Spectro pur SBE 2, SBE 3 Purge and connection block Instruction for use

Instruction for use
SBE/2 - SBE/3
9. Dimensions
Purge- and connection block for
speciality gases up to 8.0
Fig. 5: Purge and connection block SBE/2
26
56*)
30
A
projection U
C
process gas
Contents
connections
UNF 9/16-18
female (VCR-F)*)
page
1. Application
1.1 Designated use
1.2 Non designated use
1.3 Technical data
2. Safety instructions
3. Labeling
4. Installation
5. Start-up
6. Changing gas cylinder
7. Shut-Down
8. Repair and maintenance
9. Dimensions
M6
B
21
B
24
projection U
*) acc. to cylinder
valve connection
*) tube stubs on request
6x1x100
purge gas oulet
A
dimensions
B
C
41 mm
66 mm
45 mm
ND-pneumatic valve 41 mm
87 mm
52 mm
HD-pneumatic valve
102 mm 70 mm
blockvalve MV1
type
handvalve
41 mm
spectro pur
1
1
1
2
3
4
5
6
7
7
8
SBE/2
SBE/3
SBE/3
Fig. 6: Purge and connection block SBE/3
26
Fig. 1: SBE/2 - SBE/3
A
56*)
30
process gas
projection U
B
1. Application
connections
UNF 9/16-18
female (VCR-F)*)
C
M6
24
1
0
projection U
21
B
purge gas inlet
*) acc. to cylinder
valve connection
*) tube stubs on request
6x1x100
purge gas outlet
A
dimensions
B
C
handvalve
76 mm
66 mm
45 mm
ND-pneumatic valve
95 mm
87 mm
52 mm
HD-pneumatic valve
111 mm 102 mm 70 mm
blockvalve MV1
type
!
!
1.1 Designated use
Use with gas cylinders for gases or gas mixtures with corrosive or toxic
components, where the presence of atmospheic air (particularly humidity) is
harmful.
1.2 Use which is not in accordance with regulations
Do not use for liquid gases!
Do not use for unsuitable types of gas!
The system has to be used according to this operating instructions and
especially the safety instructions!
GES_SBE2-3 Edition 0906
Subject to alteration without prior notice
© Messer Cutting & Welding GmbH
-8-
-1-
1.3 Technical data
Materials:
Body:
SS 1.4404 ESU/VAR
(SS 316L remelted)
Hastelloy C276
SS 1.4404 ESU/VAR
(SS 316L remelted)
PCTFE
Ra<0,25 µm (standard)
Ra<0,18 µm (e-polished)
to atmosphere: < 1x10-9 mbar l/s He
via valve seat: < 1x10-6 mbar l/s He
Diaphragms:
Gas-wetted parts:
Valve seat seal:
Surface roughness:
optional:
Leak rate:
Pressure range:
Manual valve:
200 bar
LP-pneumatic valve:
25 bar
HP-pneumatic valve:
200 bar
cv = 0,24
Cv-value:
DN 4
Nominal size:
Gas cylinder valve connection:
• acc. to DIN 477 depending on gas type
• acc. to other standards (such as BS, AFNOR, UNI)
7. Ending operation
For long term ending operation or after maintenance work on the fitting system (opening the
system) the whole system must be flushed through, in accordance with section 5.
7.1 Short term ending operation (< 12 h)
a) Close shut-off valve at the consumer.
b)Close shut-off service gas valve.
7.2 Long term ending operation (> 12 h)
a) Close the shut-off valve at the consumer. Close the service gas shut-off valve. Close
service gas cylinder valve.
b)Open purge gas output shut-off valve (relieving pressure) and close again.
c) Turn the handle left to release the pressure on the pressure control.
(kv = 0,2)
8. Repair and maintenance
Fig. 3
Fig. 2
Cylinder valve
Cylinder
valve
Connection support
Purge block
Shut off valve
Purge gas outlet
pu
rg
e
so
ga
Process gas
utlet
Purge gas
Purge gas
outlet
Capillary tube
p r oc
sg
as
urge gas
inl
et
es
Cylinder
connection seal
p
Shut off valve
Process gas
Shut off valve
Process gas- Purge gas- purge gas inlet
inlet
outlet
Technical Data Pneumatic Actuators
Actuator pressure:
Actuator connector:
Pneumatic function:
*)
a)
PN200:
*)
b)
PN25:
Option:
*)
5-7 bar
for hose Ø 4mm
- Normally closed (NC)
- Normally closed (NC)
- Normally open (NO)
- inductive Namur-switch
fully functional under vacuum
!
