Rifox RIFOmat 1277-N User manual

Operating Manual
06/2022-Di. Subject to modifications
Page 1 of 5
Breite: 170
Höhe:8,15
Oben Links
278,5 20
RIFOX - Hans Richter GmbH Spezialarmaturen Fon: [phone] - 0 Internet: www.rifox.de
Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: [phone] - 40 Email: [email protected]
Model: 1277-N / 1278-N
RIFOmat Float-Controlled Trap, Model Minox, PN 40
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 model 1277-N / 1278-N 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 dama-
ge resulting from any other usage. The user or operator bears the risk in this case. This also applies analogously to incorrect
assembly, startup, 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
1Housing
2Housing cover
3Housing gasket
4Housing screw
5Float control assembly
6Control screw
7Gasket
8Retaining screw
9Screw plug
10 Gasket
Picture 3: Model 1278-N
2
7 6
8
5
4
1
3
9
10
Picture 1: Model 1277-N
150
7
6
Picture 2: with special connection
for add. equipment

Operating Manual
Breite: 170
Höhe:8,15
Oben Links
278,5 20
RIFOX - Hans Richter GmbH Spezialarmaturen Fon: [phone] - 0 Internet: www.rifox.de
Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: [phone] - 40 Email: [email protected]
06/2022
Page 2 of 5
-Di. Subject to modifications
2.2 Operation limits of housing material (Design)
Max. operating pressure (bar g) 40 37 33 31
Max. operating temperature (°C) 100 200 300 400
2.3 Function limit of control unit
Cross section Max. line pressure in bar g
IIs 18
IIs-GD* 10
IIs-GD*max 22
IV-GD* 4
IVs 5
* GD: gastight under-level fload control for cold media
2.4 Performance
* GD: gastight under-level fload control for cold media
2.5 Function
■Due to its gravity, the condensate flows down to the deepest point, i.e. to the condensate trap housing. A rising condensate
level lifts the float and the valve is opened through the float fork / rotary valve connection. When the condensate level drops,
the valve closes.
2.6 Compensation line
■In order to get proper function, the non-condensable gas must be able to leave the housing. Due to the vertical installation,
the non-condensable gas is able to leave the housing and flows into the steam/gas chamber above it, which has the same
pressure level. If the self-venting through the pipe must be extended, the control screw (6) can be replaced by a cutting ring
screw bolt and a compensation line can be installed leading upwards.
2.7 Automatic venting
■For the steam applications, automatic venting must be provided (vent jet).
Picture 4: Diagram
Flow rate in kg/h
Pressure difference in bar (with reference to atmospheric pressure)
10
100
1.000
0,1 110
1.500
22
500
4
50

Operating Manual
06/2022-Di. Subject to modifications
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Breite: 170
Höhe:8,15
Oben Links
278,5 20
RIFOX - Hans Richter GmbH Spezialarmaturen Fon: [phone] - 0 Internet: www.rifox.de
Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: [phone] - 40 Email: [email protected]
2.8 Gastight under-level float control (only for gas applications)
■For gas applications, a gastight under-level float control is nearly
exclusively used.
■ The condensate trap must be filled with water before start-up.
The required water trap is automatically adjusted during the proper
operation. (Picture 5, Point ①) The water trap is shown as dimension X
in Picture 5.
■ The permanent presence of the minimum condensate level in the
condensate trap is a prerequisite for the complete gas tightness. When
the condensate level sinks under the cross-section (water seal does not
exist), the gas tightness is no longer guaranteed.
■ To ensure permanent gas tightness, it is required that condensate
always drops in the condensate trap. (Picture 5, Point ②) If there are
for hours or days no condensate, gas may leak through the closed valve.
■ The pressure peaks are absorbed by the condensate trap.
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 Installation
The steam trap can be flanged screwed or flanged into a pipeline between flanges.
■Remove protective caps from inlet and outlet.
■Fitting position: according to Picture 1, 2 and 3.
■To avoid downtimes, it is recommended that provision be made for a shut-off device with a bypass line both in front of and
behind the steam trap.
4 Start-Up
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 / 6 / 8 / 9) 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 Observation and control
The function’s failure can be observed either as condensate blockage or as gas/ steam leakage.
■Condensate blockage can be determined by a): loosen the control screw (6) for a quarter rotation, while no condensate
leakage should occur; and by b): a surface thermometer on the housing for steam applications (if necessary, consult with
Rifox).
■Gas / steam leakage: can be determined by an ultrasonic measuring device, and for steam applications by a surface
thermometer. In case of steam leakage, open the condensate trap according to Section 6.1. Make sure that float can be easily
moved. If necessary, disassemble and clean the float control assembly (5). If damages/ wears are detected on parts or on the
sealing surface, the complete float control assembly (5) should be replaced.
1
Min.
2
Picture 5
X: Water trap
Cross Section

