There was a slight temperature increase, ~1 degree F.in the VEA late yesterday. Part of this can be attributed to increased activity (both personnel and clean rooms running)and partly due to the increase in temperature in the mechanical room adjacent to the VEA which houses the purge air compressors. The temperature in that room increased to 86 degrees F and some of that warm air likely migrated to the VEA. I went down to the end station late yesterday and checked the glycol level/pressure, which normally operates at 30psi and that pressure was down to ~24psi, not enough to make a temperature excursion of 1F. I topped off the glycol bringing the pressure up to 30psi. I also increased the air flow of the supply fan from 60% to 80%. This is a common practice when we fire up clean rooms in the L(VEA)s. I will continue to monitor the temperature and make further adjustments as needed. Current set point in the VEA is 65F-current temp is 65.6F.