Cleaning and Maintenance
User Manual H12 / SCAMAX® 8x1 - Version 2019.12
7.3.4.
Maintenance/Replacement of the Paper Guide Springs
In the frontal pressure unit, which is located between
the paper input and the scan areas, you will find two
rows of Paper Guide Springs. These springs serve two
purposes, they are necessary for the correct functioning
of the optical sensors and they also stabilize documents,
while these are passing through the printing region of
the
Imprinter Front
. Identical Paper Guide Springs will
also be found in the printing region of the
Imprinter
Back
. Because of the constant passing of scan documents or as the result of a major paper jam, it can
happen that individual springs become soiled or damaged. Dust and dirt may easily be removed by
cleaning the springs with a cloth and some SCAMAX® SV1A Cleaning Solution for Belts.Ho-
wever, if the spring’s surfaces have suffered (
through abrasion
) or if their shape has changed (
due to
bending
) they will need to be replaced. This is particularly true for the springs located opposite the
optical sensors.
The Paper Guide Springs are kept in place by means of
a locking device that engages in the hole on the front
side of the spring and lateral webs on the rear side of the
spring. The following procedure describes the replace-
ment of a paper guide spring in the area of the optical
sensors. The procedure in the imprinter area is the same.
To remove, the front part of the paper guide spring must
be carefully levered out of the lock, possibly with the aid
of a suitable tool. The paper guide spring can then be
removed by turning it slightly. During installation, insert
the rear part of the paper guide spring with a slight twist
into the opening provided. Then, press the front part
down into the opening until the locking device engages
in the hole. If handled carelessly, the paper guide spring
can easily fall into the opening. We therefore recom-
mend removing the front pressure unit before replacing
it, as described in the previous chapter.
Note
The paper guide springs in the front row serve as reference surfaces for the optical sensors. If one or
more of these springs are replaced, a calibration (see chapter
) of the sensors must be carried
out in order to avoid faulty signals during scan operation.
