Lesson 1Typical instrumentation and monitoring points: pressure, flow, temperature, contamination sensors, and vibration/noise sensorsThis part describes tools for watching press hydraulics, covering pressure, flow, temperature, dirt, vibration, and noise. It covers where to place sensors, their ranges, signal types, and how data helps in checking problems and planning ahead for maintenance in Botswana factories.
Pressure sensor ranges and fitting spotsFlow checks for pumps and mover partsOil heat sensing in tanks and key pipesDirt counters and clean check pointsShake and sound sensors on pumps and enginesLesson 2Central hydraulic power unit (HPU) layout: reservoir, pump(s), prime mover, heat exchanger, auxiliary systemsThis part shows the main HPU setup for 250-bar presses, covering tank design, pump and engine setup, intake and return paths, heat changers, and extra systems for steady, quiet, and simple servicing in Botswana manufacturing plants.
Tank size, barriers, and air removal featuresPump fitting, lining up, and intake pipe designMain engine choice and link setupsReturn pipe paths and foam reduction waysFitting coolers, filters, and connectorsLesson 3Thermal management: oil-air coolers, flow paths, thermostatic bypass valves, and heat load estimationThis part looks at heat control in high-pressure press systems, including heat sources, oil-air cooler choice, flow routes, auto heat bypass design, and heat amount guessing to keep oil good and parts reliable in hot Botswana conditions.
Heat sources in press hydraulicsHeat amount guess and work cycle checkOil-air cooler size and work curvesCooler spot, flow routes, and pipe setupAuto heat bypass valve choice and adjustLesson 4Directional control: proportional directional valve types, spool dynamics, flow control and electrohydraulic interfacesThis part studies adjustable direction valves in 250-bar presses, covering types, spool movement, flow control, and electric-hydraulic links for exact move control, repeat actions, and safe stop in Botswana operations.
Valve build and adjustable drive methodsSpool shape, overlap, and flow control actionMove response, lag, and shake tricksBuilt-in electrics, drivers, and signal rulesSafe stop spots and emergency plansLesson 5Filtration and contamination control: filter types, locations (suction, pressure, return), bypass and monitoringThis part deals with filter plans for high-pressure presses, covering filter kinds, ratings, and spots on intake, pressure, and return lines, plus bypass valves, block signs, and clean goals for long part life in dusty Botswana environments.
Clean goal classes for press partsIntake screens vs low-pressure filtersHigh-pressure filter choice and sizeReturn line filters and side kidney unitsBypass valves and pressure difference signsLesson 6Energy storage and smoothing: accumulator types, placement, sizing and safety devicesThis part explains hydraulic accumulators for energy hold and shake damp, covering bag, piston, and membrane types, spots, pre-fill, size for press cycles, and safety tools needed by rules in Botswana safety standards.
Accumulator kinds and build detailsEnergy hold counts for press cyclesPre-fill pressure choice and checkSpot for shake damp and quick responseSafety blocks, shut valves, and rulesLesson 7Fluid circuits and schematic interpretation: common arrangements for forming presses, actuator piping, and bleed/vent pathsThis part builds full fluid paths for forming presses, teaching diagram signs, common press setups, mover piping, bleed and air out paths, and how to read, check, and record hydraulic plans for projects in Botswana.
ISO hydraulic signs and line waysUsual single and double mover press pathsClamp, form, and return stroke setupsBleed, air out, and air removal plansReading and checking full press diagramsLesson 8Power transmission elements: variable displacement axial piston pump principles and control interfacesThis part focuses on changeable size axial piston pumps in 250-bar presses, describing work rules, tilt plate control, adjuster choices, and electric links that match flow, pressure, and energy save in Botswana power needs.
Axial piston pump work rulesTilt plate tools and stroke controlPressure and load sense control choicesElectric-hydraulic pump control linksStart, setup, and fix problemsLesson 9Pressure control components: relief valves, pressure compensators, sequence and unloading valvesThis part checks pressure control parts in press paths, including relief valves, pressure adjusters, sequence valves, and unload valves, explaining settings, steady work, links, and roles in safety and energy save for Botswana use.
Main system relief valve size and setPump pressure adjuster works and tuneSequence valves for step cylinder worksUnload valves for low loss idle workLinks of many pressure control tools
