Connection: 3/4" Female Pipe Thread conforming to BS21 and ISO7-1. Desiccant type: Envirogel self indicating beaded silica gel. > The following data should be used for the basic selection of a transformer breather. In order to assess the size of the breather the air volume above the oil in the conservator tank is the most important factor. The quantity of oil and the transformer rating is of secondary importance. The daily breathing rate is based on the assumption that there are two temperature drops of 8 C per 24 hours. The breathing volume change which occurs during the pump start-up is not taken into consideration. > The breather is supplied with a threaded sealing plug screwed into the top moulding to prevent any water vapour ingress whilst in store. This plug should be removed immediately prior to the unit being fitted to the air vent pipe of the transformer reservoir tank. Fit the breather and tighten using the spanner flats provided at the top of the unit. Maximum torque on threads is 9Nm/80lbfin.NOTE: DO NOT ATTEMPT TO SCREW OR UNSCREW THE BREATHER BY HOLDING THE BODY WITH YOUR HANDS, USE A SPANNER ON THE FLATS PROVIDED. Full installation and maintenance instructions are supplied with each Transformer Breather. >

PRODUCTINFORMATION 'R' SERIES TRANSFORMER BREATHERS Operation > Periodic inspection should be carried out to monitor the condition of the desiccant charge. The breathers are filled with beaded Envirogel desiccant. This material changes colour from orange to green as it becomes saturated with water vapour. When the colour change reaches the indicator line on the desiccant container it should be recharged with fresh desiccant or the complete assembly should be replaced. Maintenance > If the breather is not routinely replaced when the desiccant becomes saturated, the only maintenance necessary is...