Elmo-rietschle L-BV7 Manuel d'utilisateur télécharger pdf (Page 37)

Servicing

Contamination/Problem Remedy

Dirt collects in the motor

cooling fins.

 Clean the motor cooling fins at regular intervals.

Fine-grain dirt (e.g. sand) get

into the vacuum

pump/compressor with the

operating liquid or pumped

gases/vapors.

Install a liquid separator, filter or screen in the feed pipe.

Regularly dismantle and clean the vacuum pump/compressor housing as

follows:

 Shut unit down.

 Drain the pump-motor unit as described in Chapter 10.1, "Draining",

Pg. 34.

 Unscrew the housing with a 36 mm [

"] wrench (in direction of arrow

shown on housing) (see Fig. 15, Pg. 38).

 Remove the housing.

 Dirt has collected in the housing. Rinse out the housing.

 Screw on the housing again (opposite direction of arrow shown on

housing) and tighten with a tightening torque of 50 Nm [36.9 ft lbs].

 When commissioning the pump-motor unit, proceed as described in

Chapter 8, "Commissioning", Pg. 28.

Impeller is jammed.

 Shut unit down.

 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. 16, Pg. 38).

 Free the shaft using the bolt.

 Remove the bolt again.

Extremely hard water used

as operating liquid

Lime content > 15°dH).

Soften operating liquid.

Decalcify the pump-motor unit at intervals of 3 months as follows (also see

Fig. 16, Pg. 38):

 Wear personal protective equipment (protective gloves and safety

goggles),

 Shut unit down.

 Drain the pump-motor unit as described in Chapter 10.1, "Draining",

Pg. 34.

 Remove pipes/hoses.

 Fill the unit with decalcifying liquid through one of the connection

openings. Use 10% solution of acetic acid or another commercially

available decalcifying agent.

 Allow the decalcifying liquid to soak for at least 30 minutes.

 Turn the shaft occasionally during this time. To do this, 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. 16, Pg. 38).

 Turn the shaft using the bolt.

 Remove the bolt again.

 Drain the decalcifying liquid out of the unit. To do this, proceed as

described in Chapter 10.1, "Draining", Pg. 34.

 Mount pipes/hoses.

 When commissioning the pump-motor unit, proceed as described in

Chapter 8, "Commissioning", Pg. 28.

 The decalcifying liquid can be disposed of in the sewer system.

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Elmo-rietschle L-BV7 Manuel d'utilisateur Page 37

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