Spirax Sarco TD3-3 Bedienungsanleitung

IM-P068-25 ST Issue 2 1

TD3-3

Thermodynamic Steam Trap

Installation and Maintenance Instructions

IM-P068-25

ST Issue 2

0681150/2

1. Safety information

2. General

product information

3. Installation

4. Commissioning

5. Operation

6. Maintenance

7. Spare parts

IM-P068-25 ST Issue 22

IM-P068-25 ST Issue 2 3

Safe operation of this product can only be guaranteed if it is properly installed,

commissioned, used and maintained by qualiﬁed personnel (see Section 1.11) in

compliance with the operating instructions. General installation and safety instructions

for pipeline and plant construction, as well as the proper use of tools and safety

equipment must also be complied with.

1.1 Intended use

Referring to the Installation and Maintenance Instructions, name-plate and Technical

Information Sheet, check that the product is suitable for the intended use / application.

This product complies with the requirements of the European Pressure Equipment

Directive 97 / 23 / EC and falls within category 'SEP'. It should be noted that products

within this category are required by the Directive not to carry the mark.

i) This product has been specifically designed for use on steam, air or

condensate / water, which is in Group 2 of the above mentioned Pressure

Equipment Directive. The products’ use on other fluids may be possible but,

if this is contemplated, Spirax Sarco should be contacted to conﬁrm the

suitability of the product for the application being considered.

ii) Check material suitability, pressure and temperature and their maximum and

minimum values. If the maximum operating limits of the product are lower

than those of the system in which it is being fitted, or if malfunction

of the product could result in a dangerous overpressure or overtemperature

occurrence, ensure a safety device is included in the system to prevent such

over-limit situations.

iii) Determine the correct installation situation and direction of fluid flow.

iv) Spirax Sarco products are not intended to withstand external stresses that

may be induced by any system to which they are fitted. It is the responsibility

of the installer to consider these stresses and take adequate precautions to

minimise them.

v) Remove protection covers from all connections and protective film from all

name-plates, where appropriate, before installation on steam or other high

temperature applications.

1.2 Access

Ensure safe access and if necessary a safe working platform (suitably guarded)

before attempting to work on the product. Arrange suitable lifting gear if required.

1.3 Lighting

Ensure adequate lighting, particularly where detailed or intricate work is required.

1.4 Hazardous liquids or gases in the pipeline

Consider what is in the pipeline or what may have been in the pipeline at some

previous time. Consider: flammable materials, substances hazardous to health,

extremes of temperature.

1. Safety information

IM-P068-25 ST Issue 24

1.5 Hazardous environment around the product

Consider: explosion risk areas, lack of oxygen (e.g. tanks, pits), dangerous gases,

extremes of temperature, hot surfaces, fire hazard (e.g. during welding), excessive

noise, moving machinery.

1.6 The system

Consider the effect on the complete system of the work proposed. Will any proposed

action (e.g. closing isolation valves, electrical isolation) put any other part of the

system or any personnel at risk?

Dangers might include isolation of vents or protective devices or the rendering

ineffective of controls or alarms. Ensure isolation valves are turned on and off in a

gradual way to avoid system shocks.

1.7 Pressure systems

Ensure that any pressure is isolated and safely vented to atmospheric pressure.

Consider double isolation (double block and bleed) and the locking or labelling of

closed valves. Do not assume that the system has depressurised even when the

pressure gauge indicates zero.

1.8 Temperature

Allow time for temperature to normalise after isolation to avoid danger of burns.

1.9 Tools and consumables

Before starting work ensure that you have suitable tools and/or consumables

available. Use only genuine Spirax Sarco replacement parts.

1.10 Protective clothing

Consider whether you and/or others in the vicinity require any protective clothing

to protect against the hazards of, for example, chemicals, high /low temperature,

radiation, noise, falling objects, and dangers to eyes and face.

1.11 Permits to work

All work must be carried out or be supervised by a suitably competent person.

Installation and operating personnel should be trained in the correct use of the

product according to the Installation and Maintenance Instructions.

Where a formal 'permit to work' system is in force it must be complied with.

Where there is no such system, it is recommended that a responsible person

should know what work is going on and, where necessary, arrange to have an

assistant whose primary responsibility is safety.

