Electro-Numerics RACECLOCK MM-01 Replacement Manual

Battery replacement procedure

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Milemarker Raceclock model MM01, utilizes two internal sealed lead-acid batteries for clock operation. With

fresh, fully charged batteries installed, the clock will operate for approximately 10 hours. These batteries, EN part

number 860-008, are 6V and are connected internally in series to provide 12V operating voltage. Battery kit,

MM01-BK provides the correct replacement batteries and the necessary replacement parts which are removed

during battery replacement.

To replace the batteries, it is necessary to partially disassemble the clock.

Using a Philips screwdriver, remove the 12 screws around the base of the clock.

Insert the screwdriver into the lower vent-slots on the ends of the clock and gently pry upward, pushing the

base downward to separate the top enclosure from the base. Alternately pry each end until the top enclosure

is completely free from the base.

MILEMARKER, MM-01

BATTERY REPLACEMENT PROCEDURE

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Summary of Contents for Electro-Numerics RACECLOCK MM-01

Page 1 MILEMARKER, MM-01 BATTERY REPLACEMENT PROCEDURE Milemarker Raceclock model MM01, utilizes two internal sealed lead-acid batteries for clock operation. With fresh, fully charged batteries installed, the clock will operate for approximately 10 hours. These batteries, EN part number 860-008, are 6V and are connected internally in series to provide 12V operating voltage. Battery kit, MM01-BK provides the correct replacement batteries and the necessary replacement parts which are removed during battery replacement.
Page 2 With the enclosure top free from the base, carefully lift the enclosure top and lay it on the table behind the clock being careful not to disturb the wires connected between the enclosure top and the base. Remove the (+) positive (red wire) and (-) negative (black wire) from the batteries. There is a small amount of silicone adhesive on the terminals to keep them in place.
Page 3 Cut the top strap, the large bottom tie-wrap and the small ribbon cable tie-wrap. When removing the top strap, note how the strap is fed through the buckle for re-installation of the new strap. Top strap Ribbon cable tie-wrap Large bottom tie-wrap Cut the ribbon cable tie-wrap Cut the large bottom tie-wrap Cut the top strap...
Page 4 Remove the black jumper wire from the left-hand battery positive (+) battery terminal and the right-hand battery negative (-) terminal. There is a small amount of silicone adhesive on the terminals to keep them in place. Remove the two batteries. There is a small amount of silicone adhesive underneath the batteries to keep them in place.
Page 5 Tighten the bottom tie wrap Trim the bottom tie wrap Install the new top strap and buckle. Reference how the old strap was fed through the old buckle when installing the new buckle. Trim the ends. Install the top strap starting on the right Feed the strap as shown Tighten and trim the ends Install the top strap buckle...
Page 6 Push the cover down firmly to snap into the bottom plate. Install the 12 screws to retain the top cover to the bottom base. Install & trim the ribbon cable tie wrap Install the top cover Electro-Numerics, Inc. 42213 Sarah Way, Temecula CA 92590 Tel: 800-854-8530 or 951-699-2437...