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Summary of Contents for YAMADA NDP-5
- Page 1 Doc. No. NDP 183M-09 MAINTENANCE MANUAL YAMADA AIR-OPERATED DOUBLE DIAPHRAGM PUMP NDP-5 NDP-15...
- Page 2 After reading this document, be sure to keep it handy for future reference. This maintenance manual covers what you should know about maintenance of the Yamada NDP-5 series and NDP-15 series Diaphragm Pumps. This edition is based on the standards for the May 2015 production run. Remember, the specifications are always subject to change;...
- Page 3 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 Removal ----------------------------------------------------------------------------- 9...
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Page 4: General Tools
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... -
Page 5: Bps Types
▪ Remove the 4 retainer bolts from the out manifold, and remove the out manifold. [Fig.4.1] ▪ Remove the O ring, valve stopper, valve 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] ▪... - Page 6 > NOTE ▪ When the retainer nuts both side of the tie rod remove, 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] ▪...
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Page 7: Installation
Measure the dimension shown at left, and if it is outside the usable range, replace the seat. If the seal ring 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 ▪... -
Page 8: Bps Types
5. Diaphragm and Center rod 5.1 Removal ■ □ □ FAT, FST, BA , BS , BPS types ▪ Remove the ball or flat valve and valve seat (see [4.1 Removal FAT, FST, BA□, BS□, BPS types]). ▪ Remove the 8 (12 on the NDP-15) retainer bolts from the out chamber, and remove the out chamber. -
Page 9: Inspection
[Fig.5.4] ▪ Remove the center disk using the cap and disk remover. (special tool: Part No. 771132). (NDP-5) [Fig.5.5] ▪ Remove the center disk from one side.(NDP-15) [Fig.5.5] ▪ After the center disk (outside) has been removed, remove the diaphragm and the center disk (inside). - Page 10 ▪ After installation of the out chambers on both sides, place the pump on a flat surface and stand the pump upright for further assembly. Tightening torque for center rod and out chamber Center rod Out chamber NDP-5 7.5 N•m NDP-15 14 N•m 12 N•m <NOTE>...
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Page 11: Inspection
▪ Draw out the pilot valve assembly. [Fig.6.2] ▪ Remove the packing, bushing and guide. [Fig.6.2] Ｆig.6.2 6.2 Inspection ▪ Bushing (NDP-5) [Fig.6.3] Measure the inside diameter, and if it is outside the usable range, replace the bushing. Usable range of bushing 10.1 ~... -
Page 12: C Spool Valve Assembly And Sleeve Assembly 7.1 Removal
If the seal ring is worn out or cracked, replace C spool valve assembly. Usable range of seal ring 1.40 ~ 1.48 mm NDP-5 1.82 ~ 1.90 mm NDP-15 ▪ Sleeve Assembly [Fig.7.5] Measure the inside diameter, and if it is outside the usable range, replace the sleeve assembly. - Page 13 (1) Right before the pump to use. (2) There are any leaks of material on daily inspecting a pump. Retainer bolts from the Retainer bolts from the out chamber manifold NDP-5 FPT, FVT, FDT 7.5 N•m 7.5 N•m □, NDP-15 12 N•m 12 N•m...
- Page 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 : +81-(0)3-3777-0584 201710 NDP183M...