2-8
E
LECTRICAL
/ R
EFRIGERATION
P/N 3141959_C
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
If a leak is detected, follow store safety
procedures . It is the store’s responsibility to have
a written safety procedure in place . The safety
procedure must comply with all applicable codes
such as local fire department’s codes .
At minimum, the following actions are required:
• Immediately evacuate all persons from the
store, and contact the local fire department to
advise them that a propane leak has occurred .
• Call Hussmann and/or a qualified service
agent and inform them that a propane sensor has
detected the presence of propane .
• Do not let any persons back into the store
until the qualified service technician has arrived
and that technician advises that it is safe to
return to the store .
• The propane gas used in the unit has no odor .
The lack of smell does not indicate a lack of
escaped gas .
• A hand-held propane leak detector
(“sniffer”) should be used before any repair and/
or maintenance is attempted . All repair parts
must be identical models to the ones they are
replacing .
• No open flames, cigarettes or other possible
sources of ignition should be used inside the
building where the units are located until the
qualified service technician and/or local fire
department determines that all propane has been
cleared from the area and from the refrigeration
systems .
Only Hussmann service technicians or
technicians qualified 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
REPLACING REFRIGERATION SYSTEM
COMPONENTS
STEPS TO RECOVER REFRIGERANT
1 . Make sure you are in a well ventilated area before
making any service or repair to the refrigeration
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 .
Summary of Contents for FNGSC-A
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