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4. The equipment can be used for group II gases (above ground, group I is applicable for mining) in Zones 1 and 2.
For use in combination with group IIC gases, the media must be conductive to prevent built up of static
electricity. For group IIA and IIB gases and for Dust, there are no limitations other than the maximum
allowable media temperature of 95ºC.
5. Make sure that the pump is serviced according to the appropriate service instructions, by a qualified repair
station. Use only original Yamada parts for servicing. Use of non-original parts will make the EX approval
invalid.
6. No modifications or changes to the pump are allowed, this will make the EX approval invalid.
WARNING
WARNINGWARNING
WARNING
•Be sure to connect ground wires to the connected piping and any other connected equipment.
For details, see the applicable operating caution on p.4,5 and 6.
Do not operate the pump without a ground wire or otherwise not properly grounded, friction
caused by some fluids flowing inside the casing may generate static electricity. Also, depending
on the type of fluid being pumped and the installation environment (such as gases in the air or
the surrounding fixtures), it may become an ignition source, resulting in a possible explosion.
•Be careful when using tools at or in the environment of the pump. Dropping of metal objects or
tools
on the pump can cause impact sparks, resulting in an explosion if explosive gas is present.
•Make sure that the pump is serviced according to the appropriate service instruction, by a
qualified repair station. Use only original Yamada parts for servicing. Use of non-original parts
will make the EX approval invalid. Doing so can result in dangerous situations, resulting in an
explosion if explosive gas is present.
•No modifications or changes to the pump are allowed, this will make the EX approval invalid.
Doing so can result in dangerous situations, resulting in an explosion if explosive gas is present.
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