Refridgerant Auto Purge Safe Work Procedure
Page 1 of 7 / WSHMS-02C-SWP-040
Division: /

RETSD

/

Analysis By:

/

Kildonan-East Staff

/

Date:

/ April 4, 2011
Department: / Kildonan-East Collegiate /

Supervisor:

/

Frequency:

/ Hourly

Job Title:

/

Climate Control

/ Approved By: /

JSA Number:

/ CC 26

Job Title:

/ Auto Purge Instructions / Job Performed By: /

Teacher and or students

Required Personal Protective Equipment: CSA approved safety goggles, CSA approved steel-toed footwear and glove protection required.

GENERAL NOTES: No lighters, matches or cell phones are allowed in the shop area. Long necklaces, bracelets and rings should be removed. Long necklaces, bracelets and rings should be removed. Long hair should be tied back. Strings and hoods hanging from pullovers/sweaters should be removed.

NOTE: The purge process must be done before disconnecting the discharge hose from the Recover XL/XLT.

Job Safety Analysis:

Step / Description / Hazard / Controls
1 / Ensure clean work area, check for any flammable or combustible materials. / Fire, Explosion. / Good Housekeeping, keep area clean, clear away debris. Ensure that flammable or combustible materials are moved away before starting work. Make sure surface is clean and dry.
2 / Instructor must first visually inspect the tanks and project before recovering the gas. / Exposure of gas in the environment. Transfer of wrong gas causing major damage to the Yellow Jacket System. / Instructors to inspect the project before the students continue.
3 / Make sure the hoses for handling the refrigerant are 3/8”. The hoses should be the minimum length required for each job and equipped with a shut-off device (such as the compact ball valve). / Reduce the likelihood of refrigerant leaks to the atmosphere. / Check the hoses and the shut off valves before starting the process.
4 / Ground all equipment. Plug the recover XL/XLT into a properly grounded receptacle using the appropriate plug. / Electrical short or chock may occur. / Check plug and receptacle before continuing.
5 / Check the power cord for any nicks or tares in the cord. / Electrical short or shock may occur. / Make sure there aren’t any tares or cutes in the power cord.
6 / Do not pressure test with compressed air. Some mixtures of air and refrigerant have been shown to be combustible at elevated pressures. / Combustible at elevated pressures. / Do not pressure test with compressed air.
7 / Use in areas with sufficient ventilation.
Recover should not be used near open containers of gasoline or any other flammable liquid.
Do not allow refrigerants to come in contact with open flame. Refrigerant decomposition in flame in results in phosgene gas. / Avoid dangerous environments.
Flammable, combustibility.
Breathing phosgene gas can be fatal. / Use in areas with sufficient ventilation. Check surrounding areas for combustibles.
8 / Use caution when connecting or disconnecting the hoses. / Frostbite / Personal protective equipment should be worn to protect operator from frostbite.
9 / Always disconnect recovery machine from power before servicing. / Electrical Shock / Disconnect power before servicing system.
10 / Use the Recover XL/XLT with the proper operating conditions before further use. / Damage unit. / Make sure the teacher has checked to verify it is the right cylinder.
11 / The Low pressure switch will shut off the unit shut the unit off and the lamp will indicate Recovery Completewhen the unit shuts reaches appropriate vacuum levels. After the unit shuts down, turn the system switch to off, then rotate the selector valve clockwise to OFF to equalize then PURGE. Turn the system switch on. / NOTE: The low side gauge should read an increase in suction pressure, indicating the refrigerant that was trapped in the machine. Wait until the Low Pressure Switch again shuts the unit off at the appropriate vacuum.
12 / Close the valve to the recovery tank and shut the Recovery XLT off.
For Recover XL Models
13 / Monitor the recovery of the system until the suction gauge indicates the appropriate level of vacuum. Turn off and rotate selector valve to OFF to equalize then to PURGE. After the unit shuts down, turn the system switch to off, then rotate the selector valve clockwise to OFF to equalize then to PURGE. Turn the system switch on.
14 / Turn the system switch on. / NOTE: The low side gauge should read an increase in suction pressure, indicating the refrigerant that was trapped in the machine. Wait until the suction gauge indicated the appropriate vacuum.
15 / Turn the selector system switch off.
16 / Close the valve to the recovery tank and shut the Recovery XL off.

AUTHORIZED EMPLOYEE INFORMATION:

ID NUMBER: / LAST NAME: / FIRST NAME: / REMARKS:

JOB HISTORY INFORMATION:

DATE: / REMARKS:

Approval Signature:Date:

Page 1 of 7 Print Date: Jun/27/2005