20
ELRO
®
Pumps for hazardous materials GUP 3-1,5 and GP 20/10Ex
Turn the pulsation damper onto the free
thread and tighten it.
Install the pulsation damper
only with the pump switched
off, tighten the clamping strap
of the pulsation damper before
starting operation.
4.2.5 Transfer of highly liquid
hazardous fluids
Start the pump only when
wearing your personal
protective outfit.
Starting work
1. Connect and tighten the pulsation
damper.
2. Connect suction and pressure hoses
DN 50 for chemical applications.
3. Connect a stainless steel suction pipe
to the suction hose.
4. Connect a stainless steel safety
discharge pipe to the end of the
pressure hose, min. DN 50.
5. Connect an earth strap to discharge
electro-static charging.
6. Connect the electric motor and switch
on speed stage I or stage II.
7. Watch the pressure gauge (the pointer
must be in the negative sector).
Note:
The pump primes immediately without being
filled.
In order to avoid overflowing of tanks when
transferring fluids, the pump is switched to
speed stage I and finally switched off when
the filling limit is reached.
If a shut-off device is installed
in the pressure side, this must
always remain open when the
pump is running.
4.2.6 Pumping of highly viscous pulpy
product
Start the pump only when
wearing your personal
protective outfit.
Starting work
1. Connect and tighten the pulsation
damper.
2. Connect suction and pressure hoses
DN 50 for chemical applications (do not
use corrugated stainless steel hoses).
3. Connect a special suction pipe to the
end of the suction hose.
4. Connect a discharge elbow without
shut-off device to the end of the
pressure hose, min. DN 50.
5. Connect an earth strap to discharge
electro-static charging.
6. Connect and switch on the electric
motor (speed stage I).
7. Watch the pressure gauge on the
suction socket.
Note:
If a shut-off device is installed
in the pressure side, this must
always remain open when the
pump is running.
Caution!
Caution!
Warning!
Caution!
Caution!
