
11
OPERATING MANUAL – SELLEYS PLASTCOAT PC7X WITH AIR COMPRESSOR
6. MALFUNCTIONS
Refer to the chart below for instructions on how to correct common malfunctions.
TYPE OF MALFUNCTION POSSIBLE CAUSES CORRECTIVE MEASURES
A. The red working light is on and
the machine is not running
1. The automatic switch is not turned on
2. The speed control knob stops at the
0-3 position
3. The pneumatic sensor is blocked and
the magnetic core is not returned
4. The circuit board connection is loose
or damaged
5. The motor is damaged, the motor and
the gear are stuck
1. Turn the switch to AUTOMATIC
2. Adjust the knob to the corresponding
position
3. Clean the inside of the sensor
4. Check the circuit board for damage and
replace if necessary
5. Replace the motor or gear and add
lubricant
B. The motor works but barely
spins
1. The connection between the motor and
the gearbox has fallen o or is stuck
2. The output wire of the control box may
not be in good contact with the motor
wire
3. The rubber sleeve is stuck after it has not
been used for a long time or is dried out
1. Check whether the motor pin is falling o
and/or whether the gearbox is stuck
2. Check to see if the wire card is loose
3. Remove and clean the rubber sleeve,
add detergent or petroleum jelly, then
reinstall it; or replace the rubber sleeve
C. Paint suddenly stops flowing
while sprayer is in use
1. The nozzle is clogged due to impurities
in the paint, or excessive particle size
of the paint, i.e. nozzle is too small
2. Paint is clogged inside the mortar hose,
which may not have been pre-lubricated
1. Stop the mortar sprayer, turn o the
material switch on the gun, remove the
texture nozzle, clean the air duct of the
nozzle and change the air volume setting
2. Clean the mortar and the bottom of the
coater, refill the hopper and use the pump
to circulate the paint until the bubbles in
the paint subside
NOTE: Always top up the hopper with
sucient material. Running the pump dry
may cause overheating and clogging.
D. The pressure on the pressure
gauge rises above 40 bar
1. Paint viscosity is too high
2. Mortar hose diameter is too small
3. Mortar hose is too long
4. Paint is jammed in mortar hose, which
may not have been pre-lubricated
1. Dilute paint
2. Use a larger diameter mortar hose
3. Use a shorter mortar hose
4. Decrease mortar hose pressure:
• Set selector switch to 90 pressure
• Repump paint back into release hopper
• Disconnect the mortar hose and rinse
with water
• After the blockage is removed,
reconnect the mortar hose
E. Not enough paint is being
pumped by the post-mortar
coater
1. Delivery volume selected is too low
2. Mortar hose diameter is too small
3. The screw sleeve is worn
4. The nozzle is too small and the gun
hole is blocked
1. Increase the delivery volume
2. Use a larger diameter hose
3. Replace screw sleeve
4. Remove, clean and reattach nozzle,
then increase the orifice size