r22 enthalpy diagram

[eskimo2]

A Quiz from one of my technicians: He claims this unit had these these conditions today.

R22 air coooled package airconditioning unit:
Ambient: 84f
Suction 52psig/82f
discharge 280psig/158f
LIquid at condenser 112f
the more gas added the higher the hp went!

the unit is twin compressor system. both with similar pressures...this adds to confusion!
No temp drop across driers by contact thermometer.
both indoor coil and outdoor coils clean. airflows okay as well

I have plotted the suction point to discharge point and it goes almost straight up vertically. It does not not follow the entropy line....whats wrong......been a long time since I learned this stuff!!

Mechanic tells me he evacuated so it should not be non condensables..or is it
What else could it be
Is it air or has he beaten me again!