RINGSPANN HW 040 HFA User manual

Schaberweg 30-38
Telephone [phone]
Telefax [phone]
www.ringspann.com
[email protected]
61348 Bad Homburg
Germany
Installation and Operating Instructions for
Brake Calipers HW 040/063/100 HFA
E09.611e

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 2
IMPORTANT
Please read these instructions carefully before installing and operating the product. Your particular
attention is drawn to the notes on safety.
These installation and operating instructions are valid on condition that the product meets the
selection criteria for its proper use. Selection and design of the product is not the subject of these
installation and operating instructions.
Disregarding or misinterpreting this installation and operating instructions invalidates any product
liability or warranty by RINGSPANN; the same applies if the product is taken apart or changed.
These installation and operating instructions should be kept in a safe place and should accompany
the product if it is passed on to others –either on its own or as part of a machine –to make it
accessible to the user.
Safety Notice
•Installation and operation of this product should only be carried out by skilled personnel.
•Repairs may only be carried out by the manufacturer or accredited RINGSPANN agents.
•If a malfunction is indicated, the product or the machine into which it is installed, should be
stopped immediately and either RINGSPANN or an accredited RINGSPANN agent should be
informed.
•Switch off the power supply before commencing work on electrical components.
•Rotating machine elements must be protected by the purchaser to prevent accidental contact.
•Supplies abroad are subject to the safety laws prevailing in those countries.
This is a translation of the German original version!
In case of inconsistencies between the German and English version of this
installation and operating instruction, the German version shall prevail.

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 3
Contents
1. General notes
General safety instructions
Special safety instructions
2. Design and function/ parts list
Function
Markings
Drawings and Parts Lists
3. Intended use
4. Impermissible use
5. Condition as delivered
6. Handling and storage
7. Technical prerequisite for reliable operation
8. Installation the RINGSPANN brake
General instructions for assembly and installation
Assembly and installation
Setting/ adjusting the brake pad gap
Installing the threaded connection and bleeding the brake
Connecting the signal cable (optional for organic brake pads)
9. Start-up
10. Disassembling the brake
11. Maintenance
General maintenance
Permissible brake pad wear and replacement of the brake pads
Replacing seals, strippers and piston gaskets
12. Installing the inductive proximity switch (option)
Mounting and connection of inductive sensors for position monitoring

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 4
1. General notes
General safety instructions
Please read theses installation and operating instructions carefully before installing and operating
the brake. Please refer to the drawings in the various sections.
Safety must be given the highest priority during all work performed on the brake.
Switch off the drive unit before performing work on the brake.
Rotating components (e.g. brake disc) must be secured by the operator to prevent accidental
contact.
Special safety instructions
Life-threatening danger!
When assembling, operating and maintaining the brake it is to be ensured
that the entire drive train is secured against being switched on
unintentionally. Moving parts can cause severe injury. Rotating parts (e.g.
brake disc) must be secured by the operator against unintentional
touching.
2. Design and function/ parts list
Function
The brake calipers HW 040 HFA, HW 063 HFA and HW 100 HFA are machine components used
for the purpose of braking accelerated masses safely and reliably. The combination of brake
caliper and brake disc provides a complete brake unit capable of securing machines and
equipment system effectively. Thanks to its universal design, it can perform the following
functions:
•As a holding or parking brake, it prevents the unintended start of a stationary shaft.
•As a stopping brake, it brings a rotating shaft to a complete standstill.
•As a control brake, it maintains a particular tensile force within the material.
Braking force is generated by hydraulic pressure. The brake caliper is released by spring force.
Markings
These installation and operating instructions apply to:
•the standard brake caliper HW 040 HFA, HW 063 HFA and HW 100 HFA
•the standard version HW xx HFA; The „F“ in the designation “HFA” stands for "spring
released“.
•the version without spring released

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 5
•the different friction materials for friction pads and for friction pads with signal cable.
•the brake with proximity switch.
•for installation on a vertical brake discs in combination with horizontal shafts! For horizontal
disc we ask for consultation.
There is a type plate on the brake with a 16-digit part number. The exact design of the brake is
defined by this article number only.
As well as these instructions, please also consider the catalogue data for the brake at
www.RINGSPANN.com and the drawings in the individual sections.
Drawings and Parts Lists
Brake calliper HW 040 HFA
Fig. 2.1

