1. Introduction and Overview
This manual provides essential instructions for the setup, operation, and maintenance of your Hermle Model 22864-070340 Modern Mantel Clock. This mechanical clock features an 8-day running time and a 4/4 Westminster chime movement, housed in an elaborate mahogany finish wood case with pyramid mahogany veneer, side glasses, a hinged back door, and an etched moon phase feature.

Image 1.1: The dial of the Hermle 22864-070340 Mantel Clock, featuring Roman numerals and decorative elements.
2. Setup
2.1 Unpacking
- Carefully remove the clock from its packaging. Retain all packaging materials for future transport or service.
- Inspect the clock for any visible damage.
- Locate the winding key, which may be securely placed within the packaging materials or inside the clock's back compartment.
2.2 Placement
- Place the clock on a stable, level surface to ensure proper operation of the mechanical movement and chime.
- Avoid locations with direct sunlight, extreme temperature fluctuations, high humidity, or strong vibrations, as these can affect the clock's accuracy and longevity.
2.3 Winding the Movement
Your Hermle clock features an 8-day mechanical movement. It requires manual winding approximately once every seven days to maintain optimal performance and chime accuracy. There are typically three winding arbors on the clock face:
- Insert the winding key into each arbor.
- Turn the key clockwise until you feel firm resistance. Do not overwind.
- The left arbor typically winds the chime, the center arbor winds the timekeeping mechanism, and the right arbor winds the strike.
2.4 Setting the Time
- To set the time, gently move the minute hand (the longer hand) clockwise.
- Pause at each quarter hour to allow the chime mechanism to complete its sequence before continuing. This prevents damage to the chime mechanism.
- Do not move the minute hand counter-clockwise.
2.5 Setting the Moon Phase
The moon phase dial is typically set manually. Consult a current calendar for the moon's phase. Gently rotate the moon phase dial until the image of the moon matches the current phase. This feature is decorative and does not affect timekeeping.
3. Operating Instructions
3.1 Daily Operation
Once properly set up and wound, your Hermle clock will operate continuously for approximately 8 days. You will hear the gentle ticking of the movement and the Westminster chime at the quarter hours, half hours, three-quarter hours, and on the hour, followed by the hour strike.
3.2 Winding Schedule
For consistent timekeeping and chime performance, it is recommended to wind the clock fully once every 7 days. While the clock has an 8-day running time, the chime and strike may become less robust towards the end of the 8-day cycle if not rewound earlier.
3.3 Chime Control
Your clock may feature a lever or switch, typically located on the dial or inside the back door, to control the chime. Common settings include:
- Chime On: The clock will chime as designed.
- Chime Off/Silent: The chime mechanism is disengaged, and the clock will only keep time.
- Night Shut-off (if applicable): Some models offer an automatic night shut-off feature, silencing the chime during specific nighttime hours. Refer to specific markings on your clock if present.
4. Maintenance
4.1 Cleaning
- Case: Dust the wood case regularly with a soft, dry cloth. For a deeper clean, use a high-quality wood furniture polish sparingly, applied to the cloth, not directly to the clock. Avoid abrasive cleaners.
- Dial and Glass: Use a soft, lint-free cloth to gently wipe the glass and dial. Do not use cleaning sprays directly on the clock, as liquids can seep into the movement.
4.2 Winding
Maintain a consistent winding schedule (e.g., every Sunday morning) to ensure the clock runs smoothly and accurately.
4.3 Professional Servicing
Mechanical clocks require periodic professional servicing, including cleaning and oiling of the movement, typically every 5-10 years. This helps to prevent wear and ensures the clock's longevity and accuracy. Contact a qualified clockmaker for this service.
5. Troubleshooting
- Clock Not Running:
- Ensure the clock is fully wound.
- Verify the clock is on a level surface. An unlevel clock can cause the pendulum to stop.
- Check if any packing materials or transit locks are still in place, obstructing the movement.
- Chime Not Working or Incorrect:
- Confirm the chime mechanism is fully wound.
- Check the chime control lever (if present) to ensure it is not set to 'Silent' or 'Off'.
- If the chime is out of sync with the time, allow the clock to chime the next hour, then manually adjust the hour hand (only the hour hand) to match the number of chimes.
- Time Inaccuracy:
- Ensure the clock is wound regularly and fully.
- Minor adjustments to the pendulum (if accessible) can regulate speed. Lengthening the pendulum rod slows the clock; shortening it speeds it up. Make very small adjustments.
- If significant inaccuracy persists, professional servicing may be required.
- Mechanical Issues (e.g., mainspring):
- Mechanical components, such as the mainspring, can occasionally require repair or replacement. This is a common issue for spring-driven clocks over time.
- For any internal mechanical issues, contact Hermle customer service or a certified clock repair specialist. Do not attempt to repair the internal mechanism yourself.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Hermle |
| Model Number | 22864-070340 |
| UPC | 706695806070 |
| Display Type | Analog |
| Style | Modern |
| Special Feature | Westminster Percussion Chime |
| Product Dimensions (W x H) | 8.27" x 11.81" (21 cm x 30 cm) |
| Item Weight | 6.7 pounds |
| Power Source | Mechanical |
| Operation Mode | Mechanical |
| Watch Movement | Mechanical |
| Material Type | Wood |
| Frame Material | Wood |
| Dial Color | Gold |
| Clock Form | Mantel |
| Indoor/Outdoor Usage | Indoor |
| Room Type | Living Room |
7. Warranty and Support
7.1 Warranty Information
Your Hermle 22864-070340 Mantel Clock is covered by a 3-year limited warranty from the date of purchase. This warranty covers manufacturing defects in materials and workmanship. It does not cover damage resulting from improper handling, accidents, unauthorized repairs, or normal wear and tear. Please retain your proof of purchase for warranty claims.
7.2 Customer Support
For technical assistance, warranty claims, or to locate an authorized service center, please contact Hermle customer service. Refer to the contact information provided with your purchase documentation or visit the official Hermle website.

