Manntek SBC Original operating manual

manntek.se
SBC Service instruction
8"

2 of 7 - Version 170310
M
ATERIAL : A L , B R , SS
P ARTS NEEDED FOR SERVICE : Spare part kit and O-ring kit (see p.3)
T YPE OF CONNECTION : Threaded and Flanged couplings have the
same service instruction.
P ERFORM A SERVICE : If leaking
Every year
Change of media
P LEASE NOTE !
Make sure that you are using the right type of O-rings and seals for the
media you are using. We are using a standard silicone based grease
for standard media, for special media please contact us.

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M
AINTENANCE AND SERVICE INSTRUCTION
Always depressurise the system and rinse off the parts before beginning any
maintenance work. Use protective goggles. Do not handle O-ring seals if the
material appears charred, gummy or sticky.
Use tweezers and wear neoprene or PVC gloves. Do not touch adjacent parts with
unprotected hands. Rinse off the parts once again before starting the “daily
inspection”
D AILY INSPECTION
All couplings should be briefly inspected at the start of each day’s operation. Check for dirt,
seal damage and any obvious physical damage (such as impacts, etc.).
R EGULAR SERVICE
Regular service interval is very much depending on local regulations and application
conditions. If nothing else is specified and it is a new application with unknown parameters
we recommend to make a first service after one year and decide then depending on the
inspection result about further intervals.
The service procedure shall be as follows:
1. Exchange seals.
2. Replace worn or damaged components.
U SE ONLY ORIGINAL M ANN T EK SPARE PARTS FOR MAINTENANCE .
Spare part kit (S-N8-xx)
O-ring kit (O-N8-yy)
X means the size of the coupling according to the product catalogue. xx and yy means the
material key according to the product catalogue. You will find it also as the 7
th
to 10
th
sign in
the serial number (e.g. N8106Dxxyy).

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A FTER RELEASE
When the coupling should go into service there is a
danger that the fluid will spurt out. Special protective
measures such as personal protective equipment must
therefore be adopted. Always ensure the system is
cleaned in a proper manner. After cleaning, remove
any residue from the cleaning agent.
a. Wear suitable personal protective
equipment.
b. Make sure that the coupling is
depressurized and empty.
c. Clean the coupling before disassembly (use
cleaning agent suitable for the pumped fluid).
V ISUAL INSPECTION
Screw out the destroyed parts of the breaking bolts.
Check for dirt, seal damage and any obvious physical
damage (such as impacts, etc.).
D ISASSEMBLE
Press down the spindle steering and turn it free.
Release it carefully
Piston guide is spring loaded. Risk of
injury.
Using our special tool makes work easier and
therefore increases safety.
Repeat the same procedure with the second half.
D ETAIL PARTS AFTER DISASSEMBLING
Take out all the parts from the body
1. Spindle steering
2. Spring
3. Body
4. Piston
5. Spring cap and PTFE-bushing
1 2 3 4
5

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P
ISTON O- RING
Replace the O-ring (pos.3) on the piston with a new
greased O-ring. Have an equal pressure around the O-
ring. The O-ring must be pressed into the groove on
the piston.
Use only grease which is suitable for O-ring material.
For mounting the new O-ring use MannTek spare
parts only. Special tools are helpful for a good fit of the
O-ring.
M OUNTING PISTON
The piston is bigger in diameter than the three
brackets for the piston guide.
Introduce the piston as shown. Put it into a relaxing
position in the valve seat. Take care, the piston is
sticking out on the other side.
R EASSEMBLE COUPLING HALVES
Fit the spring with spring cap and spindle steering with
PTFE-bushing. Press down the spindle steering and
turn, to fix it in its position.
L OCKING THE SPINDLE STEERING
Fit the screws into the given holes in the body and
fixate the spindle steering by mounting the three
locking screws. Use Loctite® 243 for locking the
screws.
Mount back the flat seal.
O UTER BODY O- RING
Replace the O-ring (pos.15) on the body with a new
greased O-ring.
Use only grease which is suitable for O-ring material.
Loctite® is registered trademark of Henkel.

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B REAKING BOLTS
Screw in the bolts into the intended position.
R EASSEMBLE COUPLING
Set both halves onto each other and press them
carefully together. The breaking pins should align to
the bore holes in the second half.
Using a press makes work easier.
F IX BREAKING BOLTS
Screw on the nuts by hand until stop when halves are
pressed together. Fasten it a little bit with a wrench,
max 45 degrees.
Screw on the second nut and lock the first one. Hold
the first one with a wrench to avoid forces on the
breaking bolt.
Tool: Standard Wrench 10mm
Do not use force for tightening! Risk of
destroying bolts.
R EADY TO USE
After the coupling is completely reassembled provide a
pressure test according to test procedure on page 7.

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T
EST P ROCEDURE
After each service a pressure and tightness test of each coupling is mandatory. Test each
half separately before you connect both halves with the breaking pins. The following test
parameters are in accordance with EN12266, EN14432 and ISO5208:
Shell tightness test (water): 1,5 x Working Pressure (see 1.2) stop time 1 min.
Seat tightness test (air): 6 bar +/- 1bar stop time 15 s.
0,1 x Working Pressure stop time 15 s.
If a pressure test should be achieved for the coupling mounted in an assembly follow the
respective test instructions for the equipment but do not exceed our recommended maximum
test pressure of the coupling which you will find in the following table. If testing with higher
pressure is necessary please ask our sales department for a special test bolt kit.
Maximum Test Pressure depending on size and breaking force:
DN 100 DN 125 DN 150 DN 200 DN 250 DN 300
kN bar kN bar kN bar kN bar kN bar kN bar
18 10 28 10 40 10 72 10 113 10 163 10
24 16 37 16 54 16 96 16 151 16 217 16
28 20 45 20 65 20 99 20 156 20 224 20
36 25 56 25 81 25 115 25 181 25 260 25
92 25
48 35 75 37,5 108 37,5 154 37,5 241 37,5 347 35
52 37,5 81 37,5 117 37,5 193 37,5 302 37,5 434 37,5
Approved couplings get stamped on the piston.
Number tested: 100%
S TORAGE
Store coupling in a dry, dust free, dark place, in ambient temperature.
© Copyright 2012 Mann Teknik AB. Mann Teknik AB reserves the right to make changes at any time in
prices, materials, specifications and models and to discontinue models without notice or obligations.