Simpro Microstacker, Руководство пользователя

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User Manual // Simpro Microstacker
Original Instructions // English // v2.0 // August 2022 // Page
22
4.5 Hydraulic System
4.5.1 Powerpack
The hydraulic powerpack is supplied as a complete unit. The motor, pump, oil tank, and all
control valves are mounted into the centre manifold.
4.5.2 Control valves
The hydraulic system has four primary control valves.
4.5.2.1 Check valve
This is a one-way valve which prevents oil from flowing back through the pump when the
motor is stopped.
4.5.2.2 Pressure-relief valve
This is a spring-loaded valve which allows oil to flow back into the reservoir when the
hydraulic pressure exceeds its rated limit
– usually from lifting an overweight bin, or from
operating the machine when the carriage is already at the top of the cycle.
If this valve is adjusted incorrectly, the Microstacker might fail to lift bins that are within the
machine’s Safe Working Load (150kg) . Should this occur, contact your Simpro agent for
instructions on how to adjust the pressure-relief valve.
4.5.2.3 Lowering valve
This is a solenoid-operated valve which opens when the LOWER buttons are pressed and
allows oil to flow back to the reservoir, lowering the carriage.
4.5.2.4 Lowering-speed valve
This is a pressure-compensating valve which limits the flow rate of oil passing through the
lowering valve, regulating the descent speed of the carriage (regardless of bin weight).
4.5.3 Lift Ram
The lift ram is a single-acting displacement type, very robust and reliable, but easy to
maintain should the need arise. A hydraulic line runs from the powerpack to the lift ram.
4.5.4 Open Ram
The open ram is a single-acting displacement type, very robust and reliable, but easy to
maintain should the need arise.
A flexible hydraulic line runs up the mast from the powerpack to the open ram.
4.5.5 Hydraulic fluid
The hydraulic system is designed to use mineral oil-based hydraulic fluid with a viscosity
grade of 22 (ISO VG22). Fluid with a higher viscosity grade may be used, but will reduce the
lowering speed of the carriage and increase the likelihood of jams.
The hydraulic fluid should have physical lubricating and chemical properties as specified by:
-
Mineral Oil Based Hydraulic Fluids HL (DIN 51524 part 1)
-
Mineral Oil Based Hydraulic Fluids HL P (DIN 51524 part 2)
Ensure the carriage is completely lowered before replacing the hydraulic fluid.