Carrier Compressor and Condensing Unit specifications Start-Up, 07E Physical Data, Unit 07E

Table 3 — 07E Physical Data

UNIT 07E		A022	B027		B033	D044
OPERATING WEIGHT (lb)		1090	1200		1250	1410
REFRIGERANT			R-134a, R-22, R-507/404A
COMPRESSOR — 06E*		A250	A265		A275	A299
Cylinders		4	6		6	6
Bore (in.)		211/	211/		211/	211/		16
Stroke (in.)		16	16		16	27/
		23/	2		23/		8
Displacement (cfm at 1750 rpm)		16	68		16
		50			75	99
Oil Charge (pt)		14	19		19	19
High Side Maximum Pressure (psi)				450
Low Side Maximum Pressure (psi)				245
CONDENSER (Shell and Tube)† Part Number		P701-0840AX	P701-0850AX		P701-0850AX	P701-1065AX
Refrigerant Storage	R-134a	71.3	85.90		85.90	112.70
		15.4	18.67		18.67	23.77
Capacity (lb)
	R-22	70.4	84.80		84.80	111.20
Min Refrigerant Operating		15.1	18.30		18.30	23.30
		61.1	73.60		73.60	96.50
Charge (lb)	R-507/404A
		15.1	18.30		18.30	23.30
REFRIGERANT CONNECTION (in. ODF)		21/	21/		21/	25/
Inlet								8
Outlet		8	8		8	15/
		13/	13/		13/			8
		8	8		8
WATER CONNECTION (in. FPT)		21/	21/		21/
Inlet/Outlet						3
		2	2		2

LEGEND

FPT — Female Pipe Thread

ODF — Outside Diameter, Female

*Compressor listed is the standard compressor for R-22, air conditioning duty. An 06ER compressor is standard equipment for low temperature (R-507/404A) applications. For medium temperature (R-134a) applications, an 06EM compressor is standard. Factory substitutions may be made. Contact Carrier Sales Representative.

†The condenser listed is for R-22, air conditioning duty and may change based on the application. Maximum condenser operating pressure: 350 psi refrigerant side, 150 psi water side.

START-UP

Energize crankcase heater at least 24 hours prior to start-up.

Check to see that oil level is approximately 1/3 up on the compressor sight glass.

Open water supply valve and allow water to reach condens- er. (Turn condenser fan on when the compressor unit is applied with air-cooled condenser.)

Backseat the compressor suction and discharge shutoff valves; open liquid line valve at receiver.

Start evaporator fan or chilled water pump.

Do not attempt start-up with terminal cover removed from compressor. Bodily injury or death may result from explosion and/or fire if power is supplied to compressor with the terminal cover removed or unsecured. See warning label on terminal cover.

Start Compressor — Push the control circuit START- STOP-RESET switch to START. The timer motor starts immediately. Depending on the position of the timer, the compressor start is delayed for 12 seconds to approximately 8 minutes. Check oil pressure after compressor has run a few minutes; the pressure should be 12 to 18 psi above the suction pressure. After about 20 minutes of operation, stop the com- pressor. Allow it to be idle for about 5 minutes, then observe the oil level in the sight glass. Refer to the Carrier Standard Service Techniques Manual, Chapter 1, Section 1-11, for adding oil. The proper oil level for the 06E compressor is approximately 1/3 up on sight glass.

Timer Functions (See Fig. 7 — Timer Cycle.)

1.Switch A (contacts A-A1 and A-A2) provides Time Guard® function. Start of compressor is delayed approxi- mately 5.5 minutes after shutoff. The minimum time between starts of compressor is 8 minutes.

2.Switch B (contacts B-B1 and B-B2) starts compressor and deenergizes the crankcase heater. These contacts also provide one-second time delay for part-winding start.

3.Switch E (contacts E-1) provides approximately 40-second bypass of oil pressure switch (OPS) at start-up. Compressor will shut off if sufficient oil pressure does not build up.

4.Switch D (contacts D-D1) bypasses the low-pressure switch (LPS) for 2.5 minutes at start-up for winter start control.

Fig. 7 — Timer Cycle

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