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0670350/5
IM-S03-11
CMGT Issue 5
HM and HM34
Inverted Bucket Steam Traps
Installation and Maintenance Instructions
1. Safety information
2. General product information
3. Installation
4. Commissioning
HM Series
5. Operation
6. Maintenance
7. Spare parts
HM34 Series
HM and HM34 Inverted Bucket Steam Traps
© Copyright 2020
1
IM-S03-11 CMGT Issue 5
Printed in GB
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Related Manuals for Spirax Sarco HM Series
Summary of Contents for Spirax Sarco HM Series
- Page 1 Inverted Bucket Steam Traps Installation and Maintenance Instructions 1. Safety information 2. General product information 3. Installation 4. Commissioning HM Series 5. Operation 6. Maintenance 7. Spare parts HM34 Series HM and HM34 Inverted Bucket Steam Traps © Copyright 2020...
- Page 2 HM and HM34 Inverted Bucket Steam Traps IM-S03-11 CMGT Issue 5...
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Page 3: Safety Information
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. -
Page 4: Protective Clothing
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. -
Page 5: Residual Hazards
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. - Page 6 Prevention of water hammer Steam trapping on steam mains: 30 - 50 metre intervals Steam Trap set Steam Trap set Trap set Condensate Condensate Condensate Steam Mains - Do's and Don'ts: Flow Flow Steam Steam HM and HM34 Inverted Bucket Steam Traps IM-S03-11 CMGT Issue 5...
- Page 7 Prevention of tensile stressing Pipe misalignment: Installing products or re-assembling after maintenance: Do not over tighten. Flange bolts should be gradually tightened across Use correct torque figures. diameters to ensure even load and alignment. Thermal expansion: Guides Axial movement Short Fixing point distance Axial movement...
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Page 8: General Product Information
14 bar g (203 psi g). The Spirax Sarco HM34 series inverted bucket trap is similar to the HM Series but is manufactured in carbon steel and will operate on steam pressures up to 32 bar g (464 psi g). - Page 9 Cast steel Internals Stainless steel Stainless steel Note: For further information on materials see the following Technical Information Sheets: TI-S03-02 for the HM Series and TI-P072-01 for the HM34 Series. HM and HM34 Inverted Bucket Steam Traps IM-S03-11 CMGT Issue 5...
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Page 10: Operating Range
Designed for a maximum cold hydraulic test pressure of: 24 bar g (348 psi g) 60 bar g (870 psi g) 2.5 Operating range HM Series Steam saturation curve Pressure bar g The product must not be used in this region. - Page 11 HM34 Series Steam saturation curve 30 32* Pressure bar g The product must not be used in this region. *PMO Maximum operating pressure recommended for saturated steam 32 bar g (464 bar g). ∆ PMX - Maximum differential pressure Maximum differential pressure bar Size DN15 - ½"...
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Page 12: Installation
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. 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. - Page 13 Air vent Bypass 'HM' trap Check valve Fig. 5 Check valve 'HM' trap Fig. 6 HM and HM34 Inverted Bucket Steam Traps IM-S03-11 CMGT Issue 5...
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Page 14: Maintenance
6. Maintenance Note: Before actioning any maintenance program observe the 'Safety information' in Section 1. Warning The body/cover gasket and strainer cap gasket contain a thin stainless steel support ring which may cause physical injury if not handled and disposed of carefully. Before undertaking any maintenance on the trap it must be isolated from both the supply line and return line and any pressure allowed to safely normalise to atmosphere. -
Page 15: Recommended Tightening Torques
¾" 1" 125 - 145 (89 - 104) ½" 90 - 100 (64 - 72) ¾" HM34 1" 125 - 145 (89 - 104) Fig. 7 HM Series shown HM and HM34 Inverted Bucket Steam Traps IM-S03-11 CMGT Issue 5... -
Page 16: Spare Parts
Always order spares by using the description given in the column headed 'Available spares' and state the size and series of the trap. Example: 1 - Valve and seat assembly for DN15 HM34/7 Spirax Sarco inverted bucket steam trap. HM and HM34 Inverted Bucket Steam Traps... - Page 17 Fig. 8 HM Series shown HM and HM34 Inverted Bucket Steam Traps IM-S03-11 CMGT Issue 5...
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