MovinCool CM25 Service Manual - Manual (Page 21)

Operation Section
21
(3) Operation
1) Start of compression
1) The cylinder is filled with low pressure gas.
2) Since pressure in the discharge chamber is higher
than in the cylinder, the discharge valve is kept
closed.
2) Suction and compression
1) The pressure in the cylinder increases gradually.
2) Refrigerant suction begins on the suction side of
the cylinder.
3) The discharge valve remains closed.
3) Discharge
1) The pressure in the cylinder exceeds that in the
discharge chamber, and the discharge valve
opens.
2) On the suction side, refrigerant suction continues.
4) Completion of compression
1) When compression is completed, all of the
refrigerant has been drawn from the suction
chamber.
2) Operation then returns to step 1) (Start of
compression) and the above process of suction
and compression continues repeatedly in
succession.
I003185
Discharge
Valve
Cylinder
Piston
I003186
Cylinder
Discharge
Valve
Piston
I003187
Discharge
Valve
Cylinder
Piston
I003188
Cylinder
Discharge
Valve
Piston