SOP Title: Operation, Cleaning and Calibration of Hot Plate
- Objective:
To lay down the procedure for Operation, Cleaning and Calibration of Hot Plate.
- Scope:
This SOP is applicable for Operation, Cleaning and Calibration of Hot Plate located in Quality Control Laboratory.
- Responsibility:
- Quality Control: To prepare and review the SOP. To follow the procedures laid down for Operation, Cleaning and Calibration of Hot Plate as per this SOP.
- Engineering Department: To carry out preventive maintenance as per schedule and procedure defined.
- Quality Assurance Department: To review and approve the SOP and Annexures.
- Accountability:
Head Quality Control Department, Head Quality Assurance Department.
- Procedure:
| 5.1 | Safety Precautions/Instructions: | |||||||||||||||
| 5.1.1 | Ensure all the electrical connections are properly earthed. Ensure the power plug of the hot plate is fixed in the socket properly. | |||||||||||||||
| 5.1.2 | Wear personal protective equipments such as safety glasses, hand gloves during operation of instrument. | |||||||||||||||
| 5.1.3 | Ensure that the hot plate switch is working properly by switching “ON” the hot plate. | |||||||||||||||
| 5.2 | Operation Procedure: | |||||||||||||||
| 5.2.1 | Check the validity of Calibration before starting any operations. | |||||||||||||||
| 5.2.2 | Introduction to the Keys
Thermostat knob: To increase or decrease temperature of the hot plate. Heater knob: position 1 for low, position 2 for medium position 3 for high |
|||||||||||||||
| 5.2.3 | Switch ON the main switch of hot plate. | |||||||||||||||
| 5.2.4 | The red light indicator on the equipment will glow. | |||||||||||||||
| 5.2.5 | Ensure that the rectangular surface of the hot plate is clean and dry. | |||||||||||||||
| 5.2.6 | Keep the sample solution required for heating on the hot plate. | |||||||||||||||
| 5.2.7 | Adjust the required temperature using the knob provided on the front side of the equipment by rotating clockwise direction. | |||||||||||||||
| 5.2.8 | The green light indicator on the equipment will glow after attaining required temperature. | |||||||||||||||
| 5.2.9 | Care should be taken that the solutions should not overflow on the hot plate. | |||||||||||||||
| 5.2.10 | After use, switch OFF the main switch. | |||||||||||||||
| 5.3 | Cleaning Procedure: | |||||||||||||||
| 5.3.1 | Switch OFF the main switch. | |||||||||||||||
| 5.3.2 | Allow to cool and clean with lint free cloth. | |||||||||||||||
| 5.4 | Calibration Procedure: | |||||||||||||||
| Frequency: Once in a year by external agency or after carrying out any major maintenance work. | ||||||||||||||||
| 5.4.1 | Calibration is carried out by external agency as per SOP number “Calibration of Instruments and Equipments”. | |||||||||||||||
| 5.4.2 | Refer Annexure for calibration test to be performed and acceptance criteria.
|
|||||||||||||||
| 5.4.3 | Generate the A. R. No. on the “Instrument/Equipment Calibration Register” as per SOP and give requisition to QA department for calibration formats of instruments/equipments on the due date of calibration. | |||||||||||||||
| 5.4.4 | For issuance of calibration report refer SOP “Control of documents, Preparation, Approval, Issuance and Maintenance. | |||||||||||||||
| 5.4.5 | If any breakdown occurs, follow procedure as per SOP “Calibration of Instruments and Equipments”. | |||||||||||||||
- Definitions / Abbreviations:
- Definitions:
- Breakdown: Any activity leading to operation of instrument/equipment other than the set parameters or unusual sound or vibration observed in the instrument/equipment.
- Calibration: Tests performed to ensure that the instrument/equipment is functioning as per set parameters. These tests are performed as per predefined frequency and also after any major repair or replacement of parts.
- Preventive Maintenance: Maintenance activity performed to ensure that the equipment will function smoothly and to avoid breakdowns. These activities are performed as per predefined frequency.
- Abbreviations:
| Abbreviation | Expansion |
| SOP | Standard Operating Procedure |
| QC | Quality Control |
| QA | Quality Assurance |
| No. | Number |
| A. R. No. | Analytical Reference Number |
*Note – Ready to use SOP available in “DOWNLOAD” Section.