Post 'warning notices' if necessary.

1.12 Handling

Manual handling of large and /or heavy products may present a risk of injury.

Lifting, pushing, pulling, carrying or supporting a load by bodily force can cause

injury particularly to the back. You are advised to assess the risks taking into

account the task, the individual, the load and the working environment and use

the appropriate handling method depending on the circumstances of the work

being done.

IM-P068-25 ST Issue 2 5

1.13 Residual hazards

In normal use the external surface of the product may be very hot. If used at the

maximum permitted operating conditions the surface temperature of some products

may reach temperatures of 500°C (932°F).

Many products are not self-draining. Take due care when dismantling or removing

the product from an installation (refer to 'Maintenance instructions').

1.14 Freezing

Provision must be made to protect products which are not self-draining against

frost damage in environments where they may be exposed to temperatures below

freezing point.

1.15 Disposal

Unless otherwise stated in the Installation and Maintenance Instructions, this

product is recyclable and no ecological hazard is anticipated with its disposal

providing due care is taken.

1.16 Returning products

Customers and stockists are reminded that under EC Health, Safety and

Environment Law, when returning products to Spirax Sarco they must provide

information on any hazards and the precautions to be taken due to contamination

residues or mechanical damage which may present a health, safety or

environmental risk. This information must be provided in writing including Health

and Safety data sheets relating to any substances identiﬁed as hazardous

or potentially hazardous.

Fig. 1

IM-P068-25 ST Issue 26

2.1 General description

The TD3-3 is a medium pressure thermodynamic steam trap ﬁtted between unions for ease of

replacement. Tail pieces are prepared for butt weld ends.

Optional extras

Insulating cover To prevent the trap being unduly inﬂuenced by excessive heat loss

such as when subjected to low outside temperatures, wind, rain etc.

Integral blowdown A BDV1 or BDV2 can be ﬁtted to the strainer cap, alternatively the

valve strainer cap can be drilled, tapped and plugged " BSP or NPT.

Standards

This product fully complies with the requirements of the European Pressure Equipment

Directive 97 / 23 / EC.

Certiﬁcation

This product is available with certiﬁcation to EN 10204 3.1. Note: All certiﬁcation / inspection

requirements must be stated at the time of order placement.

Note: For addtional information see Technical Information Sheet TI-P068-04.

2.2 Sizes and pipe connections

", ½" LC, ½" and ¾" butt weld Schedule 40.

2. General product information

Fig. 1 TD3 - 3

IM-P068-25 ST Issue 2 7

The product must not be used in this region.

Pressure bar g

Temperature °C

Body design conditions PN63

PMA Maximum allowable pressure 63 bar g @ 100°C (913 psi g @ 212°F)

TMA Maximum allowable temperature 400°C @ 42 bar g (752°F @ 609 psi g)

Minimum allowable temperature 0°C (32°F)

PMO Maximum operating pressure 42 bar g @ 400°C (609 psi g @ 752°F)

for saturated steam service

TMO Maximum operating temperature 400°C @ 42 bar g (752°F @ 609 psi g)

Minimum operating temperature 0°C (32°F)

Note: For lower operating temperatures consult Spirax Sarco.

PMX Maximum differentail pressure 63 bar (913 psi)

PMOB Maximum operating backpressure should not exceed 80% of the upstream pressure

Minimum operating differential 0.25 bar (3.6 psi)

pressure for satisfactory operation

Designed for a maximum cold hydraulic test pressure of: 95 bar g (1 377 psi g)

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Steam

saturation

curve

2.3 Pressure / temperature limits (ISO 6552)

Temperature °F

Pressure psi g

IM-P068-25 ST Issue 28

After installation or maintenance ensure that the system is fully functional. Carry out tests on

any alarms or protective devices.

4. Commissioning

The thermodynamic steam trap will discharge condensate with a blast type action at a few

degrees below steam saturation temperature, due care must be given to the site of

the discharge.

5. Operation

3. Installation

Note:

Before actioning any installation observe the 'Safety information' in Section 1.

Referring to the Installation and Maintenance Instructions, name-plate and Technical

Information Sheet, check that the product is suitable for the intended installation:

3.1 Check materials, pressure and temperature and their maximum values. If the maximum

operating limit of the product is lower than that of the system in which it is being ﬁtted,

ensure that a safety device is included in the system to prevent overpressurisation.

