Welch MXPC 303 Z User manual

Operating manual
(EN)
Translation of the original German operating manual
Diaphragm Pumping Station
MXPC 303 Z - 230V
MXPC 603 T - 230V
117057
Vers.01/Rev.00 2021-12-16

Manufacturer
Gardner Denver Thomas GmbH
Am Vogelherd 20
98693 Ilmenau
Germany
Imprint
© 2020
No part of this publication may be
reprinted or reproduced in any form or
by any means without the prior written
permission of Gardner Denver Thomas
GmbH.
All rights under copyright law are
reserved by Gardner Denver Thomas
GmbH.
Subject to change without notice.
Tel: [phone]
Fax: [phone]
E-mail: welch.em[email protected]
Website: www.welchvacuum.com

Contents
Operating Instructions MXPC 303 Z/603 T 3
Contents
1Important information.......................................................................................5
1.1 Note for the user/personnel............................................................................................................5
1.2 Warnings and information..............................................................................................................6
1.3 Explanation of safety symbols .......................................................................................................6
1.4 Explanation of abbreviations..........................................................................................................7
2Safety.................................................................................................................9
2.1 General information........................................................................................................................9
2.1.1 Appropriate use............................................................................................................................. 9
2.1.2 Use contrary to the intended purpose........................................................................................... 9
2.1.3 Foreseeable misuse.................................................................................................................... 10
2.2 Target groups...............................................................................................................................10
2.2.1 Qualification of personnel............................................................................................................ 10
2.2.2 Overview of responsibilities......................................................................................................... 10
2.3 Safety precautions .......................................................................................................................11
2.3.1 General safety precautions......................................................................................................... 11
2.3.2 Safe operation............................................................................................................................. 11
2.4 Special hazards............................................................................................................................12
2.4.1 Hazardous substances................................................................................................................ 12
2.4.2 Electricity..................................................................................................................................... 13
2.4.3 Mechanics................................................................................................................................... 13
2.4.4 Temperatures.............................................................................................................................. 14
2.4.5 Vacuum....................................................................................................................................... 15
3Technical data.................................................................................................16
3.1 Dimensions...................................................................................................................................16
3.2 Characteristic values....................................................................................................................17
3.2.1 Pumping speed ........................................................................................................................... 17
3.2.2 Parameters.................................................................................................................................. 17
3.3 General Connections ...................................................................................................................18
3.4 Materials.......................................................................................................................................18
4Description......................................................................................................19
4.1 Scope of application.....................................................................................................................19
4.2 Structure.......................................................................................................................................19
4.2.1 Device display............................................................................................................................. 19
4.2.2 Pneumatic inlet............................................................................................................................ 20
4.2.3 Material........................................................................................................................................ 21
4.2.4 Motor thermal protection............................................................................................................. 21
4.2.5 Gas ballast .................................................................................................................................. 21
4.3 Attachment parts..........................................................................................................................22
4.4 Accessories..................................................................................................................................22
4.4.1 Accompanying material............................................................................................................... 22
4.4.2 Optional fittings ........................................................................................................................... 22

Contents
4 Operating Manual MXPC 303 Z/603 T
5Setting up and connecting ............................................................................ 24
5.1 Unpack ........................................................................................................................................ 24
5.2 Setting up .................................................................................................................................... 24
5.3 Assembly..................................................................................................................................... 24
5.4 Connect ....................................................................................................................................... 24
5.4.1 Connecting pneumatics...............................................................................................................24
5.4.2 Connecting cooling water............................................................................................................25
5.5 Electrical connection.................................................................................................................... 25
5.6 Storage........................................................................................................................................ 26
6Operation ........................................................................................................ 27
6.1 Commissioning............................................................................................................................ 27
6.2 Safe operation............................................................................................................................. 27
6.3 End of process............................................................................................................................. 28
7Operating faults.............................................................................................. 29
8Maintenance.................................................................................................... 30
8.1 Maintenance and inspection........................................................................................................ 30
8.2 Maintaining by cleaning............................................................................................................... 30
8.3 Repairs carried out by the operator............................................................................................. 31
8.3.1 Disassembly................................................................................................................................32
8.3.2 Assembly.....................................................................................................................................33
8.3.3 Functional test .............................................................................................................................34
8.4 Repairs carried out by the manufacturer..................................................................................... 34
8.5 Disposal....................................................................................................................................... 34
9Spare parts...................................................................................................... 35
9.1 Spare parts overview................................................................................................................... 35
9.2 Contact details for Support or to place an order ......................................................................... 35
10 Annex .............................................................................................................. 36
10.1 EU Declaration of Conformity...................................................................................................... 36
10.2 Notes ........................................................................................................................................... 37

