Table of Contents
Advertisement
Safety Notes
Page 6
packing running dry as this may cause overheating and thus premature wear.
IMPORTANT
•
Based on state-of-the-art technology, the manufacturer carefully selects the materials
for parts coming into contact with the medium as specified by the customer.
The manufacturer shall not be liable for any damage caused by metering other media
or media which has been modified with regard to its properties (concentration, density,
temperature, additives, impurities etc.).
•
Avoid over-feed with positive pressure difference (at least 1 bar) between discharge
and suction sides.
•
Only specially instructed personnel are permitted to operate the metering pump.
The operator must ensure by applying appropriate accident prevention measures that
operating personnel are not endangered under given operating conditions (pressure,
temperature, aggressivity etc.).
2.1
Summary of additional safety instructions for the EX version of the pump
(in accordance with ATEX)
WARNING
•
In explosion-threatened workplaces in zone 1, device category II 2G of explosion
group II C the pump may not be operated without the corresponding rating plate (and
the corresponding EC conformity declaration) for pumps for explosion-threatened
workplaces in accordance with guideline 94/9/EC of the European guidelines.
•
All other uses or modifications are prohibited!
•
Pumps may never be operated in explosion-threatened workplaces without a corres-
ponding rating plate (and the corresponding EC conformity declaration) for pumps for
explosion-threatened workplaces.
•
Installations in potentially explosive atmospheres must be inspected by a „accredited
qualified" person. This applies in particular also for intrinsically safe electrical circuits.
•
Observe all relevant standards e.g. DIN EN 60079, DIN EN 50020, DIN VDE 0165 and/
or DIN VDE 0118 "Installing electrical equipment in explosion-threatened areas"!
•
When installing the metering pump, observe the directives for the installation of
devices in explosion-threatened areas, e.g. for Europe the European operator's
guideline 99/92/EC (ATEX137)*, (in Germany implemented via the new operating safety
ordinance (Official Federal Gazette for 2002, Part 1, No. 70, issued in Bonn 2.10.2002))!
* previously ElexV
•
Read the documentation provided for the individual electrical components.
•
On principle, metering pumps in potentially explosive atmospheres must be equipped
with a safety overflow valve at the outlet side of the pump (serves as protection against
overheating due to overload and against sparks produced by shock due to overload
which has led to the breakage drive parts.)
•
Piston metering pumps, used in temperature class T4, must be equipped with a flow
control at the outlet side (serves as protection against excess temperature due to dry-
running.)
•
For metering pumps with hydraulically actuated diaphragm, the pump must also be
provided with a flow control, if used in temperature class T4. (Protection against
improper heating in case of permanent operation via the internal overflow valve.)
•
Drive motors must be secured by an appropriate motor protection switch. A motor
protection approved for this application must be used for Ex"e"-motors. (Protection
against heating due to overload)
•
Observe also all relevant standards e.g. DIN EN 60079-10/14 and DIN EN 50020
for installations in explosion-threatened areas!
•
Note all national directives which apply to the installation!
•
The proper general function, in particular of the drive, must be safeguarded by regular
inspections (leakages, noises, temperatures, possible discoloration due to excess
temperatures....).
•
Use original spare parts should exchange become necessary!
ProMinent
ProMinent
®
®
Advertisement
Table of Contents
