A&D EK-300EP, Instruction Manual, Page: 6 / 36

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3. PRECAUTIONS
3-1. Precautions on Explosion-Proof Structure
 Do not disassemble or modify the balance.
 When determining the installation site, take the following into consideration.
Will explosive gases be generated? How often will they be generated?
Refer to “5. CONFORMING STANDARDS.”

The enclosure of the balance contains accessible metal parts and could be
susceptible to electrostatic charges that could be a source of ignition. The user
must consider a value of 170pF capacitance when considering suitability for use.
Refer to IEC TS60079.32-1 for guidance.
 Part of the enclosure is constructed of plastic. To prevent the risk of electrostatic
sparking, clean the non-metallic surface only with a damp cloth.
 Replace the batteries in non-hazardous areas.
 As a power source, only the four “AA”, “LR6” or “AM3” alkaline 1.5 V batteries
listed below can be used.
DURACELL MN1500, ENERGIZER E91, Panasonic LR6(XJ)
 When replacing the batteries, be sure to prevent foreign materials from entering
the battery compartment.
3-2. Precautions on Installation
 Do not install the balance where corrosive gases are present.
 Do not install the balance where the balance will get wet or soaked with water.
 Do not install the balance where the balance will be exposed to direct sunlight,
drafts, vibration, large temperature fluctuations, condensation or magnetism.
 Do not install the balance near air conditioners or heaters.
 Use a solid weighing table to keep the balance level.
 Level the balance by adjusting the leveling feet and confirm it using the bubble spirit level.
 Allow the balance to reach equilibrium with the ambient temperature before use.