Supplement Washer/Extractor AC Adjustable Frequency Drive Information For Allen-Bradley Model Numbers: 160 1305 1336 PowerFlex 40 U072M PHM1396C TMB1396C U074M FA U RE LT AD Y U071M U071M U073M Part No.
Installation/Operation Supplement Table of Contents General Information........................................................................... Nameplate Location.............................................................................. General Inspection ................................................................................ Storage .................................................................................................. 3 4 5 5 Installation/Wiring .............................
Installation/Operation Supplement Fault Display and Troubleshooting Information............................. Fault Code Identification ...................................................................... A-B 160............................................................................................ A-B 1305/A-B 1336......................................................................... PowerFlex Series Drives..................................................................
General Information General Information Obtain specific steam service pipe sizes from steam system supplier or a qualified steam fitter. ● This drive contains ESD (Electrostatic Discharge) sensitive parts and assemblies. Static control precautions are required when installing, testing, or servicing this assembly. Component damage may result if ESD control procedures are not followed. ● An incorrectly applied or installed drive can result in component damage or a reduction in product life.
General Information Nameplate Location Pertinent drive information used in obtaining information on drive operation or replacement is located on the nameplate shown in Figures 1 through 3.
General Information General Inspection Storage Upon delivery, verify the item’s nameplate catalog number against the purchase order. The drive should remain in its shipping container prior to installation. If the equipment is not to be used for a period of time, it must be stored according to the following instructions in order to maintain warranty coverage: Before the installation and start-up of the drive, a general inspection of the mechanical integrity (i.e., loose parts, wires, connections, etc.
Installation/Wiring Installation/Wiring CAUTION CAUTION An incorrectly installed system can result in component damage or reduction in product life. The most common causes are: 1. Wiring AC line to drive output or control terminals. ELECTRIC SHOCK HAZARD! Service and maintenance to be performed only by an authorized technician. Disconnect power before opening any access panels. W661 2. EXTERNAL voltage application to control terminals. SINGLE PHASE MACHINES 3. Incorrect or inadequate AC supply.
Installation/Wiring Input Power Conditioning The drive is suitable for direct connection to input power within the rated voltage of the drive. Listed in Table 1 are certain input power conditions which may cause component damage or reduction in product life. If any of the conditions exist, as described in Table 1, install one of the devices listed under the heading Corrective Action on the line side of the drive. IMPORTANT: Only one device per branch circuit is required.
Installation/Wiring A-B RFI Filter Part Number Information Drive P/N Drive Catalog Machine Voltage Filter P/N Bulletin 160 Series C 370855 160-AA04 Series C 200-240V/1 Phase 330282 370855 160-AA04 Series C 200-240V/3 Phase 330281 370856 160-BA03 Series C 380-480V/3 Phase 330281 370857 160-AA08 Series C 200-240V/1 Phase 330285 370857 160-AA08 Series C 200-240V/3 Phase 330280 370858 160-BA04 Series C 380-480V/3 Phase 330281 370843 160-AA12 Series C 200-240V/1 Phase Not Availabl
Installation/Wiring Table 2 (continued) PowerFlex 40 Drive P/N Drive Catalog Machine Voltage Filter p/n F8044301 22B-B017N104N 200-240V 50-60Hz 3 phase F8053901 F8044401 22B-D010N104N 380-480V 50-60Hz 3 phase F8053902 F200309300 22B-B033N104AN 200-240V 50-60Hz 3 phase F8054001 F200309400 22B-D017N104AN 380-480V 50-60Hz 3 phase F8054002 *Applies to *C 18-50-lb. models or *F18- and 25-lb. models built before July 1999 with Series A or B drives.
Installation/Wiring Terminal Block Access A-B 160 The A-B 160 power and control terminal blocks are located externally. Refer to Figure 6. 10 11 F A R UL E T A D Y To reduce risk of electric shock, severe injury or death, allow machine power to remain off for three minutes minimum prior to working in and around AC drive. Proceed with caution. 1 2 3 4 5 6 7 8 9 WARNING W662 U/T The following information illustrates the terminal block designations for each of the drive models.
