2020 Tech Report Jan-Feb

1. Preparing for Refrigeration System Strainer Cleaning ACTION COMMENT 14. Continue to the proper isolation and pumpout task based on the valve con- figuration of the equipment to be worked on.

See Task # 2.a., 2.b., or 2.c. of this Mainte- nance Procedure.

Task # 2.a.: Cleaning a Strainer in a Configuration “A” Control Group: Drain Valves

ACTION

COMMENT

NOTE: If the possibility exists that the condi- tions may have been altered after prepara- tion of the plan, you must repeat Task # 1 “Preparing for Refrigeration System Strainer Cleaning.” NOTE: Refrigeration Operators / Technicians must follow the facility’s Lockout / Tagout Pro- gram. If you have any questions while perform- ing this procedure, refer to the equipment’s corresponding SOP, consult your supervisor or facility contact, or review the facility’s Am- monia Refrigeration Compliance Program. If the control valve configuration is as shown on Figure #3 and Valve “E” is closed, the rea- son for the closure must be investigated and the valve opened before proceeding. The Master Maintenance Log (or facility equiva- lent) should contain information regarding the proper setting for this valve. If you have any questions, consult your supervisor or facility contact. If for any reason it is necessary to adjust this valve, the number of turns required to close the valve must be recorded in the Master Main- tenance Log (or facility equivalent.) If there is not an established Master Maintenance Log (or facility equivalent), log the information on your work order.

1.

Confirm that Task # 1 “Preparing for Re- frigeration System Strainer Cleaning” has been completed. If not completed, do so now before continuing with this Mainte- nance Procedure. Verify the isolation of other forms of en- ergy to the valves being worked on.

2.

3.

If the control valve configuration is as shown on Figure #3, ensure Valve “E” is not closed.

RETA TECHNICAL REPORT PAGE 7