Page 10 of 38
102808_CAPAC_MANUAL_MODEL_90W12D_SYSTEM.doc
If the system is installed on wood or fiberglass hulls, all of the submerged
metal appendages must be bonded to the common ground in order to obtain
protection.
When a variety of metals are used on the underwater hull, the CAPAC
system will be set in the factory to protect whichever metal has the highest
protected reading and no adjustment should be necessary.
For example: when a wood hull has a monel shaft, bronze propeller and
steel rudder, the CAPAC
®
system will be set in the factory to protect steel
regardless of the fact that the bronze and monel will be over-protected.
Table 2.2 below provides a listing of “freely corroding” and “protected”
meter readings for various metals and also indicates which model of controller is
to be used to combat corrosion on the metal indicated.
TABLE 2.2
CAPAC Monitor Meter Reading
METAL Freely
Corroding
Protected Controller Model to be used
Carbon Steel 1020
Stainless Steel 304
(active)
0.61
0.53
0.85
0.77
37810-1
Yellow Brass 268
Aluminum Bronze
Commercial Bronze
Monel 400
0.36
0.32
0.31
0.075
0.69
0.65
0.64
0.405
37810-3
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