TIAGO

HVAC 41 10.2 MAINTENANCE NOTE  “While starting the Vehicle itself after long dura- tion (more than 15 days), following procedure need to be followed to meet AC performance. Start the vehicle in AC & Blower OFF conditions in idling for 2-3 minutes, then switch on the AC and Blower & run it for 2~3 minutes for circula- tion of refrigerant & oil to lubricate the internal parts of AC system”. 10.2.1 PRELIMINARY INSPECTION A. AC SYSTEM PERFORMANCE TEST 1. Place the vehicle in a ventilated, shaded area free from wind. 2. Check that the surface of the condenser is not restricted with dirt, leaves, flies, etc. Clean as necessary. 3. First conduct the open door test followed by closed door test as mentioned below: OPEN DOOR TEST TEST DURATION: 10 min. INITIAL VEHICLE CONDITIONS The following conditions to be confirmed before start- ing the test: Vehicle stationary with all doors open Engine Speed 1500 rpm FOR MANUAL HVAC Blower Speed 4 th AC Switch ON Temperature Knob Max. Cool Vent Knob Chest Air Intake Recirculation air mode Run the vehicle in the above condition with all doors open for 10 min. At the end of 10 min insert the probe at the front vent and record the readings simi- larly insert the probe at the rear vent and record the reading. The reading of front vent should be as per the table given below: VENT AMBIENT TEMPERATURE < 30ºC (RH upto 40%) 30–35ºC (RH up- to 40%) 35- 40ºC (RH upto 40%) Above 40º C (RH upto 40%) FRONT 13º C 20º C 24º C 29º C RH: Relative Humidity. NOTE  The above table is applicable if the ambient RH is 40%.  For RH higher than 40% refer the graph below for acceptable temperatures: FOR FRONT VENT