Table of Contents
Advertisement
Maintenance
Daily Maintenance
1. Keep the displacement pump packing nut/wet cup
lubricated with Airlessco TSO (Throat Seal Oil) at all
times. The TSO helps protect the rod and packings.
2. 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 just enough to stop leakage
(torque is 24 in-lbs). Overtightening will damage the
packings and reduce the packing life.
Electric Motor Maintenance
Lubrication
The motor is supplied with pre-lubricated ball bearings,
lubricated for the life of the bearing.
Motor Brushes
Motor brushes need periodic inspection and replace
ment as wear indicates. Standard brushes have an ini
tial length of 1" and should be replaced when they are
worn to a length of 1/2". Brush wear is greatly influenced
by individual application and it is recommended that
brush wear be checked at early intervals of operation in
order to determine future required inspection.
To change the brushes:
1. Unplug the machine.
2. Open the two covers at the rear of the motor.
3. Push the brush retainer clip in and withdraw.
4. Disconnect the brush wire.
5. Pull out the wire.
6. Remove the worn brushes.
7. Install new brushes in the reverse order.
3A1190H
To increase brush life, new brushes (Part #331780 for
110 volt) 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, air
less gun and tip on unit, open the prime/pressure relief
valve and switch on. The pump will now prime. With
pump running in the prime mode, turn the pressure con
trol knob to high pressure. (The pump has to cycle fast
with no pressure in the pump). Run the pump for 20 min
utes and the brushes will be run in.
Servicing the Fluid Pump
Fluid Pump Disconnect
1. Relieve Pressure, page 7.
2. Flush the material you are spraying out of the
machine.
3. Remove the rigid fluid tube (16).
4. Remove the connecting rod shield(12).
5. Move the piston rod (10) to its lowest position by
cycling pump slowly.
6. Turn off the motor and disconnect power from unit.
7. Disconnect fluid tube (16) from pump body.
8. Remove the retaining ring (4) from the connecting
rod (2) and slide the sleeve (3) down revealing the
connecting rod pin (1).
9. Using a 1/2" wrench, unscrew the two bolts (8) from
the cover assembly (14). The fluid pump (9) will be
hanging loosely at this point.
10. Remove the connecting rod pin (1) out of the con
necting rod (2), allowing the removal of the fluid
pump (9) from the machine.
Maintenance
331780
ti16051a
11
Hide quick links:
Advertisement
Table of Contents
