NetterVibration NWE Series User manual

Operating instructions for
pneumatic maintenance units
Feb. 2023
No. 2123E
Page 1/23
These operating instructions apply to:
Maintenance Unit
Filter Regulator Unit
Lubricator Unit
series NWE
series NFR
series NOE
NWE 1/4" and 1/2"
NWE 1"
NFR
NOE

2
Contents
1General information 3
2Safety 5
3Technical data 6
4Design and function 10
5Transport and storage 11
6Installation 12
7Start-up and operation 14
8Maintenance and servicing 16
9Troubleshooting 18
10 Spare parts and accessories 19
11 Disposal 20
12 Annex 21
Please refer to the delivery note for the scope of delivery.
Check the packaging for possible transport damage. In the event of
damage to the packaging, check the contents for completeness and
possible damage. Inform the carrier in the case of damage.
The maintenance units NWE/NFR/NOE are hereafter referred to as
"maintenance units".
Document no.
2123E
Version no.
1
Date of issue
Feb. 2023
Scope of
delivery
Designation
Version of
document

General information
3
1 General information
Before installing the maintenance units read these instructions carefully. It
is the basis for any action when dealing with the maintenance units, and
may be used for training purposes. The instructions should be subse-
quently stored at the operation site.
The target group for these instructions is technical staff, who have basic
knowledge in pneumatics and mechanics.
Only complying technical staff may work on the maintenance units.
The maintenance units may only be installed, put into operation, main-
tained, troubleshot and disassembled by persons authorised by the opera-
tor.
This documentation is protected by copyright.
Netter Vibration reserves all rights such as translations, reprinting and re-
production of the instructions, as well as parts thereof.
All technical information, data and instructions for installation, operation
and maintenance in these instructions are based on the latest information
available at the time of printing and take our past experience to the best of
our knowledge into account.
No claims can be derived from the information, illustrations and descrip-
tions in these operating instructions.
The manufacturer does not assume liability for damages resulting from:
failure to observe the instructions,
improper use,
unauthorised repairs,
technical modifications,
use of non-permissible spare parts.
Translations are made to the best of our knowledge.
Netter Vibration does not assume liability for translation errors, even if the
translation was made by us or on our behalf. Only the original German text
remains binding.
The observed directives can be found in the manufacturer's declaration in
the appendix.
The maintenance units are built exclusively for Netter Vibration by:
Knocks Fluid-Technik GmbH, Otto-Hahn Straße 4, DE 59379 Selm-Bork.
Observe the information in the manufacturer's declaration in the appendix.
For use in potentially explosive atmospheres, also observe the "Statement
for an apparatus not containing an own potential ignition source" in the
aapendix.
Use and
storage
Target group
Copyright
Limitation of
liability
Directives
observed
Manufacturer
declaration

General information
4
The following instruction and warning symbols are used in these instruc-
tions:
WARNING
indicates a potential danger.
Disregard of this notice can result in death or severe per-
sonal injuries.
CAUTION
indicates a potentially dangerous situation.
Disregard of this notice can result in minor or moderate per-
sonal injuries.
NOTICE
indicates potential material damage.
Disregard of this notice can result in material damage.
IMPORTANT
indicates actions, methods or notes that are not relative to safety, e.g. use-
ful information and tips.
Environmentally safe disposal
indicates the obligation of environmentally safe disposal.
Instruction
and warning
symbols
Personal
injuries
Material
damages
Notes

