Manual

25
10.3 Hydraulic units with electric motor
Visual Inspection
Hydraulic power units
• Check that all hydraulic connections are still tight
• General tightness, no leaks (sweated oils do not have any infl uence on the function),
• Is there any damage apparent to the motor, valve blocks or on the casing?
• Side plates present and tightened,
• Presence and legibility of the identifi cation plate, all actuation signs, instruction signs,
markings and warnings,
• The presence and perfect condition of all covers (e.g. exhaust defl ector),
• All fl uid levels are within the specifi ed tolerances,
• ON/OFF switch in proper condition and not damaged,
• Couplings must be easy to couple,
• Dust protection caps must be available,
• All attached electrical parts (e.g. cables and plugs) are present and undamaged.
• Are the extending handles undamaged and functional
Functional test
• No unusual noises
• Tests for maximum load (connect to control table and apply pressure with the valve
switching lever (a unit must not be connected to the control table) until the maximum
operating pressure is reached. Pressure read-off via pressure gauge on control table).
10.4 Hoses (optional pairs of hose extensions)
Visual Inspection
Extension hoses
• Visual check for damage , cracks and leaks,
• Age check of the hoses (replace after latest 10 years),
• Hose connecting fi ttings with couplings on extension hoses tightly connected and not
leaking,
• Couplings must be easy to couple,
• Dust protection caps available?