Elmo Rietschle L-BV7 - Manual (Page 34)

610.48060.40.000 34 / 64 © Gardner Denver Deutschland GmbH
Shut-Down and Longer Standstills
10 Shut-Down and Longer Standstills
10.1 Draining
 DANGER
Electrical danger!
Before beginning work on the
unit or system, the following
measures must be carried out:
 Deenergize.
 Secure against being
switched on again.
 Determine whether
deenergized.
 Ground and short-circuit.
 Cover or block off adjacent
energized parts.
 WARNING
Danger due to gauge pressure
and vacuum!
Danger due to escaping fluid!
Before beginning work on the
unit or system:
 Interrupt supply of operating
liquid.
 Bleed lines and vacuum
pump/compressor
(depressurize).
 Switch off the pump-motor unit.
 The above safety precautions apply when
working on the unit or system.
 Provide suitable catch containers below the
vacuum pump/compressor housing.
 Open the screw plug (Fig. 7, Pg. 25,
Item 5).
 Allow the liquid to drain out.
 Close the screw plug again,
tightening torque T
t
= 2 ... 3 Nm
[1.48 ... 2.21 ft lbs].
10.2 Preparing for longer standstill
Before a longer standstill (from approx.
4 weeks) or when there is danger of frost,
proceed as follows:
 Drain pump-motor unit as described in
Chapter 10.1, "Draining", Pg. 34.
 Remove the pipe/hose from the intake or
discharge connection.
 Pour ½ l [0.132 gal (US); 0.110 gal (UK)] of
preservative (rust protection oil, e.g.
Mobilarma 247 form Mobil Oil)
into the open intake or discharge
connection.
 Close the intake and discharge connection,
as well as the operating-liquid port and
remount the disconnected pipes/hoses.
 Guide a M6 or M8 bolt (depending on the
type) with a sufficient shank length through
the center opening into the fan guard and
screw into the shaft end on the external fan
side (see Fig. 14, Pg. 34).
 Turn the shaft by hand using the bolt.
 Remove the M6 or M8 bolt again.
 You have two options for the standstill:
Either the pump-motor unit remains
connected in the system,
or the unit is removed for storage.
Fig. 14: Pour in preservative and turn shaft