Welch Vacuum 2028 Self-Cleaning Dry Vacuum System - Manual (Page 5)

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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 fi led with the carrier immediately;
preserve the shipping carton for inspection by the carrier. If you are required to communicate with your
dealer or Welch-Ilmvac be sure to include your order numbers for quick identifi cation. Do not return the
system to the factory without fi rst calling for a returned goods number. Contact your closest Welch-Ilmvac
sales offi ce.
2.12 System Mounting
Rubber feet are attached to the pump. Rubber feet are excellent for applications involving a semi-fl exible
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 fl at 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 effi ciently.
WARNING
Don’t operate this pump in an atmosphere containing fl ammable or explosive
gases or vapors.
CAUTION
If operating the unit in a hood, be aware of other hood uses and users – always
avoid activities that could compromise unit function. For example, an acid
digestion in the hood with the pump system will destroy unit electronics.
WARNING
Do not position the equipment so that it is diffi cult to operate the disconnecting
device. (Removal of the plug or power cord from the socket outlet).
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 fl ow
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
offi ce.
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.