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 6
Part
Nomenclature
Quantity
1
Brake housing
2
2
Piston
2
3
Set brake pad
1
4
Bushing
2
5
Bushing
2
6
Holding bracket
2
7
Piston gasket
2
8
Pressure spring
2
Brake calliper HW 063 HFA
Fig. 2.2
Part
Nomenclature
Quantity
9
Circlip
2
10
Shim
2
11
Grip ring G 6x1
6
12
Cylindrical pin 6x20-A-St
2
13
Clamping sleeve 4X16
DIN EN ISO 8752
2
14
Head screw (for holding
bracket)
2
15
Head screw
2
16
USIT-ring U4,5X7,0X1,0
2

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 7
Part
Nomenclature
Quantity
1
Brake housing
2
2
Piston
2
3
Set brake pad
1
4
Sleeve
2
5
Bushing
2
6
Holding bracket
2
7
Piston gasket
2
8
Pressure spring
2
Brake calliper HW 100 HFA
Fig. 2.3
Part
Nomenclature
Quantity
9
Circlip
2
10
Shim 25x35x1 DIN 988
2
11
Grip ring G 8x1
12
12
Cylindrical pin
2
13
Clamping sleeve
4
14
Head screw (for holding
bracket)
2
15
Head screw
2
16
USIT-ring
2

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 8
3. Intended use
The standard brake caliper may be used only in systems with a maximum hydraulic pressure of
90 bar and in accordance with the technical data. When using special brake calipers, please
refer to the associated technical drawing.
In the standard type HFA (with spring release) ventilate the brake pads down to a residual
pressure in the hydraulic < 0.3 bar. An automatic wear adjustment ensures constant piston
stroke.
The brake caliper is designed for use as a holding/parking brake, control brake and/or as stopping
brake.
Other uses are improper and incompatible with the specified purpose. RINGSPANN assumes no
liability for damages resulting from improper use. The risk is assumed by the user alone.
4. Impermissible use
Operating the brake caliper under higher pressure than that specified in the technical data or with
other media is prohibited. Unauthorized constructive modifications of the brake caliper are
similarly prohibited. RINGSPANN assumes no liability for damages resulting from improper use.
The risk is assumed by the user alone.
Part
Nomenclature
Quantity
1
Brake saddle housing
2
2
Piston
2
3
Set Brake pad
1
4
Sleeve
2
5
Bushing
2
6
Holding plate
4
7
Piston gasket
2
8
Pressure spring
2
9
Circlip
2
Part
Nomenclature
Quantity
10
Shimdisc 40X50X1
DIN 988
2
11
Grip ring G 16x1,5
12
12
Cylindrical pin
2
14
Head screw (for holding
bracket)
4
15
Head screw
2
16
USIT-ring
2
17
Spacer bushing
4
18
Spring washer
4

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 9
Attention!
The brake caliper may only be operated in the installed condition with brake pad
and brake disc!
5. Condition as delivered
The brake caliper is tested prior to delivery. Test pressure is 100 bar.
The delivered consignment consists of 2 brake caliper halves and 1 set of brake pads.
Sensors are supplied separately if ordered as an option.
6. Handling and storage
The weight of the caliper depending on the execution HW 040 approx. 5.5 kg, HW 063 approx.
8kg and HW 100 approx. 30 kg.
The brake is delivered with anti-corrosion protection and can be stored in an enclosed, dry space
for up to 12 months. It is important to prevent condensation from forming. Moist storage areas are
unsuitable. Brakes stored for longer than 12 months and after each transport, the brake must be
activated in installed condition at least once in order to prevent sticking of the seal.
7. Technical prerequisite for reliable operation
Mounting the brake to stable, low-vibration machine components ensures low-screech, low-noise
braking.
8. Installation the RINGSPANN brake
General instructions for assembly and installation
Before installing the brake caliper, the brake disc must be cleaned with alcohol, e.g. ethyl or
isopropyl alcohol or a water-based surfactant solution (soapy water, etc.) and then rubbed dry with
a clean cloth.
When cleaning the brake disc with a thinner, acetone or a brake cleaning agent, it is important to
ensure that neither these cleaners nor any cleaner residues come in contact with the brake pads.
This is especially important in the case of brakes used only as parking brakes, as no dynamic
braking operations take place during which thinner residues would be rubbed off the brake disc.
Caution!
Oil and rust-proofing-agent residues reduced friction coefficient and thus
diminish transmissible braking torque substantially!

