Instructions for Hermle Mantel Clock with Pendulum Key Wound Movement W0131 with Hour and Half Hour Strike

1) Unpack the clock

Take the clock, pendulum and key carefully out of the carton.

2) Transportation securing device

Carefully remove the protective packaging such as foam rubber, corrugated paper, rubber bands, etc. You will find these mainly where the hammers, the pendulum leader, gongs or bells are located, inside the back of the clock.

3) Wind up the clock

Please wind your clock fully every 7 days for optimum performance (the clock will actually run about 8 - 9 days on one winding). To wind the clock use the enclosed key. Turn key clockwise until it stops. The left winder is for the striking and the right winder is for the time.

4) Attaching the pendulum

Hang the pendulum onto the pendulum leader (see illustration 1).

5) Starting the pendulum

Move the pendulum slightly to the left or right and release it gently. You should hear an even "tic - toc" sound. If the tic-toc is uneven or the clock stops, follow the "putting in beat" procedure in step 6.

6) Putting the clock in beat

Putting the clock in beat is the responsibility of the clock owner. While the clock was in beat when it left the factory, it may get out of beat due to handling or not being on a level surface. It is a simple process, once you have tried it a few times.

Putting the clock in beat is an adjustment to make the tic and toc evenly spaced. There is a slip clutch mechanism in the clock's escapement (the part that makes the ticking sound and operates the pendulum). The slip clutch is operated by pushing the pendulum leader (see illustration 1) slightly past the point where you feel a resistance.

To put the clock in beat: Listen to the tic toc. Gently push the pendulum leader slightly past the point of resistance. Listen to the tic toc again. If it is more uneven, push the leader in the opposite direction and listen to the tic tock again. After several tries, you will be able to get the tic and toc sound to be evenly spaced, and the clock is then "in beat".

7) Strike

If striking is not required, do not wind up the left winding square.

8) Time and strike setting

Move the minute hand (long hand) clockwise or counterclockwise to set the clock to the correct time. The clock will strike the number of each hour, and will strike once on the half-hour.

If the clock is striking the wrong hour, move the hour hand (short hand) to point to the hour that the clock just struck.

9) Regulating the clock

To make the clock run slower - turn the regulating nut below the pendulum to the left (see illustration 2).

To make the clock run faster - turn the regulating nut to the right.

One turn of the regulating nut changes the clock's rate by approximately 1 minute per day. An accuracy of 2 - 5 minutes per week is typical.

attaching the pendulum to the pendulum leader

Illustration 1 - attaching the pendulum to the pendulum leader

Regulating the timekeeping by using the regulating nut at the bottom of the pendulum

Illustration 2 - Regulating the timekeeping by using the regulating nut at the bottom of the pendulum