Charging Refrigerant; Troubleshooting; Warranty - MasterCool 99860-A Operating Instructions Manual

85˚
90˚
95˚
100˚
105˚

CHARGING REFRIGERANT

A. Verify that both valves on the manifold are shut completely.
B. Turn on car and A/C system (this will aid in charging of the refrigerant.)
C. Connect the other end of the yellow hose to Refrigerant Gas supply.
(Follow refrigerant manufacturer's instructions for proper dispensing.)
D. Open manifold low side (blue) valve slowly until pressure reaches 40 psi. Do no exceed
40 psi during recharging process. Exceeding 40 psi could damage the compressor.
E. When charging is finished, close low side (blue) valve.
EVACUATION OF SYSTEM WITH VACUUM PUMP AND LEAK TESTING
A. Verify that there is no refrigerant in the A/C system.
B. Attach blue and red adapters to A/C system.
C. Connect yellow hose to vacuum pump, turn on pump.
D. Open manifold low side (blue) valve.
E. Open manifold high side (red) valve. *After system has been evacuated to a gauge
reading of 29 IN-Hg (inches of vacuum), run vacuum pump for 20 minutes.
F. Close both high and low side manifold valves.
G. Allow system to sit and check gauges to verify vacuum remains.
R134a DIGITAL MANIFOLD PARTS LIST
A. Complete Stem Assembly w/Knob (2 pcs)
B. Piston Seal Assembly w/O-Rings (2 pcs)
C. Piston Seal O-Rings
D. Stem O-Ring
E. Stem, Nut and Stem O-Ring
F. Knob only, Low Side (Blue)
G. Knob only, High Side (Red)
H. Manual Low Side Coupler - complete
I. Manual High Side Coupler - complete
A
C
B
L

TROUBLESHOOTING:

+ - Low Battery Indicator: A special icon will appear in the lower right hand corner of
the LCD when the battery must be replaced.
No Display: Check the battery and polarity.

WARRANTY

This product warrants against defects in material and workmanship for a period of one year.
This warranty does not cover failure due to abuse, improper usage, or progressive wear and tear.
Warranty becomes valid to the original user, effective on the purchase date. A copy of an invoice
along with a registration card must be sent to 1 Aspen Drive, Randolph, NJ 07869 to validate the
warranty. For further service please contact (973) 252-9119.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to
cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
4
45-55 psi
45-55 psi
50-55 psi
50-55 psi
50-55 psi
D
E
O,P
www.mastercool.com
J. Low Side O-Ring
K. High Side O-Ring
L. Gasket for Hose Assembly
M. O-Ring for Male Fitting
N. Gasket for 1/4" FL
O. Shut-Off Valve O-Ring (1/2" ACME)
P. Shut-Off Valve O-Ring (1/4" FL-F)
Q. Optional USB and CD for Software Upgrade
F, G
M
N
225-250 psi
250-270 psi
275-300 psi
315-325 psi
340-345 psi
Q
H,I
J,K