Section 2: INSTALLATION
2.10 Introduction
This manual has been compiled not only for the care and maintenance of the Welch Dry Vacuum System
now in your possession, but as a helpful reference and guide to prevent many problems which can occur
if used improperly.
2.11 Unpacking
Carefully remove the Dry Vacuum System from the shipping carton. Preserve all paperwork for future
reference. If damage has occurred from shipment a claim must be filed with the carrier immediately;
preserve the shipping carton for inspection by the carrier. If you are required to communicate with
your dealer or Gardner Denver Welch Vacuum Technology be sure to include your order numbers for
quick identification. Do not return the system to the factory without first calling for a returned goods number.
Contact your closest Gardner Denver Welch Vacuum Technology sales office. See directory on back cover.
2.12 System Mounting
Rubber feet are attached to the pump. Rubber feet are excellent for applications involving a
semi-flexible surface such as a bench top; they help to isolate noise and eliminate creeping.
The Self-Cleaning Dry Vacuum System must be positioned with the feet on a flat surface.
2.13 System Location
The Self-Cleaning Dry Vacuum System should be located preferably in a clean, dry and well ventilated
area. Please be sure not to block the ventilation ports located on the metal shell. The pump should be
placed where the surrounding temperature remains between 10°C and 40°C (50°F and 104°F). Always
check to insure the location chosen is protected from direct or indirect moisture contact. The pump
should be located as closely to its system in order to utilize it most efficiently.
WARNING
Don’t operate this pump in an atmosphere
containing flammable or explosive gases or vapors.
WARNING
The motor is thermally protected and will automatically
restart unexpectedly when the overload device resets.
2.14 Inlet and Outlet Provisions
An inlet hose barb which accepts ¼” (7mm) I.D. hose makes it easy to connect the system to your
concentrator, rotary evaporator or gel dryer. Since the vacuum system operates in the viscous flow
range, the small diameter of the hose will generate minimal conductance loss. For best results, Welch
recommends the length of the tubing between the pump and the apparatus be kept as short as possible.
Hose clamps should be used to hold the hose in place.
The hose barb in the outlet port of the pump accepts ¼” (7mm) I.D. hose. A vent line can be attached
to the outlet hose barb which allows gases and vapors pumped through the pump to be piped to a fume
hood. If you any questions, be sure to call technical service prior to start-up. Contact your closest
Gardner Denver Welch Vacuum Technology sales office. See directory on back cover.
WARNING
Never Block The Outer Port. If the outlet is blocked, pressure will
buildup in the pump which can lead to the pump head bursting
creating the potential of serious injury. Remove plug from outer port.
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