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Translation of the original operating instructions
DUO
MIX
270
DM270_BAoDB_en_1507 • rs
Machine description
No. Designation and function
3
With the selector switch “Manual/Automatic” you decide whether both
operation limits should be monitored (= “Automatic”), or only the upper
one (= “Manual”). For start-up, set the selector switch to “Manual”.
For spray operation, set the selector switch to “Automatic”.
4
The contact pressure gauge monitors the pressure of the B-component
(hardener) and switches the machine off when the operation limits are
reached.
3.6 Temperature displays
The
DUO
MIX
270
is equipped with 2
thermometers which display the
material temperatures of the A and
the B component. The displays with
Fahrenheit and Celsius scales are
marked according to the component
affiliation by symbols and colors.
The measurement is carried out by
temperature sensors installed in the
high-pressure filters.
A
B
45,6 °C
44,8 °C
Fig. 9: Temperature displays
3.7 Proportioning pump
During spray operation or circulation operation, the proportioning pump delivers
the two components of the processing material separately to the mixing unit.
No. Designation
1
Muffler
2
Air motor
3
Intermediate body
4
Fluid pumps of the A component
5
Fluid pump of the B component
6
Fluid inlet of the A component
7
Fluid inlet of the B component
The air motor drives usually 3 fluid pumps
– two for A component and one for B compo-
nent. The mixing ratio results from the ratio of
pump sizes.
Maschines with mixing ratio 1:1 are equipped
with two equal-sized fluid pumps – the middle
pump (No. 5) is omitted.
Depending on the material requirements, the
mixing ratio can be adjusted by exchanging
the fluid pumps. All you need are the proper
tools and the appropriate fluid pumps.
Fig. 10: Proportioning pump
1
2
5
4
6
7
3
