Apach BAKERY Line L 120, Инструкция по эксплуатации и техническому обслуживанию

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5. SYSTEM STARTING
Where pump-suction cocks are fitted, make sure that they are open. The pump rotation direction must be as
prescribed and coincide with the electric-motor rotation direction. The piston pump-body must be filled through
the draining duct. Set the maximum pressure valve or by-pass valve to venting in order to start the pump loadless.
Start the electrical pulse motor to help pump priming until the noise becomes regular.
Gradually increase the pressure regulation to fill the system, proceed to bleeding air from the cylinders by means of
suitable bleeder screws or simply connection fittings. Air emission is revealed by the presence of foam in the oil.
The bleeding and fitting-tightness check operation must last no less than ten minutes. After rechecking the tank oil
level, bring the system to the required performance standard.
6. MAINTENANCE
Maintenance is an issue which must be taken into account ever since the designing stage, by planning for pressure
measurements points, cocks helping filter replacement and accessibility to the various components.
Ordinary maintenance must be carried out once a week, with the following operations:

External cleaning

Checking tightness of fittings and components

Checking tank oil level, air filter (tank breathers)

Temperature in the tank and components

Precharge pressure of accumulators using appropriate instruments

Once every six months, cleaning of the heat exchanger in relation to the type of water used.
Oil replacement depends on various factors, such as working temperature, pressure and pollution level.
It is usually recommended to replace the oil after 3000 to 5000 hours of operation, then to clean the tank and, if
necessary, wash the system.
Extraordinary maintenance is difficult to forecast, since the various components have different working lives, for
example:
pumps = 5000 to 10000 hours
piping = 10000 hours or depending on wear
solenoid valves = 5 million manoeuvres
cylinders = 1 million strokes
It is very important to avoid too much stress on the various components, when not required by performance
standards, i.e. the load can absorb 80 bar, the overpressure valve must not be brought above an additional 15-20%.
For fast maintenance, it is advisable to be equipped with a set of essential spare parts, which must be continuously
replaced.