Trane RT-SVX10C-EN Compressor Start-Up, Compressor Damage, Rotating Components, Figure, Top View

Figure 4-5

Fresh Air & Return Air Linkage Adjustment

	Top View
RETURN AIR		FRESH AIR
DAMPERS		DAMPERS

	3
1	4	8
2	5
FILTER	6	7
SECTION

Compressor Start-Up

(All Systems)

1.Ensure that the "System" selection switch at the remote panel is in the "Off" position.

2.Before closing the disconnect switch, ensure that the compressor discharge service valve and the liquid line service valve for each circuit is back seated.

CAUTION

Compressor Damage!

Do not allow liquid refrigerant to enter the suction line. Excessive liquid accumulation in the liquid lines may result in compressor damage.

COMPRESSOR SERVICE VALVES MUST BE FULLY OPENED BEFORE START-UP (SUCTION, DISCHARGE, LIQUID LINE, AND OIL LINE).

3.Close the disconnect switch or circuit protector switch

that provides the supply power to the unit's terminal block 1TB1 or the unit mounted disconnect switch 1S14 to allow the crankcase heater to operate a minimum of 8 hours be- fore continuing.

Note: Compressor Damage could occur if the crankcase heater is not allowed to operate the minimum of 8 hours before starting the compressor(s).

Unit Start-Up (Continued)

4.Turn the 115 volt control circuit switch 1S1 and the 24 volt control circuit switch 1S70 to the "On" position.

5.Open the Human Interface access door, located in the unit control panel, and press the SERVICE MODE key to display the first service screen. Refer to the latest edition of the RT-SVP01A-EN for CV applications or RT-SVP02A-EN for VAV applications for the SERVICE TEST screens and programming instructions.

6.Use Table 4-1 to program the following system compo- nents for operation by scrolling through the displays;

20 to 30 Ton Compressor 1A (On) Compressor 1B (Off) Condenser Fans

40 through 60 Ton

Compressor 1A (On)

Compressor 1B (Off)

Compressor 2A (Off)

Compressor 2B (Off)

Condenser Fans

70 & 105 Ton

Compressor 1A & 1B (On)

Compressor 1C (Off)

Compressor 2A & 2B (Off)

Compressor 2C (Off)

Condenser Fans

115 & 130 Ton

Compressor 1A & 1B (On)

Compressor 1C & 1D (Off)

Compressor 2A & 2B (Off)

Compressor 2C & 2D (Off)

Condenser Fans

7.Attach a set of service gauges onto the suction and dis- charge gauge ports for each circuit. Refer to Figure 4-6 for the various compressor locations.

8.Once the configuration for the components is complete, press the NEXT key until the LCD displays the “Start test in __Sec.” screen. Press the + key to designate the delay before the test is to start. This service test will begin after the TEST START key is pressed and the delay desig- nated in this step has elapsed. Press the ENTER key to confirm this choice.

WARNING

Rotating Components!

Disconnect all electric power, including remote discon- nects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvert- ently energized. Failure to disconnect power before ser- vicing could result in death or serious injury.

9.Press the TEST START key to start the test. Remember that the delay designated in step 8 must elapse before the system will begin to operate.

10.Once each compressor or compressor pair has started, verify that the rotation is correct. If a scroll compressor is rotating backwards, it will not pump and a loud rattling sound can be observed. Check the electrical phasing at the load side of the compressor contactor. If the phasing is correct, before condemning the compressor, inter-

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