Model: 1550 / 1550-NModel: 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 fl oat-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

1 Upper housing 8 Supporting body assembly2 Gasket for Housing 9 Float3 Lower housing 10 Supporting screw4 Control screw 11 Gasket5 Housing tension bolt 12 Gasket6 Screw plug 13 Gasket 7 Float control assembly 14 Protecting cap

Operating Manual

Breite: 170 Höhe:8,15

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RIFOX - Hans Richter GmbH Spezialarmaturen Fon: +49 (0) 421 499 75 - 0 Internet: www.rifox.de Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: +49 (0) 421 499 75 - 40 Email: contact@rifox.de 06

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10

100

1000

0010111,0Flow

rate

in k

g/h

Pressure difference in bar (with reference to atmospheric pressure)

4000

10

100

1000

10000

0010111,0

Flow

rate

in k

g/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 95,2Max. 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 24Max. 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 34Max. 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 124Max. 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 85Ib 80Ic 65III 40IV 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

Breite: 170 Höhe:8,15

Oben Links278,5 20

RIFOX - Hans Richter GmbH Spezialarmaturen Fon: +49 (0) 421 499 75 - 0 Internet: www.rifox.de Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: +49 (0) 421 499 75 - 40 Email: contact@rifox.de06

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2.6 Gastight under-level float control (only for gas applications

When using submerged-gastight control units, please note:

The valve orifice is always under an condensate surface.

If the gas is mixed or dissolved with the condensate, there can be no separation inside the steam trap.

Small amounts of gas can separate from the condensate at the outlet.

In these cases a degassing line at the outlet towards uncritical areas (via the roof for example) may be recommended.

A horizontal inflow can calm the condensate flow and support the self-degassing to separate the gas from the condensate.

When using an angular version (EF) condensate enters from above and can also bring gas into the housing.

With an inlet from below, the degassing happen before the trap, the automatic degassing is most effective.

Traps with submerged-gastight control units should not be used at above 90°C or its use should be clarified with RIFOX in advance.

3 AssemblyThe 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-UpShut off the housing on both sides during strength tests with PT pressure.

The float-controlled unit is only suitable up to PS pressure value or alternative PT value shown in brackets according name plate. The lower value is max. allowable pressure. A pressure test with design pressure (PT) will destroy the float.

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).

Operating Manual

Breite: 170 Höhe:8,15

Oben Links278,5 20

RIFOX - Hans Richter GmbH Spezialarmaturen Fon: +49 (0) 421 499 75 - 0 Internet: www.rifox.de Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: +49 (0) 421 499 75 - 40 Email: contact@rifox.de 06

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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).

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

b p v

Picture 5

PositionPart Name Tightening Torque

Control screwGasket material

Soft iron

Gasket material

1.45711550-N / 1551-N

4 Housing tension bolt 30 30 30

5 Screw plug 60 80 80

6 Supporting screw 50 80 9510 Tragschraube - 30* 30*14 Schutzkappe - 70 70

*Tighten the cone with a 90 Nm copper gasket in advance!

Operating Manual

Breite: 170 Höhe:8,15

Oben Links278,5 20

RIFOX - Hans Richter GmbH Spezialarmaturen Fon: +49 (0) 421 499 75 - 0 Internet: www.rifox.de Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: +49 (0) 421 499 75 - 40 Email: contact@rifox.de06

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6.6 Spare parts

Only original spare parts can be used.

Version P250GH Version 13CrMo4-5 Version 10CrMo9-10 Version 1.45711 Upper housing P250GH 13CrMo4-5 10CrMo9-10 1.45712 Gasket for Housing 1.4571 1.4571 1.4571 1.45713 Lower housing P250GH 13CrMo4-5 10CrMo9-10 1.45714 Control screw 1.4571 1.4571 1.4571 1.45715 Housing tension bolt 21CrMoV5-7 21CrMoV5-7 21CrMoV5-7 A4-70 / A46 Screw plug 1.4571 1.4571 1.4571 1.4571

7 Float control assembly1.4112/ 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 1.45711.4571

8 Supporting body assembly1.4112/ 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 1.45711.4571

9 Float 1.4571 1.4571 1.4571 1.457110 Supporting screw 1.4571 1.4571 1.4571 1.457111 Gasket 1.4571 1.4571 1.4571 1.457112 Gasket Soft iron 1.4571 1.4571 1.457113 Gasket Soft iron 1.4571 1.4571 1.457114 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 assessmentThe pressure equipments 1550 / 1550-N / 1551 / 1551-N are in accordance with the Pressure Vessel Directive 2014/68/EU. The conformity is verifi ed 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 fl uid group 1.

Operating Manual

Breite: 170 Höhe:8,15

Oben Links278,5 20

RIFOX - Hans Richter GmbH Spezialarmaturen Fon: +49 (0) 421 499 75 - 0 Internet: www.rifox.de Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: +49 (0) 421 499 75 - 40 Email: contact@rifox.de 06

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