NOTE: BECAUSE OF LACK OF USE, VALVES MAY STICK. LUBRICATE WHERE NECESSARY. WHEN VALVES AT
CONCENTRATE POINTS LEAK OR DO NOT FULLY CLOSE, CONCENTRATE MAY ESCAPE, AND (ESPECIALLY IF
A CHECK VALVE IS NOT INSTALLED) LET WATER ENTER THE FOAM TANK. REFER TO THE SECTION ON FOAM
MIGRATION.
10. Refer to “Shell Water Refill Procedure.”
11. Verify all valves are in the proper position with pins locked into place (refer to the schematic for “Normal
Valve Position”). Spray locking pins with a lubricant such as WD-40®.
12. Notify the proper personnel that the system is back in service.
13. Record the date of the inspection and any service provided.
NOTE: BECAUSE OF THE THICK VISCOSITY OF AR FOAM, THE SIGHT GLASS MAY NOT ACCURATELY MEASURE
THE LEVEL. TO DETERMINE THE AMOUNT OF CONCENTRATE INSIDE THE UNIT, CONTINUE TO FOLLOW THE
PROCEDURE ON “CONCENTRATE LEVEL CHECK”, BUT MEASURE THE AMOUNT OF WATER DRAINED FROM
THE SHELL.
EXAMPLE: THE DESIGNED CAPACITY OF AN 1800 HORIZONTAL UNIT IS 1800 GALLONS, THE ACTUAL
CAPACITY IS 1980 GALLONS. IF 180 GALLONS OF WATER IS DRAINED FROM THE SHELL, 1800 GALLONS OF
CONCENTRATE REMAIN. CONSULT VIKING FOR ACTUAL CAPACITIES OF AR UNITS.
NOTE: DISPOSE OF ALL FOAM SOLUTION DISCHARGED DURING TESTING OR MAINTENANCE IN ACCORDANCE
WITH LOCAL CODES AND REGULATIONS. CONTACT VIKING, OR THE CONCENTRATE MANUFACTURER, FOR
PRODUCT DATA OR DISPOSAL RECOMMENDATIONS.
17
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