Pfeiffer Vacuum UNO 120 A User manual

Rotary Vane Pumps
PK 800 151 BE/G (0311)
UNO/DUO 120 A
Betriebsanleitung • Operating Instructions

2
1. Safety Precautions .................................. 3
1.1. For Your Orientation........................................................... 3
1.2. Pictogramm-Definition ...................................................... 3
2. Understanding The Pumps...................... 4
2.1. Main Features..................................................................... 4
2.2. Differences Between The Pump Types.......................... 4
3. Installation ............................................... 5
3.1. Preparations For Installation............................................ 5
3.2. Pump Assembly And Location ......................................... 5
3.3. Connecting The Vacuum Side.......................................... 5
3.4. Connecting The Exhaust Side .......................................... 5
3.5. Connecting To The Mains Power Supply....................... 5
3.6. Monitoring Connection ..................................................... 7
3.7. Special Models................................................................... 7
4. Operations ................................................ 9
4.1. Filling Up And Checking The Operating Fluid ................ 9
4.1.2.Operating Fluid F5 .............................................................. 9
4.2. Switching The Pump ON And OFF................................... 9
4.3. Gas Ballast Valve ............................................................. 10
4.3.1.Standard Model................................................................ 10
4.3.2 Corrosive Gas Model ....................................................... 10
4.3.3.Magnetic controllable gas ballast valve ..................... 11
4.4. Pumping Off Dry Gases ................................................... 11
4.5. Pumping Off Vapours....................................................... 11
5. What To Do In Case Of Breakdown...... 11
6. Maintenance .......................................... 12
6.1. Replacing The Operating Fluid....................................... 12
6.2. Re-Setting The Silencer ................................................. 12
6.3. Cleaning The Gas Ballast Valve..................................... 14
6.4. Shutting Down For Longer Periods ............................... 14
7. Service .................................................... 15
8. Technical Data ....................................... 16
8.1. Dimensions.........................................................................17
9. Accessories............................................ 17
10. Spare Parts ..............................................17
Contamination Declaration...................................................... 18
Conformity Declaration ............................................. (last page)
Index
Page

3
Danger of damage to the pump or system.
CAUTION
Danger of burns
from touching hot parts.
WARNING
Danger of an electric shock.
WARNING
☞Read and follow all the instructions in this manual.
☞Inform yourself regarding:
☞Hazards which can be caused by the pump;
☞Hazards which can arise in your system;
☞Hazards which can be caused by the medium being
pumped.
☞Avoid exposing any part of your body to vacuum.
☞Observe all safety and accident prevention regulations.
☞Check regularly that all safety requirements are being
complied with.
☞Do not carry out any unauthorised conversions or
modifications on the pump.
☞When returning the pump to us please note the shipping
instructions in Section 7.
1.1. For Your Orientation
Instructions in the text
➡Operating instructions: Here, you have to do something
Symbols Used
The following symbols are used throughout in the illustrations:
Vacuum-flange Gas ballast
Exhaust flange Power connection
Position-Numbers
Identical pump and accessory parts have the same position
numbers in all illustrations.
Danger of injury
from moving parts.
WARNING
Danger of personal injury.
WARNING
1. Safety Precautions
1.2. Pictogramm-Definition
Modifications reserved
Attention to particularly important information
on the product, handling the product, or to a
particular part of the documentation.
☞
PLEASE NOTE