Installation/Wiring A-B 1305 4. For drives equipped with a Human Interface Module (HIM), press retaining lever directly beneath the HIM and slide the HIM downward to remove it from drive. To access the power and control terminal blocks, refer to Figure 7 and perform the following procedure: 1. Remove power from the machine at main disconnect. 5. Loosen front panel fastener by rotating counterclockwise 90 degrees. Refer to Figure 7. 2. Lower hinged panel located below HIM or blank front cover. 6.
Installation/Wiring A-B 1336 2. Loosen the front cover fastener located at the base of the front cover. Refer to Figure 8. To access the power and control terminal blocks, perform the following procedure: 3. Lift off cover. 1. Remove power from machine at main disconnect. Verify power light is off. NOTE: HIM unit extension unit cable inserts into separate port for 1305 and 1336 A-B drives. A-B 1336 TB3 ES C SE Sto +0 pped .00 Hz Sto +0 pped .
Installation/Wiring PowerFlex 40 Opening the Cover 1. Press and hold in the tabs on each side of the cover. Refer to Figure 9. 2. Pull the cover out and up to release. POWERFLEX 40 COVER PHM636N PHM636N Figure 9 Power Terminal Block The drive utilizes a finger guard over the power wiring terminals. To remove: 1. Press in and hold the locking tab. 2. Slide finger guard down and out. Refer to Figure 10. 3. Replace the finger guard when wiring is complete.
Installation/Wiring Power Terminal Block Description/ Torque Specifications A-B 160 Input and output power connections are performed through two separate terminal blocks. Refer to Figure 11. .
Installation/Wiring A-B 160 Power Block Terminal (TB1, TB2, GRD) Terminals Description GRD Earth Ground R, S, T (L1, L2, L3) AC Input Line Terminals BR+, BR- Dynamic Brake Resistor Option – Refer to instructions with option DC+, DC- Capacitor Module Option U, V, W (T1, T2, T3) Motor Connection A-B 1305 Input and output power connections are performed through a ten-position terminal block, TB1. Refer to Figure 12.
Installation/Wiring A-B 1336 Input and output connections are performed through terminal block TB1. Refer to Figures 13, 14 and 15. A1-A3 Frame A4 Frame 200-240V, 0.37 – 3.7 kW (0.5 – 5 HP) Terminal Designations 380-480V, 0.37 – 3.7 kW (7.5 – 10 HP) Terminal Designations 380-480V, 5.5 – 7.5 kW (7.
Installation/Wiring PowerFlex 40 PowerFlex 400 Input and Output Power Terminals (TB1) Input and Output Power Terminals (TB1) B Frame Frame D R/L 1 S/L 2 T/L 3 U/T 1 V/T 2 W/T 3 R/L 1 S/L 2 DC- DC+ BR+ T/L 3 P1 P2 DC- U/T 1 V/T 2 W/T 3 BR- PHM742N PHM741N Figure 14 Figure 15 PowerFlex 400 PowerFlex Power Block Terminal (TBI) PowerFlex 40 Power Block Terminal (TB1) Terminal Description Terminal Description R/L1, S/L2, T/L3 3-phase Power Input R/L1, S/L2, T/L3 Single-phase or 3-ph
Installation/Wiring Control Terminal Blocks Description/Control Logic/Torque Specifications Control terminal functions are unique to each AllenBradley Drive. Each drive’s control terminal is addressed independently.
Installation/Wiring A-B 160 Control Logic To activate a control input (i.e., SW1, SW2, etc.), the terminal is connected to a common terminal (TB3-3 or TB3-7) to lower the signal voltage to a low condition (less than 1 Volt DC). The following truth table (Table 14) designates the preset speed selection based on the inputs to the control terminals. A disconnected control terminal will seek the high signal voltage condition (greater than 10V DC).
Installation/Wiring The Preset and Input Status displays of 1s and 0s represent the drive’s display of parameters #12 and #15. These inputs can be viewed in the status display with a Program Key Module (Parameter Unit). Refer to Section 3. Parameter #15 displays the Preset Status and Parameter #12 displays the Input Status. When voltage is high (inactive) for an input, the status display will read “0” (Logic 0). When voltage is low (active) for an input, the status display will read “1” (Logic 1).
Installation/Wiring Table 17 contains the correct display value for each function. The first digit in the Input Status parameter does not correspond to a control input function. Refer to Table 17. NOTE: The Preset Speed logic is specific to the type of computer the machine is equipped with (i.e., WE-6 or V-Control). Running Status Some machines require an output from the drive indicating the drive is running. TB2-19 and TB2-20 connect to the computer (V-Computer, EDC).
