ACS Sterling MDB Series User manual

MDB Series Dryers
Reference Manual (PN: 882.02900.00) for
Complete Operation and Installation Instructions
(Available online at www.sterlco.com)
Sterling Products, Inc. Part No: 882.99179.02
2900 S. 160th Street • New Berlin, WI 53151 USA Bulletin No: DH1-320.00
Tel. [phone] • Fax [phone]
Safety Concerns
Quickstart Installation Checklist
(Refer to main manual for complete installation instructions).
1. Check the process and return hoses for tight connections.
2. Check all companion equipment, such as the drying hopper; verify that the loading
system is ready for operation.
3. Verify that all dryer electrical connections are tight.
4. Verify that the thermocouples are properly installed in the dryer and at the hopper
outlet and inlet.
5. Verify temperature unit/scale (oF or oC).
6. Check blowers for proper rotation
Unit Operation (Refer to controller manual for complete operating instructions).
Start Up
1. Turn on the control.
2. To change any of the settings for the dryer, a valid user name and password will be required. The
valid user names are: Oper1,Oper2,Super1,and Super2. The passwords will be provided in the
MDB Electrical Manual.
3. All setup screens are accessed from the Setup Menu.
4. Settings are changed using on screen keypads. The keypad may be either a numeric or
alphanumeric one. Minimum and maximum values will be indicated, and these ranges can not be
circumvented.
5. Pressing on SYSTEM will allow the user to change settings pertaining to how data will be
displayed (Fahrenheit or Celsius? Metric or Standard?). As well, the alarm silence duration,
number of hoppers and sequence shutdown, are all adjusted through this screen.
6. Press on HOPPER to adjust settings related to the Process Temperature Setpoint, Deviation
limits for temperature alarms, standby time, process ID for the Hopper (s), hopper volume, heater
KW, and to change the material. The black and white arrow on the screen enables the user to
switch between multiple hoppers. This arrow is found on several setup screens and serves the
same purpose. Towards the middle of the screen there is a large pushbutton. This allows the
user to either Enable, Disable, Start, or Stop that specific hopper.
7. Pressing the material name on the DRYING HOPPER SETUP screen will bring up the
MATERIAL SELECT screen, which allows the user to load a saved recipe or to set up a new one.
Pressing SETUP will bring up another screen, the MATERIAL SETUP screen.
8. To create a new recipe, press NEW on the MATERIAL SETUP screen to bring up the NEW
MATERIAL SETUP screen.
9. Pressing AUTOTUNE on the HOPPER SETUP screen brings up a new screen that enables the
user to start or stop the Autotune for the process heater. Autotune should be performed on initial
startup after installation and any time a process change occurs that affects air flow.
10. Pressing DEWPOINT on the SETUP MENU will bring up the DEWPOINT SETUP screen. The
user will be able to adjust various settings that affect the Dewpoint Switch,Alarm, and Override
Time.
11. Pressing OVERDRY PROTECT on the SETUP MENU will allow the user to access the
OVERDRY PROTECTION screen. On this screen the user can set up the temperatures and
times that would trigger a setback to the normal drying temperature. As well, convey setback can
also be adjusted.
12. Hour Meters may be set up by pressing HOUR METERS on the SETUP MENU. Hold down the
“R” for 3 seconds to reset the item. Only “Since Service” is resettable.
13. To start the dryer, go to the MAIN MENU and press DRYER STATUS. On the following screen

MDB Series Dryers
Reference Manual (PN: 882.02900.00) for
Complete Operation and Installation Instructions
(Available online at www.sterlco.com)
Sterling Products, Inc. Part No: 882.99179.02
2900 S. 160th Street • New Berlin, WI 53151 USA Bulletin No: DH1-320.00
Tel. [phone] • Fax [phone]
press START/STOP to start the system.
TROUBLE SHOOTING
NOTE: For additional troubleshooting tips see the Troubleshooting section in the Operation and Installation Manual.
PROBLEM(
POSSIBLE(CAUSE(
CORRECTIVE(ACTION(
(
!
!
