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9. MAINTENANCE
ATTENTION! Before maintenance, the dock leveller must be fixed in raised position using a maintenance supports beam.
Hydraulic fluid changing :
1. Remove the main cylinder from upper deck and truss.
2. Push lifting cylinder manually, hydraulic fluid back into the tank.
3. Remove the hose from lifting cylinder and put it into a suitable vessel.
4. Press the «Up» button, so that fluid can flow from the tank to capture vessel.
5. Once the fluid begins to splash, release the button and fill fresh fluid into the tank. When filling another type fluid, first rinse
tank is a new hydraulic fluid (as described above).
6. Mount the hose on the cylinder back.
Maintenance frequency depends on the particular conditions of the operation.
Warning! If the dock leveller has not been used for more than 6 months, it is necessary to replace the oil in the hydraulic sys-
tem. Otherwise, electro-hydraulic dock leveler may not work properly.
When servicing the dock leveller, always check:
1. Signal yellow-black stripping on right/left side: the possibility of perception.
2. Supporting structure: a state of welds, reinforcement profiles, joints, rollers, hinges and corrosion.
3. Electrical Equipment:
Control unit: the state, work, smooth running, protection from unauthorized and erroneous command input.
Emergency switch: designation, the state, work, smooth running.
Wires: damage, mounting, protection from the tension.
Limit switches: the state, work (if presented).
4. Hydraulic system and hydraulic equipment: tightness, hydraulic fluid, hose connections, mounting, injury, deformity,
corrosion.
Hoses and hose couplings: fixing, the damage, brittleness.
Cylinders: mounting, crack, the state of connections of hoses, the state of the surface of the piston rod.
5. Safety devices
Safety shatters work. Door limit switch work (if presented).
General — Inspection for visible damage Daily
General — State of the welds
— State of reinforcement profiles
— Rust
— Safety shatters working
1 time in 6 months
More often if necessary
Joints — State of joints and lubrication (Lithol-24) 1 time in 6 months
More often if necessary
Hydraulic system — State of hydraulic system
— Leaking
— Checking hoses and cylinders damage (cracks, corrosion)
Once a year
More often if necessary
Electrical Connections — Inspection of all electrical connections 1 time in 6 months
More often if necessary
Working fluid — Level of working fluid
— Changing of working fluid 1 time in two years
Monthly
More often if necessary
REGULAR INSPECTION/SERVICE
MAINTENANCE
WARNING NOTICE!
Do not enter under
this platform unless
it is mechanically
locked.
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