Kobold KUP Series User manual

Operating Instructions
for
Ball Valves
with Pneumatic Actuator
Model: KUP-...

KUP
page 2 KUP K02/0522
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Specific application ....................................................................................... 3
5.Safety notes .................................................................................................. 4
5.1.Safety of personnel .............................................................................. 4
5.2.Safety of machinery ............................................................................. 5
6.Operating principles ...................................................................................... 6
6.1.General information ............................................................................. 6
6.2.Design.................................................................................................. 6
6.3.Function „double-acting“ ...................................................................... 6
6.4.Function „single-acting“........................................................................ 7
7.Rotation Direction .......................................................................................... 8
7.1.Change of the rotation direction ........................................................... 8
7.2.Change of the rotation direction at actuator with function „double-acting“
............................................................................................................. 9
8.Ambient conditions ...................................................................................... 11
9.Assembly Instructions ................................................................................. 11
9.1.Mechanical mounting ......................................................................... 11
9.2.Pneumatically Installation .................................................................. 14
9.3.Disassembly ...................................................................................... 16
10.Adjustment/Starting ..................................................................................... 17
10.1.Adjustments ....................................................................................... 17
10.2.Starting .............................................................................................. 18
11.Emergency Operation ................................................................................. 19
12.Failure ......................................................................................................... 20
12.1.Failure causes ................................................................................... 20
13.Maintenance/Cleaning ................................................................................ 20
13.1.Maintenance ...................................................................................... 20
13.2.Mounting of the spare part kit ............................................................ 21
13.3.Cleaning ............................................................................................. 26
14.Technical details ......................................................................................... 26
15.Device Description ...................................................................................... 27
16.Order Codes ............................................................................................... 28
17.Dimensions [mm] ........................................................................................ 31
18.EC Declaration of Conformance ................................................................. 35
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

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KUP K02/0522 page 3
2. Note
Please read and take note of these operating instructions before unpacking and
putting the unit in operation, and follow the instructions precisely as described
herein.
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and with the prevailing regulation applying to
operational safety and the prevention of accidents.
When used in machinery, the device may only be placed in operation if the
machine in use complies with the EEC machinery guidelines.
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
 Ball valve with pneumatic activator model: KUP-…
 Optional: solenoid valves, limit switches
4. Specific application
Model KUP pneumatic actuators can be employed to automatically open and
close ball valves with the help of control air. Do not use an aggressive gas as a
control fluid. We recommend, instead, the use of filtered air. The fitting material
and gaskets must be resistant to the medium flowing in the pipe.

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page 4 KUP K02/0522
5. Safety notes
You must pay attention to special safety aspects depending on the prevailing
technical conditions and the time at which you install and adjust the actuator, and
put it into operation!
For example, you will be exposed to much greater risks when placing the device
in operation if you open or close a pipe in an operational chemical plant with the
pneumatically operated ball valve than when you place the device in operation for
test purposes at a "dry" section of the plant in the assembling hall.
Because we cannot predict the conditions that will apply at the time of
installation/adjustment/putting into operation, we have provided a comprehensive
list of risk notes below, some of which may not apply to your particular
application.
Please follow the instructions that apply to your situation only!
5.1. Safety of personnel
5.1.1. Safety notes for installation
We expressly point out that the installation, electrical wiring and adjustment of the
rotary actuator should only be carried out by trained and skilled personnel with
sound mechanical and electrical technical skills!
 Shutdown all devices/machinery/plant affected by the installation or repairs!
If necessary, disconnect the devices/machinery/plant from the electrical
supply!
 Make sure you do not introduce risk by shutting down devices/machinery/plant
in chemical plant, for example!
 You should inform the shift supervisor, the health and safety engineer, or the
plant manager immediately about any fault that occurs with the ball valve with
pneumatic rotary actuator in a running plant. This is to avoid any
discharge/overflow of chemicals or leakage of gases by taking suitable
precautionary measures!
 Depressurize pneumatic/hydraulic devices/machinery/plant before installation
and service!
 Attach warning labels to devices/machinery/plant to prevent someone from
unintentionally putting them into operation.
 Installation and servicing should be carried out in compliance with the
appropriate professional/trade association safety and accident prevention
regulations.
 Check that safety devices (e. g. emergency stop buttons, relief valves, etc.) are
working correctly.
 Before mounting check, the rotation direction and the position of the actuator.