Installation/Wiring Input Mode = “UniMac” Parameter #21 Typical Configuration Washer-Extractor Control Hardware 1305 Drive Hardware TB2 1 2 3 4 5 Jumper, Drive Interlock or Out-of-Balance Switch Output Balance Detection 6 STF - Start Forward 7 Common 8 Stop 9 Output - Balance Relay 10 1/2 Wash Relay On Some Machines 11 Enable 12 Common 13 STR - Start Reverse 14 Unused 15 Common 16 SW1 - Preset Input 1 17 SW2 - Preset Input 2 18 SW3 - Preset Input 3 19 Output Run Indication 2
Installation/Wiring A-B 1305 Control Logic H – Control Voltage High (Approximately 5Volts DC)Logic 0 L – Control Voltage Low (Less than 1Volt DC) Logic 1 DC Volt Meter Red Probe Terminal Location 18 17 16 13 8 6 DC Volt Meter Black Probe Terminal Location 7 7 7 7 7 7 Forward Motion/ STF Input Status Parameter #55 A-B 1305 Frequency Preset Parameter Preset # Preset Input/ SW3 Preset Input/ SW2 Preset Input/ SW1 Reverse Motion/ STR Stop X SW3 SW2 SW1 N/A STR Stop STF V-Control
Installation/Wiring A-B 1336 Control Terminal (TB2/TB3) Function WARNING To reduce risk of electric shock, severe injury or death, allow machine power to remain off for three minutes minimum prior to working in and around AC drive. Proceed with caution. W662 WARNING The controller is supplied with an internal 5V supply. Dry contacts or open collectors are required for discrete control inputs. If an external voltage is applied, component failure could occur.
Installation/Wiring Fault Indicator Light CAUTION MACHINE DAMAGE AND/OR PERSONAL INJURY. Never jumper inputs if not previously configured with jumpers as identified on the applicable electrical schematic. Jumpering these inputs will override safety features. W665 The A-B 1336 is equipped with a mechanical relay which transitions when a drive fault occurs. Some machines use this contact for lighting an external indicator light.
Installation/Wiring Input Mode =“12” Parameter #21 Typical Configuration Washer-Extractor Control Hardware 1336 Drive Hardware TB3 1 2 3 1 19 STF - Start Forward 20 Stop 21 Common 22 STR - Start Reverse 23 Common 24 Motor Temp Input 25 Common 26 SW3 - Preset Input 3 27 SW2 - Preset Input 2 28 SW1 - Preset Input 1 29 Common 30 Enable TB2 Resistor or Potentiometer on some Models 5 1 +5v 2 A/D 3 Common 12 13 Fault Indicator Contact (Some Machines) 14 15 Output Balance D
Installation/Wiring A-B 1337 Control Terminal Block Designations Terminal Number Signal Terminal Number Signal Machine Use 28, 29 SW1 Preset Speed Input #1 Machine Use True Earth Not Used 27, 29 SW2 Preset Speed Input #2 External Speed Pot Select Machines Only 26, 29 SW3 Preset Speed Input #3 4 Signal Common Specialty Machines Only 29 5 0 – 10V DC Input Specialty Machines Only 6 4 – 20 mA Input Specialty Machines Only 7, 8 Pulse Input for Frequency Specialty Machines Only 9
Installation/Wiring A-B 1336-Series Drive Control Logic H – Signal Voltage High (Approx.
Installation/Wiring A-B PowerFlex 40/400 Control Terminal Function WARNING To reduce risk of electric shock, severe injury or death, allow machine power to remain off for three minutes minimum prior to working in and around AC drive. Proceed with caution. W662 NOTE: Do not connect AC drive digital common, analog common, or opto common terminals to chassis ground. Input Mode Parameter The control terminal functions are determined in part by the “Start Source” parameter #36.
Installation/Wiring PowerFlex 40 Control Terminal Block Designations ‘ Control Wiring Block Diagram Enable Jumper (4) Typical SNK Wiring Stop 01 02 03 SNK SRC 04 05 06 07 08 09 +24V 11 +10V 12 13 14 Relay N.O. Relay Common Relay N.C.
