64
Originalbetriebsanleitung
FLEXI
MIX
2
FMII_BAoDB_en_1401 • rs
Operation
6.5 Complete cleaning
A complete cleaning of the unit is required:
➤
during initial comissioning in order to flush out any test medium residues.
➤
when the unit is to be shut down for an extended period.
WARNING
Explosive gases may be generated by the evaporation of flushing agent,
which may ignite on hot heat sources.
➤
If the unit is equipped with material heaters, you must switch off all mate-
rial heaters and allow the unit to cool down before you start cleaning.
Quicker cooling can be achieved by circulating the material through the
unit (max. 20 minutes).
1.
Perform all work steps as described in chapter 6.3, in order to clean the
section between mixing unit and spray gun.
Perform the following work steps to clean the section between material inlet
and mixing unit.
Both components must be strictly kept separated, also during cleaning.
Use a separate solvent and collecting container for each component to avoid
material reactions and thus possible damage to the unit.
2.
Guide the return flow hoses into separate collecting vessels and secure
them against accidental slipping out.
3.
Connect the flushing agent feed:
➤
For metering pumps with material supply by suction pipes, place the
suction pipes into the drum with flushing agent belonging to the material.
➤
For metering pumps with material supply by feed drums, drain the mate-
rial off through the drain valves, then fill in the flushing agent belonging
to the material.
➤
For metering pumps with material supply by feed pumps, place the
suction pipes of the feed pumps into the flushing agent belonging to
the material and set the air pressure regulators on the feed pumps to a
pressure of approximately 2-3 bar.
4.
Open the return ball valves at the mixing unit.
5.
Open the compressed air shut-off valves at the air inlet of both metering
pumps.
6.
Press the
F 3
function key on the control module to switch the control system
to circulation mode.
7.
Regulate the air pressure regulator of the metering pumps so that the me-
tering pumps run slowly.
8.
Close the return ball valves as soon as clean flushing agent starts to run
out of the return flow hoses.
9.
Guide the return flow hoses into the flushing agent drums and secure them
against accidental slipping out.
10.
Open the return ball valves again and allow the flushing agent to circulate
through the unit for a few minutes.
Summary of Contents for FLEXIMIX 2 HERKULES Series
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