Cleaning, Oiling and Adjusting (COA)

Every three to five years – depending on the age, condition, whether waterproof or non-waterproof, watch type (quartz or mechanical) – a watch must be disassembled, cleaned, oiled and adjusted for proper timing. Dry oil combined with pollutants creates an abrasive that can damage delicate watch gears.

Because replacing broken parts is costlier than regular maintenance, Philippe Medawar urges watch lovers to routinely have watches serviced for COA (Cleaning, Oiling and Adjusting).

During the COA process, Philippe Medawar determines if old or broken parts, like a mainspring, need replacing. Because various finishes, such as satin finish, have usually worn off over the years, it may be necessary to refinish the watch's case and band. At this juncture, the case and band are also buffed, polished and cleaned so your watch looks sparkling clean. The timepiece is carefully reassembled without any of the dust, dry oil and microscopic pollutants that could harm the fragile watch movement. When the case, crystal and back are reassembled, those requiring are waterproofed in a Bergeon water pressure tester.

To ensure proper timing, the watch is first checked on a computerized timer and then rechecked after a minimum of 48 hours. Philippe Medawar provides clients with a one year warranty, excluding rust and broken parts, for the COA service.

This is a very general description of the extremely detailed, precise, time consuming COA process. Those with additional inquiries are welcome to either phone or visit the Philippe Medawar atelier on 28th Street in Grand Rapids, Michigan.

Watch Batteries

Many people incorrectly assume watch battery replacement is elementary. If that were true, we wouldn’t need watchmakers to replace batteries. 

Weekly, Philippe Medawar is asked to rescue quartz timepieces with broken and missing parts, scratched/dented backs and scraped circuit boards resulting from unqualified hands attempting to open a watch case with a knife to replace a battery without the proper training and equipment. To protect your investment and the well-being of your watch, Philippe Medawar advises you never allow a non-watchmaker to attempt battery replacement.

Various watch brands, the construction of distinct models within a brand and whether or not they are waterproof or water-resistant are all criteria that determine a watchmaker’s approach to changing watch batteries. Philippe Medawar advises batteries be replaced every two years maximum, regardless of the brand of watch or if the watch is still running. This precautionary care is vital and could prevent the battery from leaking, causing corrosion to the movement, circuit board and other delicate parts (see photo).

The time needed to replace a watch battery is unique to each watch. Watch battery replacement service fees vary depending on the amount of time needed by the watchmaker and this can only be determined after the watchmaker inspects your watch. Clients may request an appointment or stop by Philippe Medawar on 28th Street in Grand Rapids for a free estimate.

Resealing Gaskets

Philippe Medawar cautions to not neglect the health of your watch. Every time a watch is serviced or a watch battery is replaced at Philippe Medawar, an exacting service is performed to ensure the timepiece is properly sealed. The watch back and crown each have gaskets that must be in good condition and properly sealed or moisture may enter the watch case causing rust, corrosion and damage to the delicate parts (see photo). If a non-watchmaker carelessly closes the case back, the case gasket will get smashed between the metal case and the metal back compromising the protective seal. If a crown gasket is worn or cracked, rust will spread throughout the movement causing expensive, time-consuming repairs.

By properly maintaining your watch, you can prevent unnecessary expenses and keep your precious watch in optimum condition.

Watch Bands

So that clients can more comfortably wear their favorite watch, Philippe Medawar offers watch band adjustment services. Those needing a watch band fitted to their wrist may make an appointment or stop by the 28th Street atelier and a watchmaker will assist you. Please note that the person wishing to wear the watch must be present to properly size the bracelet for a perfect fit. Those clients needing a new metal band or a new leather strap may choose from a wide selection of styles available at Philippe Medawar.

The aforementioned Watch Repair Services are a small fraction of available watch services at Philippe Medawar. Those with additional needs may call at your convenience and expert staff will happily answer your inquiries.