Installation/Wiring PowerFlex 400 Control Terminal Block Designations ‘ Control Wiring Block Diagram 1 of 7 Digital Input Circuits 01 02 Enable Jumper ENBL 03 SNK SRC 04 05 SNK 06 SRC 07 08 #1 Relay N.O. #1 Relay Common #1 Relay N.C. #2 Relay N.O. #2 Relay Common #2 Relay N.C.
Installation/Wiring PowerFlex 40 Drive Control Logic H – Signal Voltage High (approximately 24V DC)Logic 0 L – Signal Voltage Low (less than 1V DC) Logic 1 Digital In 3 Digital In 2 Ditital In 1 Fwd Stop Rev DC Volt Meter Red Probe Terminal Location 7 6 5 2 1 3 DC Volt Meter Black Probe Terminal Location 4 4 4 4 4 4 Terminal #5 (SW1) Terminal #2 (STF) Terminal #1 (Stop) Terminal #3 (STR) Digital Input Status – Parameter 14 Control Input Status – Parameter 13 L H 0 0 0 0 0 0
Installation/Wiring PowerFlex 400 Drive Control Logic H – Signal Voltage High (approximately 24V DC)Logic 0 L – Signal Voltage Low (less than 1V DC) Logic 1 3 DC Volt Meter Black Probe Terminal Location 4 4 4 4 4 4 Terminal #5 (SW1) Terminal #2 (STF) Terminal #1 (Stop) Terminal #3 (STR) Control Input Status Parameter 302 Fwd (STF) 1 Rev (STR) DC Volt Meter Red Probe Terminal Location 2 Stop Rev 5 Digital In 1 Stop 6 Digital In 2 Fwd 7 Digital In 3 Ditital In 1 *Digital In 4 D
Installation/Wiring Computer Output Boards Figures 21, 22, and 24 show the output boards of the four controls available. Connections identified on these figures set speed and direction of the drive.
Installation/Wiring Drive Harness Connection H13 16 9 8 1 P/N: F8108001 UniLinc Output Board PHM738N Figure 24 F232120 © Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT 35
Installation/Wiring Control Wire During troubleshooting, if the wire path between the control board and the drive is uncertain, refer to Table 25 for wire connection numbers. Control Wire Connection Reference Table.
AC Drive Diagnostics/Parameter Viewing AC Drive Diagnostics/Parameter Viewing A-B 160 Program Keypad Module (PKM or Parameter Unit) Installation/Removal The following are instructions for installing/removing the Program Keypad Module (P/N F370851) on the AB 160 Adjustable Frequency Drive for parameter viewing and basic troubleshooting. Refer to Table 14. Installing the PKM 1. Remove power from the machine at main disconnect. Delay approximately three minutes. 2.
AC Drive Diagnostics/Parameter Viewing 3 0. FA FA U RE LT AD Y ESC 0. 0 SEL Status Display Cover U091M PROGRAM KEYPAD MODULE (PKM OR PARAMETER UNIT) Program Keypad Module (PKM) Figure 26 PKM – Key Explanation ESC Escape key. Use to return to last or original position. 30 . ES C SE L 0. 0 SEL U090ME3A Select key. Use to move cursor position. STATUS DISPLAY COVER Figure 25 Program Keypad Module (PKM) Operation The PKM contains a six-digit display on the front.
AC Drive Diagnostics/Parameter Viewing Viewing a Display Group A-B160 Display Mode Parameter Set (Parameters #1 – 16 for Series A & B or Parameters #1 – 19 for Series C) 1 Output Frequency 2 Output Voltage 3 Output Current 4 Output Power 5 Bus Voltage 6 Frequency Command 7 Last Fault 8 Heatsink Temperature 9 Controller Status 10 Controller Type 11 Control Version 12 Input Status 13 Power Factor Angle 14 Memory Probe Address 15 Preset Status 16 Balance Angle *17 Fault Buf
AC Drive Diagnostics/Parameter Viewing A-B 160 CopyCat Keypad Remote Programming Adapter (RPA) Installation/Removal (For use with A-B 160 Series C Drives P/N F370843, F370844, and F370853 – F370858) Installing the RPA The operation of the CopyCat Keypad requires the installation of the 160 Series C Parameter Unit Kit (F798751). The kit includes the following parts. F370733 – F370732 – 2. Insert a small screwdriver into slot, pry back, and remove status display cover. Refer to Figure 27.