Safety
5
2 Safety The maintenance units are intended for maintenance of compressed air
systems in the industrial field. They may be operated in dusty and wet en-
vironments.
Any other use is considered improper.
Installation, commissioning, maintenance and troubleshooting of the
maintenance units may only be performed by authorised qualified person-
nel, who have basic knowledge in pneumatics and mechanics.
All handling of the maintenance units is the responsibility of the operator.
WARNING
Compressed air
A loosened hose which is under pressure can lead to personal injuries.
Opening the maintenance unit under pressure can result in damage to the
maintenance unit and serious injury.
Screw the hose lines on carefully.
Check the hose lines and connections after one hour of operation and
thereafter regularly (generally monthly).
Retighten the hose lines, if necessary.
Ensure that the compressed air is disconnected from the supply lines
during all work on the maintenance units.
Prevent the maintenance units from being switched back on during all
work.
WARNING
Damage to health due to oil mist
Oil mist is generated in the lubricator unit. Escaping oil mist can be harmful
to health.
The operator must ensure that people do not come into contact with or
breathe in escaping oil mist.
Suitable measures, such as the discharge of the oil-containing exhaust
air or the installation of a suitable suction system, must be implement-
ed.
The operator must warn of the dangers of escaping oil mist.
NOTICE
Solvents and aggressive cleaning agents damage the maintenance units.
For cleaning, use only a slightly damp cloth with water and, if necessary, a
mild cleaning agent without chemical additives.
Intended use
Qualification
of qualified
personnel
Compressed
air
Oil mist
Cleaning
agents

Technical data
6
3 Technical data
Parameter
Description
Operating medium
Compressed air
Operating pressure
0,5 bar to 10 bar
Inlet pressure
Max. 10 bar
Permissible ambient tem-
perature
-10° C to +50° C
Technical data NWE
Type
Nominal size/
Connection
thread (P)
Pressure
range
[bar]
Max. inlet
pressure
[bar]
Flow rate
[l/min]
Weight
[kg]
Filter
[µm]
NWE 1/4
G 1/4
0,5 - 10
10
1,750
1.20
5
NWE 1/2
G 1/2
3,500
2.00
NWE 1
G 1
10,500
4.55
All NWE with mounting bracket.
Technical data NFR
Type
Nominal size/
Connection
thread (P)
Pressure
range
[bar]
Max. inlet
pressure
[bar]
Flow rate
[l/min]
Weight
[kg]
Filter
[µm]
NFR 1/4
G 1/4
0,5 - 10
10
1,750
0.90
5
NFR 1/2
G 1/2
3,500
1.47
NFR 1
G 1
11,000
2.53
All NFR with mounting bracket.
Technical data NOE
Type
Nominal size/
Connection
thread (P)
Pressure
range
[bar]
Max. inlet
pressure
[bar]
Flow rate
[l/min]
Weight
[kg]
NOE 1/4
G 1/4
0,5 - 10
10
1,750
0.72
NOE 1/2
G 1/2
3,500
1.20
NOE 1
G 1
18,000
2.03
All NOE with mounting bracket.
Permissible
operating
conditions

Technical data
7
Dimensions NWE [mm]
Type
A
B
C
D
E
F
G
H
I
K
L
M
N
NWE 1/4
226
137
114
96
108
95,4
6,4
5,4
128
113,0
50
49
24
NWE 1/2
257
163
144
110
120
104,0
8,0
6,4
155
136,5
36
49
41
NWE 1
382
214
164
128
83
38,0
16,0
8,4
124
82,0
20
62
19
NWE 1/4 and
NWE 1/2
NWE 1

Technical data
8
Dimensions NFR [mm]
Type
A
B
C
D
E
F
G
H
I
K
L
M
N
NFR 1/4
226
85
114
96
108
95,4
6,4
5,4
76
61
50
49
24
NFR 1/2
257
100
144
110
120
104,0
8,0
6,4
92
69
36
49
41
NFR 1
382
124
164
128
83
38,0
16,0
8,4
124
82
20
62
19
NFR 1/4 and NFR 1/2
NFR 1

Technical data
9
Dimensions NOE [mm]
Type
A
B
C
D
E
F
G
H
I
K
L
M
N
NOE 1/4
186
85
76
64
108
95,4
6,4
5,4
76
61
80
--
24
NOE 1/2
210
100
106
70
120
104,0
8,0
6,4
92
69
90
--
41
NOE 1
375
124
122
85
83
38,0
16,0
8,4
124
82
30
--
19
NOE 1/4 and NOE 1/2
NOE 1

