Framo Cargo Pump 1000-0131-4

No. 1000-0131-4Jan-1999Framo

Cargo Pumps SD125-5/SD150-5

Instruction for Maintenance and Repair

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Framo Cargo Pump SD125-5 / SD150-5 Instruction for maintenance and repair

CONTENTS Reference to associated instructions:

Page

1.0 Sectional drawing of pump unit 2 1375-0027-4 Service manual STC-valve 1.1 Technical data SD125-5 3 0290-0036-4 Installation of mechanical oil seal 1.2 Technical data SD150-5 4 1000-0121-4 Service Manual for cargo pumps 2.0 Maintenance instruction 5 2.1 Dismantling of impeller/ wear rings 5 2.2 Dismantling of lip seal arrangement 8 2.3 Draining of pump 11 2.4 Dismantling of mechanical oil seal 14 2.5 Replacing the hydraulic motor 17 2.6 Dismantling of bearing housing 18 2.7 Assembling sequence 19 2.8 Pressure test of pump 22 1.0 SECTIONAL DRAWING

Fig. 01

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1.1 Technical data SD125-5

PUMP TYPE: SD 125-5D*-HH***-***-* DISCHARGE FLANGE CONNECTION: DN 125 PN 25 DIN2634 HYDRAULIC CONNECTIONS: PRESSURE: DN 30 PN320 FRAMO

RETURN: DN 40 PN16 FRAMO PILOT: DN15 PN320 FRAMO

AIR / INERT GAS CONNECTION: FOR PURGING OF COFFERDAM: FRAMO QUICK COUPLING

MAX. CONSUMPTION, 10M PUMP 0.3 NM3 FOR PURGING OF CARGOPIPE, PUMP: FRAMO QUICK COUPLING MAX. CONSUMPTION, 10M PUMP: 1.0 NM3

HYDRAULIC OIL VOLUME IN 10M PUMP: 50 LITRE RECOMMENDED HYDRAULIC OILS: SEE FRAMO LUBRICATION CHART DESIGN PRESSURE: CARGO 25 BAR HIGH PRESSURE, HYDRAULIC: 320 BAR RETURN PRESSURE, HYDRAULIC: 16 BAR COFFERDAM: 10 BAR WEIGHT OF PUMP AND PUMP PARTS: PUMP COMPLETE: 10M: 520 KG PUMP CASING: 320 KG PUMP HEAD COMPLETE (without motor): 130 KG BEARING HOUSING COMPLETE: 62 KG HYDR. MOTOR, max. weight: 23 KG VOLUTE CASING: 30 KG IMPELLER: 10 KG

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1.2 Technical data SD150-5

PUMP TYPE: SD 150-5D*-HH***-***-* DISCHARGE FLANGE CONNECTION: DN 150 PN 25 DIN2634 HYDRAULIC CONNECTIONS: PRESSURE: DN 30 PN 320 FRAMO

RETURN: DN 40 PN 16 FRAMO PILOT: DN 15 PN 320 FRAMO

AIR / INERT GAS CONNECTION: FOR PURGING OF COFFERDAM: FRAMO QUICK COUPLING

MAX. CONSUMPTION, 10M PUMP 0.3 NM3 FOR PURGING OF CARGOPIPE, PUMP: FRAMO QUICK COUPLING MAX. CONSUMPTION, 10M PUMP: 1.5 NM3

HYDRAULIC OIL VOLUME IN 10M PUMP: 50 LITRE RECOMMENDED HYDRAULIC OILS: SEE FRAMO LUBRICATION CHART DESIGN PRESSURE: CARGO 25 BAR HIGH PRESSURE, HYDRAULIC: 320 BAR RETURN PRESSURE, HYDRAULIC: 16 BAR COFFERDAM: 10 BAR WEIGHT OF PUMP AND PUMP PARTS: PUMP COMPLETE: 10M: 580 KG PUMP CASING: 350 KG PUMP UNIT COMPLETE (without motor): 140 KG BEARING HOUSING COMPLETE: 63 KG HYDR. MOTOR, max. weight: 32 KG VOLUTE CASING: 40 KG IMPELLER: 10 KG

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2.0 MAINTENANCE INSTRUCTION Before doing service on pump read the Service Manual for Cargo Pumps, Chapter 3, Maintenance information. 2.1 Dismantling of impeller / wear rings

Standard tools Special tool

Name Name

Allen key 10 mm Threaded bolt M12 x 100

Spanner 13 mm Hexagon nut M2, 2 pcs

Spanner 16 mm Washer 12, 2 pcs.

