Perma Pure Baldwin-Series M5A - Manual (Page 12)

PERMA PURE LLC
Model M5A User’s Manual
Doc. #580: Revision: 000
Page 12 of 22
Shutdown
After completion of operation with a gas stream, allow the Testers Choice to run for at least 10
minutes with both Sample In and Sample Out connections open to atmosphere. This will allow
the inlet and outlet lines a sufficient amount of time to evacuate any moisture in the system. If an
overly high dew point sample was introduced to the system it may be beneficial to allow the
system to run longer. In any case it is always a good practice to make sure that all of the
condensate is drained from the impingers, drain lines and peristaltic pumps. Visually observing the
condensate drain, while the peristaltic pumps are running, is good practice to ensure that
condensate is completely removed from the system. This should be done before disconnecting the
drain hose from the system.
Condensate is potentially dangerous. Never handle drain lines, impingers or any other item
that may have come in contact with the gas stream or any hazardous material, without adequate
personal protective equipment. ALWAYS assume that any liquid present is hazardous.
After the Testers Choice M8 has been run for a period of time, it is possible that a small amount of
clean water may puddle in the bottom of the cabinet. This moisture is a byproduct of the thermo-
electric coolers operation and may come from the cooling block assembly’s outer surface. The
surface temperature of the cooling block, which has gone below the ambient air dew point, may
cause condensation to drip to the bottom of the cabinet. This is a normal situation, but doesn’t
always occur. Any water inside of the cabinet should be removed before transporting the unit to a
different location.