8.0 INSTALLATION AND START-UP
ZEKS Eclipse
TM
90-5,000ZPB Desiccant Dryers
www.zeks.com
19
!
NOTICE
Dryer must be grounded with the full size ground wire
connected to an earth ground.
!
NOTICE
Dryer must be fused according to NEC with the size fuse listed
on the dryer serial nameplate, or on specifi cation sheet in
Technical Manual.
Method of Operation (See Figure 2)
• When fi lter pressure is below
22 psig, the Piston (9) is held in
an open position by the Spring (3).
• When fi lter is pressurized above
22 psig, the Piston closes the
drain Aperture at the O-Ring (13).
• As the condensate collects in
the Filter Bowl, the Float (1) is
pushed upward, opening the
Nozzle (7) and allowing air to
reach the top of the Piston (9).
This causes the Piston to move
downward, opening the Aperture
at the O-Ring (13) for drainage
of the condensate.
Maintenance and Initial Operation
• Following initial dryer startup, inspect drain(s) for system
debris. Clean as required. Float drain assembly is screwed
into bottom of Bowl from the inside.
• Drains require periodic inspection and maintenance to ensure
proper operation. Clogging of drains due to system debris
or fouling is not considered warranty. Faulty drains must be
returned to the factory for analysis in order to receive warranty
credit.
Clogged drain screens can be cleaned by immersing drain in a
detergent.
8.5 ELECTRICAL CONNECTION
Make all electrical connections to the dryer as shown on the wiring
diagram. Care must be taken to connect the proper voltages.
Size fi eld connection knock-out for the conduit fi tting required by
the NEC. For NEMA 4 enclosure, installer must use UL Type 4
rated fi tting.
On dryers equipped with the PurgeSync™ option, the wiring for
this function should be verifi ed if the option is to be activated at
dryer startup.
8.6 DESICCANT LEVEL VERIFICATION
Remove desiccant fi ll port at the top of each vessel (tower)
and check desiccant level. The level should be consistent with
the level depicted in the Desiccant Fill Chart in SECTION 9,
MAINTENANCE AND SYSTEM CHECK of this Technical Manual.
Replace port following verifi cation of desiccant level.
8.7 DEW POINT MONITOR (Available with the NEMA 4 option)
The Dew Point Transmitter that is supplied with the dryer as a
separate component (See Dew Point Transmitter in protective
packaging) must not be installed until the dryer has been in
operation for 24 hours. Color of the Blue Moisture Indicator (BMI)
must appear blue before the Transmitter is installed.
The dryer Warranty will be voided if the Dew Point Sensor is
damaged as a result of the dryer becoming fl ooded with moisture.
8.8 START-UP PROCEDURE
A Startup Form (included with the ZPB dryer at time of shipment
from the factory) must be completed and submitted with the
Warranty Card as part of the commissioning process.
Prior to pressurizing the compressed air system, conduct a
visual inspection of the ZPB dryer to verify that the unit was not
damaged during the installation process. This includes:
• Inlet and outlet compressed air piping connections are properly
supported.
• Pressure vessels are not damaged.
• Gauges are in good condition.
• Pneumatic control air hoses and inlet and outlet compressed
air piping connections are properly supported and tightened.
• Prefi lter bowl and after-fi lter bowl are properly tightened.
• Drain lines to the fi lters are installed. Refer to SECTION 8.4.1.
• Fasteners that connect the Diff erential Pressure Indicator to
each fi lter head are secured on all fi lters.
• The drain stem on each fi lter bowl is rotated in the proper
direction so that the drain operates in Manual Mode at the time
of initial startup. Refer to SECTION 8.4.1. NOTE: The drains
will leak air until the system reaches 22 psig.
• Observe color of the Blue Moisture Indicator (BMI).
After the visual inspection is complete, slowly pressurize the
dryer and perform a verifi cation check of the following items:
1. Verify that the outlet shutoff valve is closed (if provided for the
dryer). This can be provided as part of a three-valve bypass
option from the factory, or it can be provided as part of the fi eld
installation.
!
WARNING
Proper safety precautions must be followed when servicing
fi lters and drains. Filter bowl must be de-pressurized before
servicing drain.
Service should only be performed by qualifi ed personnel.
Before fi rst-time use, and after maintenance, the drain stem
(See 18 in Figure 2) should be twisted fully clockwise to
provide AUTOMATIC operation (See Figure 1).
Figure 2
!
NOTICE
The Dew Point Transmitter that is supplied with the dryer as a
separate component must not be installed until the dryer has
been in operation for a continuous 24 hour period. Color of
the beaded media in the Blue Moisture Indicator (BMI) must
appear blue before the Transmitter is installed.
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