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 10
Assembly and installation
Caution!
The brake caliper must not be exposed to hydraulic pressure during assembly/
installation.
Prior to installation, check to ensure that the mounting surface is even and concentric run
between the brake disc and the mounting surface is within the tolerance range of 0.3 mm.
Ensure that the parallel gap of 0.2 mm between the brake disc and the mounting surface is not
exceeded.
Check the axial movement of the brake disc. Axial movement must not exceed ± 0.3 mm.
Maximum permissible lateral brake disc wobble is 0.1 mm. Greater wobble may cause rattling
and shaking of the brake unit.
Fig 8.1
Caution!
Check to ensure that the brake disc rotates freely.

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 11
Securing the brake caliper to stable, low-vibration machine elements guarantees low-screech and
low-noise braking. The two halves of the standard brake caliper are attached with screws or
threaded bolts to the mounting plate or the machine components. The width of the mounting plate
between the two brake caliper halves should equal brake disc thickness plus 3 mm. The gap on
each side must measure exactly 1.5 mm in order to prevent additional axial pressure on the brake
disc shaft during braking operations.
Please use screws/bolts of quality grade 10.9 or 12.9 for the standard brake.
Type
Number of
Screw/Bolt
Tightening torques*
screws/bolts
size
grade 10.9
grade 12.9
HW 040 HFA
2
M 12
123 Nm
144 Nm
HW 063 HFA
2
M 16
302 Nm
354 Nm
HW 100 HFA
4
M 24
1017 Nm
1190 Nm
*) calculated with µK= µG= 0.12 as the average coefficient of friction in the thread bores
(from VDI Guidelines 2230, version 2001).
Setting/ adjusting the brake pad gap
The setting of the distance of the brake pads takes place after the mounting of the brake caliper
automatically. The gap between the brake pads and the brake disc should always be approx.1,5
mm on each side. During installation, ensure that the brake pads are centred and in full contact
with the surface of the brake disc.
Installing the threaded connection and bleeding the brake
Hydraulic hoses should be used as hydraulic fluid lines. The connection of the pressure oil lines
to the brake caliper halves must be symmetrical to ensure that both brake pistons extend
simultaneously.
Caution!
The hydraulic actuation of the brake caliper must be carried out in such a way
that both caliper halves are actuated simultaneously with the same pressure.
Delayed actuation between the caliper halves can lead to brake malfunctions or
to impermissible shocks and vibrations in the system.
Caution!
During installation, ensure that the brake pads are centred and in full contact
with the surface of the brake disc. The gap between the brake pads and the
brake disc should always be approx. 1.5 mm on each side. Please observe
maximum the wear limit.

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 12
The connection is connected to one of the two pressure oil connections. The other bore is used
as a vent bore and must be sealed with a metal screw plug.
The hydraulic system must be bled during initial installation, when seals are changed or other
work is performed on the hydraulic system. If the hydraulic fluid circulation system is configured,
the hydraulic system can be bled alternatively by circulating the hydraulic fluid.
Caution!
Oil expelled from the system must be removed completely. Leaks must be
repaired immediately.
Connection threading: HW 040 HFA = G 1/4“
HW 063 HFA = G 1/4“
HW 100 HFA = G 3/8“
Hydraulic fluid: Alloyed mineral oil equivalent to Group HLP (DIN 51525 or API
classification SC, SD or SE.
Hydraulic fluid quantities: HW 040 HFA: max. 20 cm3
HW 063 HFA: max. 20 cm3
HW 100 HFA: max. 292 cm3
Check to ensure that screws and other connections are tight:
•brake caliper to machine component
Check the following for absence of leaks:
•bolt connections and other connections
Caution!
The hydraulic system must never be operated at a higher pressure than the
approved. The maximum operating pressure standard brake is 90 bar.
Information!
The purer the hydraulic fluid, the longer the service life of the brake system.
des Freilaufs führen!