Important information
Operating Manual MXPC 303 Z/603 T 5
1 Important information
ATTENTION
Read the operating instructions carefully before use.
Keep the operating instructions for future reference.
1.1 Note for the user/personnel
Safety
The user/personnel must have read and understood the operating instructions completely
before starting work.
The operating instructions must be kept at the place of use at all times and be available to
the user/personnel.
Transfer of the product without operating instructions is not permitted.
Safe operation can only be guaranteed by proper, and sound use of the product. Safety
instructions must be observed!
General information
Vacuum equipment / vacuum system generally describes a combination of components for
vacuum applications, such as a rotary evaporator with vacuum control device and a vacuum
pump.
The operator is responsible for the proper use of vacuum equipment/vacuum systems.
About the device
Throughout the rest of this guide, the diaphragm pumping station is referred to as the
"device".
"Device" describes the entire product, consisting of the integrated vacuum pump, add on
components and various other parts.
Generally, the pneumatic connections are referred to as follows:
othe inlet refers to the "suction side" and
othe output refers to the "pressure side" for exhaust gas.
Condensate catchpots are often referred to as separators.

Important information
6 Operating Manual MXPC 303 Z/603 T
1.2 Warnings and information
Warnings are illustrated as follows:
DEGREES OF RISK
Additional
symbols
Type and source of danger.
Consequences if warning is not heeded.
Measures for escaping/avoiding danger.
Degrees of risk
DANGER
Indicates a grave danger that will result in
dangerous injuries or have fatal consequences.
WARNING
Indicates a potentially dangerous situation which, if
not prevented, may result in serious injury or life-
threatening consequences.
CAUTION
Indicates a potentially dangerous situation. If not
prevented, it could lead to minor injuries.
Safety instructions and information
Additional
symbol
SIGNAL WORD
Important instructions/information for the user/operator.
1.3 Explanation of safety symbols
Symbol
Explanation
General warning sign
Danger: high voltage
Explosive atmosphere warning
Hot surface warning
Toxic substances warning
Low temperature warning

Important information
Operating Manual MXPC 303 Z/603 T 7
Symbol
Explanation
General prohibition sign
General mandatory sign
Turn off power when not in use
Protective clothing –Gloves
Protective clothing –Goggles
Follow the operating instructions
General information
1.4 Explanation of abbreviations
Abbreviation
Designation or meaning
Explanation
A
Ampere
Electrical unit
Fig.
Figure
Designation
abs.
absolute
Value
AC
Alternating current
Electrical unit
OD
Outer diameter
Dimension
ATM
Atmosphere
Pressure
DC
Direct current
Electrical unit
DN
Nominal size –inner diameter
(French diamètre nominal)
Dimension
EPDM
Ethylene propylene diene rubber
Materials
EX
Exhaust
Connection designation
hh:mm:ss
Hour/minute/second
Time
hPa
Hectopascal (1 hPa = 1 mbar = 0.75 Torr)
Pressure unit
Hz
Hertz
Electric unit
IN
Inlet, suction connection
Connection designation
ID
Inner diameter
Dimension
SGJ
Spherical ground joint (DIN 12264)
Connection designation

