7713397 R2
97
Dryer Fuel System Gas Leak Check
Important
The dryer fuel train shall be inspected for leaks to verify the gas tightness of the dryer components and
piping under normal operating conditions. After installation and annually thereafter use a solution of
soap and water to check fittings and pipe for leaks.
The dryer and its individual shutoff valve must be disconnected from the gas supply piping system
during any pressure testing of that system at test pressures in excess of ½ psi (3.5 kPa). The dryer must
be isolated from the gas supply piping system by closing its individual manual shutoff valve during any
pressure testing of the gas supply piping system at test pressures to or less than ½ psi (3.5 kPa).
The gas tightness of the solenoids can be checked by adding test gauges to the test ports of the main
solenoid valves. While the dryer is running turn off the manual shutoff valve before each burner and
turn off the fuel supply manual shutoff at the inlet fuel supply to the dryer. Monitor the pressure of
upstream and downstream pressure gauge. If the pressure of any of the gauges drops to zero there
could be a leak in the system. Use a solution of soap and water to find the source of the leak.
4.7.12 External Transport(s)
Overview
The following diagrams show typical transport setups, which are detailed with sample input data in the
Commander Control Owner's and Operator's Manual
.
For specific wiring information related to external transports and NEMA starters, see the
NECO provides the ability to control two transport devices to FILL the dryer and two transport devices to EMPTY
the dryer within the Commander control system. All motor starters, starter coils, and overload contacts required
are customer-supplied.
These external transport systems can control incoming (wet) grain and outgoing (dry) grain so that the overall
system works in conjunction with the dryer. (See
Commander Control Owner's and Operator's Manual
for
specifics to enter Fill/Empty setup data.
CONTINUOUS-FLOW GRAIN DRYER – COMMANDER CONTROL