ThermoFisher Scientific Wellwash 4, Руководство по обслуживанию

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Chapter 5: Installation
Thermo Scientific Wellwash
®
4 Mk 2 User Manual Rev.2.3, Cat. no. 1507340 23
5.3.2 Wash head height
To accommodate the differences in size and volume capacity of manufacturers’
microplates, the height of the wash head is adjustable. This means that a
positive meniscus can always be obtained without an unnecessary waste of
wash reagent.
The wash head is factory-set at a nominal height to suit the most commonly
used microplates. Should adjustment be required follow these instructions:
1. Make sure the wash bottle is empty to facilitate the adjustment. Start a
simple wash routine and wait until the wash arm assembly starts to slide
backwards. Turn OFF the instrument from the power switch at the back of
the pump unit. The wash head is now in the
raised position.
2. A stainless steel head lift rod is located on the left-hand side of the washer
unit immediately above the keypad. There is a domed nut at the top of the
rod with a locknut underneath.
3. Perform the adjustment using the two spanners 5.5/6.0 supplied with the
instrument.
Fig. 5.14 Loosening the locknut with spanners
4. Loosen the locknut (Fig. 5.14) by keeping the 6.0-spanner stationary while
turning the 5.5-spanner clockwise.
5. Adjust the height by rotating the domed nut, clockwise to lower the wash
head and anticlockwise to raise the wash head.
6. Set the tips of the wash head to approx. 1.5 mm to 2.0 mm above the
height of a microplate on the plate carrier, when the wash head is in the
raised position.
7. Lock the domed nut into position with the locknut. When locking the domed
nut into position, keep it still with the spanner 6.0 and only rotate the
locknut anticlockwise using the spanner 5.5.