General
10
0.6.9.
Preventing the build-up of explosive mixtures
WARNING
- ENSURE PUMP IS PROPERLY FILLED WHENEVER POSSIBLE AND DOES NOT RUN
DRY FOR LONGER THAN 5 MINUTES CONTINUOUSLY.
Ensure the pump and relevant suction and delivery pipeline system is totally filled with media during the
pumping operation, so that an explosive atmosphere is prevented.
If the operation of the system cannot avoid this condition, ensure that the pump does not run dry for more
than 5 minutes continuously.
0.6.10.
Preventing sparks
To avoid the potential hazard from an electrostatic charge generating a spark, the earth stud on the pump
casing or foot must be connected to ground.
Do not rub non-metallic surfaces with a dry cloth for cleaning.
0.6.11.
Preventing leakage
The pump must only be used to handle media for which it has been approved to have the correct corrosion
resistance.
Avoid entrapment of media in the pump and associated piping due to closing of suction and delivery valves,
which could cause dangerous excessive pressures to occur if there is heat input to the media.
0.6.12.
Maintenance to the double diaphragm pump to avoid potential hazards
WARNING
- CORRECT MAINTENANCE IS REQUIRED TO AVOID POTENTIAL HAZARDS WHICH
GIVE A RISK OF EXPLOSION.
The responsibility for compliance with maintenance instructions is with the plant operator.
To avoid potential explosive hazards during maintenance the tools used must not give rise to sparking or
adversely affect the ambient conditions. Where there is a risk from such tools or materials, maintenance
must be conducted in a safe area.
It is recommended that a maintenance plan and schedule is adopted, in line with the user instructions
provided, to include the following:
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