Thermo King T-1000R, Maintenance Manual

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Refrigeration Maintenance 10-6
Set Up and Test of Evacuation Equipment
See the previous two pages for the following discussion.
1. Connect the evacuation system to an appropriate power supply. Connect a gauge manifold and refrigerant supply to the
charging port above valve V-4. Turn the micron gauge On.
2. Close valves V-1, V-3 and V-4. Valve V-2 is open.
3. Turn the vacuum pump On.
4. Open valve V-1 to the pump. The micron gauge needle will move to the left. (See micron gauge scale diagram—previous
page).
Note: If the vacuum pump is okay, and there are no leaks between V-1 and V-3, the micron gauge should show less than 500
microns. If not, locate and correct the problem.
5. With the pump still operating, open valve V-3. If the micron reading does not return to a level of less than 500 microns, locate
and correct the problem before continuing.
6. With the vacuum pump still operating, open valve V-4. The micron level will rise momentarily. If the micron reading does
not return to a level of less than 500 microns, locate and correct the problem before continuing.
7. Evacuate hoses to 100 microns or lowest achievable level below 500 microns.
8. Once 100 microns is reached, close valve V-1 to the pump. Turn the vacuum pump Off.
9. Observe the micron gauge reading. The vacuum rise should not exceed 2000 microns in 5 minutes.
10. If the rise is above 2000 microns in 5 minutes, check all hoses and connections for leaks. Hoses with moisture present will
require additional evacuation time to achieve satisfactory results.
NOTE: Dirty vacuum pump oil or a defective vacuum pump will prevent a low micron reading. Hoses and fittings can be
isolated individually to identify leaks.
Using Evacuation Mode (Not on T-500R/T-Dairy)
A Graphics HMI is required to access the Evacuation Mode. On units equipped with the standard Truck HMI, it must be
disconnected and have a Graphics HMI connected instead. Refer to the appropriate Microprocessor Diagnostic Manual for
more information. The following example shows the Graphics HMI.
Evacuation Mode opens the ETV all the way for refrigeration system evacuation.
1. Start at the Standard Display and press the MENU key.
Press Menu Key
2. The Maintenance Menu is accessed from the first Operator Menu screen that appears; either the Language Display or the
Alarms Display. The Alarms Display is shown here. Press and hold both the Exit key and the unlabeled soft key for 5 seconds.
Press and Hold Exit and Unlabeled Keys
3. The Maintenance Menu Hourmeters will appear. Press the NEXT key as required to show Evacuation Test. When the
Evacuation Test is shown press the SELECT key.