5
DESCRIPTION
The diaphragm-operated AIR CADET Pump is designed for pressure, suc-
tion and gas circulating applications. The convoluted diaphragm and the
unique pump cavity are designed to provide extended diaphragm life by
minimizing stress, wear and heat buildup. This has been done while ensur-
ing and optimizing pressure and vacuum characteristics.
The media being pumped will come in contact with VALOX
®
, FLUOREL
®
DACRON
®
and VITON
®
. Polyethylene fittings are supplied. This provides
much better chemical resistance than conventional aluminum or stainless
steel pumps. The motor is painted with an epoxy paint.
The Pumps are available for 115V AC or 230V AC applications. They are
intended for either industrial or commercial use.
The brushless motor is totally enclosed, thermally protected and has
sealed ball bearings. No regular maintenance is required. A six-foot length,
three conductor power supply cord is supplied with the unit and the 115V
AC rated motor is a U.L. recognized component.
The polyethylene fittings provided with the pump will accept 3/8 in I.D. flex-
ible tubing.
Figure 1 shows the typical flow characteristics of the 420-1901 pump
as related to pressure and vacuum. The corresponding flow data for the
420-1902 Pump (230V AC) are 5/6 of those in Figure 1.
Note that, even though model 420-1902 is designed for 230V AC, 50 Hz
applications, it can be used on 230V AC, 60 Hz. In this case, the flow data
will increase to that of 420-1901; however, the available torque will
decrease. All AIR CADETS are intended to be started without load (both
ports open to atmosphere). If either a vacuum or pressure exists, the pump
may not start.
OPERATING INSTRUCTIONS
Model 420-1901 is supplied complete with a three-prong grounded plug.
Model 420-1902 is supplied with a two-prong grounded European-type
plug.
PLEASE NOTE: This motor, when operated as outlined in this
manual, will run fairly hot. This condition is normal.
Summary of Contents for 420-1901
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