moyno Version 3, Руководство по обслуживанию

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SERVICE MANUAL
MOYNO
®
2000 PUMPS
G2 Open Throat Models
G3 Bridge Breaker Models
1-1. INTRODUCTION
1-2. GENERAL
The Moyno
®
2000 Pump is the culmination of over
50 years of experience in manufacturing and marketing
fluids handling equipment. This rugged pump has
been engineered to be the most reliable product ever sold
under the Moyno name. The pump has been painstakingly
tested to assure consistent performance in the
most difficult of applications. It represents the next genera-
tion of the world’s most versatile pump.
The Moyno 2000 Pump is a progressing cavity pump. The
pumping action is created by a single helical rotor rolling
eccentrically in the double helix of the stator. The rotor in
conjunction with the stator forms 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 pulsation-free positive displacement flow utilizing
no valves.
1.3. NAMEPLATE DATA
The pump nameplate, located on the bearing housing,
contains important information relating to the operation and
servicing of the pump. This information includes the direction
of rotation arrow and the pump model and serial numbers
(see fig. 1-1).
The pump model number must be used for reference
when ordering spare parts. To simplify this procedure, the
model number for your pump has been recorded on the
nameplate drawing on the front cover of this manual. Please
carefully file this manual for further reference.
1.4. Pump Rotation. The direction of rotation is indicated by
a rotation arrow on the nameplate. Rotation of Moyno 2000
G2/G3
pumps is always clockwise, when viewed from the
driven end of the pump.
1-5. Model Number. The pump model number consists of
three component parts: Frame Designations, Type Designa-
tions and a Trim Code. A typical model number for example,
might be 2G065G2 CDQ AAA, as shown on the nameplate
in fig. 1-1.
1-6. Frame Designation. The Moyno 2000 is modular in
concept allowing for optimal matching of drive ends and
Figure 1-1. Typical nameplate showing rotation arrow,
model and manufacturing serial numbers.
pump elements (rotor and stator) to meet the requirements
of the application. The seven or more characters in the frame
designation describe the particular combination of drive end
and pump elements, as well as other construction details of
your pump.
The first character in the frame designation, always
a number, indicates the number of stages of the pumping
elements.
The second character is always a letter (E through K) and
indicates the drive end size.
The third, fourth and fifth characters are numbers indicat-
ing the theoretical capacity of the pumping elements per 100
revolutions.
The sixth character represents the type of universal joint
utilized. The letter G indicates a gear type joint. Other con-
figurations may be indicated by the letters P or F.
The seventh character, a number, indicates the type of
suction housing. Flanged suction port pumps are designated
by the numeral “1,” open throat pumps by the numeral “2”
and open throat pumps with a bridge breaker option by the
numeral “3.”
1-7. Type Designation. Following the Frame Designa-
tion is the Type Designation, a series of three letters describ-
ing the materials from which the pump is constructed.
Section:
MOYNO
®
2000 PUMPS
Page: 1
Date: October 2005