2 Safety Regulations
2.1 Explosion Protection
On application of units in areas endangered to explosion measures and references in the
Filling of Unit
and
Maintenance
sections, must be observed, so that explosion protection is guaranteed.
Filling of unit
During operation of the pump the system of the suction and pressure pipe and the pump itself must
permanently be filled with the pumped liquid.
Thus, no explosive atmosphere can develop and the danger of dry-run is avoided.
If the operator can´t guarantee that, according monitoring measures must be provided.
NOTICE:
Equally all seal casings, auxiliary systems of the shaft sealing, as well as heating and cooling
systems must be filled carefully.
Marking
The marking of the pump refers to the pump itself. For the motor resp. further additions a separate
Declaration of Conformity, as well as a corresponding marking must be available.
Example of marking at pump: CE Ex II 2 G c T1-T.
The marking shows the theoretically applicable range of temperature classes. The different tempera-
tures, permitted acc. to pump design, result as shown in
Temperature Limits
. The same is valid for the
drive.
For a whole unit (pump, motor) with different temperature classes the lowest is valid.
Rotation Control
If danger of explosion is also existing during installation, the rotation control must not be carried out
by short start-up of the empty pump, to avoid undue temperature increase in case of contact of rotating
and stationary parts.
Operation of pump
The pump must only be started up with fully opened suction side and slightly opened pressure side
valve. The start-up against closed non-return valve, however, is possible. Immediately after the start-up
the discharge side valve must be adjusted to the operating point.
Refer to
6.1.4 Switch on drive on page 29
, as well.
Operation with closed valve in suction and / or discharge pipe is not permitted!
There´s a danger, that high surface temperatures are developing at the pump casing after relatively
short time, through fast heating of the liquid inside the pump.
NOTICE:
Fast pressure increase inside the pump can lead to overload and, thus, the pump can burst.
2 Safety Regulations
10
ICB Installation, Operation and Maintenance Instruction
Содержание Goulds Pumps ICB
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