!
!
8.1 General Instructions
All purge blocks and fittings are free of oil and grease and free of foreign parts and
therefore suited for spotlessly clean gas areas. When handling it is essential that contact or
contamination with oil or grease are avoided.
The total share of halogenated hydrocarbons as hydrocarbons is reduced to a minimum by
a special cleaning process.
Fittings for the ultra-trace analytics (< ppb) are available on request.
When using fittings with ECD detectors the fittings must not come into contact with or be
purged with halogen containing hydrocarbons (e.g. TRI, tetra or freon).
The function and tightness of the fitting systems must be checked regularly. If there are
faults in operation they are to be immediately taken out of operation and be taken for repair
to the appropriate Messer dealer.
Unauthorised repairs and alterations will lead to retraction of the guarantee and liability
conditions.
8.2 Materials
When using corrosive and corroding gases resistance is only available with dry gas and dry
purged fittings in the long term. Errors in handling or the use of gases which are not quite
dry can therefore easily lead to wear and tear of materials and a restriction in their working
lifespan.
We therefore advise a regular check of the fittings at suitable time intervals in accordance
with the conditions for use.
The fittings must be stored in a dry place, in order to avoid atmospheric humidity
penetration.
8.3 Repair
Repairs may only be carried out by qualified persons in authorised workshops.
Only original spare parts may be used. The materials are prepared in accordance
with the particular type of gas, so always state the type of gas.
Following repair the fittings are checked for function, tightness and cleanliness of the
surfaces which come into contact with the gases. When start-up commences again an
adequate flushing must take place (see section 5.).
If repairs are unauthorised or spare parts which are not original are used, any responsibility
for damage arising there from and the manufacturer's guarantee are cancelled.
When sending back fittings, ensure that they have been sufficiently purged and confirm
in writing that the fittings have been purged thoroughly!
2. Safety instructions
!
2.1 All identified instructions serve as special safety instructions.
2.2 These instruments adhere to State of the Art and recognised technology regulations.
2.3 Without the approval of the manufacturer no alterations or conversions should be carried
out on the instruments.
2.4 The instruments may only be serviced by qualified personal.
2.5 Inexpert handling and use which is not in accordance with regulations can cause dangers
for the user and other persons as well as damage to the equipment.
-2-
-7-
6. Changing the cylinder
For each change of the service gas cylinder the cylinder connection must be checked for
tightness. It is also recommended to replace the cylinder connection seal every time a cylinder
is replaced.
6.1
a)
b)
c)
d)
e)
f)
g)
h)
i)
let
pro
c
gas
f)
pur
g
s
es
c)
d)
e)
1.4404
Fig.4 Purge block:
out
b)
Cylinder exchange and passivation regulations for fluorine mixtures
Carry out service gas cylinder exchange in accordance with Section 6.1 up to and
including step h).
Slowly open the service gas cylinder valve and then close it again immediately. Let the
fluorine mixture stand for approx. 30 min.
Open shut-off valve purge gas output (relieving pressure) and close it again.
Repeat steps b) and c) at least once.
Slowly open the cylinder valve. Slowly open service gas shut-off valve. If necessary
readjust the pressure control.
Ready for extraction
3. Labeling
s
ga
6.2
a)
!
e
!
Changing the cylinder (for types of gas other than fluorine mixtures)
Set purging gas pressure of at least 3 bar (Medium e.g. nitrogen 5.0). Ensure that all
exhaust gas leads are connected and that the purging gas can be safely removed.
Close the shut-off valve at the consumer. Close service gas cylinder valve. Close service
gas shut-off valve. Open purging gas output shut-off valve and close it again (relieving
pressure).
Open purging gas input shut-off valve and close again after 1 sec (pressure build-up).
Open purging gas output shut-off valve and close it again (relieving pressure).
Repeat steps b) and c) at least 10 times.
Detach cylinder connection. Close the cylinder valve output of the cylinder which has
been emptied with the safety cap and screw the safety cap over the cylinder valve.
