Table of Contents
Advertisement
SERVICE BULLETIN
DATE:
12/6/83
BULLETIN NUMBER: 133
MODEL:
W10Two, W13, W2l, W27, W30, W33, W40, W50, W52, W58, W70,
W80, W100, W120 (All Related Generators)
SUBJECT: Zinc Pencil - tl1885
A zinc pencil PN 11885 is located in the sea water cooling circuit of
all primary heat exchangers on the above models.
The purpose of the
zinc pencil is to sacrifice itself to electrolysis action taking place
in
the
salt
water
cooling
circuit.
This
zinc
pencil
should
be
per iodically checked by unscrewing it from its mounting boss on the
exchanger.
For the location of the zinc on your model, refer to the
cooling system section in your parts manual.
Replace the zinc pencil
as inspection dictates.
(Refer to Illustration A.)
Should material be flaking off the zinc, it should be scraped clean,
or be replaced by a good solid zinc pencil.
If it appears that a lot of material has been flaking off the zinc,
then it is advised that the end cap of the exchanger be removed, and
the flaked material be cleaned from the area of the exchanger.
A new
end cap gasket should be on hand in case it is needed when replacing
the end cap.
Refer to Service Bulletin t84 when removing end caps made of rubber.
ILLUSTRATION A
ZINC tl1885
REPLACE
CLEAN/REPLACE
(ACTUAL SIZE)
107
Hide quick links:
Advertisement
Table of Contents