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KUP K02/0522 page 5
5.1.2. Safety notes for adjustment / starting
As a result of the starting (pneumatic or by hand) of a pneumatic actuator the
position of a flanged slide/valve/flap will be changed!
Therefore, the flow of gases, steam, liquids, etc. may be enabled or interrupted!
 Satisfy yourself that, as a result of the starting or the test adjustment no
potential hazards will be produced for the personnel or the environment!
 If necessary, set up warning signs in order to prevent the inadvertent starting
up or shutting down of the device/machine/plant!
 By ending the adjustment check the correct function and should the occasion
arise the position of the slide/valve/flap.
 Check the function of the limit switches (option)!
 Check, whether the slide/valve/flap will be closed totally, if the control signals
the appropriate limit stop!
 Through suitable measures, prevent actuating links being trapped by moving
actuating elements!
 Check the right function of all safety devices (for example emergency push off
buttons / safety valves)!
 Carry out the starting and the adjustments only in accordance with the
instructions described in this documentation!
 When adjustments are being carried out on a switched-on actuator with
options (e.g. solenoid valves, limit switches) there is the risk that life parts
(230V AC~) can be touched!
Therefore, the adjustments must be carried out only by the electrician or a
person having adequate training, who is aware of the potential hazard!
5.2. Safety of machinery
The rotary actuator s a quality product which is produced in accordance with the
recognized industrial regulations. It left the manufacturers work in a perfect safety
condition!
In order to maintain this condition, as installer/user you must carry out your task
in accordance with the description in these instructions, technically correctly and
with the greatest possible precision.
We assume, as trained specialist you are having mechanical and electrical
knowledge!
 The pneumatic actuator must be used only for a purpose corresponding to
its construction!
 The pneumatic actuator must be used within the actuator specified in the
technical data!

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page 6 KUP K02/0522
 The operation of the pneumatic actuator beyond the admissible temperature
range will overburden or damage the sealings and bearing.
 The operation of the pneumatic actuator beyond the admissible working
pressure will damages the internal parts and the body.
 Never remove or loosen the caps or accessories, if the actuator will be under
pressure or will be connected with a supply voltage (option).
 Satisfy yourself that, as a result of the mounting, the starting or as a result of
the test adjustment on the pneumatic actuator, no potential hazards will be
produced for device/machine/plant!
 Do not mount the actuator, start the actuator or carry out any adjustments on it,
if the actuator, the supply lines or the part of the plant on which it is mounted is
damaged!
 Before mounting the actuator check the smooth movement of the
slide/valve/flap on which the actuator will be mounted.
 By ending mounting check the correct function and adjustment of the actuator
and check the correct function of the options (e.g. solenoid valve, limit switch).
6. Operating principles
6.1. General information
The actuator is a pneumatic twin-piston drive, designed primarily for operating
ball valves and butterfly valves. A double-action and a spring-return (single-
action) type is available. The twin-piston system affords a high torque with
minimum overall dimensions. The rotation angle is adjustable with the standard
settings by ± 6 degrees.
6.2. Design
Due the twin-piston system the force developed by the counter-running pistons is
transmitted to one common pinion via two racks solidly connected with the piston.
This principle ensures a linear torque transmission along the entire stroke.
6.3. Function „double-acting“
Pressure is given through port „P1“ into the actuator between the two piston
surfaces. The pis-tons expand and transfers the force to the pinion which turn
round counterclockwise about 90° -> the actuator moves into position „OPEN“. By
giving compressed air through port „P2“, port „P1“ exhausts, the pressure in both
chambers between the caps and pistons will increase and the pistons will strike
against themselves. Therefore the pinion turns clockwise about 90° ->the
actuator moves into position „CLOSE“ (see Fig.).

