Steam Requirements
NOTE: Machines require a constant 80 to 100 psig (5.62 to 7.03 kg/sq cm) steam service for optimum operation. The maximum allowable steam pressure for use with 60 Hertz or 50 Hertz tumblers is
125 psig (8.6 bar). In no case may the pressure exceed the above value.Obtain specific steam service pipe sizes from steam system supplier or a qualified steam fitter.
●Refer to Figure 23 for proper steam pipe configurations.
●To prevent condensate draining from headers to tumbler, piping should have a minimum 12 inch (305 mm) rise above respective header. Do not make steam connection to header with a horizontal or downward facing tee or elbow.
●Whenever possible, horizontal runs of steam lines must drain, by gravity, to respective steam header. Water pockets, or an improperly drained steam header will provide wet steam, causing improper operation of tumbler. If pockets or improper drainage cannot be eliminated, install a bypass trap to drain condensate from the low point in the steam header to the return.
●In both steam supply and steam return line, it is recommended that each have a pipe union and
●Connect the steam solenoid valve to the related steam coil inlet connection with nipples, flex hoses, unions and tees.
●Strainers may require cleaning due to materials from hoses or pipes.
●Install vacuum breaker (optional), bucket trap with
18 inches (457 mm) below coil and as near to the tumbler as possible. Inspect trap carefully for inlet and outlet markings and install according to trap manufacturer's instructions. If steam is gravity returned to boiler, omit trap but install vacuum breaker and check valve in return line near tumbler. Gravity return requires entire return plumbing be below steam coil outlets.
●Install union and
NOTE: To prevent water hammering, route return lines below outlets of steam coils.
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