Elixir Department: SOP for Troubleshooting of Mixing Equipment – V 2.0

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Elixir Department: SOP for Troubleshooting of Mixing Equipment – V 2.0

Standard Operating Procedure for Troubleshooting of Mixing Equipment in Elixir Manufacturing

Department Elixir Department
SOP No. SOP/ELX/145/2025
Supersedes SOP/ELX/145/2022
Page No. Page 1 of 10
Issue Date 11/04/2025
Effective Date 15/04/2025
Review Date 11/04/2026

1. Purpose

To establish a standardized procedure for identifying, diagnosing, and resolving common issues related to mixing equipment used in the manufacturing of elixirs to prevent batch failure, equipment downtime, and safety hazards.

2. Scope

This SOP applies to all types of mixing equipment used in the Elixir Department, including fixed tank agitators, portable mixers, inline homogenizers, and jacketed vessel stirrers.

3. Responsibilities

  • Production Operator:
    • Identify equipment irregularities and report promptly.
    • Log all abnormal observations in the Equipment Logbook.
  • Engineering Department:
    • Diagnose and resolve mechanical and electrical faults.
    • Document corrective actions in the Maintenance Logbook.
  • QA Officer:
    • Assess the impact of equipment failures on product quality.
    • Review deviations and ensure CAPA implementation.
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4. Accountability

The Engineering Head is accountable for ensuring timely resolution of equipment malfunctions. The Production Head is responsible for ensuring safe operation and reporting issues promptly.

5. Procedure

5.1 Common Issues and Diagnosis

  1. Agitator Not Starting:
    • Check for power supply connection and circuit breaker status.
    • Verify that emergency stop button is released.
    • Inspect control panel for error messages or fuse failures.
  2. Unusual Noise or Vibration:
    • Stop the mixer immediately.
    • Check for loose shaft couplings, damaged bearings, or bent impellers.
    • Inspect alignment and balance of motor and drive assembly.
  3. Mixing Speed Fluctuations:
    • Check VFD (Variable Frequency Drive) for inconsistent signals.
    • Inspect motor for overheating or voltage fluctuations.
    • Verify mixer RPM setting matches the batch requirements.
  4. Leakage from Mechanical Seal:
    • Stop the mixer and inspect seal housing for wear or misalignment.
    • Check for seal dryness or lack of lubrication.

5.2 Immediate Actions by Operator

  1. Stop the operation using the control panel or emergency stop.
  2. Label the equipment as “OUT OF SERVICE.”
  3. Inform the Engineering and QA departments immediately.
  4. Record the issue in the Equipment Logbook (Annexure-1).
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5.3 Corrective Action by Engineering

  1. Inspect the issue based on operator’s report and conduct root cause analysis.
  2. Perform required repairs or part replacements as needed.
  3. Verify correction through dry trial and test run with water or dummy material.
  4. Ensure functional restoration before release to production.
  5. Record actions in the Equipment Maintenance Log (Annexure-2).

5.4 Documentation and QA Review

  1. QA shall evaluate if any deviation or impact on product quality occurred.
  2. If required, QA will raise a deviation report and request CAPA from concerned departments.
  3. QA shall verify and approve the equipment before restarting the batch operation.

6. Abbreviations

  • SOP: Standard Operating Procedure
  • QA: Quality Assurance
  • VFD: Variable Frequency Drive
  • CAPA: Corrective and Preventive Action

7. Documents

  1. Equipment Logbook (Annexure-1)
  2. Equipment Maintenance Log (Annexure-2)
  3. Deviation Report (if applicable)
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8. References

  • 21 CFR Part 211 – Equipment Cleaning and Maintenance
  • WHO GMP Guidelines – Equipment Validation
  • ICH Q9 – Quality Risk Management

9. SOP Version

Version: 2.0

10. Approval Section

Prepared By Checked By Approved By
Signature
Date
Name
Designation
Department

11. Annexures

Annexure-1: Equipment Logbook

Date Equipment ID Issue Observed Operator Name Time of Reporting Initial Action Taken
11/04/2025 MXR-ELX-01 Unusual Noise During Mixing Sunita Reddy 10:20 Stopped and Informed Engineering

Annexure-2: Equipment Maintenance Log

Date Equipment ID Action Taken Replaced Parts Engineer Name Remarks
11/04/2025 MXR-ELX-01 Bearing Adjustment and Shaft Alignment N/A Rakesh Nair Trial Run Successful

Revision History:

Revision Date Revision No. Revision Details Reason for Revision Approved By
01/01/2024 1.0 Initial SOP Release New SOP QA Head
11/04/2025 2.0 Added VFD and deviation protocols Process Update QA Head
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