Vertiv NetSure C24/48-1500 User manual

NetSure™
DC/DC Converter Module
User Manual (UM1C24481500 / 11WA6101WB), Revision G
Specification Number: 1C24481500
Model Number: C24/48-1500

Vertiv |NetSure DC/DC Converter Module User Manual (UM1C24481500 / 11WA6101WB)|Rev. G
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The information contained in this document is subject to change without
notice and may not be suitable for all applications. While every precaution
has been taken to ensure the accuracy and completeness of this
document, Vertiv Group Corporation assumes no responsibility and
disclaims all liability for damages resulting from use of this information or
for any errors or omissions. Refer to other local practices or building codes
as applicable for the correct methods, tools, and materials to be used in
performing procedures not specifically described in this document.
This document may contain confidential and/or proprietary information of
Vertiv Group Corporation, and its receipt or possession does not convey
any right to reproduce, disclose its contents, or to manufacture or sell
anything that it may describe. Reproduction, disclosure, or use without
specific authorization from Vertiv Group Corporation is strictly prohibited.
Vertiv and the Vertiv logo are trademarks or registered trademarks of
Vertiv Group Corporation. NetPerform™, NetReach™, NetSure™ and
NetXtend™ are trademarks of Vertiv Energy Systems, Inc. All other
trademarks are the property of their respective owners.
© 2017 Vertiv Energy Systems, Inc. All rights reserved.

Vertiv |NetSure DC/DC Converter Module User Manual (UM1C24481500 / 11WA6101WB)|Rev. G
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TABLE OF CONTENTS
Admonishments Used in this Document............................................................4
Important Safety Instructions ..............................................................................5
General Safety ...........................................................................................................................................................5
Voltages...........................................................................................................................................................................5
DC Input Voltages........................................................................................................................................................ 5
DC Output and Battery Voltages ..................................................................................................................5
Hazardous Voltage...............................................................................................................................................5
Handling Equipment Containing Static Sensitive Components..............................5
Static Warning...........................................................................................................6
Introduction ...............................................................................................................7
Overview..........................................................................................................................................................................7
Specifications .............................................................................................................................................................7
DC Output Ratings ...................................................................................................................................................... 7
DC Input Ratings ........................................................................................................................................................... 7
Environmental Ratings ............................................................................................................................................8
Compliance Information.........................................................................................................................................9
Standard Features .......................................................................................................................................................9
Mechanical Specifications...................................................................................................................................11
Operation.................................................................................................................. 12
Local Indicators..................................................................................................................................................... 12
Converter High Voltage Shutdown and Lockout Restart........................................... 12
Installing Converter Modules...................................................................................................................13
Troubleshooting and Repair................................................................................14
Troubleshooting ...................................................................................................................................................14
Converter Module Current Sharing Imbalanced......................................................................... 14
Converter Module Fault Symptoms and Troubleshooting................................................ 14
Replacement Procedures............................................................................................................................16
Converter Module Replacement................................................................................................................. 16
Converter Module Fan Replacement...................................................................................................... 16

Vertiv |NetSure DC/DC Converter Module User Manual (UM1C24481500 / 11WA6101WB)|Rev. G
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ADMONISHMENTS USED IN THIS DOCUMENT
DANGER
! Warns of a hazard the reader will be exposed to that will likely result
in death or serious injury if not avoided. (ANSI, OSHA)
WARNING
! Warns of a potential hazard the reader may be exposed to that could
result in
death or serious injury if not avoided. This admonition is not used for situations that pose a
risk o
nly to equipment, software, data, or service. (ANSI)
CAUTION
! Warns of a potential hazard the reader may be exposed to that could
result in minor or moderate injury if not avoided. (ANSI, OSHA) This admonition is not
used for situations that pose a risk only to equipment, data, or service, even if such use
appears to be permitted in some of the applicable standards. (OSHA)
ALERT
! Alerts the reader to an action that must be avoided in order to protect
equipment, software, data, or service. (ISO)
ALERT
! Alerts the reader to an action that must be performed in order to prevent
equipment damage, software corruption, data loss, o
r service interruption. (ISO)
FIRE SAFETY
! Informs the reader of fire safety information, reminders, precautions,
or policies, or of the locations of fire
-fighting and fire-safety equipment. (ISO)
SAFETY
! Informs the reader of general safety information, reminders, precautions, or
policies not related to a particular source of hazard or to fire safety. (ISO, ANSI, OSHA)

