ThermoFisher Scientific Wellwash 4, Service Manual

Page: 44 / 156

Chapter 5: Installation
Thermo Scientific Wellwash
®
4 Mk 2 User Manual Rev.2.3, Cat. no. 1507340 20
2. Connect the pressure feed from the pump on the right to the wash bottle
using the black-coded tube.
3. Connect the vacuum feed tube (red) from the pump to the waste bottle
(Fig. 5.9, item 2).
4. Connect the liquid level sensor cord from the liquid trap bottle to the waste
bottle. Make sure the black connector is firmly in place (Fig. 5.9, item 1).
Caution: The liquid level sensor does not function if the connector is not properly
inserted: the black connector has to be pushed down all the way. The
waste bottle may otherwise overfill and cause the liquid trap bottle to
start filling. If at that point the liquid trap bottle is not emptied, the
overflowing waste liquid can enter the pump unit and damage it.
1. Liquid level sensor connector
2. Vacuum feed tube
3. Liquid trap bottle cover
Fig. 5.9 Liquid level sensor system
5. Check that the tubes are properly connected to the pinch valve under the
wash arm assembly on the washer unit (Fig. 4.1, item 14). The thin tube
going through the valve should not be pinched by the edges of the valve.
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3
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