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Spirax Sarco APT10-2, Installation And Maintenance Instructions Manual, Page: 1 / 32

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Spirax Sarco APT10-2 Installation And Maintenance Instructions Manual Download Page 1

IM-P612-18  ST Issue 3

1

APT10-2

Automatic Pump Trap

Installation and Maintenance Instructions

IM-P612-18

ST Issue 3

6120050/3

Printed in the UK

         © Copyright 2003

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

Summary of Contents for APT10-2

Page 1: ...003 1 General safety information 2 Product information 3 Installation Closed loop steam systems only 4 Commissioning 5 Operation 6 Maintenance 7 Replacementofspares 1 Cover gasket Inlet swing check va...

Page 2: ...IM P612 18 ST Issue 3 2...

Page 3: ...oper use of tools and safety equipment must also be complied with Isolation Consider whether closing isolating valves will put any other part of the system or personnel at risk Dangers might include i...

Page 4: ...data is required 1 Installationhead available fromthebaseofthepumptraptothecentrelineoftheheatexchanger process condensate outlet m If the outlet is mounted vertically then this should be from the bas...

Page 5: ...2 18 ST Issue 3 5 Fig 1 Fig 2 Dimensions weights approximate in mm and kg Size A B C D E F G H I Weight DN20 x DN20 187 23 223 266 273 194 57 225 171 14 I B D E H G C Motive steam supply Exhaust A F O...

Page 6: ...3146 ANC 4B bracket 14 Spring pump Stainless steel BS 2056 302 S26 Gr 2 15 Split pin Stainless steel BS 1574 16 Exhaust seat Stainless steel BS 970 431S29 ASTM A276 431 17 Inlet valve and seat assemb...

Page 7: ...IM P612 18 ST Issue 3 7 Fig 3 3 1 2 4 6 21 12 17 13 20 14 11 24 18 5 25 26 16 Trap and outlet check valve mechanism 9 8 22 23 10 7 15 19...

Page 8: ...the equipment being drained The DN20 port marked OUT should be connected to the condensate return line A flow arrow indicates the correct direction of flow The DN15 port marked S steam should be conne...

Page 9: ...mesh strainer is used to prevent debris entering the pump mechanism Fig 5 Minimum installation head 0 2 m from base of pump Spirax Sarco sized lengthof pipe to act as a reservoir Recommended the reser...

Page 10: ...ng to the rate of condensate entering the APT10 2 controlling the rate of opening and closure of the trap Step 3 Fig 8 However with the APT10 2 the condensate simply fills the main chamber lifting the...

Page 11: ...the float re engages the change over linkage causing the motive inlet to close and the exhaust valve to open Step 6 Fig 11 As the pressure inside the APT10 2 equalises with the condensate inlet pressu...

Page 12: ...ed exhaust valve moves on its guide 4 Inspect the float to ensure it is undamaged Check it pivots smoothly on the pump trap lever and it is not waterlogged 5 Ensure the inlet swing check valve is free...

Page 13: ...ator 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 Note Refer to Fig 3 page 7 for component number details For...

Page 14: ...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 Note Refer to Fig 3 page 7 for component number details For custome...

Page 15: ...3 15 F Trap and outlet check valve mechanism G Inlet exhaust valve and seat kit E Float D Spring and actuator arm C Inlet check valve B Cover gasket Fig 14 B G Spares kits 12 14 24 19 17 18 19 16 10 2...

Page 16: ...e sealing areas 5 Refit the cover bolts ensuring they are sequentially tightened in opposing pairs gradually increasing torque to 63 5 N m 46 5 4 lbf ft Bolt size Socket size Tightening torque M12 x 4...

Page 17: ...IM P612 18 ST Issue 3 17 Fig 15 2 Fig 16...

Page 18: ...w the spring in the pump mechanism to bend back on itself as this may damage the coils and shorten the life of the spring 6 The swing check valve flap can now easily be withdrawn 7 Fit a new flap ensu...

Page 19: ...IM P612 18 ST Issue 3 19 Fig 17 17 Circlip 12...

Page 20: ...4 shown in Fig 18 being careful not to damage or lose the small exhaust valve compression spring 9 The spring and actuator arm can both be replaced Note There is no need to remove the spring from the...

Page 21: ...IM P612 18 ST Issue 3 21 Fig 18 Fig 19 13 13 18 Spring retaining shaft Y 18 24...

Page 22: ...The float and lever assembly can now be removed and discarded as the replacement float and lever is supplied fully assembled in the spares kit 9 Assembly is the opposite to removal Always fit new spl...

Page 23: ...5 4 lbf ft 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...

Page 24: ...iers To fit the new trap and outlet check valve mechanism 1 Disconnect all connections to the cover Remove the cover bolts using a 19 mm A F socket then carefully slide the cover assembly away from th...

Page 25: ...led refit the cover assembly to the body ensuring the gasket faces are carefully aligned and no parts of the gasket are trapped or pinched outside the sealing areas 16 Refit the cover bolts ensuring t...

Page 26: ...are removed 9 Insert the replacement steam valve assembly item 17 and exhaust valve item 16 according to Fig 23 10 Place a new metal gasket item 19 onto the threads of the seat before tightening into...

Page 27: ...IM P612 18 ST Issue 3 27 Fig 24 17 19 Circlip 20 16 Fig 23 13 18 Spring retaining shaft Y 24 3 x M8 bolts...

Page 28: ...mplifying the fitting of new parts If after assembly the mechanism does not operate correctly check all the parts are assembled and aligned as per Fig 25 23 With the mechanism fully assembled refit th...

Page 29: ...IM P612 18 ST Issue 3 29 Fig 25 13 Spring retaining shaft Y...

Page 30: ...PT10 2hasbeenthoroughlytestedbeforeitleavesthefactory Thisincludesacomprehensive functional test If the unit has failed to operate it is likely that an installation problem could exist Please check th...

Page 31: ...kages CAUSE 4 Damaged mechanism CHECK and CURE Mechanism operates as per Section 6 Replace malfunctioning part CAUSE 5 No motive steam available CHECK and CURE Steam supply to APT10 2 is available and...

Page 32: ...IM P612 18 ST Issue 3 32...

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