MAC C275A, Manual

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34
00_Manutenzione-05 200203
GBR
FAQ
N° INCONVENIENCES
POSSIBLE CAUSES HYPOTHESIS BREAKDOWN SOLUTIONS
1
THE BOLLARD DOESN’T GO UP
(presence of air in the circuit)
Low oil level in the tank damaged seals Replace the seals
Add oil
Manual unlock is open Manual unlock is open Close the manual unlock
electric valves are open electric valves are open or damaged Check electric valve voltage coil
electric safe es are open electric safe es are open or damaged Fix / replace electric safe es
(photocells, sensi ve head, magne c
coils, emergency bu on, clock)
Oil leaks Break of the hydraulic circuit Fix the circuit
Incorrect sense of rota on Incorrect limit switch connec on Re-wire up magne c limit switch
Reversed limit switches Incorrect electric engine connec on
Re-wire up the electric engine on the
electronic programmer
Missing power source switch turned on Re-ac vate the disconnector bu on
Faulty electronic programmer Replace the electronic programmer
Faulty fuses High absorp on peak
Replace the fuse with another
suitable
Low poten al diff erence Short-circuits on the line Check and fi x the breakdown
Engine, electric valve inputs, output
24Vac, traffi c light
2
IRREGULAR BOLLARD ASCENT
(pump in fault of fl ow)
Pump not completely immersed in
the oil
Blocked aspira on or not immersed in
the oil
Check the oil level
Air bubbles in the circuit Faulty aspira on Check the oil cleaning
dirty oil Oil with many work hours
Replace the oil
Oil with solid bodies in it
Manual unlock is open See point 1 See point 1
electric valves are open Electrical valve broken Replace the electrical valve
Mechanic fl aw
Low voltage small cable section Replace the cable
Maneuver a er opening the manual
unlock
Air aspira on in the pump
The problem disappears with a
second opera on
3 SLOW BOLLARD ASCENT
(insuffi cient pressure)
(s cky oil at room temperature)
Incorrect maximum pressure
Correctly calibrate the valve
consul ng “regula on of the bollard
rising force”
Air presence in the circuit (the bollard
doesn’t go up)
See point 1 See point 1
Pump failing in payload Worn pump
(Irregular bollard ascent) See point 2 See point 2
Too viscous oil Very compact oil Replace the oil type
Too liquid oil Too high temperature Replace the oil
Excessive leaks/ breaks in the circuit Circuit leaks Check the circuit
Break of the O-Ring in the control unit
runner
Replace the O-Ring where required
Incorrect supply voltage Faulty electric programmer
Sequen al programming for the
mul ple ascent of the bollards in the
electrical programmer
Not ghtened screws ghten screws
Low fuse voltage Check power cable
problem with the distributor Check with the distributor
Insuffi cient condenser broken condenser
Replace condenser or augment it
too li le condenser
Fric on guide rails too ghten guide rails “regula ons of bollard guide rails”
4 CLOSE BOLLARD DOESN’T GO
DOWN
Insuffi cient condenser See point 3 See point 3
Cylinder high pressure at the limit
switch
Too tense pressure valves
Correctly calibrate the valve
consul ng “regula on of the bollard
rising force”