12.5 FIRST PERIOD OF USE

During the first period of yacht operation, in addition to the normal main- tenance and check operations indicated in this manual, we recommend carrying out the following additional operations and more accurate checks.
The duration of this period varies according to the frequency and use modes, but are in any case suitable to allow a correct run-in of all systems and components on board.

WARNING

We recommend consulting the technical documentation provided by the Manufactures of the various on-board systems and components; they can indicate operations, checks and specific times not included in this section of the Manual.

Following the first period of use, the hereunder listed additional operations and checks, should be performed at longer time intervals, although in any case, they play an important role for the safeguarding and reliability of the yacht and navigation safety.

• It is recommended that new or overhauled engines should not be oper- ated above 75% of their maximum load and at variable speeds. After this initial run-in, the engine should be brought up to full output gradually.
• After starting each engine, check for the correct circulation of the cooling water inside the circuit, by verifying that it comes out of the drains. Check also for the presence of leaks from the sea cock valves and strainers of the cooling circuits.
• Before the engines start, check the correct tension of the v-belts.
• Check the possible presence of unusual noises from the engines exhaust.
• Before and after navigation, check for possible leaks in the shaft lines.
• During navigation monitor constantly the temperatures and operation pressures of the devices on board (propulsion engines, generators, gear boxes).
• Check, by means of indicators installed on the main electrical panel, the correct charge condition of the batteries starting the engines and the utilities. Moreover, the engine alternators must correctly charge the batteries.
• Check rudder efficiency (by often checking the tiller angle) and the stabilizer.
• Before and after navigation, check the correct oil level in the hydraulic systems such as those of the rudders, hydraulic footbridge and bathing ladder.
• After the generator to start, wait several minutes before loading. Bring it slowly to maximum performance monitoring its correct operation.
• Check the correct load level of all extinguishers (fixed and portable) installed on board; the indicator needle on the pressure gauge should be set in the green range.
• Check the indicator of the main pressure gauge for possible pressure drops inside the system.
• Before and after navigation, check the correct operation of all bilge pumps on board.
• Check tightness and closure of portholes and hatches.
• Check the correct sliding and closure of the salon door, considering that it is not watertight.

DANGER

Before performing the listed checks and maintenance operations, we rec- ommend carefully reading the Safety Rules relevant to maintenance, con-tained in this Manual.

WARNING

Should more or less serious faults be noticed, contact the RIVA Service Department as soon as possible.

CAUTION

RIVA declines all responsibility regarding tampering carried out by third parties on equipment installed in the Shipyard. Such tampering or unathorized installations will not only immediately void the warranty, but may cause damage to the yacht and injuries to the people on board.
RIVA declines all responsibility concerning periodical maintenance activities scheduled by the Shipyard or by Manufacturers, but not carried out, on equipment/components, for which it is necessary to refer to their own Technical Manuals.

WARNING

Avoid prolonged use of engines at low speeds to avoid overheating of the exhaust pipes due to reduced cooling water circulation.