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TASK Primary Contact Secondary Contact PERIOD (days) NEXT MAINTENANCE LAST MAINTENANCE
Leak Detector #1 keithb@jlab.org bunton@jlab.org 365 11/29/24 11/30/23

Helium Leak Detector Model- HLT 560 Serial- 40108912 Backing/Roughing Pump Model- DUO 10M Serial- 21510397 change oil ,replace filter,replace diaphragms ,clean valve block and seals , clean pirani measuring element,replace sinter filter x3 filter #b 8199 999 et diaphragms :MVP 035 sinter filters 3m bg 449 207-t Wipe down exterior of cart, backing pump, and Leak Detector. RECORD DATE AND HOURS Oil Changed Leak Detector: 12-01-2020 Oil Changed Backing Pump: 12-01-2020 hours: ______ 12-01-2020 **MAINT LOG** 12-01-2020 In November we used the leak detector on the Tagger Window. Detector went into fail mode, signaling that valve P1 was not in the right range Valves P1 and P2 are Pirani Gauges inside the detector. Valves were removed, cleaned, re installed, and the cart tested. No more faults were detected, however we did not put the cart under significant load. Upon inspection of other components the Mist Filter is severely saturated, and the tubing is looking cooked with slight oil residue. Replaced