KNF N936 User manual

N936
TRANSLATION OF ORIGINAL OPERATING AND
INSTALLATION INSTRUCTION
ENGLISH
KNF 320276-320275 09/23 EN-US
OEM
Notice!
Before operating the pump and accessories, read and observe the operating and installation instructions as
well as the safety information!
DIAPHRAGM PUMP

Index
1 About this document .........................................................3
1.1 Using the operating and installation instructions.......3
1.2 Exclusion of liability...................................................3
1.3 Symbols and markings..............................................3
2 Safety ................................................................................5
2.1 Personnel and target group ......................................5
2.2 Responsibility of the operator ...................................5
2.3 Working in a safety conscious manner .....................6
2.4 Operating conditions .................................................6
2.5 Media ........................................................................6
2.6 Use............................................................................7
2.7 Directives and standards ..........................................7
2.8 Customer service and repair.....................................8
2.9 Disposal ....................................................................9
3 Technical data.................................................................10
Technical data.........................................................10
4 Product description .........................................................12
5 Transport.........................................................................14
General ...................................................................14
6 Installation and connection..............................................15
6.1 Installing the pump..................................................15
6.2 Electrical connection ...............................................18
6.3 Pneumatic connection.............................................19
7 Operation ........................................................................20
7.1 General ...................................................................20
7.2 Information on switching the pump on and off ........22
8 Servicing .........................................................................23
8.1 Servicing schedule..................................................23
8.2 Cleaning..................................................................23
8.3 Replacing diaphragm, valves and O-rings ..............24
9 Spare parts and accessories...........................................27
9.1 Spare parts .............................................................27
9.2 Accessories.............................................................27
10 Troubleshooting ..............................................................28
11 Returns............................................................................31
KNF Neuberger GmbH
Alter Weg 3
79112 Freiburg
Germany
Tel. [phone]
Fax. [phone]
www.knf.com

Diaphragm Pump N936 About this document
Translation of Original operating and installation instruction, English, KNF 320276-320275 09/23 3
1 About this document
1.1 Using the operating and installation instructions
The operating and installation instructions are part of the pump.
àIn the event of uncertainties with regard to the content of the operating
and installation instructions, please contact the manufacturer (contact
data: see www.knf.com). Please have the type and serial number of
the pump ready.
àRead the operating and installation instructions before you commission
the pump.
àGive the operating and installation instructions only completely and un-
changed to the next owner.
àKeep the operating and installation instructions within reach at all
times.
Project pumps For customer-specific project pumps (pump models that begin with "PJ" or
"PM"), there may be deviations from these operating and installation in-
structions.
àFor project pumps, also observe the agreed specifications.
Optional contents Project-specific options may be included in the operating and assembly in-
structions. These are marked with "Optional". It is also possible that
project-specific deviations are not included in the operating and assembly
instructions.
1.2 Exclusion of liability
The manufacturer assumes no liability for damages and malfunctions re-
sulting from failure to observe the operating and installation instructions.
The manufacturer assumes no liability for damages and malfunctions re-
sulting from changes or modifications to the device and improper handling.
The manufacturer assumes no liability for damages and malfunctions re-
sulting from impermissible spare parts and accessories.
1.3 Symbols and markings
Warning notice
WARNING
A notice that warns you of danger is located here.
Possible consequences of a failure to observe the
warning notice are specified here. The signal
word, e.g., Warning, indicates the danger level.
àMeasures for avoiding the danger and its
consequences are specified here.

About this document Diaphragm Pump N936
4 Translation of Original operating and installation instruction, English, KNF 320276-320275 09/23
Danger levels
Signal word Meaning Consequences if not
observed
DANGER warns of immediate
danger
Death or serious injury
or serious damage will
result.
WARNING warns of possible dan-
ger
Death, serious injury or
serious damage is pos-
sible.
CAUTION warns of a possibly
dangerous situation
Minor injury or damage
is possible.
NOTICE Warns of possible dam-
age
Damage is possible.
Tab.1 Danger levels
Other notices and symbols
àAn activity to be carried out is specified here (a step).
1. The first step of an activity to be carried out is specified here.
Other sequentially numbered steps follow.
This symbol indicates important information.
Explanation of pictograms
Pictogram Meaning
General warning symbol
Warning of hot surface
Warning of electrical voltage
Warning of poisonous substances
Warning of hand injuries through crushing
Observe the operating instructions
General mandatory sign
Tab.2 Explanation of pictograms

Diaphragm Pump N936 Safety
Translation of Original operating and installation instruction, English, KNF 320276-320275 09/23 5
2 Safety
Observe the safety notices in Chapters 6 Installation and connec-
tion and 7 Operation.
2.1 Personnel and target group
Personnel Make sure that only specially trained and instructed personnel work on the
pumps. This applies, in particular, to mounting, connection and servicing
work.
Make sure that the personnel have read and understood the operating in-
structions, particularly the chapter on safety.
Target group Target group Definition
User Employee
Specialized personnel Specialized personnel are personnel
who
- have relevant professional training
in the field covered in the particular
section of text;
- have current knowledge of the field
covered in the particular section of
text.
Tab.3 Target group
Who-does-what matrix Lifecycle phase User Specialized personnel
Transport X
Mounting X
Connection X
Commissioning X X
Operation X X
Servicing X
Troubleshooting X
Disposal X
Tab.4 Who-does-what matrix
2.2 Responsibility of the operator
The pumps are produced in accordance with the generally recognized
rules of engineering, as well as the occupational health, safety and acci-
dent prevention regulations. Nevertheless, dangers can arise during their
use that lead to injuries to the user or third parties or to damage to the
pump or other property.
Only use the pumps in perfect technical condition, for their intended use,
safely and with an awareness of the dangers and in observation of the op-
erating and installation instructions.
The components that are to be connected to the pumps must be designed
according to the pneumatic data of the pumps.
When connecting the pumps to the electrical power, observe the corre-
sponding safety rules.
Make sure that no hazardous situation, physical harm or impairment of the
pump can occur.
Operating
parameters
Only operate and install the pump under the operating parameters and op-
erating conditions described in Chapters 2.4 Operating conditions and 3
Technical data.