Cylinder head bolts not properly torque
a. Replace gaskets
b. Retorque cylinder head bolt
Liquid refrigerant flood back or flooded start
a. Remove excessive oil until maintained
Between 1/8 to 3/8 up the sight glass.
b. On multiple compressor units, add mo.
or barrel oil at any time. Verify proper
operation of defrost system.
c. Increase superheat or replace valve
d. Correct problem or replace fan.
Liquid refrigerant flood back or flooded start
a. Correct piping
b. Do not allow more than 1/3 of system
on defrost at any time. Verify proper
operation of defrost system.
c. Increase superheat or replace valve
d. Correct problem or replace fan.