Depends on the temperature of the beer at the store. Use this thermometer on the
Smartstrip to determine the temperature of the beer in the keg before dispensing. Confirm temperature with a calibrated thermometer.
If you target 38F beer and the keg is at this temperature, you should be fine @ 14 PSIG.
Pull the safety until you no longer here gas escaping. Be aware that you can shake out too much gas and the beer will be flat.