Cab air-con was blowing warm air. ~~~~~ Checked and found 3512 cab a/c low freon. LP:30/HP:118psi. Use recovery machine to recover/vacuum/recharge 2.1 kg freon. LP:50/HP:210psi. A/c able to achieve cooling. No sign of leakage. N.ALai.M.K/16.09.20. ---------------------