Danfoss PCVD User manual

© Danfoss | 2016.05 VI.JA.C3.5B | 1
Instructions
Pilot-controlled Pressure Reducer PCVD,
Pilot-controlled Safety Shut-off-valve PCVSAD
DN 100-250,PN16/25
English Page 2
Einbau-, Bedienungsanleitung
Hilfsgesteuerter Druckminderer PCVD,
Hilfsgesteuertes Sicherheitsabsperrventil (SAV) PCVSAD
DN 100-250,PN16/25
Deutsch Seite 16

Instructions PCVD, PCVSAD
2 | © Danfoss | 2016.05 VI.JA.C3.5B
1 Safety Notes .......................................................3
2 Definition of Application .............................3
3 Description...........................................................4
3.1 Construction ......................................................... 4
3.2 Mode of Operation ............................................ 4
4 Technical Data ................................................... 4
5 Scope of Delivery.............................................. 5
6 Assembly .............................................................. 6
6.1 Prior to Assembly ................................................ 6
6.2 Installation Position ........................................... 6
6.3 When Installing observe ................................... 6
6.4 Impulse Tube Installation ................................. 6
6.5 Insulation ............................................................... 6
6.6 Installation Scheme ............................................ 7
6.7 Assembly Drawings, Dimensions ................. 8
7 Start-up................................................................10
7.1 Required Static Pressure, Pressure
Difference ............................................................10
7.2 Leak and Pressure Tests ..................................10
7.3 Filling the System ..............................................10
7.4 Start-up .................................................................10
7.5 Putting out of Operation ...............................10
7.6 Adjustment of the Setpoint .......................... 11
7.7 Sealing .................................................................. 11
7.8 Function Test ...................................................... 11
8 Trouble Shooting ...........................................12
8.1 Fault, Possible Cause, Remedy ..................... 12
8.2 Diaphragm Break of
the Controller SAVD ......................................... 12
9 Replacement of Valve,
Actuator, Trim ..................................................13
9.1 Dismounting and Mounting Actuator
and Valve of the Valve Unit ........................... 13
9.2 Replacement of Trim Valve VFG 2 ............... 14
9.3 Dismounting,
Mounting Actuator AVD, SAVD ....................14
9.4 Replacement of
Trim Valve AVD, SAVD ...................................... 15
Table of Contents

Instructions PCVD, PCVSAD
© Danfoss | 2016.05 | 3
VI.JA.C3.5B
MAINTENANCE
FREE
1 Safety Notes
2 Definition of
Application
The controller is used for flow rate limitation of
water for heating, district heating and cooling
systems.
The admissible medium temperatures depend
on the design and comprise 5-150 °C,
5-200 °C.
The technical data on the rating plates deter-
mine the use.
Prior to assembly and
commissioning to avoid injury
of persons and damages of the
devices, it is absolutely
necessary to carefully read and
observe these instructions.
Necessary assembly, start-up, and maintenance
work must be performed only by qualified,
trained and authorized personnel.
Prior to assembly and maintenance work on the
controller, the system must be:
depressurized,
cooled down,
emptied and
cleaned.
Please comply with the instructions of the
system manufacturer or system operator.

Instructions PCVD, PCVSAD
4 | © Danfoss | 2016.05 VI.JA.C3.5B
Pilot controller AVDThrottling element
Valve Unit PCV-VFG2
Throttling valve
T
hrottling valve
only DN150-250
3 Description 3.1 Construction
3.2 Mode of Operation
The control unit consists of the PCV-VFG2 valve
unit, installed in the main pipe, and the pressure
controller AVD or safety shut-off-valve SAVD
installed as pilot controller in the bypass. In the
bypass line, a throttle element is installed in front
of the pilot controllers.
As a pressure reducer, the controller keeps the
pressure behind the controller unit in accordance
with the preset setpoint on a constant level.
As a safety shut-off valve, the controller
guarantees that the pressure is not exceeded. If
the controller diaphragm is damaged, the valve
is closed via the second diaphragm.
The valve and the pilot valves are pressure-
balanced.
The setpoint for the pressure is adjusted by
pre-stressing the setpoint spring of the pilot
controller.
Valve unit PCV-VFG 2
The valve unit in the main pipe is opening on
rising pressure. The pilot controllers in the
bypass line are closing on rising pressure.
In case of small flow rates, the valve in the main
pipe remains closed through the pressure spring
in the actuator of the valve unit. The pressure is
exclusively controlled by the pilot controller.
If the flow rate in the bypass is increased, the
pressure in the throttle element (Venturi nozzle)
decreases.
The reduced pressure acts through an impulse
tube upon the lower chamber of the actuator
of the valve unit. The main valve is thus opened
shock-free and continuously.
If the flow rate is reduced, the pressure in the
throttle element raises and the main valve closes.
This sequential switching guarantees an
operation free of vibrations and a small control
deviation over a wide positioning range.
4 Technical Data
Technical data, see rating plates and the PCV
data sheet.

