Hussmann VRL Installation & Operation Manual page 18

E
18
lEctrIcal
REFRIGERATION SYSTEM
FUNCTIONALITY
These cases can be used for frozen food. These
merchandiser model is self-contained and has
a controller that automates the refrigeration
cycle and the defrost cycle.
During refrigeration mode, the discharge line
solenoid valve (RSV) is energized and held
open, allowing the gas to flow through the
condenser.
(This diagram is applicable for both 1 and 2-door models)
PN_3155541_E
/ r
EfrIgEratIon
Figure A. System Diagram- Refrigeration Mode
FILTER
DRIER
CONDENSATE PAN
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
K
/ c
ontrollEr
Once the refrigerant is in a liquid state, a
capillary tube is used as an expansion device
that feeds the evaporator.
During refrigeration mode, hot gas solenoid
valve (HGSV) is deenergized and closed.
CAP TUBE
HGSV
PRESSURE
RSV
SWITCH
REV ECN
CHECK
VALVE
COMPRESSOR
REVISION HISTORY
DATE REVISION DESCR
UNLESS OTHERWISE SPECIFIE
DIMENSIONS ARE IN INCHES.
THIRD
ANGLE
PROJECTION