11
ELRO
®
Pumps for hazardous materials GUP 3-1,5 and GP 20/10Ex
Since the hose chamber (6, Fig. 5) remains
constant, the pressure area (7, Fig. 5) is
decreased by the rotation of the rotor, which
results in a volumetric pumping process
(Fig. 7).
As the rotor rotates further the suction area
becomes bigger. The fast rotation of the
rotor generates a permanent vacuum of
down to -1 bar (Fig. 7).
2.0 Safety
2.1 General
Please make sure that the pump is used
for hazardous materials in compliance with
applicable national safety regulations.
For HAZARDOUS MATERIAL
APPLICATIONS the pump must only
be started up and used by trained and
professional persons and only in the
permitted environment.
The pump must only be used outside or
in well ventilated rooms.
Due to its excellent suction power the
pump for hazardous materials can be used
in explosion endangered environments,
when keeping a safe distance to the danger
source.
The reliable discharge of
electro-static charging, which
may occur during pump
operation, must be assured.
The electric supply cable to the pump
must be fitted with an explosion protected
coupling socket for 380 - 415 V - 16 A
(3P+N+PE), type of protection EEx de
II CT6 such as: CEAG-GHG 531 3506
VO (matching explosion protected plug:
CEAGGHG 531 7506 VO).
The sense of rotation of the electric motor
required for operation of the pump must be
assured by correct polarity from the factory
and should be marked with an arrow on the
motor housing (rotary field clockwise acc. to
DIN VDE 0530 T1).
The pump has been designed for
connection to electric control cabinets acc.
to DIN 14686 or power generators acc. to
DIN 14685 or DIN 14688.
Fig. 7
Fig. 8
7
5
4
6
1
3
4
7
7
6
6
Hose chamber
7
Pressure area
4
Suction area
7
Pressure area
7
5
4
6
1
3
4
7
4
7
7
6
Hazard!