Instructions PCVD, PCVSAD
© Danfoss | 2016.05 | 5
VI.JA.C3.5B
5 Scope of Delivery
DN 100-125
Assembly kit valve unit PCV-VFG 2 Pilot controller AVD DN 25
AVD
Cu pipe Ø 6 × 1 × 1500 mm
Cu pipe Ø 10 × 1 × 3000 mm
Throttling element
DN 150-250
Assembly kit valve unit PCV-VFG 2 Pilot controller AVD DN 40
Throttling element
Cu pipe Ø 6 × 1 × 1500 mm
Cu pipe Ø 10 × 1 × 3000 mm
SAVD
AVD SAVD

Instructions PCVD, PCVSAD
6 | © Danfoss | 2016.05 VI.JA.C3.5B
pin only
weld
do NOT
weld
1
2
6 Assembly 6.1 Prior to Assembly:
Depressurized system before
any assembly work !
CAUTION!
• Clean pipeline system.
• Install strainer in front of the controller.
• Install shut-off units in front of and behind
the controller.
6.2 Installation Position
• Installation is only permitted in horizontal
pipelines with the actuators hanging in a
downward position.
6.3 When installing observe:
• Observe direction of flow.
• Design with welded ends:
• Loads on the valve body and the throttle
element by the pipes are not permitted.
6.4 Impulse Tube Installation
1. See installation scheme, section 6.6.
2. For CU pipes Ø 10 × 0.8, insert sockets 1on
both sides.
3. Care for correct position of the cutting
rings 2.
6.5 Insulation
The diaphragm actuators must not be insulated
when insulating system parts.
4. Press impulse tube into the threaded fitting
up to its stop.
5. Tighten union nut, torque 40 Nm
6. Dismount again and check the position of
the cutting rings.

Instructions PCVD, PCVSAD
© Danfoss | 2016.05 | 7
VI.JA.C3.5B
Shu
t-off valve
CU pipe Ø 6 × 1
Valve unit PCV - VFG 2
Throttle valve
Throttling element
Throttle valve
(DN 150-250 only)
CU pipe Ø 10 × 1
Pilot controller AVD
lay impulse tube during mounting
D
o not install a
shut
-off valve her.
But if you do s
o,
it
is absolutely
necessar
y
to
secure against
unauthorized
closing
.
CU pipe Ø 6 × 1
Valve unit PCV - VFG
Throttle valve
Throttling element
Throttle valve
(DN 150-250 only)
CU pipe Ø 10 × 1
Pilot controller SAVD
lay impulse tube during mounting
6.6 Installation Scheme
Installation in the Return Line
Installation in the Supply Line

Instructions PCVD, PCVSAD
8 | © Danfoss | 2016.05 VI.JA.C3.5B
Dismount impulse tube
- Unscrew threaded fittings at the
valve and at the actuator
- Close opening at the valve
with a stopper (see assembly kit
order No. 003G1599)
Cu pipe Ø 10 × 1
Lay when assembling.
Install impulse tubes
laterally because of dir
t
Cu
pipe Ø 6 × 1,
when laying
,
use the assembly
kit
order No
. 003G1599
Valve unit PCV - VFG 2
DN 25: pipe Ø 33,7 × 3,2
Ma
terial: ST 35.8
(not par
t of the delivery)
Pilot controller AVD
DN 25 SW 50
Throttling element
these parts are
not in the scope of delivery
6.7 Assembly Drawings, Dimensions
DN 100-125

