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MAINTENANCE MANUAL

YAMADA AIR-OPERATED DOUBLE DIAPHRAGM PUMP

NDP-40 series
NDP-50 series
NDP-80 series

Doc. No.

NDP 027M-39

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Содержание NDP-40 series

Страница 1: ...MAINTENANCE MANUAL YAMADA AIR OPERATED DOUBLE DIAPHRAGM PUMP NDP 40 series NDP 50 series NDP 80 series Doc No NDP 027M 39 ...

Страница 2: ...re the caution 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 ...

Страница 3: ... NDP 40 BP_ BV_ type 3 NDP 50 BP_ BV_ NDP 80 BP_ types 4 4 2 Inspection 5 4 3 Installation 5 5 Diaphragm and Center rod 5 1 Removal BA_ BS_ BF_ types 6 BP_ BV_ types 6 5 2 Inspection 7 5 3 Installation B_C B_N B_E B_V B_H B_S types 7 B_T types 8 6 Throat bearing and Pilot valve 6 1 Removal 9 6 2 Inspection 9 6 3 Installation 9 7 C Spool valve assembly 7 1 Removal 10 7 2 Inspection 11 7 3 Installat...

Страница 4: ...ition of this operation material is repeatedly taken in and discharged out 2 Tools etc 2 1 General tools Socket wrenches 13mm 17mm 19mm except with the NDP 40 BP_ BV_ 24mm BA_ BS_ BF_ Hexagonal box wrenches 5mm 6mm Small crowbars 2 B_C B_N B_E B_V Open end wrenches 17mm NDP 40 BP_ BV_ 19mm BA_ BS_ BF_ 24mm BA_ BS_ BF_ Plastic hammer 2 2 Special tools PP wrench sold separately Sleeve remover sold s...

Страница 5: ...e NDP 80 retainer bolts 1 from the out manifold and remove the out manifold Fig 4 1 Remove the ball valve seat and O ring Fig 4 2 Remove the 6 8 on the NDP 80 retainer bolts 2 from the in manifold and remove the in manifold Fig 4 1 Remove the ball valve seat and O ring Fig 4 3 ...

Страница 6: ... bolts 1 from the out manifold and remove the out manifold Fig 4 4 Remove the ball valve seat and O ring Fig 4 5 Remove the 8 retainer bolts 2 from the in manifold and remove the in manifold Fig 4 4 Remove the ball valve seat and O ring Fig 4 6 ...

Страница 7: ...nd remove the protector and out manifold Fig 4 7 Remove the ball valve guide only NDP 80 valve seat and O ring Fig 4 8 Remove the 6 8 on the NDP 80 retainer bolts 2 from the in manifold and remove the protector and in manifold Fig 4 7 Remove the ball valve guide only NDP 80 valve seat and O ring Fig 4 9 ...

Страница 8: ...0 0 181 0 453 in 4 6 11 5 mm 0 067 0 165 in 1 7 4 2 mm NDP 50 0 197 0 492 in 5 0 12 5 mm NDP 80 O ring other than PTFE If O ring is worn out or cracked replace it 4 3 Installation For installation see Exploded View on the separate sheet and install in the reverse order of disassembly Tightening torque for manifold retainer bolts BA_ BS_ BP_ BV_ NDP 40 18 ft Ibf 25 N m 15 ft Ibf 20 N m NDP 50 18 ft...

Страница 9: ...een removed remove the center disk and diaphragm Remove the diaphragm center disk and center rod from the opposite side of the main body Remove the nut on the opposite side using the double nut Fig 5 3 Remove the coned disk spring center disk and diaphragm BP_ BV_ types Remove the ball etc see 4 1 Removal BP_ BV _types Remove the 8 4 on the NDP 40 retainer bolts from the stand body and remove the ...

Страница 10: ...h clean water at room temperature Center rod Fig 5 8 Measure the diameter and if it is outside the usable range replace the rod Usable range of center rod ø0 9815 ø0 9843 in ø24 93 ø25 00 mm 5 3 Installation B_C B_N B_E B_V B_H B_S types For installation see Exploded View on the separate sheet and install in the reverse order of disassembly Apply assembly grease to the center rod and insert it int...

Страница 11: ...loded View on the separate sheet and install in the reverse order of disassembly Apply assembly grease to the center rod and insert it into the main body Keep the convex side to the outside cf Fig 5 13 Put the O rings to both sides of the diaphragm cf Fig 5 13 Tighten the center disk using the PP wrench special tool Part No 771868 for the BPT BVT type Apply proper Thread locker to the thread of ce...

Страница 12: ...e inside diameter and if it is outside the usable range replace the throat bearing Usable range of throat bearing ø0 9859 ø0 9902 in ø25 04 ø25 15 mm O ring Packing If the O ring is worn out or cracked replace it Pilot valve If the pilot valve is worn out or cracked replace it 6 3 Installation For installation see Exploded View on the separate sheet and install in the reverse order of disassembly ...

Страница 13: ...ody and remove the valve body Fig 7 1 Remove the 8 cap A and cap B retainer bolts and remove cap A and cap B Fig 7 2 Draw out the C spool valve assembly and remove the seal ring from the C spool valve assembly Remove the spring stopper Fig 7 3 Remove the sleeve using the sleeve remover special tool Part number 713180 Fig 7 4 ...

Страница 14: ...m O ring If the O ring is worn out or cracked replace it NOTE C Spool Valve Assembly must be replaced as a complete set Unable to replace individual component 7 3 Installation For installation see Exploded View on the separate sheet and install in the reverse order of disassembly Install the sleeve using the sleeve remover special tool Part No 713180 At this point apply assembly oil around the sle...

Страница 15: ...olts should be retorqued 1 Right before start up 2 There are any leaks of material on daily inspecting a pump NOTE Retighten the Out chamber and then the manifold in this order Fig 8 3 Tighten the bolts in the order shown Fig 8 4 Retain bolts for the out chamber Retain bolts for the manifold NDP 40 50 80 BP_ 26 ft Ibf 35 N m 15 ft Ibf 20 N m NDP 40 50 BV_ Retain bolts for the out chamber Retain bo...

Страница 16: ... USA PHONE 1 847 631 9200 or 1 800 990 7867 Toll Free FAX 1 847 631 9273 www yamadapump com Manufactured by YAMADA CORPORATION International Department 1 1 3 CHOME MINAMI MAGOME OHTA KU TOKYO 143 8504 JAPAN PHONE 81 0 3 3777 0241 FAX 81 0 3 3777 0584 201807 NDP027M ...

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