33
Maintenance
AVL 415SE Smoke Meter — Maintenance Guide
1. Check this function particularly when the supply roll is almost empty and the
spool roll full and, if necessary, adjust the pretension of the compression
spring accordingly (torque at spool roll 20 to 22 Ncm).
For adjustment, see AT1240 415S Smoke Meter Operating Manual and
AT3648 415S Smoke Meter Product Guide. After adjustment fix it with the
counter nut and seal it (see also Fig. 25 on page 33).
2. Do not pretension the compression spring more than necessary so that the
traction force on the filter paper is kept to a minimum.
3. Make sure the roller holder of the used paper spool does not rub against
either the supply roller or the paper strip to be spooled onto it.
The length of a filter paper feed should be between 47 and 53 mm.
(tolerances: minimum 43 mm, maximum 57 mm).
4. Do not lubricate chain and chain wheels (in particular the friction surface of
the clutch must be "dry", see Fig. 25).
2.3.11
Cooling
The cooling air flows in and out on the underside of the device through filter
mats.
1. Clean the mats with compressed air.
2. Replace heavily soiled mats.
1.....Filter mat
2.....Paper transport adjustment
Fig. 25 View of the filter mat and the paper transport adjustment
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