Technical information

ITM18 18-5TECHNICAL INFORMATION
original copywriter 1987
revised 07/04 - printed 2008
• APPLY A COAT OF SILICON OIL TO THE GASKET BEFORE INSERTING IT.
• BE CAREFUL NOT TO LET ANY DUST, DIRT OR OTHER CONTAMINANTS ADHERE TO THE SILICON OIL-DIPPED
THE GASKET.
4-5. BATTERY CLAMP
• INSERT THE TWEEZERS INTO THE BATTERY CLAMP SHOWN FIG.-3, AND UNHOOK THE BATTERY CLAMP (THE
DIRECTION OF THE ARROW).
NOTA
WHEN UNHOOKING OR HOOKING THE BATTERY CLAMP, BE CAREFUL NOT TO TOUCH THE ELECTRONIC
COMPONENTS. TOUCHING THESE COMPONENTS MAY AFFECT THE ACCURACY OF MEASUREMENT SUCH AS
WATER DEPTH AND ALTITUDE, OTHERWISE IMPROPER OPERATION.
FIG.-3 UNHOOKING BATTERY CLAMP
4-6. BATTERY
• BE CAREFUL NOT TO CUT YOUR FINGERS ON THE BATTERY CLAMP PLATE.
• IMMEDIATELY AFTER REMOVING THE BATTERY, APPLY A PIECE OF TAPE TO IT OR MARK IT WITH A
PERMANENT MARKER TO DISTINGUISH IT FROM NEW BATTERIES.
• BEFORE INSERTING A NEW BATTERY, USE A TESTER TO CONFIRM THE BATTERY’S VOLTAGE AS 3.0V OR
MORE.
WEAR WORK GLOVES OR FINGERSTALLS WHEN HANDLING THE BATTERY, AS SHOWN BELOW. IF USING
TWEEZERS, BE CAREFUL TO AVOID SHORT-CIRCUITING THE BATTERY. A SHORT-CIRCUITED BATTERY HAS A
GREATLY REDUCED POWER CAPACITY.
HOW TO HANDLE THE BATTERY
• AFTER INSERTING THE NEW BATTERY, CONNECT AC TERMINAL SPOT ON THE CIRCUIT BOARD AND PLUS OF
THE BATTERY (CIRCUIT CLAMP PLATE) BY TWEEZERS. OR SHORT THE TWO SPOTS AT THE CIRCUIT BOARD’S
RESET TERMINAL SHOWED FIG.-4. THESE OF EACH RESET THE SYSTEM.