Design and function
10
4 Design and function
Figure NWE 1/4" / 1/2"
1
Pressure regulator on the
filter regulator unit
2
Mounting bracket
3
Compressed air inlet
4
Release for condensate reservoir
5
Condensate reservoir with sight glass
6
Condensate drain screw
7
Pressure gauge
8
Oil reservoir nozzle
9
Oil reservoir with sight glass and
level marking
10
Release for oil reservoir
11
Oil filling button
12
Dosing screw
The maintenance units NWE are used for the preparation of compressed
air. They consist of the filter regulator unit NFR and the lubricator unit
NOE.
The incoming compressed air is filtered and condensate is separated. The
filter control valve regulates the supplied compressed air to the operating
pressure set on the pressure regulator and compensates any pressure
fluctuations.
The lubricator unit adds an oil mist to the filtered compressed air to lubri-
cate the pneumatic vibrators supplied with it. The oil quantity can be ad-
justed with the dosing screw.
Design
Function

Transport and storage
11
5 Transport and storage
Special conditions of transport are not required.
The maintenance units are packed and ready for assembly. Accessories
and add-on parts are delivered unmounted, unless otherwise agreed up-
on.
The packaging protects the maintenance units from transport damage.
The packaging material has been selected from an environmentally safe
and technically disposable point of view and is therefore recyclable.
The return of packaging to the material cycle conserves raw materials and
reduces the amount of waste.
Store the maintenance units in a dry and clean environment.
Protect the maintenance units from UV-exposures, weather and ozone.
The storage temperature is between -10 °C and +60 °C.
Close all openings before storing.
Transport
conditions
Packaging
Storage
conditions

Installation
12
6 Installation
Observe the safety instructions in chap. Safety, starting on page 5.
Please note the information in chap. Technical data, from page 6 onwards.
Use shut-off valves to depressurise the maintenance units before installa-
tion and maintenance (e.g. filter change).
Flow direction 1/4" and 1/2"
The flow direction can be read from the "IN" and "OUT" indications on the
side panels and wall brackets.
Arrows on the front and back indicate the flow direction.
side view
back
front
wall bracket
Flow direction 1"
On the top, arrows indicate the flow direction.
Ensure that there is enough space underneath the maintenance units (at
least 130 mm) to change the filter.
Adjust the maintenance units vertically (± 5°).
Fastening of
the mainte-
nance unit

Installation
13
Installation into a pipeline
Turn the pipelines into the connecting flanges. The threads must be
sealed.
Installation of a pressure gauge
Turn the pressure gauge into the existing connection thread until the pres-
sure gauge seal is completely screwed in.
Check that the following steps have been carried out:
Compliance with permissible operating conditions ensured?
Correct flow direction observed?
maintenance units correctly and safely mounted?
Observe vertical installation position?
All hose connections correctly and securely mounted?
Checklist
installation

Start-up and operation
14
7 Start-up and operation
Observe the safety instructions in chap. Safety, from page 5 on.
Please refer to chap. Technical data, page 6 for permissible operating
conditions.
After installation, set the filter regulator unit as follows:
1. Pull the adjustment cap on the pressure regulator upwards (away from
the housing) to unlock it.
2. Twist the adjustment cap until the desired pressure is displayed on the
pressure gauge.
3. Press the adjustment cap down (towards the housing) to secure the
cap against unintentional twisting.
Lock pressure regulator:
1. Turn the handwheel on the adjustment cap to the left (anticlockwise),
which causes two securing lugs to extend.
2. Hang a suitable lock on these lugs to secure the pressure regulator
against unauthorised adjustment.
1. Depressurise the lubricator unit.
2. Slide the release downwards.
3. Turn the oil reservoir out anticlockwise.
4. Fill specified oil into the oil reservoir up to the marking.
5. Turn the oil container clockwise into the lubricator unit, until it audibly
snaps into place.
6. Check that all hose connections are correctly and securely fitted.
7. Open the pressure shut-off valve. The maintenance unit is under
pressure.
8. Set the smallest safely adjustable number of drops on the dosing
screw (reference value 1 - 2 drops/min), while flowing through the lu-
bricator unit. The lubricator unit is not ready for operation until it has
been adjusted and is functioning properly.
For automatic filling, the lubricator unit must be under pressure.
1. Connect a suitable oil hose to the oil reservoir nozzle.
2. Immerse the oil hose in specified oil.
3. Press the oil filling button to fill the oil reservoir with oil up to the mark-
ing.
Permissible
operating
conditions
Set Filter
Regulator
Unit
Fill and adjust
lubricator unit
Fill lubricator
unit automati-
cally

