Alfa Laval Toftejorg MultiJet 50, Instruction Manual

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6 Maintenance
6.2 Preventive Maintenance
In order to keep your tank cleaning machine servicing you as an efficient tool in your tank cleaning operations, it is essential to
maintain its high performance by following a simple preventive maintenance programme, which will always keep your tank
cleaning machine in good condition.
Good maintenance is careful and regular attention!
The following recommended preventive maintenance is based on tank cleaning machines working in average conditions.
However, you will appreciate that a tank cleaning machine, which has a rough and dirty job to do, will need more frequent
attention than one working in ideal conditions. We trust that you will adjust your maintenance programme to suit.
Always use only proper tools. Use standard tool kit. Never force, hammer or pry components together or apart. Always
perform all assembly/disassembly steps in the order described in this manual.
Never assemble components without previous cleaning. This is especially important at all mating surfaces. Work in a
clear well lighted work area.
Note: Recommended tightening torque for all screws: 4-5 Nm.
Every 300 working hours
1. Disassemble machine as described on the following pages.
2. Clean material build-up and deposits from internal parts with chemical cleaner and fine abrasive cloth.
3. Check Slide bearings (pos. 30 on the cross sectional drawing, page ) for wear. If hole is worn oval to max. diameter more
than 12.4 mm, Slide bearing should be replaced. If end face of Slide bearing is worn more than x mm into Slide bearing, it
should be replaced.
Under Turbine shaft: x = 1.5 mm
At Horizontal shaft: x = 0.5 mm
4. Check Collar bushes (pos. 12) in Gear frame. If holes are worn oval to max. diameter more than 15.4 mm, Collar bush
should be replaced. How to replace Collar bushes, see page 32.
Note: Timely replacement of Slide bearings and Collar bushes will prevent costly damage to the gear box.
5. Check Worm wheels (pos. 13 and pos. 14). If extremely worn, they should be replaced.
6. Check Main bush (pos. 6). If worn oval to max. diameter more than 15.4 mm, it should be replaced.
7. Assemble machines as described in the following pages.
8. Check that the machine is in operating condition by inserting hex Screwdriver (tool No. TE134A) in screw in top of Turbine
shaft and easily turn Turbine shaft clockwise. If any resistance is recognized, the machine should be disassembled to
localize the cause.
Apart from the parts specifically mentioned above, all the remaining wear parts should regularly be inspected for wear. Which
parts that are wear parts appear from Reference Lists of Parts, page 48 and 50.
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