2020 Tech Report Jan-Feb

Task # 2.b.: Cleaning a Strainer in a Configuration “B” Control Group: Gauge Valves

ACTION

COMMENT

19.

Lightly oil and place the gasket on the bottom cap. Carefully align the screen assembly in the center body and replace the bottom cover. Tighten cover / bolts in the accept- able prescribed manner.

20.

Per ANSI/IIAR-2, valve gasket materials shall match valve manufacturer’s specifications, and shall be of the thickness specified.

21. 22. 23.

Slowly close Valve “C.”

Reinstall the gauge or plug in Valve “C.” Slowly open Valve “C” if it has a gauge.

CAUTION: If Valve “C” contains a plug do NOT open this valve. NOTE: Water containing ammonia drained from an Ammonia Refrigeration System may be considered hazardous. If you have any questions, consult your supervisor or facility contact on how to properly dispose of the wa- ter. NOTE: Log entries must contain the name of the person making the entry, as well as the time, date, and pertinent details. Be specific! If there is not an established Master Mainte- nance Log (or facility equivalent), log the infor- mation on your work order. See Task # 1 of this Maintenance Procedure.

24.

Dispose of the water in the bucket.

25.

Log “Isolation, Pumpout, and Strainer Cleaning of Control Valve _____” ( in- sert the appropriate valve number ) in the Master Maintenance Log (or facility equivalent). Repeat this Maintenance Procedure for each strainer to be cleaned, starting with Task # 1 “Preparing for Refrigeration Sys- tem Strainer Cleaning.” If this is the last strainer to be cleaned, cleanup the work area, and secure all equipment. When service / maintenance is complete, return the strainer control group to nor- mal operation by performing Task # 3.b. “Returning a Configuration “B” Control Group to Normal Operation.”

26.

27.

See Task # 3.b. of this Maintenance Proce- dure.

RETA TECHNICAL REPORT PAGE 13