Operating Manual
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Höhe:8,15
Oben Links
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RIFOX - Hans Richter GmbH Spezialarmaturen Fon: [phone] - 0 Internet: www.rifox.de
Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: [phone] - 40 Email: [email protected]
03/2022
Page 4 of 5
-Di. Subject to modifications
6 Maintenance / Inspection
6.1 Opening the condensate trap and dismantling the float control assembly
■The condensate trap must be depressurized. Shut off
the system before and after the condensate trap.
■Release any remaining pressure by loosening the
control screw (6) by only a quarter turn.
■Dismantle the steam trap from the pipeline system.
■Loosen the housing screw (4) evenly crosswise and
take off housing cover (2).
■Unscrew the retaining screw (8) and take it off.
■Screw in the install bolt for ca. 3 turns. (Picture 6)
■With a few light strokes using plastic hammer on the
front side of the install bolt to loosen the float control
assembly (5) from its conic housing seat. (Picture 6)
■Screw out the install bolt completely. Remove the float
control assembly (5). (Picture 6)
6.2 Disassembling, cleaning and assembling the float control (Picture 7)
■After removing the cotter pin (p), the rotary valve (v) can be simply pulled out to
the side.
■Clean the parts using, for example, benzine.
■Check the rotary valve (v) for wear along the sealing edge. If wear is detected, the
support body (b) and the rotary valve (v) must be replaced. A thorough leakage test
must be carried out by Rifox.
■During assembling ensure that the notch in the rotary valve (v) points to the punch
mark on the support body (b) and the cotter pin (p) is inserted and secured again
carefully.
■The float must be able to be moved up and down by hand easily.
6.3 Installing the float control assembly and assembling the condensate trap (Picture 8)
■The float control assembly (5) is inserted into the conical housing seat with the supporting body. It must be ensured that
the immersion tube is posioned vertically downwards.
■Screw in the install bolt with the washer but NOT tighten it.
■Check and reposite the float, until the float is in the mittel of the housing
(while the housing stands vertical).
■Tighten the install bolt with 35Nm. (Float control unit
will be drawn into its conical seat.)
■Screw out the install bolt. Check again whether the float is in the middle
of the cover opening.
■Screw in the Retaining screw (8). Tighten the Retaining screw (8) with 35Nm.
■Check the housing gasket (2) and replace it if it is damaged.
■Tighten the housing screw (4) 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 (5) should also be checked and cleaned according to Section 6.2.
■The dirt, which has been accumulated in the housing, can be removed away by screwing off the screw plug (additional
equipment).
■For special applications, it is advisable to install a separate upstream strainer.
bpv
Picture 7
Plastic
hammer
Install bolt Housing Float control
assembly
Picture 6
Install bolt Washer Housing Tube
Picture 8

Operating Manual
06/2022-Di. Subject to modifications
Page 5 of 5
Breite: 170
Höhe:8,15
Oben Links
278,5 20
RIFOX - Hans Richter GmbH Spezialarmaturen Fon: [phone] - 0 Internet: www.rifox.de
Bertha-von-Suttner-Str. 9 D-28207 Bremen Fax: [phone] - 40 Email: [email protected]
■The float control assembly usually needs no special maintenance. The maintenance depends primarily on the wear resis-
tance of the valve seat. See Section 6.1 and 6.2.
6.5 Tightening torque
6.6 Spare parts
Only original spare parts can be used.
1Housing: 1.4571
2Housing cover: 1.4571
3Housing gasket: PFTE-Spec. or 1.4571
4Housing screw: ISO 4762 - A4-80-M8
5Float control assembly: 1.4571
6Control screw: A4-70 - G¼“ (BSP)
7Gasket: PTFE-Spec. or 1.4571
8Retaining screw: A4-70
9Screw plug: A4-70 - G¼“ (BSP)
10 Gasket: PTFE-Spec. or 1.4571
Picture 11: Model 1278-N
2
7 6
8
5
4
1
3
9
10
Picture 9: Model 1277-N
150
7
6
Picture 10: with special connection
7 Conformity assessment
The pressure equipment is in accordance with the Pressure Equipment Directive 2014/68/EU, Article 4, subsection 3 and
therefore bears no CE mark. A detailed declaration of conformity assessment according to PED is available as separate do-
cument. Please request if necessary, if not attached.
Position Part Name
Tightening torque (Nm)
Gasket of PTFE-Spec. Gasket of 1.4571
4 Housing screw 15 18
6 Control screw / Srew plug G1/4“ 25 50
8 Retaining screw / install bolt 35
9 optional Screw plug G1/2“ 80 200