1. OBJECTIVE             

1.  To lay down a procedure for Preventive Maintenance of Tablet Compression Machine

2. RESPONSIBILITY                                                  

• Assistant – Engineering    – To follow the SOP

• Executive – Engineering    – To Comply the SOP

3. PROCEDURE           

• Weekly maintenance

• Check the machine rotation with hand wheel, it should rotate freely.

• Check the hydraulic oil, gearbox oil levels, should be 3/4^th of the oil chamber.

• Check the punch lubrication oil level, maintain up to the mark.

• Check the powder conveying system for proper functioning.

• Check all the PU pipes and PU connectors for leakages.

• Lubricate all moving parts with specified lubricant.

• Monthly maintenance

• Check all the movable parts for proper lubrication, if required lubricate them.

• Check the gearbox oil level, Punch lubrication oil level and hydraulic oil levels, if required top up them with specifies lubrication oil up to the mark.
• Check the PMM and feeder motors are moving freely, if required replace the bearings.

• Check the condition of PLC terminals, contactors and relays, if required clean them with CTC.

• Check all the inter locks working and limit switches condition, if required tighten the line connections.

• Check the powder conveying system vacuum unit, if required clean the cylinder and the vacuum assembly.

• Yearly maintenance

• Check the oil seals of the gearbox, if required replace with new seals.

• Drain the gearbox oil and refill with fresh oil up to the mark.

• Check the bearings of all moving parts, brackets and motor, if found any abnormality replace the worn out bearings.

• Check the hydraulic pump oil seals condition, if required replace the seals.

• Check the timing belts condition, if required replace the damaged belt.

• Check all the pneumatic and solenoid valves condition, if required replace the worn out items.

4. ABBREVIATIONS

• PU    :  POLY URETHANE

• PMM:   PRESSURE MAIN MOTOR

• PLC  :  PROGRAMMABLE LOGIC CONTROL

• CTC  :  CARBON TETRA CHLORIDE   

5. REFERENCES

Nil      

6. ANNEXURES

• Annexure-1      Weekly preventive maintenance checklist
• Annexure-2      Monthly preventive maintenance checklist.
• Annexure-3      Yearly preventive maintenance checklist

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