Important information
8 Operating Manual MXPC 303 Z/603 T
Abbreviation
Designation or meaning
Explanation
max.
Maximum
Value
mbar
Millibar (1 mbar = 1 hPa = 0.75 Torr)
Pressure unit
min.
Minimum
Value
mm
Millimetre
Dimension
MXPC
Diaphragm pumping station (chemical resistant)
Device type
pneum.
Pneumatic
Connection designation
PP
Polypropylene
Materials
PTFE
Polytetrafluoroethylene
Materials
PVDF
Polyvinylidene fluoride
Materials
RH
Relative humidity in %
Environmental condition
Torr
Torr (1 Torr = 1.33 mbar = 1.33 hPa)
pressure unit
V
Voltage
Electrical unit
W
Watt
Electrical unit

Safety
Operating Manual MXPC 303 Z/603 T 9
2 Safety
2.1 General information
The following safety and warning instructions must be read and understood by all users of
the device.
All operations may be carried out by trained personnel only. They must be familiar with and
follow the particular hazards and understand how to operate the device and understand the
operating instructions.
The device may only be used when it is in a technically perfect condition.
2.1.1 Appropriate use
ATTENTION
The design of the device must correspond to the conditions of use. The
operator is solely responsible for this.
Any use deviating from the above will be considered improper!
The device may only be operated under the following conditions mentioned in the:
ochapter 3Technical data
oon the type plate and
oin the technical specifications for each order.
The device is intended exclusively for vacuum technology applications.
Gaseous media only may be pumped.
The device is intended for indoor use only.
The following shall also be deemed as intended:
Observe these operating instructions including any safety/warning instructions.
Define and enforce safety precautions (see chapter 2.3 Safety precautions).
Compliance with the operating instructions for connections.
Use of approved spare parts and accessories from Gardner Denver Thomas GmbH.
2.1.2 Use contrary to the intended purpose
CAUTION
Risk of injury due to improper use!
Use for purposes other than those for which it is intended may result in personal
injury.
The operator must ensure operation is in accordance with
2.1.1 Appropriate use!
The following shall be considered as use contrary to the intended purpose:
Applications that do not correspond to the intended use (see chapter 2.1.1 Appropriate use).
Use outside the specifications stated:
othe technical data,
oon the type plate or
oin the conditions set out in the delivery contract.
Operation in an unsound technical condition.
Outdoor operation.

Safety
10 Operating Manual MXPC 303 Z/603 T
ATTENTION
The operator must prevent applications that are not in accordance with the
intended use. Precautions must be taken to ensure operation is in accordance
with the intended use!
2.1.3 Foreseeable misuse
ATTENTION
Misuse is generally PROHIBITED. It is also considered contrary to the intended
use!
The following is considered foreseeable misuse:
Manipulation of the device, e.g., unauthorised additions or modifications.
Leaving critical applications unattended.
Operating the device with tools or other unauthorised objects.
Conveying inadmissible or liquid media.
Operation by untrained or non-expert personnel.
Safety precautions are inadequate or non-existent.
Failure to comply with the regulations applicable by law.
Operation in an explosive application and environment.
2.2 Target groups
ATTENTION
Use by untrained personnel may result in misuse.
The operator must ensure that personnel is properly trained and that all the
necessary safety precautions are observed!
2.2.1 Qualification of personnel
User
Field of activity
User
Laboratory personnel, e.g., chemists
Operator
Responsible representative (processes)
Specialist
Person with professional qualifications, e.g., mechanic,
electrician, laboratory manager etc.
Manufacturer
Service and maintenance/servicing by the
manufacturer or authorised service provider only
2.2.2 Overview of responsibilities
Activity
User
Specialist
Manufacturer
Set up/Connection
x
x
x
Commissioning/Operation
x
x
x
Analysis of operational
malfunctions
x
x
x
Troubleshooting
(1)
x
x
External maintenance/inspection
x
x
x
Internal maintenance/inspection
(1)
x
x
Repair operator
(1)
x

