Snap-On Dual 3412, User Manual

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3-1
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3
Use this chapter to maintain
D Duuaall 33441122
:
• Master filter,
• Pump, and
• When stored for prolonged periods.
Troubleshooting information and a list of parts and accessories
are also included.
Equipment Tips
p
A stable scale weight reading, with the refrigerant not moving
around in the recovery tank, is needed at the beginning and
end of a recycle or charge program. Do not lean on or move
the unit at these times.
p
Never attempt to change the recovery tank during unit
operation.
p
Always evacuate service hoses before disconnecting from
D Duuaall 33441122
or manifold gauge set. For additional information
refer to
Chapter 2–Evacuating Service Hoses.
p
Never drop a recovery tank onto scale. This may damage
scale assembly.
p
Always oil seals before connection to any tank, filter or fitting.
A leaky connection or no-flow condition may result if
connection is assembled dry.
p
Always close all tank valves–clockwise–on both recovery
tanks when
D Duuaall 33441122
is not in use.
p
Non-condensable gasses must be purged from the recovery
tank. For additional information refer to
Chapter 2–Purging
Non-condensable Gas
.