Schmalz STF Series Manual

www.schmalz.com
Innovative Vacuum for Automation
EN
Operating and Maintenance Instructions
Dust filter STF… / STF-D…
30.30.01.00059/03 | 04.2018

www.schmalz.com
Note
These operating instructions were originally written in German and have been translated into English.
Store in a safe place for future reference.
Subject to technical changes without notice. No responsibility is taken for printing or other types of
errors.
Published by
© J. Schmalz GmbH, 04.2018
This document is protected by copyright. J. Schmalz GmbH retains the rights established thereby.
Reproduction of the contents, in full or in part, is only permitted within the limits of the legal provisions
of copyright law. Any modifications to or abridgments of the document are prohibited without explicit
written agreement from J. Schmalz GmbH.
Contact
J. Schmalz GmbH
Johannes-Schmalz-Str. 1
72293 Glatten, Germany
Tel. [phone]
Fax [phone]
[e-mail]
www.schmalz.com
Contact information for Schmalz companies and trade partners worldwide can be found at
www.schmalz.com/salesnetwork

Contents
Dust filter STF… / STF-D…
www.schmalz.com
1Safety instructions...............................................................................................4
1.1 Classification of safety instructions ...................................................................................4
1.2 Warnings ...........................................................................................................................5
1.3 Mandatory symbols ...........................................................................................................5
1.4 Regulations in these instructions.......................................................................................5
1.5 General safety instructions................................................................................................6
1.6 Intended use......................................................................................................................6
1.7 Requirements for installation and maintenance personnel...............................................6
1.8 Installation location requirements......................................................................................7
2Product description .............................................................................................8
2.1 Versions.............................................................................................................................8
2.2 Technical data...................................................................................................................9
2.3 Dust filter with differential pressure monitor STF-D….......................................................9
3Installation.........................................................................................................10
3.1 Installation position..........................................................................................................10
3.2 Mounting..........................................................................................................................10
3.3 Connecting the differential pressure monitor ..................................................................11
3.3.1 Electrical connection .......................................................................................................12
3.3.2 Setting the differential pressure.......................................................................................12
4Maintenance......................................................................................................13
4.1 Removing and cleaning filter inserts ...............................................................................13
4.2 Install filter element .........................................................................................................14
4.3 Spare and wearing parts .................................................................................................14
5Decommissioning and disposal.........................................................................16

SAFETY INSTRUCTIONS
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1 Safety instructions
1.1 Classification of safety instructions
Danger
This warning informs the user of a risk that will result in death or serious injury if it is not avoided.
DANGER
Type and source of danger
Consequence
►
Remedial action
Warning
This warning informs the user of a risk that could result in death or serious injury if it is not avoided.
WARNING
Type and source of danger
Consequence
►
Remedial action
Caution
This warning informs the user of a risk that could result in injury if it is not avoided.
CAUTION
Type and source of danger
Consequence
►
Remedial action
Attention
This warning informs the user of a risk that could result in damage to property if it is not avoided.
ATTENTION
Type and source of danger
Consequence
►
Remedial action
Important information for efficient and trouble-free use.

SAFETY INSTRUCTIONS
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1.2 Warnings
Explanation of the warning symbols used in the operating instructions.
Warning
symbol
Description
Warning
symbol
Description
General warning symbol
Flying debris
Electrical voltage
Floating dust particles
1.3 Mandatory symbols
Explanation of the mandatory symbols used in the operating instructions.
Mandatory
symbols
Description
Mandatory
symbols
Description
Wear a mask
Wear eye protection
Activate prior to maintenance or repair
1.4 Regulations in these instructions
These operating and maintenance instructions are valid for Schmalz dust filters from the STF series
with or without differential pressure monitors.
Designs:
Small design
Large design
The operating and maintenance instructions are an integral part of the dust filter and must be available
to the staff at all times for installation, maintenance and repair work.
These operating and maintenance instructions are specific to the items included in delivery from
Schmalz. They do not take into account any modifications to the dust filter made by the customer,
which are strictly prohibited.

SAFETY INSTRUCTIONS
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The dust filter may only be connected and operations started once the operating instructions have
been read and understood.
1.5 General safety instructions
You must adhere to the legal regulations and safety regulations applicable at the location of use.
WARNING
Ignoring the general safety guidelines
Personal injury/damage to plants or systems
►
The dust filter must be operated only in its original condition as delivered. The
manufacturer assumes no liability for consequences of modifications over
which it has no control, in particular, replacement of original parts with parts
from other sources.
1.6 Intended use
The dust filter is designed for cleaning the intake air in vacuum applications. This dust filter is intended
solely for filtering mechanical components in air.
Before using for other applications, consult the manufacturer.
DANGER
Use in potentially explosive atmospheres
Risk of accidents due to explosion
►
The dust filter must not be used in areas exposed to explosion hazards.
WARNING
Transporting or sucking through liquids or bulk material
Personal injury and/or damage to property
►
This dust filter is intended solely for filtering mechanical components in air. This
device must not be used to filter other media (e.g. bulk materials or liquids).
Before installation, maintenance and repair work, the operating instructions of the entire system and
any switch-off procedures must be observed.
1.7 Requirements for installation and maintenance personnel
The dust filter must be installed and maintained only by qualified specialist electricians and
mechanics.
“A qualified employee is defined as an employee who has received technical training and has the
knowledge and experience –including knowledge of applicable regulations –necessary to enable him
or her to recognize possible dangers and implement the appropriate safety measures while performing
tasks. Qualified personnel must observe the pertinent industry-specific rules and regulations.”

