SOP for Preventive & Routine Maintenance of Strip Packing Machine

OBJECTIVE

To reduce downtime.

To minimize breakdown time and maintenance cost of equipment to obtain optimum performance.

SCOPE

The service covers general maintenance for long intervals (yearly/monthly) and short intervals (daily/weekly).

RESPONSIBILITY

Engineering Technicians: responsible for monthly and yearly interval checks.

Operators: responsible for daily and weekly checks.

Assistant Manager Engineering, Production Manager, and Production Supervisors: responsible for making machines available for preventive maintenance in time.

PRODUCTION

Routine Maintenance Daily

Check the following before operating the machine.

1. Inspect and clean product contact parts: hopper, chutes, release pin, and bowl.
2. Inspect and clean foil running shafts, and sealing rollers.
3. Check/record the speed of machine output and temperature of sealing rollers.
4. Check vibrator operation, feeding, vertical and horizontal cuttings adjust if necessary.

Routine maintenance weekly

1. Checks, cutter assembly guide bolts, tighten if loose.
2. Check the grub screw on the cutter drive bevel gear set, tighten if loose.
3. Check connection in a dimmer state, heater terminals and body earth connections tighten if loose.

Monthly preventive maintenance (long interval checks).

1. Check, motor fixing bolts, gearbox fixing bolts, gear box bearing brackets bolts, main drive shaft housing bolts, and cutter drive bolts, tighten if loose.
2. Check camshaft bearing housing bolts, brush shaft housing bolts, grub screw on roller shaft drive sprocket, and tighten if loose.
3. Check, grub screw on feed disc drive sprocket, feed disc-drive shaft bearing housing, check lock nut on helical spur for disc drive, feed chute holder bracket bolts, brush shaft gears and sprocket grub, screws – tighten if loose.
4. Check/tighten heater pipe collars.
5. Check/tighten foil holder bracket bolts, and check/tighten brake band.

ELECTRICAL CHECKS

Monthly (long interval) checks.

1. Check/clean/tighten connections in the motor terminal box, and motor contactor O/L remote control box on/inch/off button elements.
2. Check/clean/tighten vibrator parts, socket terminal, control box terminal, and control switch, and replace if necessary.

General Electrical

1. Check terminal strip, neutral, mains, and body switch connections

ALSO READ: SOP on Breakdown Maintenance

LUBRICATION

Oil

1. Cutter wedge block – daily
2. Release pin shaft bush – daily
3. Foil holder pipes assembly – weekly
4. Release pin guide assembly – weekly.
5. Foil holder pipes – weekly.
6. Check and top up the oil in the gearbox.
7. Replace oil in the gearbox after 1000 hours of operation.

GREASING

• Check, clean, grease, conveyer, drive bearing housing – multipurpose grease.
• Check, clean, grease-cutting shaft main housing bearing, main shaft bearing, cutter center pivot pin, release pin actuator arm – multipurpose grease.
• Check, clean, and grease camshaft bearing housing, and roller shaft bearing housing: - Heat-resistant grease.
• Clean and apply grease to all shafts, idlers, gears and sprockets, and chains with – multipurpose grease.

REVISION HISTORY

Nil

ALSO READ: SOP for Guidelines for Engineering and Maintenance