Start-up and operation
15
Check that the following steps have been carried out:
All hose connections correctly and securely mounted?
Pressure regulator set?
Oil reservoir filled with oil up to the marking?
Correct oil quantity set with dosing screw?
Checklist
start-up

Maintenance and servicing
16
8 Maintenance and servicing
Observe the safety instructions in chap. Safety, starting on page 5.
The maintenance intervals depend on the respective operating conditions
and the purity of the operating medium.
Carry out the following maintenance operations at regular intervals:
Check the level of the condensate reservoir.
Drain condensate if necessary.
Change filter cartridge.
Check the oil level. Top up oil if necessary.
Clean the maintenance unit if necessary.
1. Check the condensate level at the sight glass. When the upper mark
(below the filter element) is reached, drain condensate as follows.
2. Place a drip tray under the condensate drain screw.
3. Open the condensate drain screw counterclockwise (as seen from
below).
4. Drain the condensate completely.
5. Close the condensate drain screw clockwise (as seen from below).
Figure NFR 1"
1
Filter end piece
2
Filter seat
3
Filter cartridge
4
Mounting position
5
Bottom part
6
Hexagon socket screws
Maintenance
operations
Check/drain
condensate
Change filter
cartridge

Maintenance and servicing
17
Change filter cartridge 1/4" and 1/2":
1. Depressurise the maintenance unit.
2. Slide the release of the condensate reservoir downwards.
3. Turn the reservoir out counterclockwise.
4. Twist off the filter end piece.
5. Remove the filter cartridge and the filter seat.
6. Insert the new filter cartridge with filter seat.
7. Screw in the filter end piece.
8. Turn the reservoir in clockwise until it audibly clicks into place.
Change filter cartridge 1":
1. Depressurise the maintenance unit.
2. Loosen the hexagon socket screws
3. Remove the screws and the bottom part.
4. Twist off the filter end piece.
5. Remove the filter cartridge and the filter seat.
6. Insert the new filter cartridge with filter seat.
7. Screw in the filter end piece.
8. Mount the bottom part with the hexagon socket screws. Note the cor-
rect mounting position.
Regularly check the oil level at the sight glass with level marking.
If necessary, top up with oil according to section "Fill and adjust lubricator
unit", page 14.
Clean the maintenance units if necessary. For cleaning, use only a slightly
damp cloth with water and, if necessary, a mild cleaning agent without
chemical additives.
Solvents and aggressive cleaning agents damage the maintenance units.
Check oil level
and top up oil
Cleaning

Troubleshooting
18
9 Troubleshooting
Any repairs to maintenance units operated in areas with potentially explo-
sive atmospheres (ATEX areas) are to be carried out exclusively by
Netter Vibration.
In the case of malfunctions of the maintenance units proceed as follows:
Disturbance
Possible cause
Corrective action
No pressure indication
Shut-off valve closed
Open shut-off valve.
Pressure not adjusted
Adjust the pressure on the pressure
regulator.
No compressed air
supply
Check and ensure the customer's
compressed air supply.
Pressure gauge defec-
tive
Replace pressure gauge.
Low flow rate
(when air is consumed,
the operating pressure
collapses)
Filter cartridge soiled
Replace filter cartridge.
Pressure increases
above the set operating
pressure
Valve disc defective at
the sealing seat in the
housing
Send the defective component, with
a description of the fault and the
operating conditions, to
Netter Vibration.
Audible blow-off at the
pressure regulator
Valve seat damaged
Audible blow-off at the
condensate drain screw
Drain screw leaking
Tighten or renew the drain screw.
Repairs in
ATEX areas
Malfunctions
and causes

Spare parts and accessories
19
10 Spare parts and accessories
Please provide the following details when ordering spare parts:
type of maintenance units
description and position of spare part
required amount
Ordering of
spare parts

Disposal
20
11 Disposal
All parts of the maintenance units must be properly disposed of
according to the material specifications. The valid disposal
prices of the maintenance units are available on request.
All parts of the maintenance units can be recycled. The maintenance units
consist of plastic and metal components.
The exact material specifications can be requested from the manufacturer.
Prices
Material
specifications