Elmo Rietschle L-BL2 - Manual (Page 29)

Servicing
© Gardner Denver Deutschland GmbH 29 / 36 610.44444.40.000
Contamination/Problem Remedy
 Allow decalcifying liquid to soak for at least 30 minutes.
 During this time occasionally turn shaft by hand at fan impeller.
 Have a catch container ready under the system.
 Drain installed unit:
Open drain hole G¼ (Item E) of installed unit. The antiliming liquid will be
discharged downward via the opening in the bottom of the separator. This
will not cause chemical corrosion of the separator. Close the drain hole
again.
 Reconnect pipe/hose to screw-in connecting sleeve (Item H) or to
condensation cooler (Item 031).
 Remount cover plate (Item 064) and protective grille (Item 058) on
separator.
 Completely reassemble system.
 Antiliming liquid can be disposed of in sewerage system.
OR
Decalcify the entire system.
Depending on the operating conditions and the lime content of the operating
liquid, it may be necessary to decalcify the entire system. To do so, proceed
as follows:
 Use
citric acid as antiliming liquid.
 Pour
citric acid into system via filling opening (Item 007). Filling quantity
of pure citric acid (in the form of granules), the system being at a medium
operating-liquid level: See Chapter 3.1, "Mechanical data",
Section "Filling capacity for antiliming agent", Pg. 8.
 Operate system approx. 10 h with operating liquid with citric acid added.
Citric acid will dissolve lime in the process.
 Then drain system as described in Chapter 8.1, "Draining", Pg. 23.
 Flush system several times with clean water.
9.2 Repairs/troubleshooting
NOTE
If the fault cannot be eliminated using the fault
table etc., it is necessary to consult the Service
Department.
NOTICE
Have spare parts installed exclusively by the
Service Department!
NOTICE
During assembly, the tightening torques of the
screws/bolts according to Chapter 3.1,
"Mechanical data", Section "Tightening
torques" Pg. 8, must be observed.