Fouling / Cleaning Of Heat Exchangers Water Side; Service - Bühler technologies BWT B05 Bedienungs- Und Installationsanleitung

Bedienungs- und Installationsanleitung
Installation- and Operation Instruction
Öl / Wasserkühler BWT / oil / water cooler BWT

6 Fouling / cleaning of heat exchangers water side

If cooling media are used which are possibly contaminated, such as surface water, cooling circuit water (
open circuit ), heating installation water ( specially in the case of old installations ) etc., filter having a mesh
width of max. 0.6 mm should be provided in the feed line. Furthermore, if such media are used, the unit
should be operated with the largest possible mass flow. If the mass flow are too small ( partial load ) the
turbulence in plate heat exchanger may decrease and susceptibility o fouling may increase.
If formation of deposits due to the water quality ( e.g. high degrees of hardness or heavy contamination ) is
expected, the unit should be cleaned at regular intervals. It is possible to clean the unit by rinsing. A weak
acid, e.g. 5% phosphoric acid, or the cleaning agents offered by relevant suppliers to clean copper and
stainless steel should be used to rinse the unit.
CAUTION
Acid and corrosive substances
Phosphoric acid can harm skin and eyes.
Wear protection gloves and face protection
If possible, the rinsing process should be carried out in the opposite direction to that of the operating flow
and, where necessary, back rinsing connection should be provided in the piping. The unit must then be
sufficiently rinsed using clear water to remove all residues of cleaning liquid before the system is put into
operating again.

7 Service

7.1 Service
If problems should occur in duty, you find hints in chapter 8.2.
On any further questions, call our service department, tel. no. +49 (0) 21 02 - 49 89 55 or your local dealer.
In case of a devices return please send the cooler in adequate packing to:
Bühler Technologies GmbH
- Service -
Harkortstraße 29
40880 Ratingen
Germany
14
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BX340001, 10/2010 Art. Nr. 34001