AC Drive Diagnostics/Parameter Viewing Removing the RPA CAUTION It is required that the RPA be earth grounded to improve noise immunity and to guard the CopyCat Keypad against hazardous DC bus potential voltages. W667 1. Remove power from machine at main disconnect. Delay approximately three minutes. 2. Insert small screwdriver into slot, pry back, and pivot module out. Avoid bending or twisting contact pins located underneath center portion of the module. Refer to Figure 27. 3.
AC Drive Diagnostics/Parameter Viewing CopyCat Keypad Operation SEL Select key. In Program mode, press to use Up or Down arrow keys to edit a parameter value. INDICATOR LEDS PROGRAM LOAD RUN Up and Down arrow keys. In Program mode, use to scroll parameter numbers or change a parameter value. In Load mode, use to select a menu option. In Display mode, use to scroll through display parameters. REVERSE AB ALLEN-BRADLEY PROGRAM LOAD ESC RUN REVERSE Numeric keys.
AC Drive Diagnostics/Parameter Viewing Selecting a Parameter There are two methods for selecting and viewing Display and Program Group parameters: scrolling through the parameters or entering the parameter number with the numeric keypad. 4. Enter the desired two-digit parameter number using the numeric keys. The display shows the parameter number entered. For example: >17. Output Current P-03: 0.00 >17 Scroll Parameter List 1. Connect CopyCat Keypad to A-B 160 Series C Drive.
AC Drive Diagnostics/Parameter Viewing A-B 1305/1336 Human Interface Module (HIM or Parameter Unit) 3. Slide blank panel cover toward base of drive and remove it. Place top edge of HIM approximately 1/2 inch from top edge of the cover. Push inward on bottom of HIM and slide HIM up (toward the top of the drive) into position.
AC Drive Diagnostics/Parameter Viewing Human Interface Module (HIM) Operation When power is first applied to the drive, the HIM will cycle through a series of displays. The displays will show drive name, HIM ID number, and communications status. Upon completion, the Status Display will be displayed. If a fault condition exists, it will appear on the display. External HIM Cable Connection Retaining Lever Sto +0 ppe .
AC Drive Diagnostics/Parameter Viewing HIM – Key Explanation ESC Escape key. Use to return to last or original position. SEL Select key. Use to move cursor position. Up arrow key. Scroll up. Down arrow key. Scroll down. The structure charts on the following pages illustrate how to navigate between the levels to obtain information necessary for troubleshooting for earlier and later HIM versions.
AC Drive Diagnostics/Parameter Viewing HIM Structure Chart – Series A 3.00, Series B 1.
AC Drive Diagnostics/Parameter Viewing HIM Structure Chart – Earlier Versions OPERATOR LEVEL Power-Up Mode & Status Display ESC SEL MODE LEVEL "Choose Mode" Display Process Program EEProm Password MAIN FILE Metering Setup Advanced Setup Faults Frequency Set Feature Select Diagnostics Ratings (1336 only) Adapter I/O Process Display Output Config Masks Owners Encoder Feedback (1336 only) Linear List PARAMETER LEVEL Output Current Output Voltage Output Power DC Bus Voltage Output Freq
AC Drive Diagnostics/Parameter Viewing NOTE: The following programming instructions include information for two versions of HIMs (Human Interface Modules or parameter units). Refer to the nameplate information on the back of HIM to determine which programming information to use. Displaying Metering Information 1. Install the HIM on the A-B drive. 2. Turn on machine power. 3. After three to five seconds of initialization, display will show the status display.
AC Drive Diagnostics/Parameter Viewing Displaying Fault Buffers 1. Install the HIM on the A-B drive. 2. Turn on machine power. 3. After three to five seconds of initialization, display will show the status display. If drive is in a faulted condition, fault will appear in display; otherwise, drive will read current status. Refer to examples below. Faulted Drive Fault Description Fault Number Normal Condition to choose Group Level.
AC Drive Diagnostics/Parameter Viewing Displaying Linear List of Parameters 1. Install the HIM on the A-B drive. 2. Turn on machine power. 3. After three to five seconds of initialization, display will show the status display. If drive is in a faulted condition, fault will appear in display; otherwise, drive will read current status. Refer to examples below. Faulted Drive Fault Description Fault Number Normal Condition 6. Press the Enter key Display will read: to choose Group Level.
