HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
VRL Merchandisers
P/N 3034040_H 15
REPLACING REFRIGERATION SYSTEM
COMPONENTS
STEPS TO RECOVER REFRIGERANT
1. Make sure you are in a well ventilated area be-
fore making any service or repair to the refriger-
ation system.
2. Disconnect all power sources from the system.
Some systems may have more than one plug or
power supply.
3. Tap system with line tap valves, attaching gauges to
the high and low sides of the system.
4. Connect hose to an evacuated recovery tank.
Open refrigeration gauges and recovery tank.
5. With the suction valve in vacuum, the refrigerant will
be recovered into the recovery tank.
6. Once recovered, close the tank valve and remove
the guage from the tank and connect nitrogen tank
to the system to purge it with nitrogen.
7. Pull vacuum to a minimum of 200 microns or
lower.
Only Hussmann service technicians or
technicians qualied to handle R-290
(propane) refrigerant should service or
repair this R-290 (propane) equipment
Failure to follow instructions can result
in an explosion, death, injury and
property damage.
refrigeration
line tapping
valve
For VRL merchandisers with a serial
number starting with MY19C or earlier,
there may be a solenoid valve in place on
the liquid line between the condenser coil
and the lter drier. This is a normally closed
solenoid. When the unit is deenergized,
refrigerant can become trapped between
the compressor and this valve. When
removing the refrigerant from the system,
line tap valves must be placed between the
compressor and this solenoid valve as well
as on the low side of the system.
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