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KUP K02/0522 page 7
Description of function, double-acting
6.4. Function „single-acting“
Pressure is given through port „P1“ into the actuator between the two piston
surfaces. The pistons expand against the spring force. The pistons force will be
transfer to the pinion by racks. The pinion turns round counterclockwise about 90°
->the actuator moves into the position „OPEN“. Exhausting the port „P1“ the
pistons will be replaced by the spring force. Therefore the pinion turns clockwise
about 90° -> the actuator moves into the position „Close“. The springs will be able
to adjust to the working conditions (see Fig.).
Description of function, single-acting

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page 8 KUP K02/0522
7. Rotation Direction
The pneumatic actuators are available as „right revolving“ or „left revolving“
actuators.
The standard rotation direction is to turn left. The rotation direction of the pinion of
the pneumatic actuator will be counterclockwise to be open and clockwise to be
close. The rotation direction refers to a view on the top of the actuator (see Fig.).
Before mounting the pneumatic actuator on a slide/valve/flap, take care that the
rotation direction will be practicable in your case. If appropriate, you have to
change the rotation direction by reconstructing the pistons of the actuator.
Rotation direction
7.1. Change of the rotation direction
In the following description we assume, that you have read the former chapters
attentive. We also assume that you will observe the safety advices and warnings
from chapter 5. „Safety advice“ during the mounting / disassembly.
Do not open a pneumatic actuator with the function „single acting“ on no
account!
If you have not read chapter 5.“Safety advices“ until now, read these
important advices now and turn back to this page!
The following description based on the assumption, that the pneumatic actuator is
not been mount-ed on a slide/valve/flap. All accessories have to be removed. The
mentioned rotation direction refers to the standard rotation direction „closed by
rotating clockwise“.
During the working at an opened actuator take care for great cleanness, because
even little pollution should cause a hasten wear or will damage the sealings and
the treads.

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KUP K02/0522 page 9
7.2. Change of the rotation direction at actuator with function
„double-acting“
Loosen the cap bolts (1).
At single-acting pneumatic actuators the changing of the rotation direction
will be permitted only by the manufacturer. Do not loosen or screw out the
cap bolts. There will be a high tension at the caps causes by the resilience.
Remove the caps (2) and put them aside. The caps a symmetrical and therefore
the caps could be mounted both on the left and the right end of body (5).
Turn round the shaft (3) counterclockwise with a spanner until the racks of the
pistons (4) and the pinion at the shaft didn’t mesh anymore.
Do not drive out the pistons with compressed air.
The pistons have to stand out from the body now. Turn back the shaft clockwise
about 90°.
Change of the rotation direction, Removing the caps

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page 10 KUP K02/0522
Turn around the pistons (1) about 180°, don’t take the pistons out of the body (2)
at this (see Fig.)
Insert the piston (1) into the body, so that both racks (3) will mesh into the teeth of
the shaft (4) at the same time. Observe the turning direction of the shaft.
Turn the shaft counterclockwise with a spanner until the groove of the shaft will
be at right angles to the axle of the actuator. The pistons have to strike against
themselves and that the piston will be symmetrically in the body.
If appropriate, repeat the working operations to adjust the shaft.
Put the cap onto the body and align it. Put the cap seals into the sealing groove
of the cap and check the right placement. Screw the cap bolts with the washers
into the body and tighten them crosswise.
Change of the rotation direction, Turning of the pistons

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KUP K02/0522 page 11
8. Ambient conditions
The pneumatic actuator KUP is designed for industrial operating conditions!
However, some special conditions are to be observed for its mounting and
subsequent operation!
Take care that
 the actuator is mounted in accordance with the mounting advice listed
below.
 the actuator is used in accordance with the characteristic values specified
in the technical data.
The non-observance of the mounting advice or the use outside the specified
characteristic values can have a negative influence on the functional reliability of
the actuator.
9. Assembly Instructions
The mounting of the pneumatic actuator KUP is restricted to:
 the mechanical mounting of the actuator on a slide/valve/flap,
 the pneumatically installation of the actuator with the pilot air lead, and
 if need be the mounting and connection of options and accessories.
The mounting position of the actuator ED/EE is arbitrary.
In the following description we assume, that you have read the former
chapters attentive! We also assume that you will observe the safety advices
and warnings from chapter 5 „Safety advice“ during the mounting /
disassembly.
If you have not read chapter 5 „Safety advices“ until now, read this important
advices now and turn back to this page!
The mounting and the pneumatically (electrical) installation must be carried out
only by trained specialist personnel having mechanical (and electrical)
knowledge.
Which variant of the device you have will be seen on the name-plate on the back
of the pneumatic actuator KUP.
The explanation of the designation will be found in the datasheet.
9.1. Mechanical mounting
Two mounting variants are available:
 directly mounting, or
 mounting with a bracket and a stem
Before mounting you have to fix a qualified mounting variant for your application.
Directly mounting will be able, if the dimensions of the shafts and the ISO -
flanges of the actuator and the slide/valve/flap are the same. Differences of the
dimension for the stem of the slide/valve/flap will be able to be equalized by
available bushings (option) in some cases.

