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HB Series Desiccant Dryer Models 150-8000
ingersollrandproducts.com
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CAUTION
Dryer should not be shut down during the heating cycle. Doing so may
cause the Heater High Temperature alarm to activate, which will
require the user to manually reset the Heater High Temperature safety
in the control enclosure. If the dryer must be shut down during the
heating cycle, advance the program via the Program Jog function (see
Section 9.10) to the end of the heating cycle prior to initiating the
Shutdown Sequence.
For all Blower Purge Dryers that will be routinely shut down and
restarted, Ingersoll Rand recommends that an isolation valve be
installed at the dryer outlet. Upon restarting the dryer, it is likely that the
pressure downstream of the dryer will have decayed. When starting the
dryer without the valve (or with the valve in the fully open position), the
high velocities of the air through the towers could damage the desiccant,
as well as provide unprocessed air down stream.
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NOTICE
Prior to removing power or compressed air from the dryer, depress the
OFF button on the Microprocessor Control. This initiates the
Shutdown Sequence, which closes the purge valves, repressurizes the
off-line tower and opens the flow valves.
DO NOT REMOVE POWER
OR COMPRESSED AIR FROM THE DRYER DURING THE
SHUTDOWN SEQUENCE.
Shut Down Procedure:
• Maintain a compressed air source to the dryer and a
supply of power to the Microprocessor Controller.
10.0 INSTALLATION AND INITIAL START-UP
• De-energize the dryer
• Shut down air compressor or bypass dryer
• Close Isolation Valves (if equipped)
Note: On the subsequent Start-up, the outlet isolation valve should be
in the closed position. Slowly open the valve to build pressure
downstream.
• Verify all actuated valves are in their failsafe position.
• Using a voltmeter, check the power connections for the correct voltage
shown on the dryer serial nameplate
• Verify blower rotation is per arrow.
• Close and secure all electrical panel covers.
• Ensure that the purge adjustment valve is in the open position.
Once power is applied to the dryer and after a brief initialization
sequence, the PRESS ON prompt will be displayed.
PRESS ON
Depress the ON button to initiate the dryer program. The
Microprocessor Controller will display the first CUSTOMER
MODE screen
LT DRY RT REGEN
ON
• The sequence will initiate proper Inlet and Purge Valve positioning and
tower depressurization.
• If the dryer has been in storage or off for an extended period of time,
the Blue Moisture Indicator may be gray, the High Dew Point Alarm (if
equipped) may be activated and the Dew Point Display (if equipped)
may indicate a high dew point. Depending upon the duration of idle
time, it may take anywhere from one to twelve hours for the alarm to
deactivate, the BMI to return to its normal blue state and dew point to
drop.
• For dryers equipped with EMS, refer to Section 9.5 regarding the use
of this option.
10.8 SHUT DOWN PROCEDURES
The following procedures must be followed to properly shut down the
dryer to avoid damage to the unit and preserve dryer performance. The
dryer requires compressed air to actuate the valves. Removing the
compressed air supply prior to shutting down the dryer will result in
improper valve positioning. In addition, the dryer must complete a
specific Shutdown Sequence prior to being turned off. Should power be
removed from the dryer or air pressure removed from the dryer prior to
the completion of the Shutdown Sequence, damage to the dryer may
occur. Lastly, the inlet valves are configured to open on a loss of power
and the purge valves configured to close (fail safe). Should a valve
open to a depressurized tower, as would be the case if the dryer were
stopped in mid-cycle, a rapid pressurization will occur.
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NOTICE
The force of repeated rapid pressurizations will damage the dryer.
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NOTICE
On dryers equipped with EMS, merely leaving the unit in EMS without
a compressed air supply is not advised, as it is likely that the system
pressure will decay over time. Should this occur, the unit will go into a
FTS alarm as well as risk misalignment of valves should switchover
occur prior to reinstating the air compressor.
Depress the OFF button to initiate the SHUTDOWN SEQUENCE.
SHUTDOWN
SEQUENCE
OFF
• Permit the dryer to complete the full SHUTDOWN
SEQUENCE (30 seconds)
Once the PRESS ON Prompt is displayed, the dryer has
completed the SHUTDOWN SEQUENCE. Power and air may be
safely removed from the dryer.
PRESS ON
120.26 Dryer - Operation, Installation, Maintenance Manual, and Parts
