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4. Installation and Commissioning
4.1 Mechanical installation
4.1.1 Installation

Pumps that have reached operating temperature may
have a surface temperature of more than 70°C de-

pending on a set temperature at the thermostat. WARNING!
Do Not Touch.

VLV vacuum pumps do not vibrate and do not require special
floor fixings.  Care should be taken to align the pump correctly
during installation.  Cooling air inlet and outlet must be at least
0.5 m from the nearest wall.  The ambient temperature in the
installation area should not exceed 35°C.  The pump should be
easily accessible for maintenance and repairs.

The VLV  pumps can only be operated reliably if they are
installed vertically.

For operating and installation follow any relevant
national standards that are in operation.

4.1.2 Suction side

Connect suction pipe to A (see D 140 and D 141) (standard ISO
flange).  This pipe should be as short as possible.  If it is longer
than about 5 m, it must have a greater nominal width than the
pump flange.  Pumps must not be stressed during installation
(intermediate expansion joints may be fitted).  Appropriate
separators should be installed on the suction side for protection
against solids and liquids (accessories).

Solid particles of more than 5 µm and liquid slugs are
able to destroy the compressor stages.

4.1.3 Exhaust

The exhaust resistance within the pipework should
not exceed 0.3 bar overpressure.

3.2.9 Optional extras

Suction side:

• Non-return valve
• Bleed valve
• Solid/liquid separator

Exhaust side:

• Halar-coated oil mist separator

General:

• Electric control system with pre-run and post-run
• Flushing system
• Auxiliary oil reservoir
• Automatic condensate outlet
• Gauge for separator monitoring

3.2.10 Typical applications

• Vacuum for printed circuit board production
• Carbonisation in drink production
• Vacuum packaging of moist products
• Vacuum cooling of foods
• Vacuum filtration
• Vacuum drying
• Vacuum crystallisation
• Thickening of liquids, juices and extracts

3.2.11 VLV pumps with Roots blowers

VLV machines may be used as auxiliary pumps in conjunction
with Roots blowers.
Suction capacities of up to 1,500 m³/hr and final pressures of up
to 1 x 10

-4

  mbar (abs). are achieved according to size and

number of Roots blowers.

3.2.12  Advantages of the VLV range

• Simple installation, no water supply, low motor power
• consumables, no coolant required
• minimum problems of disposal due to minimum

consumables

• environment-friendly oil mist separator

3.2.13 Conditions for use of VLV vacuum pumps

• suction medium should be free from liquids and solids
• pump should be installed, if possible with intake and deliv-

ery pipe draining away from the pump. This prevents
condensate returning to the pump.

• Pre-run and post-run of the pump always necessary when

handling aggressive media.  Pre-run and post-run require
closed suction valve but open bleed valve at about 80 mbar
intake pressure.  The pump is brought to operating tem-
perature to avoid condensation in the cold pump (pre-run).

• After the process, aggressive residues are flushed out by

the injected fresh oil, and the pump is purged before a
stoppage (post-run). The pre-run and post-run last about
20 to 30 minutes.

• Adequate pump cooling must be provided (see 4.1.1 Instal-

lation).

• Check whether ambient air is aggressive as aluminium and

brass parts may be corroded (avoided by coating and
special steel parts).

3.2.14 VLV capability

Use of this pump is generally restricted by the following criteria:
1. Intake temperatures:

• 60°C

(low vacuum > 10 mbar)

• 100°C

(high vacuum < 10 mbar)

2. Intake pressures
3. Suction capacity
4. Product restrictions:

• pump corrosion
• reaction product - oil
• reaction product - metal

Summary of Contents for Elmo Rietschle VLV Series

Page 1: ...80 2 VLV 80 3 VLV 100 2 VLV 100 3 Gardner Denver Schopfheim GmbH Postfach 1260 79642 SCHOPFHEIM GERMANY Fon 49 7622 392 0 Fax 49 7622 392 300 e mail er de gardnerdenver com www gd elmorietschle com B...