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 13
Caution!
It is important to ensure that the brake pads do not rub against the brake disc
when the brake caliper is open.
Connecting the signal cable (optional for organic brake pads)
Connect the signal cable via a signal lamp to a 24V power source. If the maximum permissible
brake pad wear limit is reached, contact to the neutral conductor is effected and the signal light
goes on. As an option, RINGSPANN offers a wear indicator as friction pad wear monitoring for
the brakes, which signals when the friction pad wear limit is reached. The indicator lamp in the
wear indicator shows that the friction blocks need to be changed. In addition, the output relay can
be used to trigger a signal in the machine control system.
Fig. 8.2

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 14
9. Start-up
The entire surface of both brake pads must be in contact with the brake disc in order to achieve
the optimum braking effect. The brake pads must also be heated briefly to approx. 200°C.
Therefore, multiple brief braking operations under low hydraulic pressure are required to heat the
brake pads for the run in process.
Caution!
If the brakes are used as holding brakes, the braking torques can not be
attained. Reduction of the braking torques of up to 50% are possible.
10. Disassembling the brake
Life-threatening danger!
When disassembling the brake it is essential to ensure that the entire
drive train is secured against inadvertent activation.
Rotating components can cause severe injuries. Therefore, rotating
components (e.g. brake discs) must be secured against accidental
contact.
Caution!
Ensure that no hydraulic pressure is applied to the brake caliper.
Drain hydraulic fluid completely.
Caution!
Secure the brake for disassembly.
Disconnect the hydraulic lines from the brake caliper. Secure the brake for disassembly. Remove
the screws used to hold the brake in place. The brake caliper can now be removed from the
mounting surface.

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 15
11. Maintenance
General maintenance
Maintenance must be performed on the brake caliper at intervals of 4 weeks up to once a year,
depending upon the operating load.
Perform the following checks during every maintenance operation:
•Check brake pads for wear
•Check the bolt connection between the brake caliper and the machine component as well as
the bolt connections for the retaining plates for tightness.
•Check hydraulic lines and hydraulic connections for leaks.
•Observe fluid change intervals! Change mineral after every 8.000 hours or operation or once
per year.
Caution!
Brake pads must not come in contact with hydraulic fluid.
Permissible brake pad wear and replacement of the brake pads
Life-threatening danger!
Brake pads may be replaced only when the equipment system and/or the
working machine is at a complete standstill!
Caution!
Brake pads must always be replaced in pairs.
Only original RINGSPANN friction pads may be used.
Before replacing the brake pads, ensure that the mass held by the brake is secured to prevent
movement, as parts of the brake must be loosened/removed for replacement.

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 16
Permissible brake pad wear
Brake pads must always be replaced in pairs!
Pads must be replaced with the thickness of the mounting plate and the remaining pad material is
reduced to the following values:
HW model:
040
060
100
Thickness in mm
6
8
15
Ensure that the hydraulic fluid line is free of residual pressure, e.g. by removing the bleeder plug,
as fluid is forced back into the system during brake pad replacement.
Replacing brake pads for HW 040 HFA and HW 063 HFA
•Remove the holding brackets hold the brake pads in place.
•Pull the brake pads out of the brake caliper halves with pliers (attached to removal cams).
•Press the piston completely into the brake housing.
•If the inductive sensor option is available, disassemble the inductive sensor or turn the
inductive sensor back to the inner surface of the brake housing so that the sensor cannot be
damaged, see Figure 12.1.
•Insert the new brake pads and attach the holding brackets.
•If the inductive encoder option is available, refer to chapter 12 for resetting the inductive
encoder.
•Ensure that brake pad material is free of oil and grease.
Replacing brake pads for HW 100 HFA
•Remove the two inner mounting bolts and the spacer bushings.
•Pull the brake pads out of the brake caliper halves with pliers (attached to removal cams).
•Press the piston completely into the brake housing.
•If the inductive sensor option is available, disassemble the inductive sensor or turn the
inductive sensor back to the inner surface of the brake housing so that the sensor cannot be
damaged, see Figure 12.1.
Caution!
Ensure that the brake caliper is not under hydraulic pressure before replacing
the brake pads.

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 17
•Insert the new brake pads. Replace the spacer bushings and tighten the mounting bolts to the
specified torque.
•Alternatively, if sufficient space is available, you may replace the brake pads by removing the
holding plates (6) toward the inside (direction of brake disc axle).
•If the inductive encoder option is available, refer to chapter 12 for resetting the inductive
encoder.
•Ensure that brake pad material is free of oil and grease.
Replacing seals, strippers and piston gaskets
Fig. 11.1 HW 040 HFA and HW 063 HFA Fig. 11.2 HW 100 HFA
Fig. 11.3 HW 040 HFA and HW 063 HFA Fig. 11.4 HW 100 HFA
Life-threatening danger!
Seals/gaskets may be replaced only with the equipment system and/or working
machine is at a complete standstill!

