Rifox WU-1550 User manual

Model: 1550 / 1550-N
Model: 1551 / 1551-N
RIFOmat - Float Controlled Trap, PN160
1 Safety instructions
1.1 Proper use
Any improper use, intervention in the design and deviation from the design data automatically lead to termination of the
warranty. The float-controlled condensate trap is designed for the discharge of condensate from steam, compressed air and
pressure gas systems. Any other usage is not permitted. The manufacturer is not liable for damage resulting from any other
usage. The user or operator bears the risk in this case. This also applies analogously to incorrect assembly, start-up, use and
maintenance.
1.2 Warnings and symbols
■Personal risk due to escaping operating medium because of pressure, temperature and weight. Failure to comply with
these warnings results in the risk of accidents.
■Follow the instructions in this operating manual.
■The operator must ensure that this operating manual and, if necessary, other relevant documents are available on site.
■Only trained or instructed personnel may be assigned to handling this equipment.
■Any mode of operation that may impair safety must be avoided.
2 General description and usage
2.1 Design of the condensate trap
Picture 1: WU-1550
WU-1550-N
Picture 2: EF-1551
EF-1551-N
1Upper housing 8Supporting body assembly
2Gasket for Housing 9Float
3Lower housing 10 Supporting screw
4Control screw 11 Gasket
5Housing tension bolt 12 Gasket
6Screw plug 13 Gasket
7Float control assembly 14 Protecting cap
Operating Manual
RIFOX - Hans Richter GmbH Spezialarm
aturen
Bertha-von-Suttner-Str. 9 D-28207 Bremen
Fon: [phone] - 0
Fax: [phone] - 40
www.rifox.de
www.rifoxglobal.com
[email protected]
[email protected]
Breite: 170
Höhe:8,15
Oben Links
278,5 20
07/2019 -Di. Subject to modifications
Page 1 of 5

10
100
1000
0010111,0
Flow rate in kg/h
Pressure difference in bar (with reference to atmospheric pressure)
4000
10
100
1000
10000
0010111,0
Flow rate in kg/h
Pressure difference in bar (with reference to atmospheric pressure)
5000
160
2.2 Operation limits of housing material (Design)
Version P250GH: (for WU-1550, EF-1551)
Max. operating pressure (bar g) 160 148,5 133,3 110,4 95,2
Max. operating temperature (°C ) -10/20 100 200 300 400
Version 13CrMo4-5: (for WU-1550, EF-1551)
Max. operating pressure (bar g) 160 144 134 108 24
Max. operating temperature (°C ) until 300 400 450 490 550
Version 10CrMo9-10: (for WU-1550, EF-1551)
Max. operating pressure (bar g) 160 148 140 125 34
Max. operating temperature (°C ) until 300 400 450 470 550
Version 1.4571: (for WU-1550-N, EF-1551-N)
Max. operating pressure (bar g) 160 149 133 124
Max. operating temperature (°C ) 100 200 300 400
2.3 Function limit of control units (for all four versions)
Cross Section Max. Line Pressure (bar g)
Ia 85
Ib 80
Ic 65
III 40
IV 35
2.4 Performance (for all four versions)
2.5 Function / venting / gas compensation
■ Due to the gravity the condensate flows downwards to the lowest point, which is the condensate trap housing. In the
lowest position of the float the outlet cross-section is close. Rising of the liquid level lifts the float and opens the outlet.
Condensate will be discharged through the upturned immersion tube. Decreasing condensate level closes the outlet again.
■In the case of steam applications, automatic venting must be provided (vent jet).
■To get the proper function of the float control assembly in applications of pressure gases, the gases in the condensate
trap housing must be led into the gas chamber with the same operating pressure above the condensate trap (pressure
compensation). For this purpose the control screw (4) in models 1550 and 1550-N can be replaced by a cutting ring union
and a compensating line leading upward can be installed. The pressure compensation for the models 1551 and 1551-N is
not strongly recommended.
■In the case of pressure gases applications, a gastight under-level float control is nearly exclusively used (if necessary,
consult Rifox)
Picture 3 Picture 4
for Model 1550/1551 for Model 1550-N/1551-N
For the cold condensate the discharge capacity is
higher because of medium temperature and density.
For the hot condensate the discharge capacity is
lower because of medium temperature and density.
Operating Manual
RIFOX - Hans Richter GmbH Spezialarmaturen
Bertha-von-Suttner-Str. 9 D-28207 Bremen
Fon: [phone] - 0
Fax: [phone] - 40
www.rifox.de
www.rifoxglobal.com
[email protected]
[email protected]
Breite: 170
Höhe:8,15
Oben Links
278,5 20
07/2019
Page 2 of 5
-Di. Subject to modifications

