ThermoFisher Scientific Wellwash 4, Service Manual

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Chapter 7: Maintenance
Thermo Scientific Wellwash
®
4 Mk 2 User Manual Rev.2.3, Cat. no. 1507340 38
Thermo Fisher Scientific Oy is aware of a potential risk of leakage in the
pressure bottles when they have been subjected to long periods of UV
radiation. Although this occurrence is very rare, our customers are urged to
follow this piece of advice.
Bottles are available from Thermo Fisher Scientific Oy for the Wellwash 4 Mk 2
(Cat. no. WW934/1). Spare O rings for the bottle plugs are included in the spare
parts bag delivered with the instrument (see Fig. 5.1, item 6). See Chapter 10
Ordering Information.
Ensure that the waste bottle is emptied regularly and at least every time the
wash bottle is filled. Do not let the liquid level exceed the level mark on the
bottle.
The waste bottle is fitted with a liquid level sensor. The sensor prevents the use
of the instrument after the waste bottle is filled to the mark.
7.1.7 Liquid trap bottle
The liquid trap bottle prevents liquid from entering the pump and it should be
kept dry at all times . Liquid should enter the liquid trap bottle only if the liquid
level sensor is not properly connected (Fig. 7.1, item 1) and the waste bottle
overflows. If that happens, follow immediately the steps below:
1. Switch OFF the instrument and make sure there is no pressure in the wash
bottle by opening the wash bottle cap slightly.
2. Open the black screw on the cap of the liquid trap bottle cover (Fig. 7.1,
item 2).
1. Liquid level sensor
2. Liquid trap bottle cover screw
Fig. 7.1 Liquid level sensor and liquid trap bottle cover
1
2