700870,700875,700877
SERVICE MANUAL
14
page
Portable Air Condi oners
Compressor opera on
1) Start of compression
1) The cylinder is fi lled with low pressure
gas.
2) Since pressure in the discharge cham-
ber is higher than in the cylinder, the
discharge valve is kept closed.
2) Suc on and compression
1) The pressure in the cylinder increases
gradually.
2) Refrigerant suc on begins on the suc-
on 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 suc on side, refrigerant suc-
on con nues.
4) Comple on of compression
1) When compression is completed, all of
the refrigerant has been drawn from
the suc on chamber.
2) Opera on then returns to step 1)(Start
of compression) and the above pro-
cess of suc on and compression con-
nues repeatedly in succession.
Blade
Discharge
Valve
Roller
Blade
Discharge
Valve
Roller
Blade
Discharge
Valve
Roller
Blade
Discharge
Valve
Roller