IMER KOINE 4 Operation, Maintenance And Spare Parts Manual page 26

PROBLEM
Machine does not start WaterWater pressure too low: the pressure gauge indicates pressure
below 2 bar (green led lit?)
Machine does not start Electric current
and compressor does not - No current delivered to connector of site panel (fuses?)
start - No power delivered to machine (defective connector connection?
loose cable?)
- Main switch not turned on
Machine does not start but Electric current
compressor starts - Phases inverted
(blue lamp on=main switchincorrect position?)
- Thermal cut-out switch released
(red lamp on?)
- Start pushbutton not pressed
(start/stop pushbutton lamp on?)
- Mixing chamber open
(start/stop pushbutton lamp on?)
- Mortar pump motor connector not inserted
(start/stop pushbutton lamp on?)
- Low water pressure switch trips on start-up
(water pump switched on ? see also "machine does not start due to
water)
Machine does not start Air
- The air pressure, with jet valve completely open, does not fall below the
minimum pressure value on the machine pressure switch (table1)
Machine does not start Material
- Product too dry in mixing chamber
(mortar pump seized? red lamp on?)
Cell wheel does not start Material
- Material hardened in hopper
- Material too compact in hopper
(machine moved with hopper full?)
Mortar pump and/or cell Electric current
wheel does not start - Starting power voltage insufficient
(red lamp illuminates after a few seconds?)
- Motor faulty
- Faulty cable
- Faulty connector
Machine stops after Water
starting up - Intake filter clogged
- Pressure reducer filter clogged (ref.4, fig.11)
- Water hose too long and/or too narrow
- Water supply insufficient
Machine does not stop Air
and/or compressor does - Air hose defective
not stop (hose cut? Air leaks from couplings?
- Compressor air supply low
- Jet air valve faulty (blocked in open position)
Material flow stops (air Mixing
bubbles) - Mixer not suited to product
- Material humid in mixing cone
Material flow stops Clogging
- Material hose clogged
- Spray jet clogged
Material delivered to jet not Pre-mixed material deteriorated
constant, too hard or too Screw-stator pair worn
liquid Mixer not suitable or worn
Water pressure reducer faulty (ref.)
Water solenoid valve faulty
Water system settings incorrect
Electric cable too long and too narrow
Water increases in mixing Screw-stator pair worn
chamber during operation Pipeline clogging
Water increases in mixing Solenoid valve faulty
chamber with machine
stationary
IMER INTERNATIONAL S.p.A.
KOINE 4/5
CAUSE
26
CORRECTIVE ACTION
- Check that water is delivered from the supply hose
- Check that the water filter is clean
- Check that the water pump is switched on
- If the pump collects from a tank, check that it has been primed and there are no
leaks from couplings
- Check points listed alongside
- Check points listed alongside
- Check that the air hose is not bent or obstructed
- Check that the jet nozzle is perfectly clean
- Initial start-up not performed correctly (see para.11)
- Water flow rate setting too low (see para.11)
- No water delivered to mixing chamber
(water inlet obstructed, water solenoid valve malfunction)
- Check that water does not continue to enter the mixing chamber when the
machine is stationary
- Empty hopper (see para.11) and fill with fresh material
- Ensure that the electric cable section is adequate (see para.10.1)
- Check the current line to the site panel and site panel connector
- Check motors, electric cables and connectors
- Check points listed alongside: clean filters, check for adequate flow rate from the
water hose (at least 10-12l/min if working with lime-cement based plaster, at least
15-20l/min with gypsum based plasters) and replace hose if necessary or collect
water from an auxiliary tank
- Check the air hose and couplings in particular and replace if necessary
- Check air filter (see para.12)
- Check compressor relief valve
- Clean the mixer and if necessary replace with one more suited to products used
- Clean and dry the mixing chamber and restart
- Remove obstruction
- Check points listed alongside
- Replace screw-stator
- Remove obstruction
- Check