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6120050/3
Installation and Maintenance Instructions
Printed in the UK
IM-P612-18 ST Issue 3
APT10-2
Automatic Pump Trap
1. General
safety information
2. Product information
3. Installation
• Closed loop steam systems only
4. Commissioning
5. Operation
6. Maintenance
7. Replacement of spares (1):
• Cover gasket
• Inlet swing check valve
• Spring and actuator arm
• Float
8. Replacement of spares (2):
• Trap and outlet check valve
mechanism
• Steam inlet / exhaust valves
and seats
9. Fault finding guide
IM-P612-18
ST Issue 3
© Copyright 2003
1
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Summary of Contents for Spirax Sarco APT10-2
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Page 1: Safety Information
6120050/3 IM-P612-18 ST Issue 3 APT10-2 Automatic Pump Trap Installation and Maintenance Instructions 1. General safety information 2. Product information 3. Installation • Closed loop steam systems only 4. Commissioning 5. Operation 6. Maintenance 7. Replacement of spares (1): • Cover gasket •... - Page 2 IM-P612-18 ST Issue 3...
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Page 3: General Safety Information
Ensure that any pressure is isolated and safety vented to atmospheric pressure before attempting to maintain the product, this is easily achieved by fitting Spirax Sarco depressurisation valves type DV (see separate literature for details). Do not assume that the system is depressurised even when a pressure gauge indicates zero. -
Page 4: Product Information
2. Product information Description The Spirax Sarco automatic pump trap is a displacement receiver pressure rated to PN10. The unit is capable of automatically trapping or pumping, depending on line conditions. The unit is operated by steam and is used to remove condensate from process and heating plant under all pressure conditions including vacuum. - Page 5 Dimensions / weights (approximate) in mm and kg Size Weight DN20 x DN20 Fig. 1 Motive Exhaust steam supply Fig. 2 IM-P612-18 ST Issue 3...
- Page 6 Materials No. Part Material Cover SG iron DIN 1693 GGG 40.3 / ASTM A395 Cover gasket Graphite laminated with stainless steel insert Body SG iron DIN 1693 GGG 40.3 / ASTM A395 Cover bolts Stainless steel BS EN ISO 3506 Gr. A2 70 Pump trap lever Stainless steel BS 1449 304 S15...
- Page 7 Trap and outlet check valve mechanism Fig. 3 IM-P612-18 ST Issue 3...
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Page 8: Installation
Fig. 5. Note: The APT10-2 can be secured to a level stable surface using the 2 x Ø12 mm holes drilled into the base of the cover. - Page 9 Minimum installation Strainer Condensate head 0.2 m inlet from base of pump Recommended the reservoir is installed at least 1 pipe diameter below the process outlet, but as high as possible above the APT10-2 inlet. Fig. 5 IM-P612-18 ST Issue 3...
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Page 10: Operation
Fig. 7 Motive steam inlet Step 3 (Fig. 8) However, with the APT10-2, the condensate simply fills the main chamber - lifting the float until the changeover linkage is engaged, opening the motive inlet and closing the exhaust valve. Fig. 8... - Page 11 PB exhaust valve to open. Fig. 10 Step 6 (Fig. 11) Exhaust As the pressure inside the APT10-2 equalises with the condensate inlet Condensate pressure through the open exhaust inlet PS valve, condensate re-enters via the inlet swing check valve. At the same...
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Page 12: Maintenance
3. Carefully reconnect the motive steam supply and the exhaust lines to the connections marked (S) and (E), and the condensate inlet and outlet to the connections marked (IN) and (OUT), then follow the start-up procedure in Section 4 'Commissioning' to bring the APT10-2 back into operation. -
Page 13: Spare Parts
6.5 Spare parts Available spares A Cover assembly A - G inclusive B Cover gasket See page 15 C Inlet check valve See page 15 D Spring and actuator arm See page 15 E Float See page 15 F Trap and outlet check valve mechanism See page 15 G Inlet/exhaust valves and seat kit See page 15... - Page 14 6.5 Spare parts Available spares A Cover assembly A - G inclusive B Cover gasket C Inlet check valve 2, 12 D Spring and actuator arm 2, 14, 24 E Float 2, 5, 6, 21 F Trap and outlet check valve mechanism 2, 7, 8, 9, 10, 22, 23 G Inlet /exhaust valves and seat kit 2, 16, 17, 18, 19...
