Elmo Rietschle C-VLR 250/300/400/500 - Manual (Page 17)

17 www.gd-elmorietschle.com © Gardner Denver Schopfheim GmbH, Gardner Denver Deutschland GmbH |
Installation
5.3 Connecting pipes
a) Vacuum connection at (Fig. 2/A... 4/A).
NOTICE
Material damage resulting from the forces and
torques of the pipes on the unit being too high.
Only screw pipes in by hand.
The pumping capacity of the vacuum pump
is reduced if the suction pipe is too narrow
and/or too long..
b) The discharged air can be blown out through
the exhaust silencer (ZSZ) at (Fig. 2/B... 4/B) or
conducted away using a hose or a pipe.
NOTICE
Length of the connection pipes
With connection pipes that have the same pipe
cross section as the machine connection and are
more than 3m long, a non-return valve especially
for the purpose must be installed in order to avoid
reverse operation when the machine has stopped.
Exhaust air must not be restricted
No blocking systems must be built into the
exhaust air pipe (max. pressure difference 30
mbars). When the exhaust air pipe is connected it
must be checked regularly for impurities.
5.4 Regulating and relief valve
The vacuum can be set by turning the control knob
(Fig. 2/C... 4/C) as shown on the symbol fi tted to the
button.
NOTICE
Do not operate without the standard regulating
and relief valve.
If the permissible vacuum is exceeded (see data
plate) the machine may be damaged.