Important Steps Of Initial Start-Up; Vacuum Tips For Best Performance - yellow jacket BULLET DCX NH3 Operation And Maintenance Manual

Important Steps of Initial Start-Up

1. Make sure motor is off and the voltage
selector switch is set to the appropriate
voltage.
2. Remove oil fill cap on pump cover. Fill
with YELLOW JACKET
Oil until oil level is even with oil level
line.
3. Stay clear of the oil fill/exhaust port!
Remove intake cap to open intake to
the atmosphere and then switch on
the motor. When pump reaches running
speed, replace cap.
4. To check the pump's performance,
attach a micron gauge to the 1/4" male
flare fitting, making sure that the intake
fitting is capped. Turn on the pump. The
micron gauge will display the ultimate
vacuum reached.

Vacuum Tips for Best Performance

Quick Tips:
1. For the fastest vacuum, connect your
pump directly to the system. Going
through a manifold slows the job.
2. Use as large of a hose as possible, even
though the system has 1/4" fittings. A
1/2" or 3/8" hose allows a much faster
and more complete vacuum.
3. Use as short of a hose as practical to
get maximum evacuation speed. Short
hoses make evacuation faster than
longer hoses. Long hoses slow the
process.
4. Metal hoses are the most impervious
so will be most effective in evacuation.
5. Evacuate through both high and low
sides at the same time to speed up
evacuation.
Vacuum Pump
®
5. Improve cold weather starting by
opening intake and running your pump
for 1 minute.
6. When turning pump off, open intake
fitting to break vacuum just prior to
shut-off.
7. Disconnect pump and put cap on intake
to keep out contaminants.
8. If an extension cord is needed, refer to
the below chart for proper sizing.
RECOMMENDED EXTENSION
CORD SIZES
Total Extension Cord Length (feet)
25'
16 Ga. 14 Ga.
Wire Gauge (AWG)
6. Use the 4-in-1 Vacuum/Charge Valve &
Core Tool to remove the
Schrader valves
from the system and
evacuate through
unrestricted lines for
a faster and higher
vacuum. Removing
Schraders saves over 30% in time.
7. Use two pumps on very large systems
to reduce vacuum time. Put one of the
pumps on the low side of the system
and one pump on the high side of the
system.
50' 100'
12 Ga.
5