Lauda PD 2, Operating Instructions Manual, Page: 12 / 22

12 / 22 Puridest Mono Distillation Apparatus 09/2020
Cleaning 9.2
Depending on the degree of impurities in the feed water and the growing contamination of the water in the boiler, caused
by the distilling process itself, the boiling process will cause foam formation. To prevent these impurities from migrating
into the pure water area of the condenser, the water in the boiler must be exchanged at least twice a week. To do so, close
the on-site water inlet valve and lift the condenser from the boiler. Then empty the contents from the boiler and rinse
thoroughly with tap water.
Restart the unit as described in chapter 7.
The "Cleaning" procedure serves to exchange contaminated water in the boiler against clean water.
Re-Initiation after Low Water 9.3
In case of low water, the Distillation Apparatus temperature limiter will switch off the unit. In order
to restart, allow the unit to cool down and, as described in chapter 7, fill water into the boiler until
the heating element is below water level. The triggered low water cut-off must be released. To do
so, loosen the black cap nut at the right-hand bottom of the Distillation Apparatus. Inside the
thread, a small white plastic pin can be seen, that has to be gently pressed inside (e. g. with a pen)
until a clicking sound can be heard.
The LAUDA Puridest Distillation Apparatus is produced with first-class materials. Nevertheless, the unit should only be
subjected to mechanical strain in sensible limits. Make sure that no fluids come into contact with cable connections or the
electrical parts inside the unit!
The powder-coated surfaces of the unit can be cleaned with mild detergents, if necessary.
Servicings, repairs or modifications must be carried out according to the General Engineering by a competent electrician.
Only original spare parts must be used. Always demand a detailed confirmation by the person in charge (company, date,
signature) on the kind and volume of the tasks carried out.
10 Disposal of Old Units
LAUDA-GFL will take responsibility, within the scope of the legal directives, for an environmentally sound handling and
disposal of all used LAUDA-GFL units as of the production year 1995 that are returned to us free of charge and will have
it materially recycled. Before the unit is returned, a legally binding declaration must be provided from the sender, confirm-
ing that the unit is free from harmful and/or hazardous contaminations as well as from hazardous substances caused by the
previous use of the unit. LAUDA-GFL laboratory apparatus are exclusively designed for industrial use and may not be
disposed of through public waste disposal authorities.
EAR Registration Number WEEE-ID.NO.DE 67770231