Maintenance - Mepu K-SERIES Operating Manual

7 Maintenance

The dryer's reliability is a crucial factor for ensuring a successful harvest. Possible malfunctions can
cause even significant risks. The best way to avoid risks is to ensure that the unit is maintained
properly.
When cleaning the unit, turn the main switch to OFF.
Maintenance and cleaning operations
Maintenance and cleaning operations can be divided as follows:
1. Autumn maintenance, lubrication and cleaning immediately after the drying season.
2. Test running and checks always before the start of a new season.
3. Checks and lubrication during the drying season.
Clean the surfaces, which are not scrubbed clean by circulating grain with a scraper or a brush. At
the same time check and clean the internal surfaces of the feeding equipment and the feed rollers, if
necessary. Normally the inside of the drying cells does not require cleaning. Clean the exhaust ends
of the elements (side air channels) and the exhaust air channel. At the same time check that no
debris has drifted into the hot air channel between the furnace and the dryer (there is an inspection
door at the centre rear of the unit). Finally make sure that no loosened deposits (debris) is left in the
cells. Debris can be removed from the cells by running the fan for a couple of minutes at full
capacity. Clean the bottom and top end of the elevator. Carefully check the grain pipes in order to
detect any leaks and worn sections.
During the autumn maintenance it is advisable to decide on any possible additions or modifications
of the grain pipeline, since the fact of whether they are needed is fresh in the memory. Moreover,
the need for any spare parts is also advisable to establish already in the autumn.
Tyres
Check the tyre pressure, if necessary, at least before setting off for a longer distance. At the same
time check the tightness of wheel nuts on rims and the fastening of the shafts. It is advisable to
protect the tyres against sunlight. The correct tyre pressure is 3 bar.
Bottom trough
Check the sides of the bottom trough and clean, if necessary, though the inspection door at the front.
Check the bottom auger and clean, if necessary. Also check the bottom aspirator and clean, if
necessary.
Feeding apparatus
Oil level in the feeding apparatus's gear motor does not require checking. You may check the gear
motor visually to detect any possible oil leaks in the motor. If a heavy leak is detected, it is
advisable to replace the gear.
Lubricate the chains and the lever devices as well as the rotation reversing wheel with engine oil
SAE 20...30 or Universal. If necessary tighten the chain, but avoid overtightening it. Lubricate the
feeder shaft bearing with grease after the drying season (once a year). Lubrication should be
performed carefully to avoid damaging the bearing gaskets.
Elevator
Before the beginning of the drying season and at least during the season check:
- The condition and the tightness of the elevator drive belts
- The fastening and condition of the pre-cleaner
- The tightness of the elevator chain
33 D00125-2019_EN