Welch 2560, Owner'S Manual

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
Welch Vacuum 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. Call (847) 676-8800 Ext. 1

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.

2.13

System Location and Enviromental Condition

The 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 surround-
ing 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. The pump is rated for indoor use only. Maximum altitude 2000
meters. Operating temperature range 5°C to 40°C. Maximum relative humidity of 80% for temp. up to 31°C
decreasing to 50% at 40°C. Rated for ±10% of supply voltage. Pollution Degree2, Installation Category II.

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

A inlet hose barb which accepts ¼” 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 regime, 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” ID 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.  Be sure to
call Welch technical service prior to start-up at (847) 676-8800 if you have any questions.

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.

5