3.2 Determine the correct installation situation and the direction of ﬂuid ﬂow.

3.3 Remove protection covers from all connections and protective film from all name-plates,

where appropriate, before installation on steam or other high temperature applications.

3.4 The trap should preferably be installed in the horizontal plane, with a small drop leg

preceding it. Suitable isolation valves must be installed to allow for safe maintenance

and trap replacement. Consideration should be given to a suitable method for testing

the correct operation of the trap. This may be a sight glass or a Spiratec system. Sight

glasses must be positioned a minimum of 1 m (3 ft) downstream of any blast-action traps.

Where the trap discharges into a closed return system, a non-return valve should be ﬁtted

downstream to prevent return ﬂow.

3.5 Welding of a steam trap - When a socket weld or butt weld TD3-3 thermodynamic

steam trap is being installed the welding should be in accordance with an approved weld

procedure of a recognised standard using approved welders.

3.6 Isolation valves must be installed to allow for safe maintenance and trap replacement.

3.7 Always open isolation valves slowly until normal operating conditions are achieved -

this will avoid system shocks. Check for leaks and correct operation.

Note: If the trap is to discharge to atmosphere ensure it is to a safe place, the discharging

ﬂuid may be at a temperature of 100°C (212°F).

IM-P068-25 ST Issue 2 9

6. Maintenance

Fig. 2

Note: Before actioning any maintenance programme observe

the 'Safety information' in Section 1.

6.1 General information:

- Before undertaking any maintenance on the trap it must be isolated from the supply line and

any pressure allowed to safely normalise to atmosphere. The trap should then be allowed to

cool.

- When reassembling make sure that the joint faces are clean.

- maintenance can be completed with the trap in the pipeline, once the safety procedures have

been observed.

- It is recommended that the new gaskets and spares are used whenever maintenance is

undertaken (see Section 7 - Spare parts).

- Ensure that the correct tools and necessary protective equipment are used at all times.

- When maintenance is complete open isolation valves slowly and check for leaks.

IM-P068-25 ST Issue 210

6.2 How to service

- Remove the insulating cover (7), if ﬁtted, and unscrew the cap (2) using a suitable spanner

or socket. Do not use stillsons or a wrench of similar type which may cause distortion of the

cap.

- If the seating faces on the body are only slightly worn, they can be refaced by lapping on a

ﬂat surface, such as a surface plate. A ﬁgure-of-eight motion and a little grinding compound,

such as 'Carborundum Co's Compound I.F.' gives the best results.

If the wear is too great to be rectiﬁed by simple lapping, the seating faces on the body must

be ground ﬂat and then lapped.

Note: the disc (3) should always be replaced with a new one. The total amount of metal

removed in this way should not exceed 0.25 mm (0.010").

- When reassembling, the disc (3) is normally placed in position with the grooved side in

contact with the body seating face (1).

- Screw on the cap (2) to the recommended tightening torque (see Table 1); no gasket

is required but a suitable high temperature anti-seize grease should be applied to the

threads.

6.3 How to clean or replace the strainer:

- Unscrew the strainer cap (5) using a suitable spanner.

- Withdraw the screen (4) and clean or, if damaged, replace with a new one.

- To reassemble, insert the screen (4) into the strainer cap (5), then screw the strainer cap into

place. A fine smear of 'Molybdenum Disulphide' grease should be applied to the first

few threads. Care should be taken to ensure that the gasket (6) and gasket faces are clean.

- Tighten to the recommended torque (see Table 1).

- When maintenance is complete open isolation valves slowly and check for leaks.

Table 1 Recommended tightening torques

Item Part Size N m lbf ft

2 Cap ", ½" LC 36 A /F 135 - 150 99.6 - 110.6

½", " LC 41 A /F 180 - 200 132.8 - 147.5

5 Strainer cap (all sizes) 32 A /F M28 170 - 190 125.4 - 140.1

" 30 A /F 80 - 90 59.0 - 66.4

9 Union nut ½",½" LC 36 A /F 150 - 165 110.6 - 121.6

" 41 A /F 150 - 165 110.6 - 121.6

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