Replace the service gas cylinder and connect in accordance with Sections 5.1.1 and
5.1.2.
Check cylinder connection is tight.
Carry out steps b) and c) at least 5 times.
Slowly open the cylinder valve. Slowly open the service gas shut-off valve and start the
operating cycle.
Attention: For fluorine mixtures observe the passivation regulations in Section 6.2!
eg
as
!
2.6 Regulations to be adhered to
2.6.1 Accident prevention regulations
- BGV 1 "General Regulations"
- BGV 4 "Electrical equipment and operating material"
- BGV D1 "Welding, cutting and related processes”
- BGV D34 "Liquefied gas”
- BGV B6 "Gases"
- BGV B7 "Oxygen”
2.6.2 Laws, prescriptions, technical regulations
- Laws relating to technical working substances, (apparatus safety act, FTA) with general
management regulations, as well as indexes A and B of the GtA.
- Prescription relating to pressure containers, pressure gas containers and filling
equipment, pressure container prescription) and general management regulations as well
as appendices to the pressure container prescription.
- Technical regulations pressure gases TRG, particularly TRG 280
- Technical regulations TRR pipelines, particularly TRR 100
- Ordinance relating to electrical equipment in rooms where there is a danger of explosion
(ElexV).
- Electrical equipment which is set up in areas where there is a danger of explosion VDE
0170 / DIN 57165
- Electrical operating material for areas where there is a danger of explosion
VDE0170/DIN 57 165
- High voltage protection equipment VDE 0185/DIN 57 185
- Instructions for the inclusion of pipelines in safety measures of
high voltage equipment with a nominal voltage of up to 1000 V, VDE 0190
2.6.3 Code of practice and guidelines
- Guidelines for the avoidance of danger of explosion following electrostatic
supercharging
- Pressure equipment guidelines 97/23/EG
- Guidelines for laboratories ZH1/119
- Code of practice when handling pressure gas cylinders (DVS 0212)
- Safety data sheets relating to the current sort of gas
2.7 Smoking or open flame (e.g. candles) near your gas supply are strictly forbidden!
Danger of fire or explosion!
2.8 Do not use for temperatures under -30°C and over +60°C.
et
in l
purg
!
5.3.1 Passivation process
a)
Before passivation the whole gas-flow surface area must be purged in accordance with
Section 5.1.3 to 5.1.4 with a purging gas whose quality is at least 5.0.
b)
All shut-off valves are closed, the pressure regulator is released (by turning the handle
to the left). Open the service gas shut-off valve and turn the handle of the pressure
control approx. 1-2 turns to the right.
c)
Slowly open the service gas cylinder valve until the admission pressure control shows
10 bar and the outlet pressure gauge approx. 1-2 bar. Then close the cylinder valve
again immediately.
d)
Set the pressure control to maximum back pressure by turning the handle to the right.
e)
Slowly open the topped shut-off valves and let the fluorine mixture stand up to the
consumer (approx. 30 mins).
f)
The passivation process 5.3.1 b) to e) must be repeated at least once.
Attention: If during the passivation the place becomes warmer, the pressure control
must immediately be released and process 5.3.1 must be repeated.
5.3.2 Start-up (after the passivation process):
a)
Slowly open the service gas cylinder valve
b)
Possibly readjust the pressure control
c)
Ready for extraction
Also adhere to the passivation regulations for changing the cylinder (Section 6.2)!
2
-6-3-
1
2
3
4
5
Max. operating pressure
Material identification
Charge number
Control stamp showing material test passed
Number of the gas cylinder connections
in accordance with DIN 477:
1
W21.8 x 1/14 LH
3
Clamp clip
5
1” LH
6
W21.8 x 1/14
7
G5/8 inside
8
1”
9
G 3/4
10
W24.32 x 1/14
11
G3/8
13
G5/8 outside
14
M19 x 1.5 LH
or identification of gas cylinder
connections for the specific country
4. Installation
!
5.1.4 Service gas shut-off valve/purge block (before and after changing gas cylinder)
a) Open purge gas inlet valve (pressure build up). Close after 1 sec.
b) Open purge gas outlet valve. Let the gas escape and close the valve.
Repeat steps a) and b) at least 4-5 times.
