Boiler house Feedtank ancillaries
2
Installation WARNING Your attention is drawn to Safety information leaflet IM-GCM-10. Tanks or vessels must be drained, vented to atmosphere, and inlets isolated before work is commenced. In particular, make sure that any connections which could carry hot fluids, for example condensate return or flash steam from blowdown, are isolated. Top, intermediate, and bottom arms have a ½ " BSP taper male thread (R ½ ) for connection to the tank. - The tank should have ½"BSP Pl (Rp ½) screwed sockets to take the top and bottom arms, and intermediate arm if fitted. Notes:-For certain lengths, the intermediate arm is not equidistant between the top and bottoms arms. The socket for the intermediate arm does not need to pierce the tank. - Fit arms to tank using PTFE tape or a suitable jointing compound. - Align arms vertically. - Slacken all gland nuts and remove the 3/8 " BSP top arm plug and gasket. - Trim plastic tube to the required length (686, 786, 986, or 1086 mm). Each end of the tube requires an internal brass support, (supplied with the tube). - Sligthly flatten the ends of the tube with thumb and forefinger before fitting the supports, to stop them moving during positioning. - Pass glass/plastic tube through 3/8 " BSP thread in top arm and lower into position. When an intermediate arm is fitted, the ends of the two glasses/tubes should touch and the joint should sit between the intermediate arm glands. - Gently tighten gland nuts and refit top arm plug and gasket. - Fit the 'C' section protector (if used) to the front of the unit, then rotate it so that its hooked edges line up with the protection rod drillings. - Fit the protector rod(s) through the drillings in the top and intermediate arms and locate in the blind drillings in the bottom arm. - Use the cutouts in the side of the protector to ensure the rods are correctly positioned. - The drain connection must not be plugged. It can either be left open to a tundish, or may be piped to drain.
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Operation The plug cock has three positions:- Up
Purge water connection.
Horizontal
Normal operation.
Down
Drain glass. This position also isolates the water connection in case of a broken glass.
Drain glass
Purge water
Normal
An indication of the plug position is marked on the lever. We recommend that the water connection is purged and the glass drained periodically. It is important to check that water flows to drain and that the level is rapidly re-established in the glass. A slowly rising level could indicate a partial blockage.
Maintenance No specific maintenance is required. We recommend that the arms are checked for leakage periodically and the packing sleeves and washers renewed if necessary. Always fit new packing sleeves and washers if the tube has to be replaced.
TI-P409-04 EMM Issue 4
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WG2 Water Level Gauge
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