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IM-P612-18 ST Issue 3

APT10-2

Automatic Pump Trap

Installation and Maintenance Instructions

IM-P612-18

ST Issue 3

6120050/3

Printed in the UK

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

Содержание APT10-2

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

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

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

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

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