Spanner 17 mm Anti rotating tool for impeller hub (for assembling)

Spanner 18 mm

Spanner 19 mm

Spanner 24 mm

Plastic hammer

Slides

NB! Before doing service on pump,

always close the hydraulic pressure inlet valve, and purge cofferdam.(See Purging Routine) Loosen the pump support. Lift and secure the support to pipe stack.

Fig. 02

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Dismantle upper wear ring support. Loosen bolts for impeller hub two turns. Knock carefully on (or press down) all bolts. When impeller is loose remove all bolts. Remove bolts between volute casing and cargo leg. Replace one bolt between volute casing and pump unit diagonal on each side of the pump with lifting bolts(M12x100). Remove remaining bolts between volute casing and pump unit. Lower volute casing, suction cover, impeller and wear ring in one piece.

Fig. 03 Slide/lift volute casing together with impeller and suction cover out of well (fig.04). To avoid damage on suction well coating, volute casing must be placed upon slide. Wear rings can now be replaced. Suction cover and impeller can now be dismantled from the volute casing.

Fig. 04

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Exploded view of wear rings/impeller/volute casing.

Fig. 05

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2.2 Dismantling of lip seal arrangement Standard tools Special tools

Name Name

Allen key 6 mm Extractor for impeller hub

Allen key 10 mm Assembling cylinder

Spanner 10 mm

Spanner 13 mm

Spanner 18 mm

Spanner 19 mm

Spanner 24 mm

Snap ring plier A2

Loosen lock washer and remove impeller hub bolt. Impeller hub is pulled out by using extractor. Be very careful not to damage o-rings and ceramic sleeve. Dismantle lower part of cofferdam check pipe.

Fig. 06

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Install assembling cylinder to keep ceramic sleeve in place. See fig. 07. Dismantle seal ring housing. Use bolts for seal ring housing as extractor bolts if necessary.

Fig. 07 Dismantle support rings. Ceramic sleeve, Framo double cargo seal and single cofferdam seal is to be checked, and if necessary changed. NB! The ceramic sleeve must be handled very carefully as it is very brittle and may crack if

dropped.

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Exploded view of lip seal arrangement.

Fig.08

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2.3 Dismantling of mechanical oil seal

Standard tools Special tools

Name Name

Allen key 6 mm Extractor for impeller

Extractor for sleeve (to be used with extractor for impeller)

Assembling cylinder (for protection)

Assembling tool (for mech. oil seal)

Allen key 10 mm

Spanner 18 mm

Spanner 19 mm

Snap ring plier A2

Bolt stud M12x 100, 2 pcs

Hexagon nut M12, 2 pcs

Washer 12, 2 pcs

Remove the bearing housing from the pump casing. Use extractor bolts M12.

Fig. 09

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Remove upper seal ring housing. Remove stationary part of mechanical seal.

Fig. 10

Pull out rotating part of mechanical seal by use of assembling tool.

Fig. 11

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Exploded view of mechanical oil seal.

Fig.12

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2.4 Dismantling of bearing housing


Name Name

Snap Ring Plier J4 Extractor for impeller hub

Snap Ring Plier A3 Extractor for sleeve (to be used with extractor for impeller hub)

Pull out the shaft, ball-bearing, rotating part of back-stop unit, and roller bearing as a unit.

Fig. 13 If the back-stop unit or the cylindrical roller bearing is to be replaced, always change both rotating and stationary parts.

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Remove if necessary shaft sleeve for mechanical oil seal by use of extractor.

Fig. 14 Replace if necessary the complete mechanical seal, and shaft sleeve. The shaft sleeve must be heated to approximately 120°C prior to assembling. See instruction 290-036-4 for installation of mechanical oil seal.

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Exploded view of bearings.

Fig.15

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2.5 Draining of pump Before starting dismantling of hydraulic motor, check that hydraulic pressure inlet valve and valve on pilot line are closed. Open local control valve. Release all pressure chambers by using the bleed plugs in the STC-valve and non return valve. Standard tools Special tools

Name Name

Drain pump Drain tool

Fig. 16

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2.6 Dismantling of hydraulic motor


Name Name

Allen key 10 mm Snap ring plier

Spanner 17 mm Extractor for loosen hydr. motor

Spanner 18 mm Jack

Spanner 19 mm

Spanner 24 mm

Volute casing and bearing housing have to be removed. Drain the pump’s hydraulic section (ref. section 2.5). Install the jack . Remove circlips. If necessary use extractor to loosen the hydraulic motor from the high pressure pipe. Lower the hydraulic motor by using the jack.

