12
13
REGULAR MAINTENANCE
1. Always stop the pump at the bottom of its stroke when you take a break or at the end of the day. This helps keep
material from drying on the rod, damaging
the packings.
2. Keep the displacement pump packing nut/wet cup 1/3 full of Airlessco Throat Seal Oil at all times. The TSO helps
protect the packings and rod.
3. Lubricate Connecting Rod Pin every 3 months.
4. Inspect the packing nut daily. Your paint pump has Airlessco's patented "Triple Life Packing System". Packing life will
be extended a minimum of 3 times if the proper packing tightening procedure is followed!
PACKING TIGHTENING PROCEDURE:
Inspect the packing nut daily!If seepage of paint into the packing nut and/ or movement of the piston upward is
found (while not spraying), the packing nut should be tightened enough to stop leakage only, but not any tighter.
OVERTIGHTENING WILL DAMAGE THE PACKINGS
and reduce the packing life to the life of other piston pumps.
OIL AND LUBRICATION INSTRUCTIONS
ELECTRIC MOTOR MAINTENANCE
FIG. 12
1. LUBRICATION
- This motor is supplied with pre-
lubricated ball bearings, lubricated for the life of the
bearing.
2. MOTOR BRUSHES
- need periodic inspection and
replacement as wear indicates. Brush wear is greatly
influenced by individual application. It is recommended
that brush wear be checked at early intervals of
operation in order to determine future required
inspection. Standard Leeson brushes have an initial
length of 1 and 1/4". When the brushes are worn to a
length of 5/8" they should be replaced.
TO CHANGE THE BRUSHES:
1. Unplug the machine.
2. Remove the cover over the motor.
3. Open the two covers at the rear of the motor.
4. Loosen the screw under the brush.
5. Pull out the wire.
6. Push the brush retainer clip in and withdraw.
7. Remove the worn brushes.
8. Install new brushes in the reverse order.
For long life, new brushes (Part # 301-146 for 110 volt, Part # 301-147 for 220 - 240 volts) need to have a run in period.
After changing brushes, set the machine for spraying. With a bucket of Pump Conditioner and water, a 50' 1/4" airless
hose, airless gun and tip on unit, open the prime valve and switch on. The pump will now prime. With pump running in the
prime mode, turn the pressure control knob to high pressure. (The pump has to cycle fast with no pressure in the pump).
Run the pump for 20 minutes and the brushes will be run in.
SEALED BEARING
1 OZ. SAE 30 W OIL -
SEMI-ANNUALLY
FILL PLUG- UNIT HAS GREASE IN
GEARBOX FROM FACTORY AND WILL
NOT REQUIRE CHANGING.
(GREASE - PN: 301-178)
OIL IMPREGNATED SLEEVE-
DIP IN HOT 10 W OIL WHEN REMOVED
BLEED (WEEP HOLE)