Instructions PCVD, PCVSAD
© Danfoss | 2016.05 | 9
VI.JA.C3.5B
Dismount impulse tube
- Unscrew threaded fittings at the
valve and at the actuator
- Close opening at the valve with a
stopper (see assembly kit order
No. 003G1599)
Cu pipe Ø 10 × 1
Lay when assembling.
Install impulse tubes
laterally because of dirt
Cu
pipe Ø 6 × 1,
when laying
,
use the assembly
kit
order No
.003G1599
DN 40: pipe Ø 48,3 × 3,2
Ma
terial: ST 35.8
(not par
t of the delivery)
these parts are
not in the scope of delivery
DN 150-250
Dimensions
Nominal diameter DN 100 125 150 200 250
L1
mm
350 400 480 600 730
H1 530 530 619 647 697
H2 -174 229 254
D2 263 380
D1 250 350 385 500
B200 210 310 336 412
A ≥ 290 320 350 410

Instructions PCVD, PCVSAD
10 | © Danfoss | 2016.05 VI.JA.C3.5B
1
p2 p1
7
2
3
5
4
6
8
910
7 Start-up 7.1 Required Static Pressure, Pressure
Difference
For a proper functioning, a minimum pressure
difference of p1 − p2 ≥ 0.5 bar is required.
The static pressure p1 in front of the controller
must not fall below 1.5 bar (excess pressure).
Non-observance may lead to cavitation and
damages in the throttling element 1.
7.3 Filling the System
Note:
The controller 6is closed when no pressure is
applied and only opens with a defined flow in the
bypass.
The pilot controllers 7are closing on rising pressure.
7.2 Leak and Pressure Tests
To avoid too high pressures at
the diaphragm actuators, the
following should be observed
prior to any pressure tests:
Actuator of valve unit:
The admissible operating excess pressure in the
actuator 2is 15 bar 1). For higher pressures, you
must:
• Remove the impulse tube 3
The admissible operating excess pressure in the
actuator 4is 25 bar 1). For higher pressures, you
must:
• Remove the impulse tubes 5at the actuator
and close the connections with a stopper
• Prior to any leak or pressure test, the
instructions in section 7.3 must be complied
with.
1) Pre-condition: Same pressure on both sides of the diaphragm.
If the pressure load is one-sided, the (+)diaphragm chamber
may have an excess pressure of 1 bar in comparison to the (-)
diaphragm chamber.
Procedure
1. Open shut-off valves 8that possibly exist in
the impulse tubes.
2. Slowly open shut-off units first in the return
flow 9and then in the supply flow 10.
7.4 Start-up
During starting-up the filled system, open the
units in the same sequence as described in
section 7.3.
7.5 Putting out of operation
When putting the system out of operation, first
close the shut-off units in the supply flow and
then those of the return flow.

Instructions PCVD, PCVSAD
© Danfoss | 2016.05 | 11
VI.JA.C3.5B
1
2Regler PCVD
p2
p1
p
0 50% Vmax
3
SW 22
4
7.6 Adjustment of the Setpoint
The setpoint of the pressure must be adjusted at
the pilot controller AVD 1. The setpoint range is
indicated on the rating plate of the actuator.
Procedure
1. Prior to the differential pressure adjustment,
start the system as described in section 7.4.
The differential pressure can also be adjusted
while the bypass 2is opened.
2. Adjust the flow rate at a valve in flowdirection
after the controller PCVD.
Value approx. 50 % of the max. flow rate 3.
3. Adjustment of the pressure by turning the
setpoint adjuster 4.
Turning to the right, increases the setpoint.
Turning to the left, reduces the setpoint.
7.7 Sealing
The setpoint adjusters may be sealed.
7.8 Function Test
Check the pressure of the running system with
different load situations.
If the pressure is exceeded in either direction,
adjust the pressure as described in section 7.6.

