26
QTech
Spray.com
MAINTENANCE
CAUTION:
Never lay the pump on its back. Paint could flow backward and
damage the electronics or the engine.
WEEKLY MAINTENANCE
1
Ensure the displacement pump packing nut is lubricated with piston lubricant
at all times.
This helps to protects the piston, rod and packings. In normal
usage five drops once a week should be sufficient.
2
Inspect the packing nut.
If either of the following conditions exist the
packing nut should be tightened
a
Seepage of material past the packing is found.
b
While the system is pressurized during the intervals when the motor is not
running the piston is not holding its position but rather tends to slip
downward.
To tighten the packing nut:
First loosen the butterfly bolt 26 and raise the
fence 28. Now reach the tommy bar through the opening and tighten the
packing nut a small amount. When finished, reclose the fence.
CAUTION:
The packing nut should be tightened just enough to stop leakage
only, but not any tighter. Overtightening will damage the packings and reduce
packing life.
3
Clean the intake ball and seat.
a
Remove the suction assembly and check ball housing.
b
Remove the check ball and ball guide and clean all related parts.
c
Replace in reverse and tighten.
ENGINE MAINTENANCE
Maintain the engine according to the instructions in the engine instruction
manual.
1
Check the engine oil level at least once a week.
2
The engine oil should be changed after the first 20 hours of operation
(break
-
in period). Thereafter, it should be changed every 100 hours.
NOTE:
All engine repairs should be entrusted to an authorised service centre.
27
QTech
QT830 Airless Sprayer
PACKINGS
The packings are a wearing part. If the pump can no longer maintain pressure,
has difficulty priming and paint seeps into the throat of the pump, and
tightening the packing nut no longer helps,
then the packings will require
replacement. This is best entrusted to a qualified repair technician.
