Dri-Air Industries FM Series Manual de usuario

1 
 
 
 
 
 
 
 
Contents 
 
FM DRYERS...................................................................................................................2 
INSTALLATION PROCEDURE.......................................................................................5 
QUICK START-UP GUIDE..............................................................................................6 
DRYER OPERATION TROUBLE SHOOTING................................................................6 
PART LIST......................................................................................................................8 
SMART TOUCH CONTROLS GUIDE...........................................................................10 
MAIN OPERATING SCREEN: ......................................................................................10 
SYSTEM SETUP SCREEN:..........................................................................................11 
7 DAY TIMER:...............................................................................................................11 
FACTORY SETTINGS:.................................................................................................12 
SETBACK (option) ........................................................................................................13 
LOADER RECEIVER (option).......................................................................................15 
RECIPE MENU: ............................................................................................................16 
DIAGNOSTICS SCREEN:.............................................................................................17 
INPUTS:........................................................................................................................17 
OUTPUTS:....................................................................................................................18 
TEMPS:.........................................................................................................................18 
TREND GRAPHS:.........................................................................................................19 
EVENT LOG:.................................................................................................................20 
ALARMS: ......................................................................................................................21 
DIGITAL KEYPAD SCREEN:........................................................................................22 
ALPHA-NUMERIC KEYPAD:........................................................................................23 
TROUBLESHOOTING:.................................................................................................24 
Hopper Ban 
STC SMART TOUCH CONTROLS –HP4-X 25/35 FM 
 
OPERATING MANUAL 

FM DRYERS

FEATURES:

The FM series dryers are the traditional dryer and hopper where the dryer is on the floor

positioned next to the molding machine and the hopper is mounted on top of the molding

machine. They are ideal where floor space is limited and material changes are infrequent. The

FM dryer series utilize the HP4-X four bed design that provides a constant supply of dry air to

the material hopper.

A FM can also be used with a hopper bank to provide hot, dry air to a hopper bank where the air

will then be heated up by each hopper’s booster heater.

HP4-X 4 Bed Design

While one bed is removing moisture from the process air the other is regenerating by heating

the desiccant to a high temperature. Once the regenerated bed cools down, the Zone Valve

switches the airflow, and the newly regenerated bed is used to desiccate the process air stream.

The saturated bed is now regenerated in the same manner, completing the regeneration cycle

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 4.

Dryer process operating temperatures are 140 degrees F (minimum) to 325 degrees F

(maximum) with an accuracy of +/- 3 degrees. When the drying temperature is 275 degrees F

or higher, it is necessary to install a water-cooled heat exchanger on the return hose of the dryer

to ensure maximum dryer efficiency. If you do not have a heat exchanger and will be operating

275 degrees F or higher, please contact the factory for heat exchanger pricing.

Hopper Design

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 dried

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.

STC Smart Touch Controls

The FM series are supplied with the Smart Touch Control (STC).

The new STC (Smart Touch Control) was introduced for optimum operation of the dryer and is

as user friendly as possible. The easy-to-see, menu driven HMI allows access to all operating

parameters and enables the operator to navigate through all settings and data. All data and fault

conditions are shown on the display in a format that is easy to understand and stored for

retention and reports

As with earlier designs, the STC is driven by thermocouples strategically located in the towers,

hoses to the hoppers, and other locations to properly control the operation of the dryer. Other

inputs monitor the performance of the dryer for safe and efficient operation.

Please refer to the STC controls section following the dryer operation.

INSTALLATION PROCEDURE

Electrical Connection:

Open electrical access door on the front of the machine by turning the disconnect off and

turning the lower clamping screw 1/2 turn counterclockwise. Locate the disconnect by following

the operating handle down to the electrical panel.

Insert the incoming power cable or conduit through the hole provided on the side of the

machine. Wire incoming power to the top of the disconnect as shownin the diagramsbelow.

« use approved

wire and fastening

means «

3 PHASE DRYER INSTALLATION CHECK FOR CORRECT MOTOR ROTATION

BEFORE RUNNING DRYER

In case the blower does not have a cooling fan, remove the 1.5” process hose from top of dryer

and press the “start” button. Air should be blowing out the port on the top of the dryer. If the air

is sucking in on this port, the rotation is backwards can be reversed on the incoming power

leads.