Instructions PCVD, PCVSAD
12 | © Danfoss | 2016.05 VI.JA.C3.5B
8 Trouble Shooting 8.1 Fault, Possible Cause, Remedy
Fault Possible cause Remedy
Controller does
not hold the
pressure on a
constant level
Air in the actuators 1. Loosen impulse tube connections
at the actuators by approx. 1 rotation.
2. Deaerate, Caution: hot water !
(move impulse tube until medium
penetrates).
3. Tighten impulse tube connections.
Impulse tubes or impulse tube
connections are dirty or damaged.
1. Remove impulse tube.
2. Clean impulse tubes and impulse
tube connections and check for free
passage.
Pressure is
too high
Pilot valve AVD (SAVD) does not close:
Valve seat or plug is dirty or damaged.
1. Remove impulse tube.
2. Dismount actutor and trim.
Procedure see section 9.4.
3. Clean seat and plug.
4. If damaged, replace trim or valve.
Valve VFG2 does not close:
Valve seat or plug is dirty or damaged.
1. Remove impulse tube.
2. Dismount actutor and trim
1)
.
Procedure, see section 9.2.
3. Clean seat and plug.
4. If damaged, replace trim or valve.
Rolling diaphragm in the actuator AVD
(pilot controller) is defective,
i.e. valve AVD does not close.
1. Remove impulse tube.
2. Replace actuator, see section 9.3.
Pressure is too
low, no or low flow
Rolling diaphragm in the actuator SAVD
(pilot controller) is defective, i.e. valve AVD
is not closed by the safety diaphragm. In
this case, some water penetrates at the
threaded fitting of the actuator.
1. Remove impulse tube.
2. Replace actuator, see section 9.3.
Rolling diaphragm in the actuator of the
valve unit is defective, i.e. valve VFG2 does
not open.
1. Remove impulse tube.
2. Loosen union nut SW 46 and remove
actuator, see also section 9.1.
3. Replace actuator.
1) The trim can be replaced by qualified personnel up to DN 125.
From DN 150 replacement should be carried out by the Danfoss service personnel.
8.2 Diaphragm Break of the Controller SAVD
If the control diaphragm 1breaks, pressure is
developped in the two intermediate chambers 2.
This pressure acts upon the safety diaphragm 3
and causes the following:
• The valve is closed.
• The control function does not operate.
• A slight water leakage at the threaded
joint 4indicates a break of the diaphragm.
The controller must be replaced
Pilotregler SAVD

Instructions PCVD, PCVSAD
© Danfoss | 2016.05 | 13
VI.JA.C3.5B
2
1
3
4
SW 46
5
g
rease
Cone
5
Tu rn
actuator
to the left
1
3
4
SW 46
9 Replacement of Valve,
Actuator, Trim
9.1 Dismounting and Mounting Actuator and
Valve of the Valve Unit
Note:
The springs 1in the actuator are pre-stressed.
Therefore, the actuator must be pushed upwards
to be dismounted. You need a second person to
do this.
Valve unit DN 100 –125
Valve unit DN 150–250
Valve stem 3and the stem of the actuator 4are
not screwed to eachother.
Dismounting
1. Dismount impulse tubes.
2. Support actuator below or by a second
person as the springs 1are pre-stressed.
3. Loosen union nut 2.
4. Remove actuator.
Prior to assembly check cone 5 !
1. Clean cone prior to mounting.
2. Check O rings for damages, in case of
damages, replace cone (see Spare Parts).
3. Grease cone with high-performance fitting
component: BARRIERTA L55/3 HV
(see Spare Parts).
Mounting
1. Place actuator at the valve and push upwards.
2. Screw on union nut 2.
3. Align actuator, observe position of impulse
tube connections.
4. Tighten union nut 1, max. torque 100 Nm.
The stem of the actuator 4is screwed into the
valve stem 3.
Dismounting
1. Dismount impulse tubes.
2. Completely loosen union nut 1.
The actuator hangs on the screwed-in stem 4.
The actuator weights approx.
20 kg. In addition, an internal
spring package is pre-stressed.
Secure against dropping down
before unscrewing.
3. Screw the stem of the actuators 4out of the
valve stem 3by turning the actuator to the
left.
Mounting
1. Place actuator at the valve and push upward
to press the spring package in the actuator
together (second person necessary).
2. Carefully turn actuator to the right.
By this, carefully screw in the stem of the
actuator into the valve stem to its stop.
Then, return the actuator by
approx. 1 rotation (to the left)
3. Align actuator, observe position of the control
lines connections.
4. Tighten union nut 1, torque 100 Nm.

