Moyno 2000 CC Service Manual - 16 Pages



2000 PUMPS

Page: 1 Date: July 2005






The first six numbers and letters identify the pumps basic design characteristics. In the first space, a number identifies the number of stages in the pumping elements. This will generally be a 1 or 2. The second position, the letter ғB, designates the pump type as being close-coupled. In the third position, a letter designates the pumpԒs drive train (con rod/gear joint/drive shaft): A One size smaller than element (175/220 only) B ֖ Same size as element C Same size as element, but larger gearbox drive flange and drive shaft size (175/220/345 only)The next three positions, always numbers, identify the pumping element in terms of theoretical gallons per 100 revolutions. The next 3 positions, always letters, describe the pump֒s materials of constructionӔ in component groups of parts. The first letter in this group identifies the material of the suction housing casting. The second letter indicates the material used in the rotating parts, i.e., the drive shaft, con rod, rotor, and other metallic parts in contact with the material being pumped. The third letter indicates the material of the stator. It identifies only the stator material and not that of the tube in which the stator is placed. The tube, a non-wetted part, is always alloy steel. The standard designation such as the CDQ used in our example would result in the following: C = Cast iron suction chamber D = Hardened alloy steel internals including drive shaft, con rod, gear joint, and rotor Q = Nitrile (NBR) stator (70 durometer hardness)The next position is a number identifying the current pump revision. This manual corresponds to Revision 3. The next three letters indicate the sealing system of the pump. The first letter identifies whether packing, a single seal, or a double seal is being used. The second and third positions indicate specific seal or packing model and type used.A typical trim code is SA1, designating the following: S = Single mechanical seal A1 = John Crane type 2100 SiC/SiC/Viton/316 The next letter indicates rotor variations. The most common designation is an A for standard size, chrome plated. Other options are available including special coatings, undersizes, and oversizes. >


The Moyno 2000 pump is a progressing cavity pump. A single helical rotor rolling eccentrically in the double-threaded helix of the stator creates the pumping action. In its revolution, the rotor forms, in conjunction with the stator, a series of sealed cavities 180 degrees apart. As the rotor turns, the cavities progress from the suction to the discharge. As one cavity diminishes, the opposing cavity increases at exactly the same rate. Thus, the sum of the two discharges is a constant volume. The result is a pulsationless, positive displacement flow. >

1-3. SCOPE

This service manual covers the installation and maintenance requirements for standard, close-coupled configuration of the Moyno 2000 pump line. Disassembly and assembly procedures are also covered in this manual. >


The pump nameplate, located on the drive adapter, contains important information relative to the operation and servicing of the pump. This information includes the direction of rotation arrow and the pump model and serial numbers. The model and serial numbers must be used when ordering spare parts. >


Pump Rotation. A rotation arrow on the nameplate indicates the direction of rotation. Standard rotation of Moyno 2000 pumps is clockwise, when viewed from the driven end of the pump. 1-6. Model Number. The pump model number is a series of numbers and letters, which identifies the pumps basic design and materials of construction. A typical model number, for example, might be 1BB065CDQ3SA1AAAC, as shown on the nameplate in Figure 1-1. Figure 1-1. Typical nameplate showing rotation arrow, model, and manufacturing serial numbers. >

Moyno 2000 CC Service Manual
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    TABLE OF CONTENTS Page 1-1. INTRODUCTION...............................................................................................................................................1...
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    Page 2 The next letter indicates whether there are any special options being used in the pump, typically this is an A for no special options. The next...
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    When packing is new, frequent minor adjustments during the first few hours of operation are recommended in order to compress and seat the packing. 1. Upon...
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    The rubber bellows will adhere to the shaft after assembly and must be replaced if removed from the shaft. 4. It is sound practice to always replace...
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    7-1. ASSEMBLY 7-2. LUBRICATION DURING ASSEMBLY 1. Gear Joints. Both gear joints should be packed with lubricant during assembly (Section 7-3)....
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    Page 6 2. Gently push the stationary portion of the mechanical seal into the recess in the seal housing (140). Place the O-ring (530) on the shoulder of...
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