AC Drive Diagnostics/Parameter Viewing PowerFlex Human Interface Module (HIM or Parameter Unit) The PowerFlex series AC drives have an integral keypad that can be used for viewing and editing parameter values. No external parameter unit is required, however an external hand-held parameter unit is available (22-HIM-A3) that can provide a userfriendly method of viewing and editing parameter values in hard-to-access locations.
AC Drive Diagnostics/Parameter Viewing PowerFlex 400 Alphanumeric LED Display Groups Menu Description Menu Description b Basic Display A Advanced Program C Communications T Terminal Block d Advanced Display R Aux Relay Card P Basic Program Table 28 F232120 © Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT 53
AC Drive Diagnostics/Parameter Viewing 2 3 1 RUN VOLTS FWD AMPS REV HERTZ PROGRAM 4 FAULT 5 8 6 7 POWERFLEX KEYPAD BUTTONS PHM640 Number 1 2 3 4 5 6 7 8 Name Escape Select Up Arrow Down Arrow Enter Stop Reverse Start Potentiometer Description Back one step in programming menu. Cancel a change to a parameter value and exit Program Mode. Advance one step in programming menu. Select a digit when viewing parameter value. Scroll through groups and parameters.
AC Drive Diagnostics/Parameter Viewing Viewing and Editing Parameters The last user-selected Display Group parameter is saved when power is removed and is displayed by default when power is reapplied. Step The following is an example of basic integral keypad and display functions. This example provides basic navigation instructions and illustrates how to program the first Program Group parameter.
Fault Display and Troubleshooting Information Fault Display and Troubleshooting Information This section provides information to guide users in understanding drive fault conditions and general troubleshooting procedures for Allen-Bradley drives. Included is a listing and description of the various drive faults with possible solutions, when applicable. For any questions regarding fault conditions, consult with the factory.
Fault Display and Troubleshooting Information A-B 1305/A-B 1336 The fault parameters are identified as follows: When the A-B 1305 and A-B 1336 drives encounter a fault, an LED is illuminated. Refer to Figure 37 and 33, respectively. These LEDs are viewed with the front cover removed. To view the specific fault description, the HIM (parameter unit) must be installed. Refer to HIM installation and operation.
Fault Display and Troubleshooting Information Clearing Faults When a fault occurs, the cause must be corrected before the fault can be cleared. Resetting a fault will not correct the cause of the fault condition. After corrective action has been taken, simply cycling power to the drive will clear the fault.
Fault Display and Troubleshooting Information PowerFlex Series Drives When a fault occurs, the fault indicator light on the integral keypad will illuminate. The fault code will immediately be indicated on the display, such as “F005”. The last three fault codes are also stored in the fault buffer located in parameter “d007”, “d008” and “d009”, with the most recent fault code stored in “d007” and the oldest fault code stored in “d009”. Repetitive faults of the same fault code will only be recorded once.
Fault Display and Troubleshooting Information Allen-Bradley Drive Fault Codes Allen-Bradley Drive Fault Codes PowerFlex Series Bulletin 160 Bulletin 1305 Bulletin 1336 Fault 02 Motor Temp Fault Description The motor thermal switch path is open. Corrective Action/ Remarks Motor temperature high. Check for: ambient air, cooling fan blockage or operation, break in switch wire path (not on all machines). 003 03 03 03 Power Loss Fault DC Bus voltage remains below 85% nominal for longer than 0.
Fault Display and Troubleshooting Information Table 30 (continued) Allen-Bradley Drive fault Codes Corrective Action Remarks PowerFlex Series Bulletin 160 Bulletin 1305 Bulletin 1336 039 39 39 39 Phase V Fault Phase to ground fault detected between controller and motor in Phase V. Check wiring between the drive and motor. Check for grounded phase. 040 40 40 40 Phase W Fault Phase to ground fault detected between controller and motor in Phase W. Check wiring between the drive and motor.
Fault Display and Troubleshooting Information Troubleshooting Suggestions Problem: Important Considerations Wash basket not accelerating properly. ❥ ❥ ❥ Drive cooling is extremely important to the overall service life of the product. Extreme care should be used to keep cooling air paths clean. Drive cabinet enclosures have been designed to optimize cooling. Keep cabinet doors closed and panels installed to maintain proper operation.