Instructions PCVD, PCVSAD
14 | © Danfoss | 2016.05 VI.JA.C3.5B
5
6
2
3
1
4
1
9.2 Replacement of Trim Valve VFG2
The trim can be replaced by qualified personnel
up to DN 125. From DN 150 replacement should
be carried out by the Danfoss service personnel.
Removing the trim:
Valves DN 100–125
1. Dismount actuator 1(see section 9.1).
2. Unscrew hexagon head cap screw 2.
3. Remove bonnet 3.
4. Take out trim 4.
Prior to installation:
Clean sealing surfaces 5and socket 6, grease
sealing surfaces with antiseize graphite
petroleum.
Installing the trim:
Mounitng is carried out in reverse order.
Torque hexagon head cap screws 2:
DN Torque Wrench
100-125 180 Nm SW 30
9.3 Dismounting, Mounting Actuator AVD,
SAVD
Dismounting
1. Dismount impulse tubes.
2. Loosen union nut 1.
3. Remove actuator.
Mounting
1. Place actuator at the valve and align, observe
position of the impulse tube connections.
2. Screw on union nut 1and tighten, torque
100 Nm.
AVD
SAVD

Instructions PCVD, PCVSAD
© Danfoss | 2016.05 | 15
VI.JA.C3.5B
2
2
9.4 Replacement of Trim Valve AVD, SAVD
AVD DN 25 AVD DN 40
Dismounting
1. Unscrew actuator (see above).
2. Unscrew trim 2.
DN 25: with pipe tongs, wrap gum strips
around the trim
DN 40: with wrench SW 55
3. Pull out trim.
Mounting
Mounting is carried out in reverse order. Only
tighten with low torque, sealing is made with
O rings.

Instructions PCVD, PCVSAD
16 | © Danfoss | 2016.05 VI.JA.C3.5B
1 Sicherheitshinweise .....................................17
2 Bestimmungsgemäße
Verwendung .....................................................17
3 Beschreibung ...................................................18
3.1 Aufbau ..................................................................18
3.2 Wirkungsweise ..................................................18
4 Technische Daten ...........................................18
5 Lieferumfang ...................................................19
6 Montage ............................................................ 20
6.1 Vor der Montage beachten ...........................20
6.2 Einbaulage ..........................................................20
6.3 Beim Einbau beachten ....................................20
6.4 Einbau Steuerleitung .......................................20
6.5 Isolierung .............................................................20
6.6 Einbauschemas...................................................21
6.7 Montagezeichnungen,
Abmessungen ....................................................22
7 Inbetriebnahme ............................................. 24
7.1 Erforderliche(r) statischer Druck,
Druckdifferenz....................................................24
7.2 Dichtheitsprüfung, Druckprüfung .............24
7.3 Füllung der Anlage ...........................................24
7.4 Inbetriebnahme ................................................24
7.5 Ausserbetriebnahme .......................................24
7.6 Sollwerteinstellung ..........................................25
7.7 Plombierung .......................................................25
7.8 Funktionsprüfung ............................................25
8 Störungshinweise ..........................................26
8.1 Störungen, Ursachen,
Maßnahmen ........................................................26
8.2 Membranbruch beim
Antrieb SAVD.......................................................26
9 Austausch von Ventil, Antrieb,
Innengarnituren .............................................27
9.1 Antrieb des Stellgeräts
demontieren, montieren ...............................27
9.2 Austausch der Innengarnitur
Ventil VFG 2 .........................................................28
9.3 Demontage,
Montage Antrieb AVD, SAVD ........................28
9.4 Austausch der Innengarnitur
Ventil AVD, SAVD ...............................................29
Inhaltsverzeichnis

Instructions PCVD, PCVSAD
© Danfoss | 2016.05 | 17
VI.JA.C3.5B
MAINTENANCE
FREE
1 Sicherheitshinweise
2 Bestimmungsgemäße
Verwendung
Der Regler dient der Volumenstrombegrenzung
und Differenzdruckregelung von Wasser für
Heizung, Fernwärmeheizung und Kühlsysteme.
Die zulässigen Mediumstemperaturen sind je
nach Ausführung 5 - 150 °C, 5 - 200 °C.
Die technischen Daten auf den Typenschildern
sind für die Verwendung maßgebend.
Um Verletzungen an Personen
und Schäden am Gerät zu
vermeiden, ist diese Anleitung
vor der Montage unbedingt zu
beachten.
Montage, Inbetriebnahme und
Wartungsarbeiten dürfen nur von sachkundigen
und autorisierten Personen durchgeführt
werden.
Vor Montage und Wartungsarbeiten am Regler
die Anlage:
drucklos machen,
abkühlen,
entleeren und
reinigen.
Die Vorgaben des Anlagenherstellers und
Anlagenbetreibers sind zu beachten.

