WinGD WARTSILA RT-flex58T-D, Maintenance Manual

Page: 368 / 498

Maintenance
6606 − 1/A1
RT-flex58T-D
Winterthur Gas & Diesel Ltd.
2/ 3
2. Cleaning methods
The cooling tubes can be cleaned by mechanical, by hydraulic or by chemical
means.
2.1 Mechanical cleaning in fitted condition
⇒
First unscrew and remove the cover 1 (Fig. ’A’).
⇒
Remove return chamber 2 and connection chamber 3 of the scavenge air re-
ceiver.
⇒ Remove the dirt accumulated in the tubes by means of special tube brushes
and then flush away with water.
2.2 Hydraulic cleaning in fitted condition
Firmly adhering sediment which is not dislocated by the brush can be removed
with high pressure water jets. Spray devices with special nozzles are used, which
can be ordered from the cooler manufacturers.
2.3 Cleaning by chemical solvents in removed condition (removal see 6606 − 2 )
Should the above-mentioned methods not be successful then chemical means
must be utilized. By this the tube stack is immersed in a chemical cleansing bath,
then flushed through with a strong water jet. During the cleansing process the ef-
fectiveness can be increased by circulating the chemical through the tubes,
whereby the immersion time can be reduced.
For this type of cleaning the instructions of the cleaning agent makers must be
strictly followed.
When choosing the cleaning agent we recommend using only products of re-
nowned firms of this line such as: DREW, VECOM, GAMLEN, HENKEL, etc.
EXPANSION
SIDE
FIXED
SIDE
II
3
6
3
2
6 2
8
5
5
7
8
8
1
002.673/98
002.673/98 002.673/98
2013
Scavenge Air Cooler: Cleaning (Water Side) on Engine at Standstill