Maintenance
32
AVL 415SE Smoke Meter — Maintenance Guide
Fine Filter
We recommend replacing the fine filters during the annual preventive mainte-
nance:
Pre-filter
Material number: MF0478SP
2.3.10
Filter Paper Transport and Spool Device
The spool roll is driven by the supply roll by means of a slip clutch and a chain
drive; the driving torque of the spool roll is determined by the pre-tensioning of
the compression spring on the supply roll axis:
NOTICE
Remounting the parts, avoid any drilling forces on tubing and upper clamping
piece.
Fig. 23 Pre-filter
(Available in the eSpares
TM
Webshop)
CAUTION
Danger of burns and pinching!
In heated devices there is a danger of burns. The temperature of the compo-
nents inside a device can reach up to 70°C.
There is a danger of pinching your fingers in the clamp when inserting the filter
paper. Be particularly careful!
When working on the filter paper transport and spool, take care not to get your
fingers pinched in the chain drive!
Fig. 24 Inside the device, the paper transport mechanism
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