LOSS!OR!REDUCTION!OF!PROCESS!AIR!
TEMPERATURE.!
PROCESS!HEATERS!ARE!FAULTY.!
CHECK!FOR!OPEN!HEATERS.!!REPLACE!IF!
REQUIRED.!
SOLID6STATE!RELAY!IS!FAULTY.!
REPLACE!SOLID6STATE!RELAY.!
PROCESS!TEMPERATURE!WAS!IMPROPERLY!
ADJUSTED.!
REVIEW!PRODUCT!FOR!PROPER!SETTING.!!TRAIN!
PLANT!PERSONNEL!ABOUT!PROPER!
TEMPERATURE!SETPOINT!AND!OPERATION.!
!
!
LOSS!OR!REDUCTION!IN!DRYING!CAPACITY.!
PROCESS!HEATERS!ARE!FAULTY.!
REPLACE.!
DESICCANT!BEDS!ARE!CONTAMINATED.!
REPLACE!DESICCANT.!
MATERIAL!BEING!DRIED!DIFFERS!FROM!MATERIAL!
SPECIFIED!AT!THE!TIME!OF!PURCHASE.!
DRYING!SYSTEMS!ARE!DESIGNED!FOR!THE!
MATERIAL!WHICH!WAS!ORIGINALLY!SPECIFIED.!!
DIFFERENT!MATERIALS!MAY!NEED!A!LONGER!
RESIDENCE!TIME!OR!DIFFERENT!DRYING!
TEMPERATURE.!
BREAK!IN!FLEX!HOSE!TO/FROM!DRYING!HOPPER.!
INSPECT!FOR!AIR!LEAKS,!REPLACE!IF!NECESSARY.!
AIRFLOW!VALVE!STICKING!OR!FAILING!TO!SHIFT.!
CHECK!FOR!PROPER!OPERATION!OF!VALVE!
ACTUATORS.REPAIR!OR!REPLACE!IF!NECESSARY.!
BLOWER!FINS!FILLED!WITH!DUST!OR!
CONTAMINANTS.!
!
REMOVE!BLOWER!SIDE!PLATE,!CLEAN!BAFFLES,!
REPLACE.!!REPLACE!FILTER!ELEMENTS.!
!
!
!
MATERIAL!IN!DRYING!HOPPER!CAKES!OR!
MELTDOWN!OCCURS.!
PROCESS!TEMPERATURE!SET!TOO!HIGH!DUE!TO!
OPERATOR!ERROR.!
CHECK!RESIN!MANUFACTURER’S!DATA!SHEET!
FOR!PROPER!DRYING!TEMPERATURE.!!MAKE!
SURE!PLANT!PERSONNEL!ARE!AWARE!OF!THE!
CORRECT!PROCESS!TEMPERATURE!SET!POINT.!
HIGH!TEMPERATURE!ALARM!NOT!SET!PROPERLY.!
RESET!HIGH!TEMPERATURE!ALARM.!
PROCESS!SET!POINT!IS!OUT!OF!ACCEPTABLE!
RANGE.!
RESTORE!TEMPERATURE!CONTROLLER!TO!
FACTORY!PRE6SETS.!
FUNCTION!SET!FOR!DEGREES!CELSIUS!(0C),!SET!
POINT!AT!DEGREES!FAHRENHEIT!(0F).!
VERIFY!CORRECT!CELSIUS!OR!FAHRENHEIT!
SETTINGS.!
!
!
!
POOR!DEW!POINT!PERFORMANCE.!
BURNED!OUT!REGEN!HEATER.!
REPAIR!OR!REPLACE.!
CONTAMINATED!OR!WORN!OUT!DESICCANT.!
REPLACE.!
LEAKING!PROCESS!AIR!HOSES.!
REPAIR!OR!REPLACE.!
DRYER!OPERATES!BEYOND!ITS!CAPACITY.!
CHECK!DRYER!AND!DRYING!HOPPER!SIZING.!
BAD!DEW!POINT!SENSOR.!
REPLACE.!
FOULED!DEW!POINT!SENSOR!MANIFOLD.!
