Dri-Air Industries HA750B, HA1500B, HA1000B Operating Manual

DRI-AIR INDUSTRIES, INC.

HA750B - 1500B

HOT AIR DRYER

OPERATING MANUAL

OPERA TING MANUAL - HA750-1500B HOT AIR DR YERS
Revision 10/8/02

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DRI-AIR INDUSTRIES, INC.

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DRI-AIR INDUSTRIES, INC.

16 THOMPSON ROAD
P.O. BOX 1020
EAST WINDSOR, CT 06088-1020

Tel. [phone]
FAX [phone]

Internet http://www.dri-air.com
e-mail: [e-mail]

OPERA TING MANUAL - HA750-1500B HOT AIR DRYERS
Revision 10/8/02

DRI-AIR INDUSTRIES, INC.

CONTENTS

DRYER OPERA TION/FEATURES---------------------------4
INST ALLATION PROCEDURE -------------------------------6

Electrical Connection ---------------------------------------6
Check for correct motor rotation -------------------------6
Thermocouple Connection --------------------------------6

START-UP PROCEDURE -------------------------------------7

Set Temperature: -------------------------------------------- 7

DRYER OPERATION-TROUBLE SHOOTING ----------- 8

Dryer Operation---------------------------------------------- 8

Trouble-Shooting --------------------------------------------9
P AR TS LIST HA750/1000 ----------------------------------- 10
P A R TS LIST HA1500 ----------------------------------------- 11

OPERA TING MANUAL - HA750-1500B HOT AIR DR YERS
Revision 10/8/02

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DRI-AIR INDUSTRIES, INC.

DRYER OPERATION/

FEATURES

The HA750-1500 Hot Air dryer series is ideal for drying non­hygroscopic resins such as polypropylene and polyethylene.
The moisture associated with these resins resides on the
surface of the pellets. The surface moisture on these resins is
easily removed by a flow of hot air.

Resins such as polycarbonates, ABS, and Nylons are
hygroscopic, absorbing moisture into the pellet. These resins
require a dryer equipped to desiccate the air stream and may
not be suitable for a Hot Air dryer.

Air Flow

The airflow of the HA series dryers is circulated through a
heater cabinet containing up to 9 tubular heaters and the
material hopper by a fan type blower specified below.

HA750 750 cfm Blower
HA1000 1000 cfm Blower
HA1500 1500 cfm Blower

The HA series dryers are compatible with many types of
material hoppers. The hopper must be designed to allow
good material flow and should be equipped with a diffuser
basket so that air flow through the hopper is not impeded. To
ensure proper air flow, we strongly recommend that you use a
Dri-Air hopper described below.

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
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. You 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 HA series dryers are supplied with a digital temperature
controller that allows the operator to easily monitor dryer
performance and input operational settings. The controller is
factory set and requires no additional programming.

The controller is used in conjunction with a 6 inch long 0.125”

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OPERA TING MANUAL - HA750-1500B HOT AIR DRYERS
Revision 10/8/02

DRI-AIR INDUSTRIES, INC.

DRYER OPERATION/

FEATURES (Cont.)

diameter Type J thermocouple that is placed in inlet air stream
of the material hopper.

These dryers are designed to operate between 120 and 250
degrees F (49-121 degrees C). Operating outside these
parameters may lead to temperature control problems.

Dryer Configuration

The HA750 - 1500 series dryers are designed to be portable
and utilize a very compact footprint. The dryer’s base
dimensions are typically 39” wide by 42” long by 78” high.
(99.1 x 106.7 x 198.1 cm) The dryers are equipped to operate
at 380/460/600 volts, 3 phase at 50/60 HZ.

The dryer is configured with a 6” (15.3 cm) O.D. process air
outlet and supplied with 12 feet (3.6 meters) of 500 degree F
(260 deg. C) rated hose to connect with the material hopper
and a 0.125” Type J thermocouple with an armored connector
wire.

Setup and installation instructions are covered on page 6 of
this manual.

OPERA TING MANUAL - HA750-1500B HOT AIR DR YERS
Revision 10/8/02

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