note:
The chair must not be used during
charging.
