Pfeiffer Vacuum Pascal Series Manual de usuario

OPERATING INSTRUCTIONS

Translation of the original instructions

PASCAL SERIES

Rotary vane pumps 33 to 63 m

EN – 1

Rotary vane pumps

2033 - 2063 SD-C1-C2

Welcome

Dear customer,

You have just bought a Pfeiffer

Vacuum rotary vane pump.

We would like to thank you and

are proud to count you among our

customers.

This product is a result of experience

acquired over many years by Pfeiffer

Vacuum SAS in the design of rotary

vane pumps.

APPLICATIONS:

• RESEARCH AND DEVELOPMENT

• INDUSTRY:

OODSTUFFS (FREEZE-DRYING), PHARMACEUTICAS,

LECTRONIC TUBE MANUFACTURE, METALLURGY, DRYING SYSTEMS, REFRIGERATION SYSTEMS,

HEMICAL INDUSTRY, ETC.

• VARIOUS SEMICONDUCTOR PROCESSES

We suggest that you read this

manual, particularly the chapter on

installation and operation, before

you start to use this pump so that

you can obtain optimum levels

of performance and complete

satisfaction from this equipment.

EN Introduction

The performance and

operational safety of this

product are guaranteed provided

it is used normally in the

operating conditions defined in

this operating manual.

It is the customer’s task to:

- train operators to use the

product if they do not speak the

language the operating manual

is written in,

- ensure operators know the safe

practices to apply when using

the product.

This product is designed to gererate vacuum by pumping on gases,

but no liquids neither solids. It is dedicated for running in industrial

environments.

The pumps must not be operated in an area with risk of explosion.

Consult the nearest support service to study a solution.

EN – 2

The use of Pfeiffer Vacuum products are subject to copyright and intellectual

property rights in force in any jurisdiction.

without prior written authorization from Pfeiffer Vacuum SAS.

Specifications and information are subject to change without notice by

Pfeiffer Vacuum SAS.

This product complies with the requirements of European Directives. listed in

the Declaration of Conformity contained in page 47 of this manual.

Indicates a potentially hazardous situation which, if not avoided, could result

in moderate or minor injury. It may also be used to alert against unsafe

practices.

Indicates a potentially hazardous situation which, if not avoided, could result

in property damage.

Indicates an imminently hazardous situation that, if not avoided, will result

in death or severe injury (extreme situations).

Indicates a potentially hazardous situation which, if not avoided, could result

in death or severe injury.

Before switching on the product, study the user’s manual and make sure

you follow the safety instructions it gives. You can recognise these by the

‘Caution’, ‘Warning’ and ‘Danger’ symbols.

Good practice tips and manufacturer’s recommendations are in a grey box.

Symbol / Label Description

Warning: high temperature hazard

Warning: electrical shock hazard

Danger: refer to operating instructions

IN Pump inlet flange

OUT Pump exhaust flange

EN – 3

Contents

Introduction

Presentation of the product range ......................................................... 4

2033 - 2063 m3/h rotary vane pumps - SD, C1, C2 Pascal series ........... 5

Operating principle of the rotary vane pump ......................................... 6

Oil - Noise limiter - Antisudback ............................................................ 8

Technical characteristics ......................................................................... 11

Pump dimensions .................................................................................. 13

Accessories ............................................................................................ 14

Start-up

Safety instructions concerning the installation and operation................. 15

Table of recommended oils .................................................................... 18

Filling with oil .......................................................................................... 19

Mechanical connections......................................................................... 21

Electrical connections............................................................................. 24

External motor protection, electrical protection...................................... 27

Operation

Preliminary precautions .......................................................................... 29

Operating temperature .......................................................................... 29

Before starting up the pump.................................................................. 30

Start-up ................................................................................................. 30

Cold start-up ......................................................................................... 30

Pump stop .....................................................................................................30

To prevent any pumping hazard.....................................................................31

Operation of gas ballast......................................................................... 33

Purges for pumping condensable, corrosive and hazardous gases.......... 35

Oxygen pumping ................................................................................... 36

Recovery of oil (high pressure pumping and cycling) .............................. 37

Maintenance

Safety instructions for maintenance ....................................................... 39

Troubleshooting and corrective actions .................................................. 40

Maintenance frequency ......................................................................... 43

Draining................................................................................................. 44

Flushing................................................................................................. 44

Change of oil type................................................................................. 45

Start-up after pump disassembly or oil change ...................................... 45

Declaration of Conformity ................................................................. 47

Maintenance instructions ............................... available on web site

Translated from original version

MANUEL P/N: 105527

EDITION : 05 - October 2015

IntroductionStart-upOperationMaintenance EN

EN – 4

Presentation of the product range

A wide range

Specific solutions adapted to

various applications

SD series

Oil seal rotary vane pumps are used in all vacuum technology applications.