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A mounting with bracket and stem will be necessary, if the differences of the
dimensions between the shaft of the actuator and the stem of the slide/valve/flap
are not able to be equalized by a bushing or the ISO-flanges did not match.
This mounting variant will also be used by high/low medium temperatures or
voluminous isolated pipes.
By mounting with bracket and stem observe also the mounting device of the
supplier of these parts.
Do not drill any holes into the body of the actuator- the damage of the actuator or
an insufficient fastening of the actuator will be the result.
9.1.1. Directly mounting
Ensure that the actuator and the slide/valve/flap will be in position „CLOSE“.
Put the bottom side of the actuator to the slide/valve/flap that the stem will enter
into the octagonal boring of the shaft of the actuator. If necessary, use an
appropriate bushing (options), to equalize differences of the dimension between
the stem and the shaft.
Align the actuator to the slide/valve/flap.
Put the actuator onto the stem of the slide/valve/flap until the surface of the
actuator cling to the ISO - flange of the slide/valve/flap. If this operation will be
ponderous the shaft of the actuator will be driven onto the stem of the
slide/valve/flap by slightly strokes with a plastic hammer.
Fasten the actuator with fit bolts. Observe the maximum depth of the threaded
holes of the actuator. Would there be two sizes of hole circles to fasten the
actuator, you have always to use the greater one.
Tighten the screws. Therefore, observe the maximum torque of the chosen
screws.
Mounting / disassembly, directly mounting

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KUP K02/0522 page 13
9.1.2. Mounting by bracket and stem
Ensure that the actuator and the slide/valve/flap will be in position „CLOSE“.
Put the stem onto the stem of the slide/valve/flap. Therefore, observe the position
of possibly position indicators.
Put the bracket onto the slide/valve/flap and align them.
Fasten the bracket with fit bolts. Observe the maximum depth of the threaded
holes of the actuator. Would there be two sizes of hole circles to fasten the
actuator, you have always to use the greater one. Tighten the screws. Therefore,
observe the maximum torque of the chosen screws.
Mounting / disassembly, Mounting with bracket and stem
Put the bottom side of the actuator to the slide/valve/flap that the stem will enter
into the octagonal boring of the shaft of the actuator.
Align the actuator to the slide/valve/flap resp. to the console.
Put the actuator onto the stem of the slide/valve/flap until the surface of the
actuator cling to the ISO - flange of the bracket. If this operation will be ponderous
the shaft of the actuator will be driven onto the stem of the slide/valve/flap by
slightly strokes with a plastic hammer.

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page 14 KUP K02/0522
Fasten the actuator with fit bolts. Observe the maximum depth of the threaded
holes of the actuator. Would there be two sizes of hole circles to fasten the
actuator, you have always to use the greater one.
Tighten the screws. Therefore, observe the maximum torque of the chosen
screws.
Mounting / disassembly, Mounting with console and stem
9.2. Pneumatically Installation
The installation of the air supply has to take place with great care. Especially the
threaded connection, fittings and sealings have to been clean and free of
pollution. Pollution which attains in-side the actuator, will causes hasten wear and
the damage of the sealings and the treads.
The pneumatic actuator KUP is available in two operation variants:
 function double-acting, or
 function single-acting with spring return
Observe the descriptions to the name-plate.
Before the pneumatically installation will take place, you have to ascertain
existing operation variant about your application. A description of the operation
variants you may find at description of function.
Use only the correct hose and hose connectors for your application.
By laying the hose take care, that the hose will not be creased, squeezed or
sheared or that the hose will be layed over edges. Also take care that there will
be no pressure or traction in the hose.