3 Assembly
The condensate trap has to be screwed into a pipeline between flanges.
■Remove the flange transport caps from inlet and outlet.
■Fitting direction: according to Picture 1 and 2.
■Supporting brackets: The weight of the condensate trap must be taken up by a holding device and support, e.g. via the
retaining brackets welded onto the housing. The steam trap weight from 68 to 76 kg, depending on the connection sizes.
■To avoid downtimes, it is recommended to install stop valves with bypass to pipeline, both in front of and behind the con-
densate trap.
4 Start-Up
Shut off the float-controlled condensat trap on both sides during the strength tests, because the control unit is not suitable
for the design test pressure according to the nameplate.
The pressure build-up and heating-up of the housing should not take place abruptly. If leakage is detected after the first
inspection, the screws (4 / 5 / 6 / 10) can be fixed under consideration of the given torque moments, as given in Section 6.5.
The screws can only be tightened on when the housing is unpressurized and T<50°C.
5 Monitoring and checking
5.1 Function‘s failures
The function’s failures can be observed either as condensate blockage or as steam / gas leakage.
■Condensate blockage can be determined:
a) with the control screw (4): loosen the control screw (4) by only a quarter turn. If condensate escapes, condensate blockage
exists. Or,
b) only in steam applications: with a surface thermometer to check the housing temperatur before the inlet. If under cooling
is detected, there is condensate blockage. (if necessary, consult with Rifox).
■Gas leakage can be determined with an RIFOX-ultrasonic measuring device.
■Steam leakage (near saturated steam temperatur) can be determined with an surface thermometer on the housing outlet.
■Check the float control assembly according to section 6.2 and replace if required (if necessary, consult Rifox).
5.2 Submerged gastight control unit
■ For submerged gastight control unit: Gas leakage can be visually determined by connecting the trap outlet with a filled
condensate tank.
■ To get the absolute gas tightness, it is required that there must be permanently minimal condensate level in the conden-
sate trap. The condensate trap must be filled with water before start-up.
■ To ensure durable gas tightness, it is required that the condensate is continually gathered into the steam trap. If there is
no condensate be gathered in hours or days, the gas may leak, although the rotary slide ventil is closed.
■ If the condensate level drops under the rotary slide valve, the gas tightness is no longer guaranteed.
6 Maintenance / Inspection
6.1 Opening the steam trap and dismantling the float control assembly
■The condensate trap must be depressurized. Shut off the system securely in front of and behind of the condensate trap.
■Release any remaining pressure in the housing by loosening the control screw (4) by only a quarter turn.
■The condensate trap must not be dismantled from the pipeline system.
■Loosen the housing tension bolts (5) evenly crosswise. Put down the lower housing (3).
■Loosen the protecting cap (14) and put it down.
■Loosen the supporting screw (10) by 1 to 2 turns.
■With a few light strokes using plastic hammer on the front side of the supporting screw (10) to loosen the float control
assembly (7) from its conic housing seat.
■Screw out the supporting screw (10) and take out the float control assembly (7).
Operating Manual
RIFOX - Hans Richter GmbH Spezialarmaturen
Bertha-von-Suttner-Str. 9 D-28207 Bremen
Fon: [phone] - 0
Fax: [phone] - 40
www.rifox.de
www.rifoxglobal.com
[email protected]
[email protected]
Breite: 170
Höhe:8,15
Oben Links
278,5 20
07/2019 -Di. Subject to modifications
Page 3 of 5

