Spirax Sarco HP70 Series Bedienungsanleitung

IM-P071-02 CMGT Issue 3 1

HP70 Series Bimetallic Steam Trap

1. Safety information

2. General product information

3. Installation

4. Commissioning

5. Operation

6. Maintenance

7. Spare parts

8. Fault finding

Printed in GB

6232150/3

HP70 Series

Bimetallic Steam Trap

Installation and Maintenance Instructions

IM-P071-02

CMGT Issue 3

IM-P071-02 CMGT Issue 3

HP70 Series Bimetallic Steam Trap

IM-P071-02 CMGT Issue 3 3

HP70 Series Bimetallic Steam Trap

Safe operation of these products 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.

These products comply with the requirements of the Pressure Equipment Directive (PED) and all

fall within category 'SEP'.

It should be noted the product 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 water / condensate

which are in Group 2 of the above mentioned Pressure Equipment Directive. This 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.

1.5 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. Safety information

IM-P071-02 CMGT Issue 3

HP70 Series Bimetallic Steam Trap

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-P071-02 CMGT Issue 3 5

HP70 Series Bimetallic Steam Trap

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 in excess

of 450 °C (842 °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.

IM-P071-02 CMGT Issue 3

HP70 Series Bimetallic Steam Trap

2.1 General description

The Spirax Sarco HP70 bimetallic steam trap is made of forged steel, and designed for draining high pressure,

high temperature steam lines and processes.

This steam trap, which is specially designed for HP steam, has a reinforced stainless steel insert within the

body and can be repaired online.

Normally open in the event of failure, it has a retaining valve, a built-in strainer screen and an external device

for adjusting the discharge temperature of the condensate.

Standards

This product fully complies with the requirements of the Pressure Equipment Directive (PED).

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.

Fig. 1 HP70 shown

2. General product information

IM-P071-02 CMGT Issue 3 7

HP70 Series Bimetallic Steam Trap

450

80 100 120

842

2.2 Sizes and pipe connections

½", ¾" and 1" Socket weld to ANSI B 16.11 or Butt weld to ANSI B 16.25.

2.3 Pressure/temperature limits

Temperature °C

Pressure bar g

Steam saturation curve

Pressure psi g

Temperature °F

Body design condition ASTM A182 F11

PMA Maximum allowable pressure 103.4 bar g @ 50 °C (1500 psi g @ 122 °F)

TMA Maximum allowable temperature 450 °C @ 67.7 bar g (842 °F @ 982 psi g)

PMO Maximum operating pressure 70 bar g @ 425 °C (1015 psi g @ 797 °F)

TMO Maximum operating temperature 425 °C @ 70 bar g (797 °F @ 1015 psi g)

Minimum allowable temperature -14 °C (6.8 °F)

Minimum inlet pressure for satisfactory operation is: 20 bar g (290 psi g)

Minimum operating temperature 0°C (32 °F)

DPMX The backpressure for correct operation must not exceed 90% of the upstream pressure

Designed for a maximum cold hydraulic test pressure of: 156 bar g

(2263 psi g)

The product must not be used in this region.

IM-P071-02 CMGT Issue 3

HP70 Series Bimetallic Steam Trap

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 correct direction of fluid flow.

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

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

3.4 Install the steam trapping station downstream of the equipment to be drained, ensuring that it is easily

accessible for inspection and maintenance.

3.5 The steam trap may be installed in any position, except where discharge is flowing vertically upwards.

Optimum performance will be achieved if installed horizontally.

3.6 Before installing the trap, ensure all connecting pipework is clean and free of debris.

3.7 Mount the steam trap with the arrow on the body pointing in the direction of the flow of the liquid.

3.8 The steam trap can be welded onto the pipework without removing the internal components. If there

is any possibility of the line freezing, the axis of the bonnets should be installed horizontally. For

socket welded traps, observe qualified welding procedures. It is not necessary to remove the trap

internals when welding, but avoid excessive heat.

3.9 The steam trap is factory set at 45 °C below steam stauration temperature.

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).

Drain

connection Gate valve

HP series trap

Test valve

Gate valve

(Downstream valve)

Fig. 2 Recommended installation - Note: pipework to fall in the direction of flow.

0.61 metres

(24")

1 metre minimum

(3 ft)

3. Installation

IM-P071-02 CMGT Issue 3 9

HP70 Series Bimetallic Steam Trap

The Spirax Sarco HP70 is a bimetallic steam trap.

This trap operates on the basis of two opposing forces acting on the valve - an opening force created by the

valve opening spring, and a closing force resulting from the condensate temperature acting on the bimetallic

elements.

It operates with no loss of steam and automatically and quickly drains air, non-condensable gases and large

quantities of cold water on start-up.

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

any alarms or protective devices.

Note: During commissioning the valve may need resetting to take account of any backpressure

in the return line.

4. Commissioning

5. Operation

IM-P071-02 CMGT Issue 3

HP70 Series Bimetallic Steam Trap

Important note:

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

Safety note:

This trap is installed in high pressure steam lines. Personnel doing the adjustment work should

wear heavy gloves, long sleeve shirt, and other safety equipment designed to protect the wearer

(goggles, face shield, etc.) in the event of a leak.

The equipment needed to proceed with any maintenance programme is listed in Table 1.

The HP70 has an external adjustment screw, which permits the flushing of the trap seat and

the setting of the discharge temperature of the condensate in the inlet line allowing optimum

performance to be achieved.

Maintenance note:

Maintenance can be completed with the trap in the pipeline, once the safety procedures

have been observed. It is recommended that new gaskets and spares are used whenever maintenance is

undertaken. 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.

6.1 Trap seat flushing during operation

This maintenance operation should be performed once every six months.

To clean the steam trap during operation, it is advisable to close the steam inlet valve before turning

the adjustment screw, and proceed as follows: (in a closed return system, close the discharge line

and open the test valve):

-Remove the blind nut (11) and loosen the locking gland nut (6) by turning clockwise.

Note: the gland nut and adjustment screw have left hand threads.

-Using a screwdriver, loosen the adjustment screw a few turns, clockwise. This completely disengages

the valve from the valve seat (12).

-Open the steam inlet valve slightly. This causes a strong purging action, which removes any impurities

that may have been deposited in the steam trap.

-Turn the adjustment screw anticlockwise until the valve comes into contact with the valve seat (12).

Turn through a further ¼turn anticlockwise.

-Retighten the locking gland nut (6) to the recommended torque (see Table 1) in order to lock and

reduce leakage past the adjustment screw.

-Replace the blind nut (11) and gasket (10) and tighten to the recommended torque as specified in

Table 1.

-Shut the test valve and open the discharge line valve and check for leaks.

-Allow the trap to operate for several minutes and review the operation to ensure it is correct.

6. Maintenance

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