9 T--326U NIT O PERATION2.1 OPERATING INSTRUCTIONSBefore attempting to operate the system, power must be availablefrom the vehicle battery. If the engine is not running, start theengine. Most systems will not operate unless a signal is receivedto the controller from the vehicle ignition.Carrier Transport Air Conditioning system’s can be supplied withtwo different type manual controls. the Standard Manual Controland the Florida Control123451 Control Panel Housing2 Nameplate (SwitchMounting)3 Thermostat Control4 Fan Speed Switch(3 Speed or Variable)5 Ambient Air Sensor(Thermostat)Figure 2-1 Drivers Control Panel -- Standard2.2 DRIVER’S CONTROL PANEL -- STANDARDThe standard Drivers Control Panel (See Figure 2-1), consists ofan evaporator fan speed switch (three speed or variable) and anadjustable thermostat. The drivers control panel is normally locatedwithin easy reach of the driver. On larger bus applications therecould be two separate air conditioning system driver control panels.One for each system.