Blancpain Fifty Fathoms Series User manual

11
Your watch

WARNING
The Fifty Fathoms/X Fathoms models are not professional diving instruments.
They must be backed up where necessary by a professional diving computer.
The water-resistance value is expressed in bar. 1 bar corresponds to a 10-metre
water column.
MOVEMENT MAINTENANCE
A mechanical watch needs good care and lubrication. Despite the excellent quality of
the oils and materials used by Blancpain, we recommend that you entrust your watch
to your Blancpain representative every five years to have it thoroughly cleaned and
lubricated.
Through this regular maintenance, you will prevent unnecessary wear due to drying of
the oils and thereby ensure your watch continues to run smoothly for years to come.
AFTER-SALES SERVICE
Regular maintenance of the movement driving your mechanical watch is one of the key
guarantees of its longevity.
The quality of after-sales service is thus essential. Each watch that returns to our
workshops therefore undergoes the same process of quality control and operational
verification as that of a new watch. Due to the complexity of Blancpain movements, we
advise that you deal exclusively with authorised Blancpain retailers.
Consult our website (www.blancpain.com) for a list of our retailers in each country.
SMOOTH OPERATION OF A MECHANICAL WATCH
Complicated adjustments and repairs must imperatively be performed by a watchmaker
representing the Blancpain brand or directly in our head office workshops.
POWER RESERVE
Most Blancpain self-winding watches have a power reserve of between 40 and 192
hours. This implies wearing a watch throughout the day in normal conditions of activity.
If the movement has come to a halt, it is advisable to wind it manually by at least
40 turns of the crown. This operation serves to supply the watch with the minimum
power reserve required before replacing it on the wrist. Models with a calendar, which
changes around midnight, must have at least 20 hours’ power reserve in order to drive
the entire mechanism. Otherwise, the watch is liable to stop at around midnight.
CALENDAR TRANSITIONS
In order to make the calendar move to the next date in passing midnight, a mechanical
movement has to store up the required energy and then release it at just the right time.
The energy requirement is such that the date, day and month in fact gradually slide
(rather than jump) from one figure to the next between 9 pm and midnight; and
the moon phases perform the transition between 9 am and 11 am. For all further
information on calendar transitions, kindly refer to the operating instructions for your
watch.
WATER RESISTANCE
Most Blancpain models are water-resistant, apart from the minute repeater. This water
resistance is necessary to protect the movement from dust and damp. While it is
possible to swim with a water-resistant watch, the water-resistance guarantee does
not exceed two years. Beyond this period, the water resistance may be compromised,
leading to costly repair. We therefore strongly recommend that you have your watch
checked once a year by an authorised Blancpain watchmaker or by Blancpain.
Watches equipped with screw-locking crowns, pushers and case-backs guarantee
perfect watertightness to 100 metres. For any further information regarding the
crowns and pushers, kindly refer to the operating instructions for your model.
WATER-RESISTANCE GUARANTEE FOR FIFTY FATHOMS/X FATHOMS:
These models have all successfully undergone water-resistance tests at 30 bar – meeting
the ISO 6425 norms. Blancpain recommends that you have the water resistance and
the smooth running of your Fifty Fathoms/X Fathoms regularly checked by your nearest
authorised Blancpain After-Sales Service Centre, or by Blancpain Switzerland.

5085F.A
B
AC
1
2
5085F.B
Kindly unscrew the crown (position A) before performing any corrections, and screw it
in again once the watch has been adjusted.
THE CROWN HAS THREE DISTINCT POSITIONS:
Position A, crown in manual-winding position.
Position B, fast date-setting position.
Position C, crown pulled out to time-setting position, enabling adjustment of the
hours and minutes. In this position the seconds hand can be locked by turning the
crown very slightly backwards, enabling the watch to be synchronised with an hour
signal.
USING THE CHRONOGRAPH:
Pusher 1: starts the central chronograph seconds hand, as well as the hands on the
hour and minute counters. A second press stops the chronograph function, while a
third press restarts it.
Pusher 2: resets the central chronographs seconds hand as well as the hands on the
hour and minute counters. This pusher serves to activate the flyback function when the
central chronograph seconds hand is in operation.
FLYBACK FUNCTION:
The flyback function serves to reset the chronograph (pusher 2), followed by an instant
restart, thus enabling the user to measure successive time intervals without needing to
stop, reset and restart the chronograph.
ONE-WAY ROTATING BEZEL:
Use: Before beginning the dive, turn the bezel to line up the lozenge-shaped marker
(
♦ ) with the minute hand. Thanks to this operation, dive times and any other time
measurements can be instantly read off on the bezel by referring to the trajectory of
the minute hand.
IMPORTANT
For the water-resistance guarantee, see pages 2-3. To change the wristband
using the watch holder, see page 42.
FLYBACK CHRONOGRAPH, DATE, SMALL SECONDS,
ONE-WAY ROTATING BEZEL, ANTIMAGNETIC CAGE,
SELF-WINDING
Calibre F185, up to 40-hour autonomy.
Watch model 5085F.B is adjusted in the same way.

3636
DuAL-PuRPOSE BLANCPAIN TOOL
1. Correction stylus
2. Allen key type screwdriver for triple-blade safety folding clasp.
The adjustable tip of your Blancpain tool is initially turned to the “Allen key” side to
adjust the triple-blade safety folding clasp (refer to page 40 for wristband adjustment).
This tool also serves as a correction stylus when adjusting the settings on your watch.
To do this, slide one finger into the notch and pull until the adjustable tip comes loose.
Turn the tip to the “stylus” side and place it back in position with the sphere-shaped
end facing the slot. Press it in with a slight rotating movement to secure it.

WRISTBAND LENGTH ADJuSTMENT
Loosen the screw using the Blancpain tool supplied with the watch (Fig. 5).
Slide the wristband section into the clasp and insert the welded hollow cylindrical stud
designed to house the screw into the required hole (Fig. 6). Place the screw back in
position and tighten it using the Blancpain tool (Fig. 7-8).
Fig. 5
Fig. 6 Fig. 7
Fig. 8
TRIPLE-BLADE SAFETy FOLDING CLASP
Only Blancpain wristbands specially designed for this folding clasp should be used. For
your safety and comfort, we advise you to have your new clasp fitted by an authorised
Blancpain retailer. You can always then adjust the length of the wristband yourself
using the dedicated Blancpain tool supplied with your watch.
OPENING
To open the clasp, press the side pushers while raising the cover (Fig.1). Pull upwards
to open the 2nd blade (Fig. 2).
CLOSING
Slip the watch on your wrist. Replace the upper (12 o’clock) wristband section in
position and press down with your thumb until it closes (Fig. 3). Proceed in the same
way with the lower (6 o’clock) wristband section (Fig. 4).
Fig. 1
Fig. 3
Fig. 2
Fig. 4