QUICK START-UP GUIDE

Operating this unit is very simple. Once the dryer is connected to the facility power supply, the

unit can be started by turning the disconnect handle located in the upper right-hand corner of

the electrical panel enclosure to the ON position and pressing the START button on the HMI. To

shut the dryer off, simply push the STOP button on the HMI.

For a more detailed explanation, please refer to the STC control section later in this manual.

DRYER OPERATION TROUBLE SHOOTING

The SmartTouch Controls were designed for quick diagnosis of problems. .The following

steps should be done before proceeding with other diagnostic steps. Alarm codes that

occur on the STC controls are further detailed in the controls section of this manual.

Check the Power Circuit:

1. Incoming fuses or circuit breaker

2. Check secondary fuses or circuit breakers.

3. Is power supplied to the unit?

4. Check heater continuity using a volt ohmmeter.

Compressed Air:

For those models that require compressed air.

5. Is compressed air connected with at least 60 PSI

6. Check water separator and drain if necessary

7. Pressure gage should read 60 PSI

Air Flow Circuit:

8. Ensure zone valve position is correct. Remove the hoses from the top of the desiccant

towers and compare the airflow to that in the provided airflow diagram in this manual.

9. Make sure that all hoses are connected, not crushed, and free from obstructions.

10. Inspect filter and make sure cover is tight and the filter is clean and in good condition.

Control Circuit:

11. Using the PLC motherboard indicator lights as a guide for the dryer regeneration

cycle, check that all inputs/outputs are proper for the part of the regeneration cycle

that the machine is in.

12. Monitor the PLC output lights to ensure the corresponding LED on the power solid

state relay is illuminated and there is an output voltage to the heater.

Operating Conditions:

13. Check the process temperature. It should not be set below 140° F (60° C) because

the unit will go into high temp alarm.

If the temp exceeds the set point check the following:

1. Remove the hose from the top of the hopper to check air flow. There should be air flow

out of the hopper with a suction on the hose. If there is little or no flow, check the inlet

hose.

2. Inspect the filter to make sure that it is clean and not affecting the air flow.

3. Check to see if one of the solid-state relays has failed on. Using an ammeter or

voltmeter on the output to the heater, see if there is power when the LED is not lit

which will indicate a failed relay.

4. Check the valve position.

The Dri-Air valve is designed to provide very little flow restriction and no leakage. It

incorporates high temperature spool for years of trouble-free service. The electrical

controls are built into the end of the valve for long lasting performance.

DO NOT PUT FINGERS INTO VALVE WITH POWER ON

Check all electrical connections to make sure they are tight.

Contact factory with the serial number of the dryer for a replacement valve.

PART LIST

Voltage

208V

230V

400V

480V

575V

Cone

83342

83373

83982

83374

84235

HP/Middle

82373

83958

82505

84260

Process

82343

84204

82319

84065

Description

Part #

Amount

Valve Zone STC 24V Assembly

Smart touch

89167

Blower 25CFM 3PH

86867

Sensor RH STC Control for

84936 RH Board Assembly

85374

Gasket 6” for 18-35 towers

81028

Filter Element 25-35 CFM for

DAC 25-35 CFM Dryers

81055

Thermocouple 1/8” x 6” Female

Type J

82174

Switch Pressure Ultra Low 1.5”

for STC Blower Rotation

86155

Thermocouple 1/8” x 3” Female

Type J

87361

Description

Part #

Amount

Contactor 12A 600V 4P 24VDC

85355

Overload .4-.63 Amp

Overload .63-1 Amp

–LS Interchangeable w/ Carlo

Gavazzi

85358

85359

Relay SS 40A 480V 2P 15-32

VDC

85364

Switch Disconnect 40A (Handle,

Shaft, Switch)

85365

Relay 1P DT 24VDC 6A card

wago

89384

STC HMI

85089

STC PLC

85090

Mother Board STC Rev3A

STC/HMI

89030

Power Supply 24VDC 30W STC

89259

Transformer

85959

SMART TOUCH CONTROLS GUIDE

MAIN OPERATING SCREEN:

The operating screen displays all of the dryer performance information in an easy-to-read format

visible from a long distance. The large STOP/START button is incorporated into the screen rather

than being located remotely.

All common operator inputs are located on

this main screen including starting and

stopping the dryer, closed loop loader

control and temperature changes. The

asterisk (next to the setpoint) indicates the

setback function is turned on. The setpoint

temperature numbers change to red when

the dryer is in setback.

To change the process temperature, press

the SETPOINT number to display the input

screen. Select the new temperature setting

and press ENT.

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