Safety
Operating Manual MXPC 303 Z/603 T 11
Activity
User
Specialist
Manufacturer
Damage report
x
x
Decontamination
(2)
Disposal
x
x
(1)Implementation by specially trained users only.
(2)Implementation by qualified and authorised service providers only.
2.3 Safety precautions
2.3.1 General safety precautions
ATTENTION
For user safety, the operator must define and enforce the safety precautions.
Failure to do so may endanger the health of the user.
All safety precautions must have the highest priority to ensure the life and health of persons. In
the event of possible safety risks, these are to be assessed and precautions taken to avert
danger. Applications with a risk to life and limb are not permitted.
Applicable operating instructions by the operator and statutory regulations for
accident prevention, and occupational health and safety must be observed.
PROTECTIVE CLOTHING
Protective clothing must be worn for applications requiring PPE.
The operator must specify the type and use of protective clothing.
2.3.2 Safe operation
Observe the following!
Operation in accordance with the safety requirements in chapter 2.1 General information.
Use according to chapter 6.2 Safe operation.
The separators can only be emptied after ventilation of the vacuum system (see chapter
2.4.5 Vacuum and 6.3 End of process).
Beware of potential hazards due to substances being pumped (see chapter
2.4.1 Hazardous substances).
Pneumatic connections must be in accordance with chapter 5.4.1 Connecting pneumatics.
Check attachment for damage (see chapter 5.1 Unpack).
Exhaust pressure must be atmospheric.
Do not exceed the device's maximum operating height (see chapter
3.2 Characteristic values).

Safety
12 Operating Manual MXPC 303 Z/603 T
Vapour pumping
In vapour applications, condensate may form in the pump feed. If required by the application, a
capacitor must be connected upstream to protect the pump. Usage must be defined by the
operator.
ATTENTION
Condensation can greatly reduce the service life of the components, especially
the diaphragms.
For vapour applications, the gas ballast must be used (see chapter
4.2.5 Gas ballast).
The device must be at the operating temperature before the application is
started.
NOTE If the device is at the proper operating temperature, less condensate is formed in the
feed.
2.4 Special hazards
EMERGENCY SHUTDOWN
In hazardous situations, disconnect the device from the mains by pressing the
main switch or pulling the mains plug (Fig. 5-2).
NOTE If no voltage is applied, the motor stops, and any valves are closed.
2.4.1 Hazardous substances
WARNING
Risk to health due to hazardous substances!
Hazardous substances in the medium can endanger the health of persons.
Safety and warning instructions for handling hazardous substances must be
observed!
HAZARDOUS SUBSTANCES
For applications involving substances bearing a GHS label, precautions must
be taken to protect human health and the environment.
The operator must, in compliance with the applicable regulations, assess
possible risks in order to prevent personal injury, or damage to the environment
and property.
This is the responsibility of the operator.
ATTENTION
Operation with media that belong to a biological risk group that can endanger
human health, e.g., viruses or bacteria, is generally prohibited.

Safety
Operating Manual MXPC 303 Z/603 T 13
Beware of applications using hazardous substances!
The requirements laid down in the safety data sheets of the manufacturers must be complied
with for hazardous substances.
Prevent toxic and environmentally harmful substances escaping from the equipment.
Use the attachment parts to protect the environment and equipment (see
chapter 4.3 Attachment parts).
Check the tightness and strength of the connection lines and all other connected
components.
Hazardous substances should be separated as much as is technically possible before
entering the pump.
MATERIAL RESISTANCE
For applications involving aggressive media, the user must assess the
resistance of the wetted parts of the device (see chapter 4.2.3 Material).
2.4.2 Electricity
DANGER
Danger to life due to electric current.
There is an immediate danger to life from electric shock if live parts are touched.
It is generally prohibited to open the device.
Observe the following instructions:
It is prohibited to operate the device without the casing.
If the device is defective, switch it off and disconnect the mains plug.
The mains plug and the cable must be in perfect condition.
Main protective conductor: The connection must comply with the legal requirements.
Beware that the device is permanently connected and may not be considered portable.
2.4.3 Mechanics
ATTENTION
Improper use or manipulation of the device can cause material damage to the
connected devices or the equipment!
External mechanical stresses and vibrations must not be transmitted to the
device.
The device may be connected with a flexible laboratory hose only (e.g., a metal
hose).

