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ProMinent
ProMinent
®
®
External fans
IMPORTANT
For motors with separate cooling fan (identification code feature „R" or „Z"), a separate
power supply is used for the separate cooling fan!
Actuators/servomotors for stroke length adjustment
Electrical connection of the motors is shown on the enclosed terminal connection diagram and
on the connection diagram provided on the inside of the housing.
IMPORTANT
Stroke length adjustment/control drives must only be operated with the pump running!
5.2
Other electrical components in explosive zones
WARNING
•
Installations in potentially explosive atmospheres must be inspected by a „accredited
qualified" person. This applies in particular also for intrinsically safe electrical circuits.
•
Read the documentation provided for the individual electrical components.
6
Start-Up
WARNING
•
When using with flammable media:
Additional remarks for the application for metering inflammable media.
-
Inflammable media may only be lifted with stainless steel liquid ends. For exceptional
cases, where this is not possible, also PTFE with carbon may be used, our versions
TT are made of conductive plastics. In this case, special attention must be paid by the
user due to the lower mechanical stability.
-
Piston metering pumps must not be used for inflammable media. Suitable additional
control measures must be taken for safeguarding the necessary safety where the
application of piston pumps cannot be avoided: flow control + control of leaking
pistons, as well as an additional temperature control at the liquid end in case of
media used having critical frictional behaviour.
-
Hydraulic diaphragm pumps are well suited, however, version with diaphragm rupture
monitor Ex"i" and a flow control is obligatory.
-
Diaphragm pumps with mechanically actuated diaphragm, at present MTMa.., TZMa..,
Sigma's S1Ba...., S2BaHM..., S3Ba: no additional measures necessary, however,
version with diaphragm rupture indicator, version Ex"i"*, must be used on principle.
-
For all metering pumps for metering inflammable media applies: starting up and
emptying only supervised by a competent person.
•
If using the metering pump for metering flammable media for Europe e.g. the European
operator's guideline 99/92/EC* (ATEX 137**), (in Germany implemented via the new
operating safety ordinance (Official Federal Gazette for 2002, Part 1, No. 70, issued in
Bonn 2.10.2002) and the German dangerous chemicals ordinance))!
*
previously Ex Vo, Vb F
** previously ATEX118a
•
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.)
•
EX-pump only: 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 (ATEX 137)*, (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
Installation, electrical / Start-Up
Page 19
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