Vertiv |NetSure DC/DC Converter Module User Manual (UM1C24481500 / 11WA6101WB)|Rev. G
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IMPORTANT SAFETY INSTRUCTIONS
General Safety
DANGER! YOU MUST FOLLOW APPROVED SAFETY PROCEDURES.
Performing the following procedures may expose you to hazards. These procedures should be
performed by qualified technicians familiar with the hazards associated with this type of equipment.
These hazards may include shock, energy, and/or burns. To avoid these hazards:
a) The tasks should be performed in the order indicated.
b) Remove watches, rings, and other metal objects.
c) Prior to contacting any uninsulated surface or termination, use a voltmeter to verify that no voltage
or the expected voltage is present. Check for voltage with both AC and DC voltmeters prior to
making contact.
d) Wear eye protection.
e) Use certified and well maintained insulated tools. Use double insulated tools appropriately rated for
the work to be performed.
Voltages
DC Input Voltages
DANGER! This system operates from DC input voltage. Although the DC voltage is not hazardously
high, the input power can deliver large amounts of current.
DC Output and Battery Voltages
DANGER! This system produces DC power and may have a battery source connected to it. Although
the DC voltage is not hazardously high, the converters and/or battery can deliver large amounts of
current. Exercise extreme caution not to inadvertently contact or have any tool inadvertently contact an
output terminal or battery terminal or exposed wire connected to an output terminal or battery terminal.
NEVER allow a metal object, such as a tool, to contact more than one termination or battery terminal at a
time, or to simultaneously contact a termination or battery terminal and a grounded object. Even a
momentary short circuit can cause sparking, explosion, and injury.
Hazardous Voltage
DANGER! HAZARD OF ELECTRICAL SHOCK.
More than one disconnect may be required to de-energize the system before servicing.
Handling Equipment Containing Static Sensitive Components
ALERT! Installation or removal of equipment containing static sensitive components requires careful
handling. Before handling any equipment containing static sensitive components, read and follow the
instructions contained on the Static Warning Page.

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STATIC WARNING
This equipment contains static sensitive components. The warnings listed below must be observed to
prevent damage to these components. Disregarding any of these warnings may result in personal injury
or damage to the equipment.
1. Strictly adhere to the procedures provided in this document.
2. Before touching any equipment containing static sensitive components, discharge all static
electricity from yourself by wearing a wrist strap grounded through a one megohm resistor. Some
wrist straps have a built-in one megohm resistor; no external resistor is necessary. Read and follow
wrist strap manufacturer’s instructions outlining use of a specific wrist strap.
3. Do not touch traces or components on equipment containing static sensitive components. Handle
equipment containing static sensitive components only by the edges that do not have connector
pads.
4. After removing equipment containing static sensitive components, place the equipment only on
conductive or anti-static material such as conductive foam, conductive plastic, or aluminum foil. Do
not use ordinary Styrofoam™or ordinary plastic.
5. Store and ship equipment containing static sensitive components only in static shielding containers.
6. If necessary to repair equipment containing static sensitive components, wear an appropriately
grounded wrist strap, work on a conductive surface, use a grounded soldering iron, and use
grounded test equipment.

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INTRODUCTION
Overview
The C24/48-1500 is a compact DC/DC converter module which offers efficient power conversion. It operates
from a nominal +24 VDC source to provide nominal -48 VDC load power.
Specifications
DC Output Ratings
•Voltage: Nominal –48 volts DC, positive ground. Output voltage is adjustable from 48.0 to 55.5 volts DC
via the associated controller.
•Nameplate Rating:
a) 48 - 52 Vdc, 31.25 - 28.9 A, 1500W max. @ 50°C.
b) 48 - 52 Vdc, 25 - 23 A, 1200W max. @ 65°C.
•Regulation:
a) Static: Steady state output voltage remains within ±1% of the pre-adjusted voltage for any load
current from no load to full load and over the specified input voltage range.
b) Dynamic: For any load step change within the range of 20% to 100% of full rated current, the
maximum voltage transient will not exceed 5% of the initial steady state voltage.
•Filtering: With at least 10% of rated full load on the output (-20°C to +65°C).
a) Voice band noise is less than 32 dBrnC (for more than one converter module) or 40 dBrnC (for a
single converter module) when measured with a noise meter using 600 ohm bridged input and
C-message weighting.
b) Wide band noise does not exceed 250 millivolts peak to peak over the frequency range of 0 Hz to
100 MHz.
c) Wide band noise does not exceed 50 millivolts rms over the frequency range of 0 Hz to 100 MHz (as
measured with an HP3400A true rms voltmeter).
d) Noise below –20°C is slightly higher.
DC Input Ratings
•Voltage: Nominal 24 volts DC.
•Nameplate Rating: 20.5 - 30 VDC, 87 - 59 A.
•Inrush Current: The peak value of the inrush current does not exceed 2 times the maximum steady-
state RMS input current at 25°C and does not trigger the unit’s internal input fault protection device.
•Filtering: Noise reflected back to the central office battery is within the parameters set forth in Telcordia
Technical Reference TR-TSY-000009, paragraph 5.0, using test measurements in Telcordia Technical
Reference PUB 43802, pages 5 and 6.

