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M I I S E R I E S R E C I P R O C A T I N G C O M P R E S S O R
PD130 01001609-16.09.
M II S E R I E S R E C I P R O C A T I N G C O M P R E S S O R
M II SERIESReciprocating Compressor / Open TypeSingle Stage
* Some optional items are included in this photo.
The content of this pamphlet may change without advance notice due to improvements to the product.* Mayekawa and MYCOM are registered trademarks of Mayekawa Mfg. Co., Ltd.
[Head Office]: 3-14-15 Botan, Koto-ku, Tokyo 135-8482, JAPAN TEL:(81)3-3642-8181 FAX:(81)3-3643-7094[ I n q u i r i e s ] : [email protected]
MAYEKAWA MFG.CO.,LTD.
http://www.mayekawa.com
* Operating condition: 800 to 1200 rpm / Dependent on the refrigerant used* Under normal operation
Item 2M II 4M II 6M II 8M II
Refrigerant Ammonia / Propane / HFCs (R134a, R404A, R507A)
Compressor type Reciprocating, Open Type
Number of cylinders 2 4 6 8
Bore mm 146
Stroke mm 106
Displacement*2 m³/h 207 413 620 826
Rotation speed rpm 600-1500*3 800-1500*3
Drive method Direct drive / V-belt
Capacity control % 100/50 100/50 100/66/33 100/75/50/25
Model*1（N/P/F）
0
200
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1200
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1600
0
20
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100
120
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-25 -20 -15 -10 -5 0 5 10 15 20
2M II 4M II 6M II 8M II
2M II 4M II 6M II 8M II
Condensing temperature：40℃Suction Superheat：0℃
Rotation speed：970rpmLiguid Subcooling：5℃▶Ammonia
Evaporating temperature [℃]
Cool
ing
capa
city
[kW
]
Abso
rbed
pow
er [k
W]
0
200
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600
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1200
0
20
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-25 -20 -15 -10 -5 0 5 10 15 20
2M II 4M II 6M II 8M II
2M II 4M II 6M II 8M II
▶R404A Condensing temperature：40℃Suction Superheat：20℃
Rotation speed：970rpmLiguid Subcooling：5℃
Evaporating temperature [℃]
Cool
ing
capa
city
[kW
]
Abso
rbed
pow
er [k
W] 0
200
400
600
800
1000
1200
0
20
40
60
80
100
120
140
160
180
200
-25 -20 -15 -10 -5 0 5 10 15 20
2M II 4M II 6M II 8M II
2M II 4M II 6M II 8M II
▶R134a Condensing temperature：40℃Suction Superheat：20℃
Rotation speed：970rpmLiguid Subcooling：5℃
Evaporating temperature [℃]
Cool
ing
capa
city
[kW
]
Abso
rbed
pow
er [k
W]
0
200
400
600
800
1000
1200
1400
1600
0
20
40
60
80
100
120
140
160
-25 -20 -15 -10 -5 0 5 10 15 20
2M II 4M II 6M II 8M II
2M II 4M II 6M II 8M II
▶Propane
Evaporating temperature [℃]
Condensing temperature：40℃Suction Superheat：10℃
Rotation speed：970rpmLiguid Subcooling：5℃
Cool
ing
capa
city
[kW
]
Abso
rbed
pow
er [k
W]
Model（P/F） Weight（kg） W（mm） L（mm） H（mm）
2M II 675 715 1070 890
4M II 1080 995 1150 890
6M II 1310 1065 1165 920
8M II 1535 1085 1205 910
Model（N） Weight（kg） W（mm） L（mm） H（mm）
2M II 685 715 1070 960
4M II 1100 1020 1150 1025
6M II 1340 1150 1165 1000
8M II 1575 1150 1205 1020
L
H
WW L
H
* The outer dimension drawings illustrate the 6-cylinder model.* The stop valve, companion flange, flywheel, V-pulley, and safety valve are not included. * The oil cooler is included.
M(Conventional
machine)
MII
Hours
-fold
Overhaulinterval
2
Excellence in performance, durability, and high-pressure resistance:Next-generation energy saving compressor
Reciprocating Compressor[Single Stage] Open Type
M II-SERIES
* Some optional items are included in this photo.
High Performance Derived from New Design
Supports a Wide Range of Pressure Conditions
Easy Maintenance
Multiple Applications
Much Improved Overhaul Intervals
This newly designed compressor minimizes internal heating of the intake gas resulting in the highest level of performance in our product portfolio.
The components are designed for high pressure applications and a wide range of operating conditions. The MII series can be used in demanding applications such as high pressure systems and heat pumps.
Hydrau l ic l ines fo r capac i t y cont ro l a re incorporated into the casing design, allowing simplified package designs as well as easy replacement of consumable components.
Multiple configurations are available in drive type (direct drive/belt drive) and refrigerant c o m p a t i b i l i t y ( A m m o n i a , P r o p a n e a n d Flurocarbon refrigerants).
The MII series incorporates a new valve structure with improved durabil i ty and dramatical ly extended overhaul intervals of 16,000 hours.
Specifications
*1. Specify the refrigerant by adding a prefix to the type code (N = Ammonia / P = Propane / F = Fluorocarbons).*2. Displacement at 970 rpm*3. The range of rotation speed varies by operating conditions. Please refer to the ranges of use stated in the operating instructions.
Performance charts
* Please consult us for further details.
[Water cooled type (Ammonia)][Air cooled type (Propane, HFCs)]
Outer dimensions
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