Dri-Air Industries HP4-X 400 - 750, HP4-X 400 Series, HP4-X 750 Series, HP4-X 500 Series Operating Manual
DRI-AIR INDUSTRIES, INC.
HP4-X 400 - 750
FLOOR MOUNT DRYER
OPERATING MANUAL
OPERA TING MANUAL - HP4-X 400-750 FM DR YERS
Revision 10/8/02
Page 1
DRI-AIR INDUSTRIES, INC.
Page 2
DRI-AIR INDUSTRIES, INC.
16 THOMPSON ROAD
P.O. BOX 1020
EAST WINDSOR, CT 06088-1020
Tel. (860) 627-5110
FAX (860) 623-4477
Internet http://www.dri-air.com
e-mail: sales@dri-air.com
OPERA TING MANUAL - HP4-X 400-750 FM DRYERS
Revision 10/8/02
DRI-AIR INDUSTRIES, INC.
CONTENTS
DRYER OPERA TION/FEATURES---------------------------4
AIR FLOW SCHEMATIC FOR HP4-X DRYER -----------6
DRYER CYCLE DIAGRAM------------------------------------ 7
INST ALLATION PROCEDURE ------------------------------- 8
Electrical Connection ---------------------------------------8
Check for correct motor rotation -------------------------8
Compressed Air Connection------------------------------8
START-UP PROCEDURE -------------------------------------9
Set Temperature: -------------------------------------------- 9
DRYER OPERATION-TROUBLE SHOOTING --------- 10
DRYER OPERA TION-DETAILED DIAGNOSIS -------- 11
DRI-AIR ZONE V ALVE --------------------------------------- 12
PARTS LIST----------------------------------------------------- 13
OPERA TING MANUAL - HP4-X 400-750 FM DR YERS
Revision 10/8/02
Page 3
DRI-AIR INDUSTRIES, INC.
DRYER OPERATION/
FEATURES
The HP4-X 400/500/750 dryer series is a four bed dryer
design that is ideal for use on large molding press or extrusion
applications. This large capacity dryer combines our patented
desiccant tower design and state of the art microprocessor
controls to provide a constant supply of dry air to the material
hopper. Material drying is controlled by utilizing one zone for
removing moisture from the process air, while regenerating
the other by heating the desiccant to a high temperature.
Once the regenerated beds cool down, the Zone V alve
switches the airflow, and the newly regenerated beds are used
to desiccate the process air stream. The saturated beds are
now regenerated in the same manner, completing the
regeneration cycle. The cycle is depicted Page 7.
The airflow design of the HP4-X dryers makes the
regeneration cycle more efficient because we utilize a small
amount of the desiccated process air rather than ambient air
to regenerate the desiccant bed. This reduces the impact of
the high moisture content of the ambient air, which would
contaminate the desiccant bed, and allows the dryer to attain
a lower dew point. Please see the Air Flow Schematic on
Page 6.
HP4-X Design
Our patented HP4-X design incorporates 4 double-stacked
desiccant beds . This nearly doubles the amount of desiccant
available for drying the process air stream, and because of the
tower design, the dryer is able to regenerate the desiccant in
the same time as our ARID-X series. This allows the dryer to
operate in very high humidity conditions without affecting the
process air dew point. In fact, this design produces dew point
levels of – 40’ to -80’ C for faster more complete drying of your
material.
Unique to the HP4-X 400/500/750 disiccant bed design is the
use of two sets of desiccant towers per zone. The first tower
in each Zone Set is the regeneration cycle “control tower”,
while the second tower of the Zone Set is “slaved” off the first.
Please see the Air Flow Diagram on Page 7.
Hopper Design
These dryers are designed to be used with our large capacity
1000, 1500, and 2000 lb. hoppers. Dri-Air’s ”all stainless”
hopper design utilizes a stainless steel inner shell surrounded
by a stainless steel jacketed insulation layer. The easily
removable stainless steel spreader cone promotes proper
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OPERA TING MANUAL - HP4-X 400-750 FM DRYERS
Revision 10/8/02
DRI-AIR INDUSTRIES, INC.
DRYER OPERATION/
FEATURES (Cont.)
material flow to ensure that the material is dried efficiently and
no undried material is left at the hopper bottom that needs to
be fed out prior to operating. Y ou must ensure that your
hopper is adequately sized for your usage rate and is kept
filled, to ensure that you have sufficient time to dry the
material.
Dryer Controls
The HP4-X series is supplied with the advanced
Microprocessor Control Module. The module includes a
mother board, display board and key pad that allow the
operator to easily monitor dryer performance and input
operational settings.
The Microprocessor Control Module is one of the most
sophisticated yet operator friendly controls on the market. It
has many more features than other PLC and Microprocessor
controls currently available. This module provides the
operator with more control and operational flexibility with the
dryer. These features and the operating instructions are
covered in detail in the Microprocessor Control Instruction
Manual included with your dryer.
OPERA TING MANUAL - HP4-X 400-750 FM DR YERS
Revision 10/8/02
Page 5
DRI-AIR INDUSTRIES, INC.
P
0
AIR FLOW SCHEMATIC FOR ARID-X 400/5
ZONE 2
ELECTRICAL BO
X
ZONE 1
PLAN VIEW
T/C
SECONDARY
HEATER
T/C
BLOWER
FILTER
ZONE VALVE ZONE VALVE
VENT
VENT
FROM
MATERIAL
HOPPER
T/C
SECONDARY
HEATER
T/C
REGENERATION
AND PROCESS
HEATER
Page 6
REGENERATION
AND PROCESS
HEATER
SAFETY
THERMAL
PROCESS HEATER
SAFETY
THERMAL
SAFETY THERMAL
TO MATERIAL HOP
OPERA TING MANUAL - HP4-X 400-750 FM DRYERS
Revision 10/8/02
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