BUCHI Ultrasonic Package - Manual (Page 33)

BÜCHI Labortechnik AG Maintenance | 7
Ultrasonic Controller 33/46
7 Maintenance
All maintenance and repair work described in this manual can be carried out by
the operator. All other tasks must be carried out by trained service personnel.
Therefore contact the BUCHI customer service or the sales representative.
Use only genuine BUCHI consumables and spare parts for maintenance to as­
sure good device performance, reliability and safety. Any modifications of spare
parts or assemblies are only allowed with the prior written permission of BUCHI.
7.1 Cleaning the nozzle
NOTICE
Risk of damaging the nozzle.
Malfunction of the nozzle resulting in inaccurate particle diameters.
1. Do not attempt to drill out material hardened in the liquid feed passage of
the nozzle.
2. Do not immerse the nozzle in an ultrasonic cleaning bath or any other
cleaning bath.
1. If possible, flush the nozzle with an appropriate solvent after each use (for
example water or isopropyl alcohol).
2. Prior to cleaning, turn the system OFF and disconnect the interconnecting
cable and the liquid feed tube from the nozzle.
3. If significant build up of material occurs, use the following method to clean
the nozzle atomizing surface and the liquid feed passage:
• The liquid feed passage may be cleaned by inserting a pipe cleaner or
small round brush into the nozzle orifice or liquid feed tube at the end of
the nozzle. For best results, make several passes through the nozzle.
• The nozzle tip (atomizing surface), may be cleaned using a mild scouring
abrasive (such as steel wool or “Softscrub” tub and tile cleaner).
7.2 Peristaltic pump, adjustment
NOTICE
Risk of liquids leaking into the housing or electrical components.
Device damage by liquids and detergents and corrosion.
1. Do not spill liquids over the device.
2. Wipe off any liquids instantly.
3. Place the distilled water onto the designated reservoir­plate on top of the
B­290.
Preliminary tasks
1. Remove the ultrasonic nozzle from the Mini Sprayer B­290 and place it
into a suitable container.
Tasks
1. Insert the tube (1) in to the pump bed.
2. Put the tube (2) on the suction side into distilled water.
3. Close the pump bed with the handle (3).