Safety
14 Operating Manual MXPC 303 Z/603 T
2.4.4 Temperatures
CAUTION
Hot surface: Do not touch, risk of injury!
High temperatures at the motor housing and surrounding areas (Fig. 2-1) during
operation. Can cause burns, do not touch.
If operating the main switch Fig. 5-2/2), avoid touching hot surfaces.
The operator must ensure safe operation and take precautions to protect the
user, where necessary (see chapter 2.3 Safety precautions).
MEDIA/OPERATING TEMPERATURE
It is prohibited to exceed the permissible media temperature!
Beware of the values for permissible operation (see chapter 3.2 Characteristic
values).
There must be sufficient ventilation around the device (see chapter 5.2 Setting
up).
NOTE The device heats up due to the motor and the temperature of the medium, as well as
compression.
The device is equipped with a thermal circuit breaker that switches off the device in the
event of overheating (see chapter 4.2.4 Motor thermal protection)
Fig. 2-1. 117047: Hot area on the device (left), rear view warning label (right)
Fig. 2-2. 117057: Hot area on the device (left), rear view warning label (right)

Safety
Operating Manual MXPC 303 Z/603 T 15
Equipment
CAUTION
Cold surfaces: do not touch, risk of injury!
If an extremely cold coolant is used, surfaces such as those on the emission
condenser, can reach dangerously low temperatures and lead to frostbite.
The operator must ensure safe operation and take precautions to protect the
user, where necessary (see chapter 2.3 Safety precautions).
2.4.5 Vacuum
CAUTION
Risk of injury due to explosion!
The vacuum equipment can explode due to a rise in pressure after a sudden
intake of air. The splinters can seriously injure the user.
Check the pressure of the vacuum pump before disconnecting the pneumatic
connections.
NOTE The vacuum equipment can be under vacuum even when it is switched off.
GLASSWARE
Glassware is particularly high risk.
Make sure that glassware is shatter-proof and unbreakable!
Glassware must be suitable for the intended application.

Technical data
16 Operating Manual MXPC 303 Z/603 T
3 Technical data
3.1 Dimensions
MXPC 303 Z - 117047
Fig. 3-1. Front view of device
Fig. 3-2. Left view of device
MXPC 603 T - 117057
Fig. 3-3. Front view of device
Fig. 3-4. Left view of device
Parameters
Data
Article number
117047
117057
Width (a)
250 mm
280 mm
Depth (b)
350 mm
350 mm
Height (c)
440 mm
500 mm

Technical data
Operating Manual MXPC 303 Z/603 T 17
3.2 Characteristic values
3.2.1 Pumping speed
Pumping speed –S[m3/h]
Suction pressure –p[mbar]
Fig. 3-5. Pumping speed characteristics S(p)
3.2.2 Parameters
Parameters
Unit
Data
Article number
-
117047
117057
Designation
-
MXPC 303 Z
MXPC 603 T
Pumping speed ISO 21360-1* (50/60 Hz)
m3/h
2.0 / 2.2
4.0 / 4.4
Ultimate pressure (base pressure) ISO 21360-1*
with gas ballast
mbar
≤ 5
≤ 8
≤ 1.5
≤ 3.0
Max. inlet/exhaust pressure
mbar
1100
Degree of protection according to EN 60529
-
IP40
Sound pressure level EN ISO 2151
db (A)
≤ 44
≤ 40
Weight (net / gross)
kg
14.7 / 18.5
25.4 / 28.9
Rated voltage
V
230
Rated frequency
Hz
50 / 60
Rated current
A
1.6
3.1
Operating temperature range
°C
+ 10 to + 40
Max. media temperature
°C
+ 40
Max. insertion height
m
MSL
2000
Storage humidity
RH
< 90%
Coolant flow
l/min
> 5
Max. coolant temperature
°C
+ 12
NOTE * Technical data correspond to the basic units.

