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MAINTENANCE MANUAL

YAMADA AIR-OPERATED DOUBLE DIAPHRAGM PUMP

NDP-5
NDP-15

Doc. No. NDP 183M-09

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Содержание NDP-15 series

Страница 1: ...MAINTENANCE MANUAL YAMADA AIR OPERATED DOUBLE DIAPHRAGM PUMP NDP 5 NDP 15 Doc No NDP 183M 09 ...

Страница 2: ...aution described and operate the product in an improper manner there is danger of personal injury or property damage Furthermore to indicate the type of danger and damage the following symbols are also used along with those mentioned above This symbol indicates a DON T and will be accompanied by an explanation on something you must not do This symbol indicates a DO and will be accompanied by instr...

Страница 3: ... 2 Inspection Ball valve types 4 Flat valve types 4 4 3 Installation 4 5 Diaphragm and Center rod 5 1 Removal FAT FST BA BS BPS types 5 FP FV FDT types 6 5 2 Inspection 6 5 3 Installation B H B S FPH FPS types 7 B C B N B T FPC FPN F T types 7 6 Pilot valve Assembly Guide and Bushing 6 1 Removal NDP 5 8 NDP 15 8 6 2 Inspection 8 6 3 Installation 8 7 C spool valve Assembly and Sleeve Assembly 7 1 R...

Страница 4: ...ime material is sucked into material chamber B Through repetition of this operation material is repeatedly taken in and discharged out 2 Tools etc 2 1 General tools Socket wrenches 10mm NDP 5 13mm NDP 15 Open end wrenches 10mm NDP 5 13mm NDP 15 21mm NDP 15 Plyer 2 2 Special tools sold separately Cap and disk remover Sleeve remover Purpose Removing the center disk of Purpose For removing sleeves FP...

Страница 5: ...ve guide flat valve and valve seat NDP 5 Fig 4 2 Remove the O ring valve guide ball and valve seat NDP 15 Fig 4 2 Turn over the main body assembly Fig 4 3 Remove the 4 retainer bolts from the in manifold and remove the base and in manifold Fig 4 3 Remove the O ring valve seat flat valve valve guide and valve stopper NDP 5 Fig 4 4 Remove the O ring valve seat ball and valve guide NDP 15 Fig 4 4 ...

Страница 6: ... the in manifold removes NDP 5 Remove the O ring valve stopper flat valve and valve seat Fig 4 6 Turn over the main body assembly Fig 4 7 Pull out the bolt and remove the base and in manifold NDP 5 Remove the 4 retainer bolts from the in manifold and remove the base and in manifold NDP 15 Fig 4 7 Remove the O ring valve seat flat valve and valve stopper Fig 4 8 ...

Страница 7: ...ng is worn out or cracked replace it Usable range of Flat valve NDP 5 2 5 3 1 mm NDP 15 4 3 5 0 mm Valve seat Fig 4 12 Measure the dimension shown at left and if it is outside the usable range replace the seat Usable range of Valve seat NDP 5 5 8 7 1 mm NDP 15 8 2 10 0 mm O ring other than PTFE If O rings is worn out or cracked replace it 4 3 Installation For installation see Exploded View on the ...

Страница 8: ...of the center rod Fig 5 2 After the nuts on one side have been removed remove the center disk and diaphragm Remove the diaphragm center disk and center rod from the opposite side of the main body NOTE When the diaphragms are removed the main body is separated 2 pieces For easy work leave the tie rods or bolts fastened temporarily before remove the diaphragms Remove the nuts on the opposite side us...

Страница 9: ...body NOTE When the diaphragms are removed the main body is separated 2 pieces For easy work leave bolts fastened temporarily before remove the diaphragms Fix a double nut to one end of the center rod and take the diaphragm and center disk off the opposite end Fig 5 6 Be careful not to scratch or score the center rod 5 2 Inspection Diaphragm If the diaphragm is worn out or damaged replace it New re...

Страница 10: ... the bolts that balance should be equal from both side on diagonal line with even torque B C B N B T FPC FPN F T types For installation see Exploded View on the separate sheet and install in the reverse order of disassembly Apply grease to the center rod and insert it into the main body Keep the marking LIQUID to liquid end for CR NBR diaphragms Keep the convex side to the outside for PTFE diaphra...

Страница 11: ...tside the usable range replace the bushing Usable range of bushing Ø 10 1 Ø 10 3 mm Guide NDP 15 Fig 6 4 Measure the inside diameter and if it is outside the usable range replace the guide Usable range of guide Ø 14 1 Ø 14 2 mm O ring Packing If the O ring is worn out or cracked replace it Pilot valve assembly If the pilot valve is worn out or cracked replace it 6 3 Installation For installation s...

Страница 12: ...sembly If the seal ring is worn out or cracked replace C spool valve assembly Usable range of seal ring NDP 5 1 40 1 48 mm NDP 15 1 82 1 90 mm Sleeve Assembly Fig 7 5 Measure the inside diameter and if it is outside the usable range replace the sleeve assembly Usable range of Sleeve NDP 5 Ø 9 5 Ø 9 55 mm NDP 15 Ø 15 8 Ø 15 85 mm O ring If the O ring is worn out or cracked replace it NOTE C Spool V...

Страница 13: ...erial on daily inspecting a pump Retainer bolts from the out chamber Retainer bolts from the manifold NDP 5 FPT FVT FDT 7 5 N m 7 5 N m NDP 15 FP FVT FDT 12 N m 12 N m NOTE Tighten the bolts that balance should be equal from both side on diagonal line with even torque Retighten the Out chamber and then the manifold in this order Fig 8 1 ...

Страница 14: ...Manufactured by YAMADA CORPORATION INTERNATIONAL DEPARTMENT No 1 3 1 Chome Minami Magome Ohta Ku Tokyo 143 8504 Japan PHONE 81 0 3 3777 0241 FAX 81 0 3 3777 0584 201710 NDP183M ...

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