Spraying with large surface shower
As an option, a large surface shower can be installed
It will enable you to spray the workpiece [2] com-
fortably and evenly with test liquid. A stop-cock is
installed in each shower head [1]. so you can adjust
each flow individually.
1. Large surface shower
2. Workpiece
3. Universal SW
Test liquid circulation
1. Test liquid tank
2. Pump
3. Stop-cock, mounted on the test liquid tank
4. Solenoid valve
5. Tap at workstation (optional)
6. Spray heads or hand-held hose
7. Test liquid collector tray
8. Runoff (return to test liquid tank via dirt filter)
WARNING:
if the system is switched
on but not used for more than one
hour, it is necessary to keep the
pump running in circulation mode*
to enable cooling of the test liquid.
Otherwise, the quality of the test liquid may be com-
promised, and oil-based test liquids may even ignite
at higher temperatures
*
e.g. via the opened valve for the test liquid hose to
enable a closed circuit through the test liquid collect-
ing tray)
WARNING - FIRE HAZARD -
Oil-based
test liquids are highly flammable. Use
only flame-retardant test liquids with a
flash point > 100 °C.
When using oil-based test liquids, have a fire exting-
uisher at hand and ensure you comply with the
instructions provided by the test liquid manufacturer.
NOTE:
the ability to detect faults in workpieces reduc-
es significantly with the decreasing quality of the test
liquid. The quality and efficacy a of test liquid depends
on the individual inspection task and the condition of
the workpieces. Check your test liquid at regular inter-
vals and replace if necessary.
2.9 TEST LIQUID SYSTEM
The test liquid unit comprises:
• the test liquid tank
• the connecting lines
• a hand-held hose or spray.
The test liquid flows in a closed circuit through the test
liquid collector tray and a dirt filter, back into the test
liquid tank.
1. Test liquid flow to the Universal SW
2. Feed opening with lid
3. Test liquid tank
4. Test liquid pump
5. Dirt filter
6. Test liquid return from the Universal SW
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