Donaldson Torit Downflo II DFT 2-4, Инструкция по установке и эксплуатации

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Donaldson Company, Inc.
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Power to the solid-state timer is supplied to
Terminals L1 and L2, which operate in parallel
with the blower starter
’ s low-voltage coil. On
blower start-up, power is supplied to the timer and
the preset OFF time is initiated. At the end of the
OFF time, the timer energizes the corresponding
solenoid valve to provide the ON time cleaning
pulse for one diaphragm valve and then steps to the
next until all filters have been cleaned.
To pulse when the blower is OFF, install a toggle
switch as shown on the Solid-State Timer Wiring
Diagram. When the toggle switch is ON, the timer
receives power and energizes the solenoid valve
pulse-cleaning operation even though the blower is
turned OFF.
Input
105-135V/50-60Hz/1Ph
Output Solenoids
The load is carried and turned ON and OFF by the
200 watt maximum-load-per-output solid-state
switch.
Pulse ON Time
Factory set at 100-milliseconds, or 1/10-second.
Note: Do not adjust pulse ON time unless the
proper test equipment is available. Too much
or too little ON time can cause shortened
filter life.
Pulse OFF Time
Factory set at 10-seconds, adjustable from 1 to 1.5-
second minimum to maximum 60 to 66-second.
Operating Temperature Range
-20° F to 130° F
Transient Voltage Protection
50 kW transient volts for 20-millisecond duration
once every 20 seconds, 1% duty cycle.
Solenoid Valves
115-V at 19.7 watts each
Compressed-Air
Set compressed-air supply at 90-psig. The timer is
factory set to clean one filter or set of filters every
10-seconds.
Note: Do not set compressed-air pressure above
100-psig. Component damage will occur.