Regular Maintenance; Electric Motor Maintenance - AIRLESSCO LP 2400 Operation Manual And Parts List

REGULAR MAINTENANCE

1. Keep the displacement pump packing nut/wet cup 1/3 full of TSO (Throat Seal Oil) at all times. The TSO
helps protect the packings and rod.
2. Inspect the packing nut daily. Your pump has a patented Triple Life Packing System. Packing life will be
extended a minimum of three times if the following "Packing Tightening" procedure is followed:
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.

ELECTRIC MOTOR MAINTENANCE

1. LUBRICATION - This motor is supplied with prelubricated ball bearings, lubricated for the life of the bearing.
2. MOTOR BRUSHES need periodic inspection and replacement as wear indicates. Brush wear is greatly influ-
enced by individual application. It is recommended that brush wear be checked at early intervals of operation in
order to determine future required inspections. Standard Leeson brushes for this motor have an initial length of
3/4". When the brushes are worn to a length of 3/8", they should be replaced.
3. TO CHANGE BRUSHES, follow the procedures below:
a) Unplug the machine.
b) Open the two covers at the rear of the motor.
c) Loosen the screw holding the brush terminal and remove the brush lead.
d) Push the brush retainer clip (PN 331-398) in and remove.
e) Remove the worn brushes (one on each side of motor).
f) Install new brushes in reverse order and replace covers.
NOTE: For longer life, new brushes (Part No. 331-131) need to have a run in period. After changing brushes,
set up the machine for spraying. Use a bucket of water and Coro-Chek mixture, a 50' x 1/4" airless hose, airless
gun with a .017 tip on unit, turn the Prime/PR Control Valve to the Prime position and turn the unit on. Turn the ON/
OFF Pressure Control Knob to maximum pressure (fully CW position) and let the pump cycle at high speed and
zero pressure for 20 minutes. This will allow the brushes to "run in" properly, giving a longer life.
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