Welch Vacuum 2028 Self-Cleaning Dry Vacuum System - Manual (Page 6)

PROPERLY IDENTIFY THE INLET AND OUTLET OF THE PUMP
Outlet Port
Inlet Port
WARNING:
(Model
2028 shown) Remove Plug From Exhaust
Port Before Operating.
2.20 Electrical Power
2.21 Power Source Review
Review the power source and the voltage rating on the units serial number tag to be sure they agree in
voltage, phase and frequency. Serious damage may occur to the system if it is connected to an improper
voltage. All Welch systems must be grounded. Grounding reduces the risk of electric shock in the event
of an electrical short circuit. The plug must be plugged into an outlet properly grounded. Consult your
local electrical codes if you have doubts.
2.22 Identifi cation Symbols OFF (Power) on Models: on Model:
ON (Power) 2025, 2026 & 2027 2028
2.23 Grounding Instructions
This product should be grounded. In the event of an electrical short circuit, grounding reduces the risk of
electric shock by providing an escape wire for the electric current. This product is equipped with a cord
having a grounding wire with a grounding plug. The plug must be plugged into an outlet that is properly
installed and grounded in accordance with all local codes and ordinances.
WARNING
Improper installation of the grounding plug
can result in a risk of electrical shock.
If repair or replacement of the cord or plug is necessary, do not connect the grounding wire to either
fl at blade terminal. The wire with insulation having an outer surface that is green with or without yellow
stripes is the grounding wire.
Check with a qualifi ed electrician or serviceman if the grounding instructions are not completely
understood, or if in doubt as to whether the product is properly grounded. Do not modify the plug
provided; if it will not fi t the outlet, have the proper outlet installed by a qualifi ed electrician.
Model’s 202501, 202601, 202701 and 202801 are for use on a nominal 120V circuit, and has a grounding
plug that looks like the plug illustrated in Sketch A in Figure #1. A temporary adapter, which looks like
the adapter illustrated in sketches B and C, may be used to connect this plug to a 2-pole receptacle as
shown in sketch B if a properly grounded outlet is not available.
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