They can be used on their own to achieve a maximum vacuum of 1·10-3 Torr

(1·10-3 hPa) or in pumping assemblies. e.g. at the exhaust of a diffusion pump or

turbomolecular pump.

Standard pumps for several purposes (non-corrosive applications).

Manufacture of light bulbs, production of TV tubes, manufacture of electronic tubes,

metallurgy, centrifuges, etc.

Pumps suited to the pumping of corrosive gases.

R&D, laboratories, freeze-drying, pumping of solvents, etc.

Pumps with increased resistance to meet the requirements of the more

aggressive processes of the semiconductor industry.

Ion implantation, sputtering, etc.

Nominal flow rate

m3/h 30 60

SD Series 2033SD 2063SD

C1 Series 2033C1 2063C1

C2 Series 2033C2 2063C2

C1 series

C2 series

EN – 5

2033 - 2063 m3/h rotary vane pumps.

SD, C1, C2 Pascal series

The 33 to 63m3/h pump models,

have following main characteristics:

– A direct drive motor making

them very compact.

– An anti-suckback system

ensures the tightness of the

pump during accidental or

voluntary shutdowns.

– A gas ballast enables the

pumping of condensable vapors.

– The universal three-phase

motor can be disassembled

independently of the rest of

the pump, without the need to

drain the oil case.

– On the oil case, a sight glass

can be used to inspect the oil

level easily when filling the oil

case and during the operation of

the pump.

– A neutral gas purge is used

to degas oil and dilute pumped

gases on C1 and C2 series

models.

– An oil casing purge is used to

dilute the pumped gases on C2

series models.

– Sensor connections for oil

pressure or temperature sensors

are available on C2 series

models. The inlet and exhaust end fittings are PNEUROP ISO-KF standardized.

They can be used to connect many of our accessories (see page 14).

The main remplacement parts are interchangeable: This enables easier disassembly-

assembly operations and replacement without changing the pump’s performance.

Various accessories can be used to adapt the pump to meet the requirements of your

application.

1. Oil case

2. Base

3. Frame

4. Electric motor

5. Gas ballast control

6. Spring hook (lifting device)

7. Inlet end fitting

8. Exhaust end fitting

9. Oil case filling plug

10.Sensor connections (C2 Series)

11.Oil level sight glass

12.Oil draining plug

13.Oil filter (C1 Series)

EN Introduction

11 12

84 7 6 5 9

21 11

EN – 6

Operating principle

of the rotary vane pump

The pumping cycle is

given below:

Inlet

Transfer

Compression

Exhaust

This is a volumetric pump, with a functional part composed of:

• A hollow cylindrical stator with inlet and exhaust valves.

• A rotor mounted eccentrically inside the stator for pumping.

• Two vanes sliding in the rotor, forced against the stator by centrifugal force and

springs.

Single-stage

rotary vane pump

As the vane passes in front of the inlet

orifice, an increasing space is formed into

which the gas from the chamber to be

evacuated expands.

When the second vane passes, the space is

closed.

The gas trapped in the space between the

two vanes is transferred to the exhaust

orifice as the rotor rotates.

The space communicates with the exhaust.

which is fitted with a valve: the gas is

compressed until the safety valve is opened.

The gas is expelled into the oil casing when

the pressure is sufficient to open the valve.

In. Exh.

EN – 7

Two-stage

rotary vane pump

To improve the backing pressure and flowrate at low pressure, two stages are

connected in series. The second is similar to the first both structurally and operationally.

The gases pulled in by the first stage (low pressure) are transferred to the second stage

(high pressure) and discharged through the high pressure (HP) valve.

Applications Two stage rotary vane pumps are the best choice for application requiring an ultimate

vacuum as low as 5·10-3 hPa.

Note: when operating a two stage vane pump continously, greater than half an hour

- above 1 hPa,

- or with opened gas ballast,

the unit should be equipped with an oil mist eliminator equipped with an oil return

system.