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KUP K02/0522 page 15
If appropriate lay the hoses in conduits or cable ducts.
As an alternative to the shown variant the control of the actuator could take place
by a directly mounted pilot valve. In this case see the enclosed operation and
installation manual of the pilot valve.
9.2.1. Function „double-acting“
At first you have to remove the protection caps from the ports „P1“ and „P2“.
Screw in suitable pneumatic fittings (e.g. Art. C12xx or R12xx) into the ports „P1“
and „P2“ and tighten the fittings.
Insert a hose into the fitting at port „P1“ which will feed the actuator with
compressed air during the opening operation.
Insert a hose into the fitting at port „P2“ which will feed the actuator with
compressed air during the closing operation.
Tighten the hoses in the fittings at port „P1“and „P2“.
Check the tightness of all connections.
Mounting / disassembly, pneumatically installation function double-acting
9.2.2. Function „single-acting“
At first you have to remove the protection caps from the ports „P1“ and „P2“.

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page 16 KUP K02/0522
Screw in a suitable pneumatic fitting (e.g. Art. C12xx or R12xx) into the port „P1“
by using a fit sealing compound and tighten the fitting.
Insert a hose into the fitting at port „P1“ which will feed the actuator with
compressed air during the opening operation.
Screw in a throttle valve with silencer (e.g. Art. AX1000xx) into the port „P2“ by
using a fit sealing compound and tighten the throttle valve.
Tighten the hose in the fitting at port „P1“.
Check the tightness of all connections.
This completes the mounting and the pneumatically installation of the actuator.
Mounting / disassembly, pneumatically installation function, single acting
9.3. Disassembly
Although the disassembly of an actuator in principle proceeds in the reverse
sequence to the mounting, some essential points should be clarified!
In order, for example, for the operational chemical plant which was mentioned at
the beginning to remain in operation:
 Will the actuator to be disassembled be replaced immediately by another
(or equal valve)? If not, in which position should the actuator be, following
the disassembly?
 Must the actuator be fixed in its intended position?
 If appropriate, does the production process of the plant need to be
stopped?
 Is it necessary to inform specific personnel about the disassembly? Etc.

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KUP K02/0522 page 17
Never remove an armature under pressure.
Ball valves are able to enclose the pressurize medium. Release the
pressure in the pipes, to relieve the pressure at the armature.
9.3.1. Pneumatically disassembly
Turn the actuator with the slide/valve/flap into its fix position! Switch off the
compressed air supply and the control of the actuator! If necessary, set up
warning signs in order to prevent
 the inadvertent starting up of the devices / machines / plants, or
 the switching on of power supply of the control of the actuator.
Loosen the fitting of the pilot medium and take away the pipe of the pilot medium.
Close the pipe of the pilot medium if the pipe is not also being disassembled or is
not to be immediately reconnected to another pneumatic actuator.
9.3.2. Mechanical disassembly
Unscrew the four fastening screws of the actuator and pull the actuator from
mounting position. This completes the disassembly of the actuator.
10. Adjustment/Starting
Before you open the actuator, undertake adjustments by hand or start the
actuator, you have to read chapter 5.
If you have read chapter 5 „safety advice“ until now, read these important advices
now and turn back to this page.
The following descriptions are based on the assumption
 the actuator is installed on a slide/valve/flap.
 the function of the actuator in conjunction with the slide/valve/flap has
been checked.
 the limit position of the slide/valve/flap is visible.
If appropriate, take note of chapter Mounting/Disassembly.
10.1. Adjustments
The pneumatic actuator KUP will be adjusted exactly by the manufacturer after
mounting on a slide/valve/flap. Perhaps a new adjustment of the actuator will be
necessary after disassembling and mounting on a new slide/valve/flap.
Before you undertake adjustments on actuators which are installed in operational
plant, find out whether feeding control leads with pressure (e. g. by „OPEN“ or
„CLOSE“ operation) will have in-fluence on further actuators or whether the
closing/opening of limit switches (options) will trigger (mal)functioning of other
devices.
If appropriate, disconnect these leads from the actuator to be adjusted!
Never put any limbs and never insert anything into the slide/valve/flap. Heavy
injuries or damages will be the consequence.

