Raw Water System; Zinc Sacrificial Anode Check; Siphon Breaker - Nanni Z4.205 Operator's Manual

S08 MAINTENANCE

RAW WATER SYSTEM

DANGER !
When the boat is on the water, water can flow into the
boat via components located below the waterline. Close
the raw water cock (if fitted) or prevent water discharge
before working on the raw water system.
NOTE !
If there's any risk of frost, raw water system should be
drained.

ZINC SACRIFICIAL ANODE CHECK

Zinc anode is located on the exhaust elbow as shown on
picture below :
Zinc anodes

SIPHON BREAKER

DANGER !
Close the sea cock before any operation on the siphon
breaker.
NOTE !
Siphon-breaker itself is not part of maintenance
sheddule, but check regularly that the ducts are in good
condition during the walk around. Please keep in mind
that a siphon-breaker is compulsory if top of exhaust
elbow is below the waterline.
CAUTION !
A faulty operation of the siphon breaker will lead to
water entry in the engine.
Inspect it regularly and clean it following the instructions
given by the manufacturer.
On above picture: siphon breaker in blue.
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