In.

Low pressure stage

Exh.

High pressure stage

EN Introduction

EN – 8

Oil - Noise limiter - Antisuckback

Oil has several important functions in the pump:

– It lubricates mechanical components (bearings, seals, rotor, vanes, etc.).

– It makes moving parts relatively tight by limiting internal leakage.

– It carries away the heat produced by the compressed gases.

Oil

Choosing the right oil Not all oils produce the same ultimate pressure in a given pump. Ultimate pressure

depends on the saturated vapor pressure of the oil, its viscosity and its ability to dissolve

gases.

Good pumping conditions are related to the type of oil used. The choice depends on:

– Expected pump performance.

– Chemical aggression and corrosion of pumped gases.

– Accessories used.

– Desired maintenance intervals and total operating cost.

The manufacturer has selected various types of oil for its pumps (see page 18).

Lubrication The pump is equipped with a lubrication system which regulates the oil flow rate

required in the vacuum pump. In addition this system also ensures the gassing of

the lubrication oil and therefore the low noise level of the pump.

When the pump begins

to operate, the cooled

oil (from the bottom of

the oil casing) is pulled

in by the oil pump (2)

and drawn in through

the oil inlet tube (3). It is

then agitated by a venturi

tube (4) and forced

into the chamber (6)

which is adjusted by the

diaphragm spring system (7).

The discharge pressure of the oil pump (2) lifts the diaphragm off its seat (8) allowing

oil to reach the functional block via the oil injection line (through seats) (8). An orifice

(9) equipped with a jet located in the oil lubrification systems allows trapped gases to

be expelled out of the chamber (6).

C1 series

C1 series pumps are equipped with an automobile type oil filter, which traps particles

from the oil pumps exhaust. Due to its construction, its life time is reduced when

pumping on corrosive products in large quantities. In this case, an auxiliary oil filtering

system is recommended and the filter is replaced by a stainless steel short-circuit

stopper (see accessories page 14).

EN – 9

Parallel to the oil flow, there is a small orifice in the venturi tube (5), which reduces the

noise level at ultimate pressure. Because of the negative pressure created at the end of

the venturi tube (5), gases are entrained into the moving layers of oil dampening pump

noise, allowing the fluid to become more compressible.The added gases will affect the

ultimate pressure, therefore, a compromise between sound level and ultimate pressure

has to be reached as follows:

- Tightening down air intake tube (5) decreases the oil flowrate at the intake of the oil

pump (2) and increases the amount of gas mixture in the oil. The sound level decreases

but the ultimate pressure increases.

- Unscrewing tube (5) increases the oil flowrate at the intake of the oil pump (2) and

decreases the amount of air mixture with the oil. The sound level increases but the

ultimate pressure decreases.

This adjustment can be performed via the oil fill port while the pump is in operation at

ultimate pressure.

Anti-noise

Anti-suckback

and tightness at

stopping

When the pump is stopped or the power is turned off, the anti-suckback device (6),

(7) and (8) isolates the functional block of the pump against air or oil returning to the

chamber being evacuated.

When the pump stops, the discharge pressure of the oil pump (2) drops rapidly through

the jet (9). Diaphragm (7) under pressure from spring and the difference of pressure is

forced againts its seat (8) thus closing off the injection line through the seat (8).

The seal is also ensured by flush-mounted o-rings between the faces of the functional

parts (stators, flanges, housing...) and by spring loaded check valves in the discharge

ports.

Gas ballast When condensable vapors are being

pumped, gas is compressed beyond

its saturated vapor pressure in

the «compression» phase and

can condense, impairing pump

performance and life.

The gas ballast can be used to inject

a certain quantity of air (inert or dry

gas) into the last stage of the pump

during the «compression» phase so

that the partial pressure of the pumped gas is less than its saturated vapor pressure

at the temperature of the pump. Condensation is therefore impossible if this limit is

not reached.The maximum admissible vapor pressure is obtained at pump inlet for this

value.

At the end of «compression», the pressure in the exhaust chamber is greater than

atmospheric pressure. An anti-suckback device (valve + spring) prevents the gases and

oil from being draw back into the inlet.

The saturated vapor pressure of a body is higher when the system is hot than when

it is cold; therefore, the pump must reach operating temperature before pumping

condensable vapors.

In.

COMPRESSION

air

Exh.

EN Introduction

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