NANO VDR 2600, Instruction Book, Page: 72 / 96

Reference Name
4 Maximum air inlet temperature of 70 ˚C (158 ˚F)
5 Switch off and depressurize the dryer before starting maintenance or repair
6 Compressed air and cooling water inlet (for water-cooled dryers)
7 Compressed dry air and cooling water outlet (for water-cooled dryers)
8 Automatic condensate drain
9 Component position
4.5 Cooling water requirements
General
Cooling water needs to fulfill requirements in order to avoid problems of scaling, fouling, corrosion
or bacterial growth. No general recommendation can encompass the effects of all combinations of
the various compounds, solids and gases typically found in cooling water in interaction with different
materials. Therefore the recommendations formulated in our cooling water specifications are a
general guide line for acceptable coolant quality. However, where strict limits apply, a statement is
made in the specification.
The water requirements refer to untreated water. When water is treated, some parameters will
change. Water treatments should be carried out by a specialized water treatment company, taking
the responsibility for the performance of the treated cooling water and the compatibility with the
materials in the cooling circuit. This includes not only the selection of the appropriate additives, but
also the correct application, monitoring of concentrations and properties, prevention of sludge
formation and maintenance of the system. This applies also to treatment with anti-freeze products.
They should be provided with suitable stabilizers and inhibitors.
Specifications also depend on the criteria mentioned below:
• the type of cooling circuit:
• open
• Single Pass
• recirculation with cooling tower
Instruction book
70 2987 2020 00