Yellow Jacket 93530, 93533 Specifications

®

YELLOW JACKET

SuperEvac™ Vacuum Pump

for Ammonia and NH3 Systems

Features

Heavy duty metal handle.
Permanently attached to pump
body. Built-in hook hole.

1) Male pipe
pump intake
(see below)

Heavy duty high
torque motor for
cold weather
starting.

Longer heat dissipation fins for
a cooler running unit.

High resiliency foot pads for
added stability and skid resistance.

2) Gas ballast valve
(see below)

Lower operating temperature to
improve efficiency and vacuum.

Pump exhaust also doubles as oil fill

port. Use YELLOW JACKET

oil for assurance of a

clean, fast job.

Wide-view

sight glass

for easier
Monitoring
of oil level.

Oil drain valve

for quick draining

and convenient access.

The Design of the SuperEvac™

The SuperEvac Pump is a 2-stage rotary vane design
(at right) that increases efficiency and speeds pump
down to 15 microns.

The pump lowers the internal pressure of a refrigera­tion system until moisture boils into a vapor. As the
moisture is vaporized, it is evacuated by the pump,
helping dehydrate the system. Most technicians try to
achieve between 250 and 1000 microns.

During new system set-up, protective caps are re­moved admitting moisture and air into system com­ponents. If air – a non-condensable – remains in the
system, it collects on the high side reducing system
efficiency. This causes a rise in head pressure. The
discharge valve gets hotter than normal and organic
solids form causing compressor failure.

Moisture in the system can form ice which closes off
openings in expansion valves and cap tubes, and
prevent adequate cooling.

Ultimately moisture and air can produce acids and
sludge which could cause in-warranty failures.

A vacuum pump "pulls" air and moisture out of the
system before the system is damaged. The higher and
more complete the vacuum, the more moisture is
removed. That's why your SuperEvac pump is spe­cifically engineered for high vacuums of 50 microns
and better.

1. Male pipe pump intake. Large hose suggested
for maximum pull down.

2. Gas ballast valve helps remove moisture and
other condensable vapors that have been drawn
into the pump as a result of evacuation. Opening
the ballast allows fresh air to enter the pumping
chamber and keep vapors from combining with
the oil. Vapors escape harmlessly through the

Model Voltage Frequency Current Weight

93530
93533

*The 93533 is factory wired for 230V. It can also be configured for 115Vac. Remove the motor switch
plate and make connections as shown on the motor label.

115V

230V*

60 Hz

50 Hz*

Ritchie Engineering Co., Inc.
YELLOW JACKET Products Div.
10950 Hampshire Ave., S.
Bloomington, MN 55438-2623
USA

e-mail: [e-mail]
Web Site: www.yellowjacket.com

7A
4A

30.8 lbs. (14.0 kg)

32.5 lbs. (14.7 kg)

exhaust valve. If combined with oil, vapors can
turn the oil milky white and lower pump per­formance below specifications.

To operate ballast, turn the valve counter­clockwise one full turn after evacuation starts.
As the vacuum reading reaches 1000-2000
microns, close the ballast to achieve a deeper
vacuum.

Phone: [phone]
Int’l Phone: [phone]
Fax: [phone]
Int’l Fax: [phone]

First stage exhausts into the intake of the second stage

similar to two single stage pumps connected together.

Warranty: If found defective, we will ei ther
replace or repair at our option products within
two years of factory shipment. Warranty does

© 2003-2007 Ritchie Engineering Co., Inc. Printed in U.S.A.