5.1.5 Service gas shut-off valve/purge block/pressure regulator
a) Open purge gas inlet valve. Close the valve after 1 sec.
b) Open service gas valve.
c) Set the required outlet pressure by turning the hand knob of the pressure regulator
clockwise (outlet pressure will be shown n the outlet pressure gauge)
d) Open purge gas outlet valve. Let the gas escape and then close the valve.
e) Repeat steps a) to d) at least 4-5 times.
5.1.6 Service gas shut-off valve/purge block/pressure regulator /consumer (first start-up)
a) Open purge gas inlet valve. Close the valve after 1 sec.
b) Service gas valve is still open, pressure regulator is still adjusted.
c) Open shut-off valve outline of the pressure regulator.
d) Open shut-off valve outline of the consumer. Let the gas escape and then close the
valve.
e) Repeat steps a) to d) at least 4-5 times.
All shut-off valves are closed, pressure regulator is released. Check connections for
leakage while purging.
4.1 Mount the purge gas pipe onto the screw fitting on the purge gas inlet of the purge block
(see Fig. 3).
4.2 ! When using toxic or inflammable gases it must be ensured that the purge gas is diverted
in a safe manner.
4.2.1 The waste gas pipes is to be connected to the screw fitting on the purge gas output of
the purge block (see Fig. 3) and on the relief valve of the pressure control.
4.2.2 Hold the pressing screw when mounting the VCR-connections. Finger tighten the nut
with an internal thread . Then mark the nut with an internal thread and the pressing
screw. While holding the pressing screw with a wrench, further tighten the nut with a
wrench 1/8 turns, if the seal is made of stainless steal or nickel.
Caution: If the nut is overtighten, the sealing surfaces get damaged and leakages are
possible.
5. Start-up
!
!
!
Before start-up the identification should be checked (see section 3.), to ensure the purge block
and extraction fitting are suited to the envisaged purpose.
The purge block and the pressure regulator should always be only used for the type of gas,
that was named on the order e.g. a particular mixture of gases with reactive components. The
initial start-up of the fittings should also take place with this sort of gas.
Attention: When using fittings for gas mixtures with a fluorine content of up to 10% the
passivation regulations in section 5.3 are particularly to be applied! Fluorine mixtures are
very strong toxic and corrosive gases. Strong reactions can occur with surfaces areas which
have not been passivated with fluorine mixtures or linked with (atmospheric) humidity!
5.2 Operation
!
5.1 Start-up (for all sorts of gas except fluorine mixtures)
5.1.1 Before screwing on the purge block check whether the screw thread of the cylinder
valve is in perfect condition.
5.1.2 Check that the thread of the connection nut as well as the cylinder connection seal on
the purge block are in perfect condition. Screw the purge block unit by hand on the
service gas cylinder valve and tighten with a spanner, do not use a spanner extension
piece! Check and ensure that the purge gas supply pipe and purge gas drain(s) are
connected in accordance with installation instructions.
Ensure there is safe drainage of the waste gas from the purge gas output and relief valve!
5.1.3 Set the purge gas pressure at least 3 bar (medium e.g. N2 5.0)!
Close all shut-off valves like
- service gas cylinder valve
- service gas valve purge block
- purge gas inlet valve purge block
- purge gas output valve purge block
- service gas shut-off valve (with SE40)
as well as all station topped shut-off valves.
Release the pressure on the pressure regulator by turning the handle to the left.
-4-
!
To substitute the purge gas in the fittings by using process gas, repeat the pressure build
up at least 4-5 times. This is to homogenize the system.
a) Open purge gas inlet valve. Close the valve after 1 sec.
b) Open shut-off valve service gas. The pressure of the gas cylinder will be shown on
the pressure gauge of the pressure regulator.
c) Adjust the required outlet pressure on the pressure regulator. Pressure will be shown
on the pressure gauge.
d) Open shut-off valve outline of the pressure regulator. Let the gas escape and then
close the valve.
Open the shut-off valve of the gas cylinder after the last cycle of pressure build up and
begin the working process.
5.3 Passivation regulations
Fluorine mixtures are very strong toxic and corrosive gases. Strong reactions can occur
if surfaces which have not been passivated come into contact with fluorine mixtures or
are linked with (atmospheric) humidity!
Therefore purging and passivation regulations must be adhered to in the outmost
detail! It is also strongly recommended to replace the cylinder connection seal whenever
the cylinder is replaced!
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