SAFETY INSTRUCTIONS
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1.8 Installation location requirements
Operating temperature:
oWith differential pressure monitor: 0° C and +40° C
oWithout differential pressure monitor -40° C and +80° C
Make sure that no water can enter the dust filter
Ensure that no warm air can be drawn in
Ensure that the dust filter remains easily accessible (maintenance, cleaning and replacement
of the filter insert)

PRODUCT DESCRIPTION
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2 Product description
2.1 Versions
Small design:
Item
Designation
1
Air inlet connection (suction cup)
2
Air outlet connection (vacuum generator)
3
Housing cover
4
Filter housing with threaded connection
5
Quick-release fastener
6
Mounting bracket
Large design:
STF…P
STF-D…P
with differential pressure monitor
Item
Designation
1
Air inlet connection (suction cup)
2
Air outlet connection (vacuum generator)
3
Upper housing section
4
Lower housing section (dust collecting pan)
3
6
2
5
1
4

PRODUCT DESCRIPTION
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Item
Designation
5
Filter insert
6
Bracket with locking clip
7
Clamp
8
Differential pressure monitor, adjustable
2.2 Technical data
Max. vacuum: -950 mbar
Overpressure is not permissible.
2.3 Dust filter with differential pressure monitor STF-D…
The differential pressure between the dirty air and clean air sides of the dust filter can be continuously
monitored using the differential pressure monitor (8.2). The differential pressure increases as the
degree of filter contamination increases.
The differential pressure can be set to between 10 and 50 mbar using a hand wheel located on the
differential pressure monitor. If the set differential pressure is exceeded, the differential pressure
monitor switches on.
Version without indicator light:
The output signal (normally open or normally closed) can be forwarded for signal processing by the
customer. This signal disappears again as the differential pressure decreases, i.e. after cleaning or
replacement of the filter insert.
Version with indicator light:
The differential pressure monitor activates the indicator light when the pressure loss across the dust
filter exceeds the set limit. The indicator light switches off again when the pressure loss falls below the
limit value (e.g. after cleaning or replacement of the filter insert).
Technical data for differential pressure monitor:
Adjustable differential pressure
10…50 mbar
Accuracy
10%
Differential gap
5 mbar
Maximum operating overpressure
100 mbar
Electrical switching capacity
250V AC / 6 A
24V DC / 1 A
Electrical connection
AMP flat plug 6.3 mm x 0.8 mm, in accordance with
DIN 46244
Certification
VDE 0630

INSTALLATION
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3 Installation
Use only the connections, mounting holes and attachment materials that have been provided.
DANGER
Vacuum in the system
Risk of injuries
►
Switch off vacuum generators (such as blowers or pumps) before installation.
3.1 Installation position
Dust filters can be installed vertically or horizontally. If they are installed vertically, the air inlet must be
at the top.
Small design:
Large design:
Incorrect installation voids the warranty for the dust filter and vacuum generator.
3.2 Mounting
Small design:
1. Secure the mounting bracket with 2 screws near the vacuum generator.
2. Secure the dust filter to the mounting bracket in one of the permitted installation positions.
3. Connect the vacuum hoses with the supplied hose clamps.

INSTALLATION
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Large design:
1. Secure bracket (6) with 2 screws near the vacuum generator.
2. Place the dust filter in the bracket (6) and turn or slide in to the desired installation position.
3. Close and lock the locking clip.
4. When mounting the unit horizontally, make sure that the "Oben/Top" marking is at the top
(+/-15° deviation permitted). If necessary, remove the lower housing section and refit it
when turned.
5. Connect the vacuum hoses with the supplied hose clamps.
3.3 Connecting the differential pressure monitor
DANGER
Electric shock
Fatal injury
►
Disconnect the system from the power supply before connecting or setting the
differential pressure monitor.
►
Before start of operations, make sure that the electrical connections of the
differential pressure monitor are covered with the protective cap (8.6).
Item
Designation
8.1
Dust filter STF-D...
8.2
Differential pressure monitor
8.3
Plug-in screw union STV 1/8"-6/4
8.4
Hose
8.5
Hose
8.6
Protective cap
8.2
8.1
8.4
8.5
8.3
8.6

