96
VERSION 10/2018 ORDER NUMBER DOC 2339321
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8.15 2A SWITCHBOX FOR SECOND APUMP OPTION
TwinControl
A1
A2
B_04508
If two dierent colors are to be used in turn, a second A-pump can be installed. A 2A
switchbox is used to switch between pumps A1 and A2. The switchbox switches the
following pump signals over and forwards them to the control unit:
– Product valve A (pneumatic)
– Changeover signal – pump A (pneumatic)
– Stroke measurement A / sensor A (electric)
Prerequisites
– Pumps A1 and A2 must be the same (model and size).
– Hose from product valve A1 or A2 to mixing block: same diameter and length.
– Same hardener and same mixing ratio for components A1 and A2.
– Soft circulation is not possible.
– External mixer on request.
Grounding
The switchbox must be grounded. The stroke measurement cables may be extended by
5 meters.
Explosion protection
Explosion protection is retained for systems with turbines, even with the 2A switchbox.
Switching over pump
1. [Stop].
2. [Flush] --> Hold gun in a grounded tank, carefully open and hold until clean ushing
agent comes out.
3. Turn switchbox switch up to stop.
4.
Filling and spraying according to Chapter 8.7.
Always turn switch up to stop. The center position will result in a fault message
(code 20: sensor A at bottom).