Robinair 14830A User Manual

5. To see if the unit is operable without connecting it to a vacuum
source, turn the power ON and wait one minute. All 10 “bars”
should appear on the LCD. If the bars do not appear, check the
batteries. If the batteries are good, then return the unit for repair.
The batteries are the only field-serviceable components in the unit.

Thermistor Vacuum Gauge Accessory

13047A Vacuum
Valve Assembly

Save service time by using
a vacuum valve assembly
with your vacuum pump!
The valve assembly
connects all pieces of
equipment necessary for
evacuating and monitor­ing vacuum—vacuum
pump, manifold, and
thermistor vacuum gauge.

This central valve control
center eliminates switching
hoses and makes service
time quick and easy.

Model 14830A

Thermistor Vacuum

Gauge

For more information, call toll-free 1-800-822-5561

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Design, materials, and specifications are subject to change without notice.

109211 (3/04/03 Rev. B)

in the continental U.S. and Canada. In all other
locations, contact your local distributor.

SPX Corporation
655 Eisenhower Drive
Owatonna, MN 55060-0995 USA
Tech Services: 1-800-822-5561

Fax: [phone]

Customer Service: 1-800-533-6127

Fax: [phone]

Web site: www.robinair.com

© SPX Corporation

A fast and accurate

way to monitor

vacuum level

Model 14830A

Thermistor Vacuum Gauge

Description

The 14830A Thermistor Vacuum
Gauge has been designed to use with
high vacuum pumps to accurately
measure vacuum level during evacuation
of A/C and refrigeration systems. This
unit indicates precisely when the system is
free of air and water, eliminating guess­work and saving valuable service time. It
can also be used to check for leaks without
precharging; if the system holds a vacuum, it
is leak-free.

Operating Instructions

1. Install four “D” batteries into the holder by removing the screw on
the bottom of the battery plate holder. Lift out the plate and install the
batteries into the holder following polarity indicators. Replace the
battery plate into the unit panel by sliding in the top edge first and
secure with the screw.

2. Connect the 24” hose to the flare fitting marked “Vacuum” on the front
panel.

3. Connect the other end of the hose to the system.

CAUTION: Before attaching the hose to the system, depressurize the
system. Damage to the sensor may occur if the connection is made
while the system is pressurized.

4. Turn the power ON and allow one minute for the unit to warm up.

5. Check the LCD window. If all 10 “bars” appear on the screen the
system is above 25,000 microns (1” Hg vacuum).

Battery and A/C powered and self-contained in a durable carrying
case, the 14830A is easy to use and transport. The sensor is built into
the unit and connected to the system through a fitting on the front panel.
A 24” Premium Refrigerant Charging Hose is included for connecting
the thermistor and the system. The hose is stored in a recessed area of
the case.

Power Supply

The 14830A can be used with an A/C power adapter or 4 “D” cell
batteries. See below for A/C adapter requirements.

*A/C adapter output: 6VDC 200mA, + outer ring and

- center pin. Robinair Part No. 18712, 110V.

LCD Range and Tolerance

The 14830A uses the micron scale, the most accurate indicator of
vacuum, measuring from atmosphere to 50 microns. Micron readings
are shown on a custom LCD divided into 10 segments which are shown
as “bars” on the LCD. These segments are:

25,000 microns................. ±5,000 microns

2,500 microns...................... ±500 microns

1,300 microns...................... ±100 microns

1,000 microns...................... ±100 microns

700 microns......................... ±100 microns

400 microns........................... ±50 microns

275 microns........................... ±25 microns

200 microns........................... ±25 microns

100 microns........................... ±10 microns

50 microns............................... ±5 microns

6. Begin evacuating according to the system manufacturer’s specifica­tions. As the system is pumped down, the “bars” on the LCD will go out
one by one. At the point when the bar goes out, the system is at the
vacuum level shown next to that bar.

CAUTION: When you finish the evacuation cycle and during equip­ment shut-down, close any valve between the gauge and the pump
or open the connection at the flare fitting on the instrument panel.

Maintenance

1. The word BAT will appear on the display when the batteries need
replaced. Replace the batteries as soon as possible.

2. If the sensor aquires an oil film, flush the interior with rubbing alcohol
and allow to air dry.

3. If the unit is not going to be used for an extended period of time,
remove the batteries to eliminate possible battery damage due to
leakage.

4. The panel may be cleaned with a damp cloth. DO NOT use harsh

solvents and/or chemicals to clean.