American Dryer Corp. ML-410 - Manual (Page 49)

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6. Steam Damper Air Piston (Flow Control) Operation Adjustment
Steam damper operation was tested and adjusted prior to shipping at 80 PSI (5.512 bars). If steam damper
adjustment is necessary, locate the flow control valve and make the necessary adjustments as noted below.
NOTE: Adjust both flow control valves equally, so that both pistons operate at the same time.
H. WATER SUPPLY CONNECTION FOR OPTIONAL SPRINKLER SYSTEM
If the dryer is equipped with the SPRINKLER SYSTEM OPTION, a water supply of approximately 40 PSI
(2.75 bars) must be connected into the 1” N.P.T. sprinkler shut-off valve located on the left side of the dryer
base.