Instructions PCVD, PCVSAD
18 | © Danfoss | 2016.05 VI.JA.C3.5B
Pilotregler AVDDrosselelement DE
Stellgerät PCV-VFG2
Drosselventil
Drosselventil
nur bei DN150-250
Hauptleitung
Bypass
3 Beschreibung
3.2 Wirkungsweise
Die Regeleinheit besteht aus dem in der
Hauptleitung eingebauten Stellgerät PCV-VFG2
und dem im Bypass als Pilotregler angeordneten
Druckminder AVD oder Sicherheitsabsperrventil
SAVD. In der Bypassleitung ist vor dem Pilotregler
ein Drosselement eingebaut.
Als Druckminderer hält der Regler den Druck
nach der Regeleinheit entsprechend dem
eingestellten Sollwert konstant.
Als Sicherheitsabsperrventil dient der Regler
der Absicherung gegen Drucküberschreitung.
Bei einer Beschädigung der Regelmembrane
wird das Ventil durch die zweite Membrane
geschlossen.
Das Stellventil und das Pilotventil sind
druckentlastet.
Die Sollwerteinstellung des Druckes erfolgt
über die Vorspannung der Sollwertfeder des
Pilotreglers.
Das Stellgerät in der Hauptleitung ist drucklos
geschlossen. Der Pilotregler in der Bypassleitung
ist drucklos geöffnet.
3.1 Aufbau
4 Technische Daten Technische Daten siehe Typenschilder und
Datenblatt PCV.
Bei geringen Volumenströmen bleibt das Ventil
in der Hauptleitung durch die Druckfeder
im Antrieb des Stellgerätes geschlossen. Die
Druckregelung erfolgt ausschließlich über den
Pilotregler.
Erhöht sich der Volumenstrom in der
Bypassleitung, so sinkt der Druck im
Drosselelement (Venturidüse).
Dieser abgesenkte Druck wirkt über eine
Steuerleitung auf die Unterkammer des Antriebs
des Stellgerätes. Das Hauptventil wird dadurch
stoßfrei und stetig geöffnet.
Reduziert sich der Volumenstrom, so steigt der
Druck im Drosselelement an und das Hauptventil
schließt.
Diese Folgeschaltung gewährleistet eine
schwingungsfreie Betriebsweise und eine
geringe Regelabweichung über einen großen
Stellbereich.

Instructions PCVD, PCVSAD
© Danfoss | 2016.05 | 19
VI.JA.C3.5B
5 Scope of Delivery
DN 100-125
Bausatz Stellgerät PCV-VFG 2 Pilotregler AVD DN 25
AVD
Cu-Rohr Ø 6 × 1 × 1500 mm
Cu-Rohr Ø 10 × 1 × 3000 mm
Drosselelement
DN 150-250
Bausatz Stellgerät PCV-VFG 2 Pilotregler AVD DN 40
Drosselelement
Cu-Rohr Ø 6 × 1 × 1500 mm
Cu-Rohr Ø 10 × 1 × 3000 mm
SAVD
AVD SAVD

Instructions PCVD, PCVSAD
20 | © Danfoss | 2016.05 VI.JA.C3.5B
nur Heften
Schweißen
nicht
Schweißen
1
2
6 Montage 6.1 Vor der Montage beachten
Anlage vor der Montage
drucklos machen!
Achtung!
• Rohrleitungssystem reinigen
• Schmutzfänger vor dem Regler einbauen
• Absperrarmaturen vor und nach dem Regler
einbauen
6.2 Einbaulage, Einbauort
• Der Einbau ist nur in waagrechte
Rohrleitung mit nach unten hängenden
Antrieben zulässig.
6.3 Beim Einbau beachten
• Durchflussrichtung beachten
• Ausführung mit Anschweißenden
• Belastung der Ventilgehäuse und des
Drosselelementes durch die Rohrleitungen
sind nicht zulässig.
6.4 Einbau Steuerleitung
1. Siehe Einbauschema Abschnitt 6.6
2. Bei den CU-Leitungen Ø 10 × 0,8 beidseitig
Einsteckhülsen 1einfügen.
3. Richtige Lage der Schneidringe 2beachten
6.5 Isolierung
Bei Isoliermaßnahmen dürfen die
Membranantriebe nicht isoliert werden.
4. Steuerleitung in die Verschraubung bis zum
Anschlag drücken.
5. Überwurfmutter anziehen,
Anzugsmoment 40 Nm
6. Nochmals demontieren und und die Lage des
Schneidrings überprüfen