Maintenance - Unimac UM-SP-35 User Manual

Unimac Airless Paint Sprayer UM-SP-35

Maintenance

NOTE: ALWAYS clean the machine after spraying to avoid any residual spray material in the
machine, spray gun and spray tip from hardening and causing blockages, or otherwise
affecting performance of the machine. • Always
clean the machine using the correct type of solvent
or thinner for the material that has been sprayed.
•
Check and clean spray gun filter regularly –
remove the hose connector and hook plate from
the spray gun, then screw out the gun handle.
Remove the gun filter and clean it, then replace in
reverse order. Replace the filter if it is damaged.
•
Check and clean the intake tube filter regularly –
remove the filter from the end of the intake tube and
clean it in appropriate thinner or solvent.
•
Check if parts are loose and if sealed parts have
any leakage.
Cleaning the Airless Sprayer
WARNING!
To reduce the risk of static sparking, which can cause fire or explosion, always hold a
metal part of the gun firmly against the metal pail when flushing. This also reduces splashing.
1. Remove the spray tip.
2. Pour enough clean, compatible solvent into a large, empty metal container to fill the pump and hoses.
3. Place the suction tube into the container.
4. Turn "pressure control knob" to low.
5. Open the "primer valve" to the open - "Priming Position". This will allow an easy start.
6. Turn the motor ON/OFF switch to ON.
7. Point the gun into the metal pail and hold a metal part of the gun firmly against the container.
8. Squeeze the trigger. At the same time, slowly turn the pressure control knob clockwise just enough to
move liquid at the lowest possible pressure.
9. Allow the pump to operate until clean solvent comes from the gun.
10. Release the trigger.
11. If you are going to start spraying, place the pump or suction tube into the supply container. Trigger the
gun into another empty, metal container, holding a metal part of the gun firmly against the metal
container, forcing the solvent from the pump and hose. When paint starts coming from gun, turn
"pressure control knob" to minimum pressure, place "prime valve" in prime (open) position and engage
the gun safety latch.
12. If you are going to store the sprayer, remove the suction tube or pump from the solvent container and
force the solvent from the pump and hose.
13. Whenever you shut off the sprayer follow the section Adjusting Spray Pressure.
Changing Pump Oil
WARNING! Using the wrong oil can damage the pump and void warranty.
Acceptable Oil Grade: 80W-90, SAE 90 or 85W-90 only.
WARNING! Do not overfill or tilt while filling.
NOTE! Your airless sprayer pump IS shipped with oil. The pump oil level should be checked after each
50 hours of use.
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