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7.6 START-UP
• Turn on dryer disconnect switch (supplied by customer) to apply power to the
dryer.
• With a voltmeter, check the power connections for the correct voltage shown on
the dryer serial nameplate.
• Close and secure all electrical panel covers.
• Slowly pressurize the dryer. When the dryer reaches full operating pressure,
check the system for air leaks. Soap-test all joints and fittings. To maintain desired
dew point, any leaks detected must be fixed, especially those on the outlet side of
the dryer.
• On units with Adjustable Purge, make sure that the purge adjustment valve is
open and air outlet shut off valve (if equipped) is closed.
• For dryers equipped with a Dew Point Monitor, remove the dew point monitor
sensor from the electrical enclosure and install in the sensing block that’s located
beside the enclosure and attach and secure the sensor cable to the sensor.
• On dryers equipped with the Moisture Load Control (Purge Saver) option, verify
that the Purge Saver switch is in the off position to allow standard cycling at
start-up.
• For the first 30 seconds that the dryer is energized, both purge valves will remain
closed. After 30 seconds, the left tower purge valve will be opened and depressur-
ization of the left tower will occur.
• When the dryer is energized, the Power On light and Right Tower Drying light will
be illuminated. When electrical circuit has been energized, the Solid State Timer
will start automatically. See Section 6 for logic operating sequence.
• Following depressurization, adjust purge valve as described in Section 6.4 for
dryers equipped with Adjustable Purge.
At initial start-up, check the dryer operation for one or two cycles, especially at
the time of the tower shift. Verify that all systems are operating in their proper
order and sequence. If the dryer is not functioning properly, contact distributor
or ZEKS Technical Service.
NOTICE