How is the gas flow fault on a Whitley Workstation initiated?
The Whitley range of anaerobic workstations operate at a slight positive pressure thereby ensuring the integrity of the selected atmosphere inside the chamber. If there were to be a leak in the chamber then there would be a pressure drop which in turn would result in a call for gas. If there is a continuous flow of gas for five minutes then a Flow Fault error will be initiated. Under these conditions the green gas demand LED on the front control panel will be lit. Under normal conditions this LED should illuminate briefly every few minutes. ACTION If the flow fault is showing the following checks should be made: 1. Check that both inner porthole doors are securely closed. 2. Check that the oil in the oil bottle is at the correct level. If the above checks are OK it may be that there are a number of small leaks around the end plate screws, which amounts to a large leak. If this is the case these can be tightened using a 10 mm spanner. TAKE CARE NOT TO OVER TIGHTEN THESE PLASTIC NUTS. If