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 18
Caution!
Ensure that no hydraulic pressure is applied to the brake caliper.
Observe the manufacturer’s instructions when handling solvents.
Maximum cleanliness is essential during work on the hydraulic system. Every part must be
cleaned with a solvent, dried and stored dust-free. Dirt shortens the life of seals and gaskets
significantly. Inspect the surfaces of the brake housing and the brake pistons. Surface damage
may destroy seals/gaskets immediately. Before mounting the gasket, check the installation
dimension B.
Replacing of piston gasket
For HW 040 to HW 100 (without retraction)
•Disconnect the brake caliper from the machine component and remove the brake pads.
•Close one connection bore in the brake housing with a plug.
•Connect the other bore to a hydraulic hand pump.
•Hold or clamp the brake housing firmly in place.
•Press the piston out with the hand pump.
•Remove the old piston gaskets.
•Please check before assemble every surface of the piston and the casing of damages.
•The pistonhole in the brake housing must be lightly greased with assembly grease before
mounting the new seal.
•Oil the new seal.
•Assemble the new the piston gaskets.
•Press the piston with a press or a plastic hammer into the cylinder bore of the brake housing to
the stop point and ensure that it is centred.
For HW 040 HFA to HW 100 HFA (with retraction)
•Remove the brake caliper and replace the gaskets as described above.
•Before pressing in the piston, centre the gripper rings (1) in the piston (2) relative to the bore
or to the outside circumference of the piston with a tapered pin.
•Press the piston with a press into the cylinder bore of the brake housing to the stop point and
ensure that it is centred.
Fig. 11.5

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 19
Piston gaskets:
Type
Gasket typ
Dimension B
(mm)
Gasket part no.
HW 040 HFA
Quad ring with
support ring
5,4 +0,2
5134-047003-000000
5137-040401-000000
Rod gasket
Type B, profile BA
8 +0,2
5155-040081-000000
HW 063 HFA
Quad ring with
support ring
6,6 +0,2
5134-073004-000000
5137-063304-000000
Rod gasket
Type B, profile BA
9,6 +0,25
5155-063081-000000
Rod gasket
Type B, profile BA
12,1 +0,25
5155-100081-000000
HW 100 HFA
Grooved ring Type C1
7,5 +0,2
5155-100001-000000
Grooved ring Type N100-11
6,9 +0,2
5138-100301-000000
12. Installing the inductive proximity switch (option)
Mounting and connection of inductive sensors for position monitoring
Life-threatening danger!
The inductive proximity switch may only be assembled and changed when the
system or the work machine is stationary!
If the brake is switch prepared, it is possible to mount a sensor on each brake caliper half.
The inductive proximity switch M12x1, length 65 mm, with a stainless steel housing, is enclosed
loosely with the supply. M12x1 threaded hole is provided on the brake caliper halves for
mounting the inductive sensor for operating condition monitoring of the released brake. For sizes
HW 040 and HW 063, a pin for detection is mounted on the friction lining. For the HW 100 brake
caliper, the rear side of the friction lining is detected.

Installation and Operating Instructions
for Brake Calipers HW 040/063/100 HFA
hydraulically activated
E 09.611e
Date: 19.01.2023
Issue: 18
drawn: BAHS
checked: EISF
Pages: 21
Page: 20
Bild 12.1
Switching function: PNP (normally open contact) Switching distance: 2 mm flush
Operating voltage: 10....30 V DC Operating current: 0...200 mA
Idle current: < or = 17 mA Residual current: < or = 0.5 mA
Voltage drop: < or = 3 V Short-circuit protection: Synchronising
Reverse polarity protection: Yes Switching display: Multi-hole LED
Temp. range: -25 to +70°C Type of protection: IP 67
Connection type: V1 appliance plug Housing: Stainless steel
Connection diagram of the inductive proximity switch
Fig. 12.2
Information!
The inductive proximity switch is to be arranged in such a way that it is activated
in depressurised state (the LED at the inductive proximity switch shines). If the
brake is activated, the piston moves out of the housing and pushes the friction
block onto the brake disc. The inductive proximity switch is then no longer
activated. The LED at the inductive proximity switch goes out.
In the case of HFA brake calipers with automatic wear adjustment, the inductive
sensor is not automatically adjusted in the event of friction block wear.
The setting of the inductive sensor in the non-actuated state in the event of
friction block wear must be readjusted manually if the LED on the inductive
sensor no longer lights up when the brake is depressurized. For each
adjustment/ readjustment, also check the friction block wear limit, see also
Chapter 11.2.