INSTALLATION
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3.3.1 Electrical connection
1. Guide the cable with a sheath diameter of 7 mm through the protective cap.
2. Connect cable strands with female push-on connectors according to the diagram.
3. Secure supply line (see technical data chapter 2.3).
3.3.2 Setting the differential pressure
For systems with short supply hoses or special grippers, the indicator light may briefly
turn red when the load is released. Possibly increase the limit value of the differential
pressure monitor by 5 to 10 mbar.
1. Make sure that the differential
pressure monitor is not energized.
2. Remove the protective cap (8.6).
3. Adjust differential pressure on
adjusting knob (8.7).
The scale (8.8) allows only rough
adjustment. For more accurate results, use
a meter.
4. Tighten the cable screw union (8.9).
5. Put the protective cap (8.6) back in
place and screw tight.
IMPORTANT!
The adjustment screws for fine tuning (A
and B) are set at the factory and must not
be adjusted.
8.8
8.6
8.7
8.6
8.9

MAINTENANCE
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4 Maintenance
DANGER
Vacuum in the system
Risk of injuries
►
Switch off vacuum generators (such as blowers or pumps) before cleaning,
maintenance and repair work.
Component
Task
Maintenance period
Filter insert
Clean and check for damage
According to the operating
instructions of the entire system.
Adjust the maintenance interval to
the ambient conditions.
Replace
Small design:
Yearly
Large design:
At least once after 5 cleanings or
at least once every 2 years
Vacuum hose
Check for damage and leaks
Monthly or after repairs have been
conducted
Plastic housing and bracket
Check for damage and tears
When performing filter maintenance
Differential pressure monitor
(if present)
Check function, hoses and cable
connections
Yearly
4.1 Removing and cleaning filter inserts
WARNING
Swirling dust particles
Damage to eyes and respiratory tract
►
Wear eye protection
►
Wear respiratory protection
Small design:
1. Open all quick-release fasteners (5).
2. Remove the housing cover (3).
3. Remove the filter insert.
4. Blow the filter insert, never wash or brush
it.
3
6
2
5
1
4

MAINTENANCE
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Large design:
1. Open all clamps (7).
2. Remove the filter insert (5).
3. Blow the filter insert, never wash or brush
it.
Important!
Make sure that no dust can get into the inside of the filter insert during blowing.
Note:
To blow out the unit, set a pipe on a compressed-air gun that is bent at the end by
approx. 90°. The pipe must be long enough to reach the bottom of the cartridge. Filter
inserts must be blown from the inside out using dry compressed air (max. 5 bar) until
there are no more dust formations.
4.2 Install filter element
1. Before installation, make sure that the paper bellows and the rubber seals of the filter insert
are not damaged. Replace the filter insert if necessary.
2. Install filter insert.
3. Close the housing.
4.3 Spare and wearing parts
Small design:
Designation
Use
Part no.
Legend
Filter insert FILT-EINS 3 65x70 PAP STF-
3/4-IG
STF 3-4
10.07.01.00017
W
Filter insert FILT-EINS 3 98x70 PAP STF-
1-1/4-IGN
STF 1-1-4N
10.07.01.00018
W
Filter insert FILT-EINS 128x125 PAP STF-
1-1/4-IGH
STF 1-1-4H
10.07.01.00019
W
Filter insert FILT-EINS 3 150x222 PAP
STF-2-1/2-IG
STF 2-1-2
10.07.01.00020
W

MAINTENANCE
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Large design:
Designation
Use
Part no.
Legend
Filter insert Jumbo
Tube lifter Jumbo
11.04.03.10086
W
Filter insert 4.5
STF … 4.5 …
10.07.01.00060
W
Filter insert 6.0
STF … 6.0 …
10.07.01.00054
W
Filter insert 8.0
STF … 8.0 …
10.07.01.00079
W
Filter insert 24.0
STF … 24.0 …
10.07.01.00083
W
Hose clamp SSD60
STF … 4.5 … / STF … 6.0 …
10.07.10.00017
S
Hose clamp SSD76
STF … 8.0 …
10.07.10.00037
S
Hose clamp SSD125
STF … 24.0 …
10.07.10.00052
S
Differential pressure monitor
STF-D … F
21.01.06.00011
S
S= Spare part, W= Wearing part

DECOMMISSIONING AND DISPOSAL
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5 Decommissioning and disposal
DANGER
Electric shock / vacuum
Fatal injury
►
Before disassembling, make sure that the system is free of pressure and
voltage.
ATTENTION
Incorrect disposal of the dust filter
Environmental damage
►
Dust filters and filter inserts must be disposed of in accordance with national
regulations.

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J. Schmalz GmbH
Johannes-Schmalz-Str. 1
72293 Glatten, Germany
Phone [phone]
Fax [phone]
[e-mail]
www.schmalz.com
30.30.01.00059/03 | 04.2018