Technical data
18 Operating Manual MXPC 303 Z/603 T
3.3 General Connections
Type of connection
Version
Use for
Pneumatic
Inlet (suction)
Output (pressure side)
Hose nozzle DN 8-10
Hose nozzle GL 18
Hose ID = 8-10 mm
Hose ID = 8-10 mm
Accompanying parts (optional)
Inlet (suction)
Hose nozzle DN 8-10
Compression fitting DN 10
Hose ID = 8-10 mm
Tube 10/8 mm (AD/ID)
Equipment
Cooler input/output
Hose nozzle GL 14
Hose ID = 8 mm
Mains connection
IEC 60320 C14
IEC 60320 C13
3.4 Materials
ATTENTION
The operator must ensure that the application with the installed materials is not
critical
Beware of the safety/warning instructions (see chapter
2.4.1Hazardous substances)!
Components in contact with media
Components
Material
Pumping unit
Pump heads
Diaphragm
Valves
Seals
PTFE
PTFE coating on elastomer
PEEK
EPDM
Pneumatic connections
Vacuum hoses
Screw fittings
O-ring seals
PTFE
PVDF
EPDM
Attachment parts
Separator/emission condenser
Connector for hose
Connection block incl. hose fitting
Glass (shatter proof)
PTFE
PVDF

Description
Operating Manual MXPC 303 Z/603 T 19
4 Description
4.1 Scope of application
General description
The device is suitable for conveying neutral gaseous media.
The device is suitable for use in laboratories and industry when working in rough vacuum
conditions.
Gases enter the device, they are compressed, and finally expelled via the vacuum
diaphragm pump.
The glassware separates condensate media.
The device must be connected in accordance with the legal requirements and operated in
compliance with the technical data.
4.2 Structure
The device consists of a vertically mounted vacuum diaphragm pump (pump for short) and
glassware.
The vacuum diaphragm pump consists of a pumping unit with two or four pump heads, a drive
with a 1-phase electric motor and mechanical elements.
4.2.1 Device display
Fig. 4-1. 117047: view front (left) and back (right)
Fig. 4-2. 117057: view front
NOTE Display with accompanying material at the inlet (see chapter 3.3 General Connections).

Description
20 Operating Manual MXPC 303 Z/603 T
Position
Description
1
Carrying handle
2
Inlet (pneum.) suction port
3
Exhaust vapour condenser
4
Fork clamp
5
Pressure side separator
6
Suction side separator
7
Pumping unit
8
Mains connection/ On/Off switch (see Fig. 5-2)
9
Cooling water condenser outlet
10
Cooling water condenser inlet
11
Exhaust pressure connector
4.2.2 Pneumatic inlet
Fig. 4-3. Pneumatic inlet detail view (suction side)
NOTE Display with accompanying material at the inlet (see chapter 3.3 General Connections).
Position
Description
2a
Inlet (pneum.) suction port, 1st application
2b
Optional port for:
2nd application (see chapter 4.4.1 Accompanying material)
Pressure gauge (see chapter 4.4.2 Optional fittings)
2c
Control valve
The device is supplied as standard with a hose nozzle at the suction port (2a) and an optional
connection (2b) is closed with a blind plug. A second application can be connected to the
optional port using the accompanying material. Alternatively, a pressure gauge can be installed.
The inlet pressure can be regulated with the control valve (2c).
NOTE Ambient air is sucked into the chamber via the control valve.