Welch Vacuum 2047 Dryfast & Dryfast Ultra - Manual (Page 7)

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2.15 Discharge Provisions
Dryfast Vacuum Pump Models 2014, 2032, 2034, 2037, 2042 2044 and 2047 come with two
hose barbs, one Intake and one Exhaust. All hose barbs and muffl ers are supplied loose with
the pump. The hose barb used on all models accepts 3/8” I.D. hose. By threading the hose
barb in the exhaust port of the pump, a vent line can be attached which allows gases and
vapors pumped through the pump to be piped from the work area into a hood. Vent lines will
muffl e noise coming from the vacuum pump.
WARNING
Never block the discharge port. If the exhaust is blocked, pressure will
build-up in the pump which can lead to the pump head bursting creating
the potential of serious injury. Remove plug from exhaust port.
WARNING
Remove plug from exhaust port before operating
Properly identify the intake and exhaust of the pump
Intake Exhaust