mycom K Series, Instruction Manual, Page: 16 / 51

2200Q2JE-HO-KHM-N_2015.02.
Chapter 2 Product Specifications and Structure
Ammonia Semi-hermetic Motor with K-series Compressor 2.3 Product Specifications
2-2
2.3 Product Specifications
2.3.1 Standard Specifications
The standard specifications of the ammonia semi-hermetic compressor are shown in Table 2-1 and the
standard specifications of the semi-hermetic motor are shown in Table 2-2.
Table 2-1 Standard Specifications of the K-series Ammonia semi-hermetic Compressors
Item
Model
N4KHM30 N6KHM45
N8KHM60
Refrigerant - Ammonia
Structure - Semi-hermetic reciprocating type
Number of cylinder - 4 6 8
Cylinder bore mm 85
Stroke mm 65
Rotation speed
min
-1
900
～
1800
Displacement
1450 min
-1
m
3
/h 128 193 257
1750 min
-1
m
3
/h 155 232 310
Drive method - Semi-hermetic motor drive
Cooling
method
Head cover - Water cooled
Oil cooler - Water cooled
／
Direct expansion method
Motor jacket - Water cooled
Cooling water system
of this product
-
Series
[Oil cooler] → [Motor jacket] → [Head cover]
Amount of cooling water L/min 35 (at 30°C of cooling water temperature)
Pressure loss kPa 24 36 44
Capacity
control
Method
-
Hydraulic pressure-controlled solenoid valve
（
Loading at energized to the solenoid valve
）
Power
source
V
100V, 110V
／
200V, 220V
Range % 100,50 100,66,33 100,75,50,25
Safety valve -
External install type
(not installed at the time of shipment)
Lubricating
oil
Selection -
ISO - VG46 to VG68
For details, refer to "Reciprocating Compressor K-series
Instruction Manual" Chapter 4 Section 4.1
Oil pressure MPa Suction pressure ＋ 0.2 to 0.3
Filling amount
L 9.0 9.0 10.0
Stop valve
bore
Suction - 50A 65A 80A
Discharge - 40A 50A 65A
Product mass kg 650 780 950
■
Unless otherwise specified, the pressure unit "MPa" represents the gauge pressure in this manual.
■
Product mass is the measured value after docking the semi-hermetic motor to the compressor.
However the mass of a suction stop valve and a discharge stop valve does not contain.