4
2.1. Main Features
2. Understanding The Rotary Vane Pumps
2.2. Differences Between The Pump Types
Type Stage Nominal Attainable
flow rate Final Pressure
at 50 Hz (Total, without
Gasballast)
UNO 120 A one stage 128 m3/h < 3 •10-2 mbar
DUO 120 A two-stage 128 m3/h < 2 •10-3 mbar
The UNO 120 A is a single stage and the DUO 120 A is a two
stage rotary vane pump.
Special features:
– Pressurised oil lubrication
– Hydraulically controlled high vacuum safety valve
– Optional: Oil filter systems, Condensate separator,
Operational monitoring systems.
Proper Use
– Rotary Vane Pumps UNO/DUO 120 A may only be used to
generate vacuum.
– Do not use the pump as a compressor.
– Do not pump corrosive or explosive gases (a special versi-
on for these operations is available on request).
– Do not operate the pumps where explosive processes are
involved. This is only permitted with the "explosive" version
of the pump.
– Using accessories not named in this manual is not permit-
ted without authorisation from PFEIFFER.
Improper use will cause any rights regarding liability and gua-
rantees to be forfeited.
Special Models
Helium tight model:
– Operating Fluid P3
– Leak rate < 1 •10-5 mbar l/s
– Additional radial shaft seal with sealing oil chamber
Korrosivgasausführung:
– Operating fluid F5
– Leak rate < 1 •10-5 mbar l/s
– Additional radial shaft seal with sealing oil chamber
– Vanes made from special materials
– Gas ballast valve in special version
Rotary Vane Vacuum Pumps UNO120 A, DUO 120 A
1 Sight glass
2 Gas ballast valve, complete;
3 Motor,
4 Exhaust flange,
5 Vacuum flange,
15 Casing
18 Baffle Plate
28 Support Stand
42 Operating fluid filler screw
43 Operating medium drain screw
45 Connection socket
142 15 5 4 2 3
43 18 45
28
Improper Use
The following are regarded as improper:
– Uses not covered above, and, in particular:
– Connection to pumps and units which is not permitted
according to their operating instructions.
– Connection to units which contain touchable and voltage
carrying parts.
Improper use will cause any rights regarding liability and gua-
rantees to be forfeited

5
3.4. Connecting The Exhaust Side
Pressure can rise to dangerous levels in
exhaust lines.
Lay exhaust lines without built-in shutoff
devices. If a shut-off device is installed for
internal operating reasons or if there is a risk of
excess pressure developing in the lines, official accident pre-
vention regulations must be complied with.
The exhaust line diameter should not be less than 63 DN.
The line from the pump must be laid with a downward
gradient so that condensate is prevented from flowing back
into the pump. Otherwise a trap must be installed.
Expelled gases and vapours can represent a
hazard to health and/or the environment.
For this reason the relevant regulations must
always be complied with when working with
toxic substances. Only officially approved filters
may be used for the separation of such substances. This also
applies when handling toxic or chemically unstable gases
and to gases susceptible to polymerisation or to the formation
of peroxide (see 9. Accessories).
WARNING
CAUTION
3. Installation
3.1. Preparations For Installation
Do not carry out any unauthorised conversions
or modifications on the pump.
Fill up with operating fluid before operating the
first time (included in a separate pack in the
delivery consignment). When transporting use
only the eyebolts provided for the purpose.
When filled with operating fluid, do not tilt the
pump otherwise operating fluid could escape
via the exhaust opening.
3.2. Pump Assembly And Location
➡Where stationary installation is involved, anchor the pump
on site.
➡Sight glass 1 on the front side must be visible and gas bal-
last valve readily accessible.
➡When installing the pump in a closed housing, ensure the-
re is sufficient air circulation.
CAUTION
WARNING
3.3. Connecting The Vacuum Side
➡Keep the connection between the vacuum chamber and
pump as short as possible.
➡Remove all scaling and loose particles from welded lines
prior to assembly.
– To protect the pump, separators, filters and cooling traps
etc.(see Section 9. Accessories) can be fitted upstream of
the pump. However, the conductance value of the
accessory causes a reduction in volume flow rate.
Where rotary vane vacuum pumps are
anchored, no forces from the piping system
should be allowed to act on the pump.
Suspend, decouple or support all piping
concerned with the pump.
CAUTION
max. 10°
1
Maximum angle of inclination to each side 10Þ
Maximum erection height 2000 m N.N.
Ambient temperature maximum 40 °C and minimum 12 °C
Maximum relative humidity 85%