6.2 Disassembling, cleaning, checking and assembling the float control
assembly (Picture 5)
■After removing the cotter pin (p), the rotary slide valve (v) can be simply
pulled out to the side.
■Clean the parts using, for example, benzine.
■Check the rotary slide valve (v) for wear along the sealing edge. If wear is
detected, the support body (b) and the rotary slide valve (v) must be replaced
together.
■During assembly ensure that the notch on the rotary slide valve (v) points
to the punch mark on the support body (b) and the cotter pin (p) is inserted
and secured again carefully.
■It must be able to move the float up and down easily by hand.
6.3 Install the float control assembly and assemble the steam trap
■The float control assembly (7) is inserted into the conical housing seat with the support body. It must be ensured that the
tube is positioned vertically downwards.
■Screw in the supporting screw (10) with its gasket (11), tighten it with a standard ring wrench. Tightening torque according
to Section 6.5.
■Screw in the protecting cap (14) and tighten it.
■Check the housing gasket (2), replace it it is damaged.
■Put on the lower housing (3). Tighten the housing tension bolts (5) evenly crosswise. Tightening torque according to Section
6.5.
6.4 Care and maintenance
■In the case of a great risk of dirt accumulation, the housing, when it is depressurized, should be rinsed thoroughly from
time to time. If necessary, the float control assembly (7) should also be checked according to Section 6.2.
■The dirt, which has been accumulated in the housing, can be removed away by screwing off the screw plug (6).
■For special applications, it is advisable to install a separate upstream strainer.
■The float control assembly (7) usually does not to be special maintained. To inspect the float control assembly at intervals
ensures the smooth operation and save the resources. See Section 6.1 and 6.2.
6.5 Tightening torque
Position Part Name Tightening Torque
4 Control screw For gasket from soft iron: 25 Nm
For gasket from 1.4571: 20 Nm
5 Housing tension bolt 70 Nm
6 Screw plug For gasket from soft iron: 80 Nm
For gasket from 1.4571: 30 Nm
10 Supporting screw 25 Nm
bpv
Picture 5
Operating Manual
RIFOX - Hans Richter GmbH Spezialarmaturen
Bertha-von-Suttner-Str. 9 D-28207 Bremen
Fon: [phone] - 0
Fax: [phone] - 40
www.rifox.de
www.rifoxglobal.com
[email protected]
[email protected]
Breite: 170
Höhe:8,15
Oben Links
278,5 20
07/2019
Page 4 of 5
-Di. Subject to modifications

6.6 Spare parts
Only original spare parts can be used.
Version P250GH Version 13CrMo4-5 Version 10CrMo9-10 Version 1.4571
1Upper housing P250GH 13CrMo4-5 10CrMo9-10 1.4571
2Gasket for Housing 1.4571 1.4571 1.4571 1.4571
3Lower housing P250GH 13CrMo4-5 10CrMo9-10 1.4571
4Control screw 1.4571 1.4571 1.4571 1.4571
5Housing tension bolt 21CrMoV5-7 21CrMoV5-7 21CrMoV5-7 A4-70 / A4
6Screw plug 1.4571 1.4571 1.4571 1.4571
7Float control assembly
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4571
8Supporting body assembly
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4571
9Float 1.4571 1.4571 1.4571 1.4571
10 Supporting screw 1.4571 1.4571 1.4571 1.4571
11 Gasket 1.4571 1.4571 1.4571 1.4571
12 Gasket Soft iron 1.4571 1.4571 1.4571
13 Gasket Soft iron 1.4571 1.4571 1.4571
14 Protecting cap 1.4571 1.4571 1.4571 1.4571
Picture 6: WU-1550
WU-1550-N
Picture 7: EF-1551
EF-1551-N
7 Conformity assessment
The pressure equipments 1550 / 1550-N / 1551 / 1551-N are in accordance with the Pressure Vessel Directive 2014/68/EU.
The conformity is verified through the identifying mark: CE0525.
A detailed declaration of conformity assessment according to PED is available as separate document. Please request if
necessary, if not attached.
Model 1550/1551 in 13CrMo4-5 or 10CrMo9-10 is not applicable for media of fluid group 1.
Operating Manual
RIFOX - Hans Richter GmbH Spezialarm
aturen
Bertha-von-Suttner-Str. 9 D-28207 Bremen
Fon: [phone] - 0
Fax: [phone] - 40
www.rifox.de
www.rifoxglobal.com
[email protected]
[email protected]
Breite: 170
Höhe:8,15
Oben Links
278,5 20
07/2019 -Di. Subject to modifications
Page 5 of 5