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page 18 KUP K02/0522
Never adjust the adjusting screws against the efficacy of pressure.
Put the pistons of the actuator together by feeding the port „P2“ with compressed
air (only function double-acting), or exhausted port „ P1“ (only function single-
acting).
Loosen the nuts (1) in both caps.
Turn one of the adjustment screws (2) into the cap (3), until the screw aligns with
the cap or the screw will be deeper about max. 2mm.
Separate the pistons by feeding the port P1 with compressed air.
Turn out the adjustment screw (2), until the rotation angel of 90° or the desired
rotation angle will be reached.
Screw the adjustment screw of the second cap against the piston, until you will
feel the increase of the necessary torque moment.
Secure the adjustment screws by tighten the nuts (1). Take care that the
adjustment screw will not turn.
Check the adjustment and if neccessary correct it.
By this the adjustment of the pneumatic actuator will be finished.
Adjustment/Starting
10.2. Starting
Before starting the pneumatic actuator KUP, you have to read chapter 5.
If you have not read chapter 5 „safety advice“ until now read these important
advices now and turn back to this page.
The starting of a pneumatic actuator which is mounted in a plant (e.g. in a refinery
or in a chemical plant) should only happen in accordance with
 the instructions of the hole plant!
 after carrying-out the adjustments described in chapter 10.1 „Adjustment“!
Switch on the power supply of the control.
Switch on the compressed air supply.

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KUP K02/0522 page 19
Actuate the pneumatic actuator by hand with the control and check the correct
function of the actuator and the mounted slide/valve/flap.
Check all pipe connections for tightness.
Check all the pilot leads for tightness.
Check the function of the accessory units.
11. Emergency Operation
In case of a breakdown of the supplying with compressed air or the power supply
or in case of trouble with the pneumatic actuator you can actuate the
slide/valve/flap with the pneumatic actuator by hand.
Caution, relieve the actuator of pressure.
Take care in order to prevent the inadvertent starting.
Put an appropriate spanner onto the flanks on the top of the shaft of the actuator.
Turn the shaft in the direction as desired. At this don’t turn the pistons forcible
against the limit stops, because such action would destroy the actuator.
Observe at single acting actuators you will need a higher torque moment and the
actuator turns back into limit position by spring force immediately.
Caution! At single acting actuators there will be a risk of violation by jerking
shafts.
Remove the spanner from the shaft.
If necessary, inform the shift foreman/ safety engineer or the manager about the
disturbance without delay in order, for example, to avoid an outflow/ overflow of
chemicals or a discharge of gases in good time by means of suitable measures!
Do not fasten any tools or handles at the shaft. By switching on the compressed
air supply or the power supply these tools and handles will be turn around rapidly
and entail destructions and violations!
Emergency Operation

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page 20 KUP K02/0522
12. Failure
If, during the test run or during operation, a functional fault of the pneumatic
actuator should occur, you are requested to carry out the adjustment of the
slide/valve/flap (in an emergency) by hand. See also chapter 11 Emergency
Operation.
If necessary, inform the shift manager/safety engineer or the manager
about the disturbance without delay in order, for example, to avoid an
outflow/overflow of chemicals or a discharge of gases in good time by
means of suitable measures.
Next, using the following list (12.1 Failure causes), attempt to find the reason for
the causes of the failure and, if it lies within your capabilities, to correct this.
Do not try to repair the pneumatic actuator!
Isolate the failed pneumatic actuator from the power supply disconnect the
providing with com-pressed air!
In case of defect in the pneumatic actuator make contact with the supplier.
The telephone number will be found on the back cover of these mounting and
installation manual.
12.1. Failure causes
 Is the power supply to the control switched on?
 Is the device for the compressed air switched on?
 Are the leads from the controller to the pressure actuated valve
undamaged?
 Is the actuator mounted correctly on the slide/valve/flap?
 Is the slide/valve/flap able to move smooth?
13. Maintenance/Cleaning
13.1. Maintenance
On normal accounts the pneumatic actuator KUP is maintenance free. In regular
turns check the tightness of the pneumatic actuator.
 are the cap seals tight?
 is the pinion seal on the top and on the bottom of the actuator tight?
 are the hose fittings tight?
 are the body or the caps cracked?
 is the seal of the limit stop adjusting screw tight?
 are the counter nuts have got loose?
In case of a defect in the pneumatic actuator make contact with the supplier. The
telephone number will be found on the back cover of this operation and
installation manual.