Fig. 17

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2.7 Assembling sequence

CHECK ALL SEAL ELEMENTS, BACK-UP RINGS, SEAL ELEMENT GROOVES, AND SEAL FACES. PAY SPECIAL ATTENTION TO THE TEFLON RINGS AND BE ABSOLUTE SURE OF NO DEFORMATION NOR RADIAL GROOVES. NEVER INSTALL DAMAGED O-RINGS.

CHECK SEAL FACES ON PUMP AND BE SURE OF NO CORROSION, CRACKS, DIRT ETC.

---- USE ONLY GENUINE SPARE PARTS ---- ALL SCREWS AND NUTS HAVE TO BE ASSEMBLED WITH SPECIFIED

TORQUE. IF NO TORQUE IS SPECIFIED, USE TORQUE ACCORDING TO FOLLOWING TABLE: ACID RESISTANT BOLTS AND NUTS, QUALITY A4-80 M6 M8 M10 M12 M16 M20 9.2 Nm 22.3 Nm 44.2 Nm 76.2 Nm 190 Nm 370 Nm All bolts and nuts are to be fastened using a torque wrench, and acid resistant bolts are to be coated with "Molybdenum disculphide" (Molycote) on threads and under bolt heads / nuts prior to assembling.

All assembling has to be done in reversed way according to the dismantling sequence. PAY SPECIAL ATTENTION TO THE FOLLOWING POINTS: Hydraulic motor If a new hydaulic motor is installed, check that both drain connections are plugged with steel plugs. Check that the shaft seal is removed.

Fig. 18

Check position of hydraulic motor and motor flange according to assembly drawing. Check that circlips for assembling motor in cover is in correct position (ref. fig.17).

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Back Stop Unit Check direction of back stop unit. (Counter clockwise, seen from threaded end of the shaft.) Ball bearing Ball mounting slot pointing downwards against the back stop unit when mounting ball bearing. Mechanical Oil Seal Assemble mechanical seal according to instruction 290-36-4E. Clean seal faces with clean rags wetted with denaturated alcohol. Lip seal arrangement Use assembling cylinder to assemble ceramic sleeve. Do not remove the cylinder before all FRAMO shaft seals has been installed. When assembling lip seals be sure that support ring is tightened up until metallic contact. This to avoid screws to loosen. The spring marked with red colour on the double lip seal shall be mounted against mechanical seal.

THE CERAMIC SLEEVE MUST BE HANDLED VERY CAREFULLY AS IT IS VERY BRITTLE AND MAY CRACK IF DROPPED

Impeller Hub When assembling impeller hub, be careful not to damage o-rings. Be sure to lock the impeller hub bolt properly. Check the shaft alignment according to fig. 19. The retainer ring has to be fitted in the right position at the end of the ceramic sleeve, by using some grease.

Fig. 19 Wear Rings When mounting new wear rings be sure that support ring is tighten until metallic contact.

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Volute casing with impeller Slide volute casing and impeller into suction well. Framo seal element is to be placed on top of impeller when volute casing is in position below impeller hub. Check position of the guiding pin in flange connection between pump unit and volute casing. Lift the complete unit with 2 lifting bolts M12x100 until these bolts can be replaced with the original bolts. Assemble the bolts for impeller hub and volute casing. Tighten all bolts evenly. To avoid rotation of impeller hub use anti rotating tool (special tool list).

Fig. 20

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2.8 Pressure test of pump The cofferdam must be pressure tested by blinding off the exhaust trap vent pipe. Unscrew the complete relief valve and connect a manometer to the G1/4 connection. Connect air/nitrogen supply to the snap-on coupling on the purging connection and increase pressure to max. 3 bar. Flush all parts, connections, seals etc., which have been dismantled, with soapy water to be sure of no static leakage. Remember to remove blind plug from exhaust trap vent connection and assemble the pipe afterwards. Install the complete relief valve.

Fig. 21

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Framo Cargo Pump 1000-0131-4