CLEAR!OBSTRUCTION.!!AIR!SHOULD!FLOW!
FREELY!THROUGH!SENSOR.!
!
!
!
!
PROCESS!VALUE!IS!ABNORMAL!OR!NOT!
OBTAINED.!
INPUT!POLARITY!ON!THERMOCOUPLE!IS!WRONG!
OR!CONNECTION!IS!WRONG.!
PROPERLY!WIRE!THE!TERMINALS.!
NO!COMPENSATING!LEAD!WIRES!USED!FOR!
EXTENSION!OF!THE!THERMOCOUPLE.!
USE!PROPER!COMPENSATING!LEAD!WIRES!AND!
TERMINALS.!
THERMOCOUPLE!AND!CONTROLLER!ARE!
CONNECTED!BY!WIRES!OTHER!THAN!PROPER!LEAD!
WIRES.!
USE!A!DEDICATED!THERMOCOUPLE!
CONNECTOR.!!IF!A!CONNECTOR!IS!A!METAL!
DIFFERENT!FROM!THE!THERMOCOUPLE!AND!
CONTROLLER,!AN!ERROR!MAY!RESULT.!
SENSOR!IS!BROKEN!OR!SHORT6CIRCUITED!
REPLACE.!
THE!CONTROLLER!IS!INFLUENCED!BY!NOISE!OR!
OTHER!INDUCTION.!
SEPARATE!INPUT!WIRES!AS!FAR!AS!POSSIBLE!
FROM!THE!ORIGIN!OF!THE!NOISE.!
CELSIUS!TEMPERATURES!USED!INSTEAD!OF!
FAHRENHEIT!OR!VICE!VERSA.!
SETUP!MODE!LEVEL!2!DISPLAY!d6U.!!S6V!SHOWS!
SETTING.!
GROUNDED!THERMOCOUPLE!
USE!AN!UN6GROUNDED!THERMOCOUPLE!

MDB Series Dryers
Reference Manual (PN: 882.02900.00) for
Complete Operation and Installation Instructions
(Available online at www.sterlco.com)
Sterling Products, Inc. Part No: 882.99179.02
2900 S. 160th Street • New Berlin, WI 53151 USA Bulletin No: DH1-320.00
Tel. [phone] • Fax [phone]
TECHNICAL SPECIFICATIONS
MDB 85
MDB 170
MDB 225
MDB 380
Process air flow, cfm (m3/hr)
50 (85)
100 (170)
150 (250)
225 (380)
Hose conn. dia., in. (mm)
2.5 (64)
2.5 (64)
3 (75)
3 (75)
Temp. range, oF (oC)
140-400 (60-204)
140-400 (60-204)
185-400 (85-204)
160-400 (71-204)
FLA
460/3/60
12
19
31
44
Running Amps
10
15
25
36
FLA
230/3/60
24
38
61
88
Running Amps
19
30
49
70
Process blower, hp (kW)
0.75 (0.6)
1 (0.75)
4 (3)
5 (3.73)
Regen. Blower, hp (KW)
0.33 (0.25)
0.33 (0.25)
0.5 (0.37)
0.5 (0.37)
Length, in. (mm)
27 (686)
27 (686)
37 (940)
37 (940)
Width, in. (mm)
27 (686)
27 (686)
37 (940)
37 (940)
Height, in. (mm)
68 (1727)
68 (1727)
79 (2006)
87 (2210)
Shipping Weight, lbs. (kgs.)
440 (200)
475 (216)
750 (340)
850 (386)
MDB 85 & MDB 170
MDB 255 & MDB 380

MDB Series Dryers
Reference Manual (PN: 882.02900.00) for
Complete Operation and Installation Instructions
(Available online at www.sterlco.com)
Sterling Products, Inc. Part No: 882.99179.02
2900 S. 160th Street • New Berlin, WI 53151 USA Bulletin No: DH1-320.00
Tel. [phone] • Fax [phone]
Orange: Standard Hosing
Green: Option Specific Hosing
Blue: Dewpoint, Dirty Filter, and Pressure Tubing