- Page 15 B Cover gasket C Inlet check valve E Float D Spring and actuator arm F Trap and outlet check valve mechanism G Inlet / exhaust valve and seat kit Fig. 14 B - G Spares kits IM-P612-18 ST Issue 3...
- Page 16 6. Carefully reconnect the motive steam supply and the exhaust lines to the connections marked (S) and (E), and the condensate inlet and outlet to the connections marked (IN) and (OUT). The APT10-2 is now ready to recommission. IM-P612-18 ST Issue 3...
- Page 17 Fig. 15 Fig. 16 IM-P612-18 ST Issue 3...
- Page 18 13. Carefully reconnect the motive steam supply and the exhaust lines to the connections marked (S) and (E), and the condensate inlet and outlet to the connections marked (IN) and (OUT). The APT10-2 is now ready to recommission. IM-P612-18 ST Issue 3...
- Page 19 Circlip Fig. 17 IM-P612-18 ST Issue 3...
- Page 20 16. Carefully reconnect the motive steam supply and the exhaust lines to the connections marked (S) and (E) and the condensate inlet and outlet to the connections marked (IN) and (OUT). The APT10-2 is now ready to recommission. IM-P612-18 ST Issue 3...
- Page 21 Spring retaining shaft (Y) Fig. 18 Fig. 19 IM-P612-18 ST Issue 3...
- Page 22 7.4 Replacement of float Please ensure the safety recommendations are observed before commencing with any maintenance of this product. Tools required 19 mm A / F socket, 13 mm A / F socket, Flat blade screw driver, Torque wrench, Long nose pliers To replace the float and lever 1.
- Page 23 14. Carefully reconnect the motive steam supply and the exhaust lines to the connections marked (S) and (E) and the condensate inlet and outlet to the connections marked (IN) and (OUT). The APT10-2 is now ready to recommission. Fig. 20...
- Page 24 8. Replacement of spares (2) Section 8. covers the replacement of the following spares:- trap and outlet check valve mechanism and steam inlet /exhaust valves and seats. Important - safety note Before any installation or maintenance procedure, ensure that all steam or condensate lines are isolated.
- Page 25 17. Carefully reconnect the motive steam supply and the exhaust lines to the connections marked (S) and (E), and the condensate inlet and outlet to the connections marked (IN) and (OUT). The APT10-2 is now ready to recommission. Trap pivot...
- Page 26 8.2 Replacement of steam inlet / exhaust valves and seats Please ensure the safety recommendations are observed before commencing with any maintenance of this product. Tools required 13 mm, 19 mm A /F sockets, 24 mm Deep series A / F socket , Flat blade screw driver, Torque wrench, Long nose pliers To replace the steam inlet and exhaust valve and seats 1.
- Page 27 Circlip (3 x M8 bolts) Fig. 23 Spring retaining shaft (Y) Fig. 24 IM-P612-18 ST Issue 3...
- Page 28 25. Carefully reconnect the motive steam supply and the exhaust lines to the connections marked (S) and (E) and the condensate inlet and outlet to the connections marked (IN) and (OUT). The APT10-2 is now ready to recommission. IM-P612-18 ST Issue 3...
- Page 29 Spring retaining shaft (Y) Fig. 25 IM-P612-18 ST Issue 3...
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Page 30: Fault Finding Guide
Always handle with care. The APT10-2 has been thoroughly tested before it leaves the factory. This includes a comprehensive functional test. If the unit has failed to operate it is likely that an installation problem could exist. - Page 31 Section 8. CAUSE 7 Broken spring. CHECK and CURE If APT10-2 body is cold, this indicates the APT10's mechanism is stuck on the filling cycle. Check pump mechanism spring - replace malfunctioning part as per Section 7. CAUSE 8 Blocked condensate inlet line.
- Page 32 IM-P612-18 ST Issue 3...
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