Elmo Rietschle L-BL2 - Manual (Page 23)

Shutting Down and Longer Standstill
© Gardner Denver Deutschland GmbH 23 / 36 610.44444.40.000
8 Shutting Down and Longer
Standstill
 WARNING
Improper use of the system can result in
serious or even fatal injuries!!
Have you read the safety precautions in
Chapter 1, "Safety", Pg. 4 f.?
Otherwise you may not carry out any work with
or on the system!
NOTE
For the system design, see Fig. 1, Pg. 3. The
item numbers (Item) specified in the text refer
to this illustration.
8.1 Draining
 DANGER
Electrical danger!
Before beginning work on the system, the
following measures must be carried out:
 Deenergise.
 Secure against being switched on again.
 Determine
whether deenergised.
 Ground and short-circuit.
 Cover or block off adjacent energised parts.
 DANGER
Electrical danger!
Work on electrical installations may be carried
out by trained and authorised electricians only!
 WARNING
Danger from vacuum!
Danger due to escaping fluid!
Before beginning work on the system or line:
 Interrupt supply of operating liquid.
 Vent lines (depressurise).
 Shut down system and disconnect mains
plug.
 The above safety precautions apply when
working on the system or line.
 If the feed regulator is installed:
Shut off the feed pipe. Remove the feed
regulator.
 Remove the cover plate (Item 064) and
protective grille (Item 058) from the separator.
 Have a suitable catch container ready.
 Open the following drain openings (see Fig. 1,
Pg. 3):
– Drain opening on separator
(Item 005)
– Drain cooler
(Item. F)
– Drain installed unit
(Item E)
 Allow the liquid to drain out.
 Close all drain openings again.
(Tightening torques: see Chapter 3.1,
"Mechanical data", Section "Tightening
torques", Pg. 9.
 Remount the cover plate (Item 064) and
protective grille (Item 058) on the separator.
8.2
Preparing for longer shut-down
Before a longer shut-down (from approx.
4 weeks) or in case of frost danger, proceed as
follows:
 Drain system as described in Chapter 8.1,
"Draining", Pg. 23.
 Have the cover plate (Item 064) and
protective grille (Item 058) removed from the
separator.
 Models 2BL2 041 - 2BL2 141:
Disconnect pipe/hose from screw-in
connecting sleeve (Item H) of installed unit.
Models 2BL2 251 - 2BL2 341:
Disconnect pipe/hose from condensation
cooler (Item 031).
To remove the pipe/hose, open the clip with
special pliers or a screwdriver.
 Choose a suitable preservative.
Use only anti-corrosive agent based on
ethylene glycol (e.g. Antifrogen from
Hoechst).
 Pour the preservative into the open screw-in
connecting sleeve (Item H) using a funnel or
hose. (See Fig. 13, Pg. 24.)
Filling amount: see Chapter 3.1, "Mechanical
data", Section "Filling quantity for anti-
corrosive agent", Pg. 8. The entire interior of
the installed unit must be filled with anti-
corrosive agent.
 During filling turn the cooling fan by hand by
approx. one turn.
 Reconnect the disconnected pipe/hose.
 Remount the cover plate (Item 064) and
protective grille (Item 058) on the separator.
 You have two options for the standstill:
Either the system remains connected in the
line,
or the system is removed for storage.