Perma Pure eCOOL 5000 Series - Manual (Page 9)

Section D: Installation 9
D: I
NSTALLATION
eCOOL™ 5000 Digital Thermo-Electric Coolers should be installed away from heat
sources in a well ventilated area of an instrument rack or enclosure.
Sample tubing connections to the eCOOL™ 5000 Coolers depend on the heat
exchanger material of construction. A cooler with stainless steel heat exchangers
uses a stainless steel inlet fitting on the first heat exchanger. All other inlets and
outlets are Kynar
®
standard compression type tube fittings with Teflon
®
ferrules.
PVDF (Kynar
®
) heat exchangers use all Kynar
®
standard compression type tube
fittings with Teflon
®
ferrules. Perma Pure cannot warrantee against damage to the
Peltier elements or heat exchangers if our supplied Kynar
®
tube fittings are not used.
CAUTION: If using a stainless steel sample line, place 2 inches of Teflon
®
tubing in
between the exchanger inlet fitting and the heated line. This prevents the sample
cooler from heat sinking the incoming heated line, which adds undue load to the
cooler.
The inlet and outlet tubing of all metal or Kynar
®
heat exchangers is 1/4" NPT. The
operator should use the compression type fittings. The inlet of the first heat
exchanger uses a 3/8” tube x ¼” MNPT, tube connector fitting to mate with most
stan
dard 3/8” sample lines.
For eCOOL™ 5000 models that utilize passive/active heat exchangers (i.e., e5300,
e5500), the sample pump should be installed after the cooler to protect the pump
head from moisture and ensure longer diaphragm life. The sample pump should be
installed between the heat exchangers in active/active models (e5400, e5800). This
will assist in water removal by pressurizing the downstream heat exchanger. There
will be minimal sacrifice in pump diaphragm life since the majority of water will be
removed by the first active heat exchanger. It is also acceptable for the sample
pump to be installed after active/active coolers.
The condensate drain connections are Kynar
® elbows, 3/8” MNPT x 1/4” barbed
tube fittings. A Perma Pure peristaltic drain pump is recommended for water
removal. This pump uses size 17 tubing.
CAUTION: Do not reduce the size of the condensate tubing since doing so restricts
water flow which may result in water slip (moisture carryover) in the sample.