Page 2: ...uumpumpen VLV 5 3 2 14 Einsatzgrenzen VLV 5 4 Installation und Inbetriebnahme 5 4 1 Mechanische Installation 5 4 1 1 Aufstellung 5 4 1 2 Saugseite 5 4 1 3 Abluftseite 5 4 2 Elektrische Installation 6...

Page 3: ...len oder ein Ausfall derVakuumpumpezueinerGef hrdung vonPersonenoderEinrichtungenf hrt sind entsprechende Sicherheitsma nahmen anlagenseits vorzusehen 3 Ausf hrungen und Aufbau 3 1 Ausf hrungen Die Ty...

Page 4: ...er 3 bzw 2 Stufen und das obere Rotorlager mit Frisch l versorgt Die lschmierpumpe hat 4 Schmierstellen bei der VLV 2 bzw 6 Schmierstellen bei der VLV 3 Bei der Lagerschmierung flie t das l vom oberen...

Page 5: ...Dauer f r den Vor und Nachlauf liegt bei ca 20 30 Minuten Ausreichende K hlm glichkeit der Pumpe mu vorhanden sein siehe 4 1 1 Aufstellung berpr fen ob die Umgebungsluft stark aggressiv ist da evtl A...

Page 6: ...f r Motor und f r die Steuerung der Kontroll Einrichtungen befinden sich im Klemmenkasten Jede Anschlu klemme der Klemmenleiter hat eine Nummer und alle Anschl sse f r Motor und Kontroll Organe sind...

Page 7: ...ge Weniger l Mehr l lschmierpumpe VLV 25 2 25 3 40 2 40 3 60 2 60 3 80 2 80 3 100 2 100 3 50 Hz 0 065 0 097 0 065 0 097 0 065 0 195 0 065 0 195 0 065 0 195 60 Hz 0 078 0 117 0 078 0 117 0 078 0 234 0...

Page 8: ...t bersteigen Wird das Endvakuum nicht erreicht folgende Arbeiten durchf hren Sieb im Saugflansch ausbauen und reinigen berstr mventile ausbauen auf Funktion berpr fen Vakuum zwischen ND MD und HD Stuf...

Page 9: ...0 2 VLV 80 3 VLV 100 2 VLV 100 3 Gardner Denver Schopfheim GmbH Postfach 1260 79642 SCHOPFHEIM GERMANY Fon 49 7622 392 0 Fax 49 7622 392 300 e mail er de gardnerdenver com www gd elmorietschle com Vac...

Page 10: ...y 5 4 Installation and commissioning 5 4 1 Mechanical installation 5 4 1 1 Installation 5 4 1 2 Suction side 5 4 1 3 Exhaust 5 4 2 Electrical installation 6 4 2 1 General 6 4 2 2 Electrical connection...

Page 11: ...planned shut down of the pump could possibly cause harm to persons or installations then the corresponding safety backup system must be installed 3 Design and Construction 3 1 Models The VLV range is...

Page 12: ...ntainer the oil passes through an overflow orifice back into the fresh oil reservoir 3 2 5 Oil separation The oil containing exhaust flows from the HP stage into the used oil and condensate reservoir...

Page 13: ...cations Vacuum for printed circuit board production Carbonisation in drink production Vacuum packaging of moist products Vacuum cooling of foods Vacuum filtration Vacuum drying Vacuum crystallisation...

Page 14: ...numbered and all connections for motor and monitoring elements are allocated a specific number see circuit diagram Connection numbers must be observed during refitting or repair work to simplify detec...

Page 15: ...tion for VLV l hr Oil Consumption for VLV Roots booster on request VLV 25 2 25 3 40 2 40 3 60 2 60 3 80 2 80 3 100 2 100 3 50 Hz 0 065 0 097 0 065 0 097 0 065 0 195 0 065 0 195 0 065 0 195 60 Hz 0 078...

Page 16: ...the instruction manual c Maintenance during Storage The pumps should be operated once a month for about 2 hours to prevent any kind of corrosion within the pump Please pay attention to the fact that t...

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