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Problem and solutions
8.1
Rev. 3
12-2004
2
Troubleshooting
Situation
Cause
Solution
POWER ON button does not switch on
Emergency Stop button pressed
Pre-stretch door open (only with PS, PST, SE carriage)
Fuse
Unlock by turning anticlockwise
Close door and press RESET button
Check and maybe replace
Turntable does not turn when pressing START
Wrong speed setting in wrapping programme
Turntable inverter motor
Check TURNTABLE SPEED setting
Check
Film tension not regular
Wrong film tension setting
Electronic check chart damaged
Dancer potentiometer
Check potentiometer “reg. film tension”
Check and replace
Check and replace
Carriage does not stop at top of pallet but continues to
top of column
Pallet photocell
Adjust sensitivity
Platen does not go down
Platen disabled
Electric valve 3/2 – 1/4”
Pneumatic cylinder
Check control board set-up (see electrical drawing)
Check and/or replace
Check regulators on cylinder and/or replace
Carriage puts too much film on lower/upper part of
pallet
Programmed “LOW/HIGH TURNS” number too high
Check no. of set turns on operator panel
Carriage ascent/descent speed too slow / fast
Carriage speed set on wrong value
Adjust speed using operator panel
Machine does not stop to put cap
Wrong wrapping programme
Check no. of chosen programme. Programmes for cap are
n. 2 and 4
Carriage puts too much film on upper part of pallet
Programmed “HIGH TURNS” number too high
Check no. of set turns on operator panel
At end of wrapping cycle pallet does not stop in
unloading position
Cycle end placed under turntable
Adjust distance between sensor and turntable cam (only if
there is proximity switch)
Turntable starts before platen comes into contact with
pallet
Wrong setting of platen descent time
Adjust delay timing on operator panel
At end of wrapping cycle platen does not go up
Pneumatic valve 3/2 – 1/4”
Pneumatic valve 5/2 – 1/4”
Single direction valve 1/4”
Check / replace
Check / replace
Check / replace
Pressure of platen disc on pallet is too high
Pressure regulator
Adjust / replace
Opening carriage door machine does not stop
Safety cycle end
Check links and replace hinged cycle end if necess
Turntable disc not stable and / or stops
Chain too loose
Adjust chain stretcher
Film slips on rubber coated rollers
Dirty rubber coated rollers
Clean with alcohol
Strange noise
Loose chain
One or more wheels under the turntable are broken due
to wear
Worn out turntable motor reducer
ReducerAdjust tension or replace chain
Replace wheels
Replace reducer
F2 Prestretch motor alarm
Mechanical issue on prestretch
Motor thermal protection
Prestretch board
Check
Check
Check and may be replace
F3 No pallet
Photocell out of sensivity
Photocell connection
Photocell
Adjust sensitivity
Check
Check and may be replace
F4 Film reel door open
Film reel door open
Film reel door switch connection
Film reel door switch
Close film reel door
Check
Check and may be replace
F5 Turntable engine alarm
Mechanical issue on the turntable
Motor thermal protection
Fuse
Check
Check
Check and may be replace
F6 Rewound belt alarm
Mechanical issue on the carriage
Parachute
Check
Check
F7 Carriage lifting engine alarm
Mechanical issue on the carriage
Motor thermal protection
Fuse
Check
Check
Check and may be replace
F8 Obstacle present in turntable caves access area
Object inside caves access area
Pallet not detected by photocell
Alignment photocell-reflector
Photocell connection
Photocell
Remove object
Adjust sensitivity
Align photocell -reflector
Check
Check and may be replace
F9 Carriage limit switch alarm
Lower limit switch distance
Lower limit switch connection
Lower limit switch
Upper limit switch distance
Upper limit switch connection
Upper limit switch
Set distance between proxy-cam
Check
Check and may be replace
Set distance between proxy-cam
Check
Check and may be replace
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