Sub-Zero 648PRO Technical Data

This document provides technical specifications for the Sub-Zero Model 648PRO refrigerator and freezer.

Model 648PRO

CHARGE (R-134a Refrigerant)

NOTE: Always check the serial tag for the exact charge.

Component	REFRIGERATOR	FREEZER
CHARGE (R-134a Refrigerant)	4.0 oz.	6.0 oz.

NORMAL OPERATING PRESSURES

	Low Side	High Side
REFRIGERATOR	0-12 psi to 30-42 psi	75 psi to 110 psi
FREEZER	5" Vac-1 psi to 6-12 psi	75 psi to 120 psi

COMPRESSOR

NOTE: Always check the parts price list for possible substitutions.

Specification	REFRIGERATOR	FREEZER
Service Part No.	4201880	4204741
Manufacturer	Embraco	Embraco
Mfg. Part No.	EMI30HER	VEGY
Original Compressor / Service Compressor Amps	2.1(V), 0.8 (non-V) / 1.1	2.6 / 2.6
Original Compressor / Service Compressor BTU's	864(V), 345(non-V) / 280	1070 / 1070

DEFROST METHOD

Component	REFRIGERATOR	FREEZER
DEFROST METHOD	"Fan Assisted Off Cycle Defrost" Evap > 38°F before Compressor ON.	"Adaptive Defrost" Intervals and duration varies. Followed by 5 min. compressor delay.

DEFROST TERMINATOR

Component	REFRIGERATOR	FREEZER
Cut-In Temp.	----	30°F / -1°C
Cut-Out Temp.	----	55°F / 13°C

DEFROST HEATER

Component	REFRIGERATOR	FREEZER
Watts	----	450
Amps	----	3.75
Ohms	----	~ 32

DRAIN TROUGH HEATER

Component	REFRIGERATOR	FREEZER
Watts	----	80
Amps	----	.66
Ohms	----	~ 180

FILL TUBE HEATER

Component	REFRIGERATOR	FREEZER
Watts	----	4.2
Amps	----	.04
Ohms	----	3000 - 3500

WATER VALVE

Component	REFRIGERATOR	FREEZER
Watts	----	50
Amps	----	.4
Ohms (Inductive)	----	~ 288

THERMISTORS (Evap & Compartment)

Component	REFRIGERATOR	FREEZER
Ohms at 32°F / 0°C	30000 - 33000	30000 - 33000

GLASS REFRIGERATOR DOOR HEATER

Component	REFRIGERATOR	FREEZER
Watts	5 @ 12VDC	----
Amps	.4	----
Ohms	~ 29	----

Document Revision B - November, 2006

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