Related Manuals for YAMADA DP-Fs Series
Summary of Contents for YAMADA DP-Fs Series
- Page 1 Doc. No. NDP150M-09 MAINTENANCE MANUAL YAMADA AIR-OPERATED DOUBLE DIAPHRAGM PUMP DP-10Fs DP-20Fs...
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Page 2: Warnings And Cautions
After reading the manual, keep it in an easy-to-access place so that the user may refer to it whenever necessary. This maintenance manual describes the items required for maintenance of the Yamada DP-Fs series Diaphragm Pumps. -
Page 3: Table Of Contents
Table of Contents - Warnings and Cautions - Table of Contents 1. Principle of Operation ....................2. Maintenance and Tools 2.1 Maintenance ......................2.2 General Tools ....................... 2.3 Dedicated Tools ....................2.4 Others ........................3. Ordering Replacement parts ..................4. Ball and Valve Seats 4.1 Removal ....................... -
Page 4: Principle Of Operation
1. Principles of operation There are two diaphragms fixed to the center rod, one at each end. When compressed air is supplied to air chamber “b” (right side, see Fig.1.1), the center rod moves to the right, the material in material chamber “B”... -
Page 5: Dedicated Tools
2.3 Dedicated Tools ①Pilot valve remover (optional) ②Sleeve remover (optional) Purpose: Removing the pilot valve and cap Purpose: Removing a sleeve Part No.: 712606 Part No.: 713148 Fig.2.1 Fig.2.2 ③Ring remover (optional) Purpose: Removing a ring Part No.: 832802（for DP-10Fs） Part No.: 832803（for DP-20Fs）... -
Page 6: Ball And Valve Seats
4. Ball and Valve Seats 4.1 Removal - Remove the 8 caps (4 caps on the up and down sides respectively) from the both sides of the upright tie rod. [Fig.4.1] - Remove the 4 retainer nuts from the upper side of the upright tie rods, and then remove the reinforcement plate, out manifold, and sleeve. -
Page 7: Inspection
- Remove the O ring, valve seat, ball and valve stopper. [Fig.4.5] Fig.4.5 4.2 Inspection ■Ball Valves - Ball [Fig.4.6] Measure the outside diameter, and if it is out of the allowable range, replace the ball with a new one. Allowable range of the ball DP-10Fs Sφ14.3 - Sφ16.3 mm... -
Page 8: Valve Body Assembly And C Spool Valve Assembly
5. Valve Body Assembly and C Spool Valve Assembly 5.1 Removal ■Valve body assembly - Remove the 4 caps from the stud bolts. [Fig.5.1] - Remove the 4 retainer nuts from the valve body, and then the valve body itself. [Fig.5.1] - Use the dedicated tool ①... -
Page 9: Inspection
■ C Spool Valve Assembly - Use a flat-blade screwdriver to raise the outside of the C spring so that the outside can be opened, and remove the C spring. [Fig.5.5 and 5.6] ＜NOTE＞ - When you remove the C spring, the arm is removed also. Fig.5.5 Fig.5.6 - Use the snap ring plyer to remove the interlocking bush from... -
Page 10: Installation
- Sleeve [Fig.5.10] Measure the inside diameter, and if it is out of the allowable range, replace the sleeve with a new one. If the sleeve is cracked or damaged, replace it. Allowable range of the Sleeve φ15.80 - φ15.86 mm Fig.5.10 - O rings [Fig.5.10] If the O ring is worn out or cracked, replace it with a new one. -
Page 11: Diaphragm, Center Rod And Bush
6. Diaphragm, Center Rod and Bush 6.1 Removal - Remove the ball, valve seat, and valve stopper etc. (See Section “4.1 Removal”) - Use the dedicated tool ③ (ring remover) to loosen the both rings until the screws are removed. [Fig.6.1] - Remove the 6 caps from the both sides of the horizontal tie rods. -
Page 12: Inspection
6.2 Inspection - Diaphragm If the diaphragm is worn out or damaged, replace it. Never replace just one diaphragm. - Center rod [Fig.6.7] Measure the diameter, and if it is out of the allowable range, replace the center rod with a new one. Allowable range DP-10Fs φ15.92 - φ15.98 mm... -
Page 13: Installation
6.3 Installation For installation, see [Exploded View] on the separate sheet and install in the reverse order of disassembly. - Dab lubricant onto the wiper and install it into the pump body. [Fig.6.9] - Apply lubricant to the packing and install it into the pump body. -
Page 14: Pilot Valves, Valve Seats And Spring
7. Pilot Valves, Valve Seats and Spring 7.1 Removal - Remove the diaphragm and center rod. (See Section “6.1 Removal”) - Use the dedicated tool①(pilot valve remover) to remove the 2 seat stoppers. [Fig.7.1] - Remove the O ring, valve seat and pilot valve. [Fig.7.1] Fig.7.1 7.2 Inspection - Pilot valve assembly [Fig.7.2]... -
Page 15: Retightening Of Tie Rods
8. Retightening of Tie rods - Since the dimensions of this pump may vary according to the temperature or with the passage of time due to the characteristics of its material: resin. Therefore, check to see if any liquid material leaks at each sealed portion periodically, and retighten the parts indicated with arrow marks. - Page 16 YAMADA CORPORATION INTERNATIONAL DEPARTMENT 1-1-3, Minami-Magome,Ota ku, Tokyo, 143-8504, Japan PHONE : +81-(0)3-3777-0241 : +81-(0)3-3777-0584 E-mail : intl@yamadacorp.co.jp : www.yamadacorp.co.jp YAMADA (THAILAND) CO., LTD 41/79 Moo 6, Bangcha-long,Bangplee,Sumutprakarn10540,Thailand PHONE : +66-(0)2-130-0990 : +66-(0)2-130-0993 E-mail : sales@yamada-th.com 202009.2479 NDP150M...