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•Typical Input Data: When equipped with one DC-DC converter module.
a) The output voltage of the DC-DC converter module is initially adjusted to 48 volts at 50% load and
24 volts DC input.
b) Maximum Current: Input current is 83.32 amperes at full load (31.25 amperes) and 21 volts DC input.
Table 1: Typical Input Data
Input Voltage Percent
of Full Load
Input Current
(Amps)
Efficiency
(%)
Typical Heat
Dissipation
(BTU/Hr)
21 VDC
0
0.56
--
40.13
25
19.56
91.2
123.34
50
39.16
91.2
246.93
75
59.76
89.6
445.33
100
83.32
85.7
853.74
24 VDC
0
0.52
--
42.58
25
17.28
90.4
135.85
50
34.40
90.8
270.43
75
52.52
89.3
460.19
100
72.84
85.8
847.02
28 VDC
0
0.48
--
45.86
25
15.04
89.0
158.06
50
29.64
90.4
271.85
75
45.28
88.7
488.84
100
62.24
86.1
826.54
Environmental Ratings
•Specification Compliant Temperature Range: -20°C to +65°C (-4°F to +149°F).
•Reduced Load Temperature Range: +50°C to +80°C (+122°F to +176°F).
•Deviation to Noise Specs. Temperature Range: -40°C to -20°C (-40°F to -4°F).
•Storage Ambient Temperature Range: -40°C to +85°C (-40°F to +185°F).
•Humidity: This converter module is capable of operating in an ambient relative humidity range of 0 to
95%, non-condensing.
•Altitude: The maximum operating ambient temperature should be derated by 10°C at an elevation of
10,000 feet. For elevations between sea level and 10,000 feet, derate the maximum operating ambient
temperature linearly.
•Ventilation Requirements: The converter module is fan cooled and utilizes front to back forced
ventilation.
•Audible Noise: With four converter modules installed and operating, the audible noise at any point 5 feet
from any vertical surface of the Module Mounting Shelf does not exceed 68 dBA when measured with a
sound level meter conforming to ANSI S1.4.

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•EMI/RFI Suppression: Converter modules operating in an approved Module Mounting Shelf conform to
the requirements of FCC rules Part 15, Subpart B, Class B for Radiated and Conducted emissions limits.
Compliance Information
•Safety Compliance: This unit meets the requirements of UL 1950, Standard for Information Technology
Equipment, and is UL Recognized as a power supply for use in Telephone, Electronic Data Processing or
Information Processing Equipment. This unit meets the requirements of CSA 22.2, No. 950 and is tested
and Certified by UL ("c UR") as a Component Type Power Supply.
•The converter module is RoHS 5/6 compliant.
•NEBS Compliance (when used in a compliant system): Compliance verified by a Nationally Recognized
Testing Laboratory (NRTL) per GR-1089-CORE and GR-63-CORE. Contact Vertiv for NEBS compliance
reports.
Standard Features
•Type of Power Conversion Circuit: High Frequency.
•Input Protection:
a) Fusing: A 100-ampere non-user replaceable fuse is located in the positive input lead of each DC-DC
converter module.
b) Low Input Voltage Inhibit: Operation of each DC-DC converter module will inhibit if the input voltage
drops to within the range of 19.25 to 20.5 volts. While operation is inhibited, each DC-DC converter
modules will draw no more than 15mA. Operation will automatically resume after the input voltage
returns to within normal operating limits.
•Output Protection:
a) Overvoltage Protection: If output voltage exceeds an adjustable preset value (set via controller) and
the converter module is delivering more than 10% of its rated current, the converter module shuts
down.
After approximately 3 seconds, the converter module automatically restarts. If output voltage again
exceeds the high voltage shutdown value within 5 minutes, the converter module shuts down and
locks out. Manual restart is then required. If the converter module does not experience a high
voltage condition within the 5-minute time-period, the restart circuit is reset.
If two or more converter modules are installed in a shelf, or if the shelf is paralleled with other
Module Mounting Shelves, only the converter module causing the high voltage condition shuts
down.
Adjustable from 49.0 to 60.0 volts DC via the controller.
NOTE! When the converter module is not used with a controller, the default high voltage shutdown
point is 59.5Vdc ±0.5Vdc.
b) Overcurrent Protection: When the output current of a DC-DC converter module increases to a
preset overcurrent value between 102.5% and 115% of rated full load, the output voltage of the
module will automatically decrease to limit current to this value. The output will recover to within
specified limits when the overload condition is removed. Adjustable from 13.5A to 31.3A via the
controller.

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NOTE! When the converter module is not used with a controller, the default overcurrent point is 102.5%
to 115% of rated full load.
c) Power Limit: Output power is limited to 1500W.
d) Over Temperature Protection: The operation of a DC-DC converter module will automatically shut
down if the internal temperature of the module exceeds a predetermined value. Operation will
automatically resume after the over-temperature condition is corrected.
•Series Paralleling Output FET: A series paralleling output FET is provided in each DC-DC converter
module. This allows the Modules to be paralleled for redundancy.
•Hot Swappable:The converter module is designed to be plug-and-play. The converter module can be
inserted or removed from a live DC power system with no damage. When the converter module is
plugged into the system, the sub-system output voltage will not be affected.
•Cooling: Each converter module contains two fans for forced convection cooling.
a) Fan Fault Protection: The converter module shuts down and locks out and its fault indicator (red)
flashes if either fan fails. Fan failure is detected and reported to controller. The fans are field
replaceable.
b) Fan Control:Fan speed is continuously variable. When input voltage is within normal range, the
built-in processor adjusts fan speed according to the converter module’s output power. For
example, a higher output power increases the fan speed. Fan speed control can be disabled by the
controller.
•Communication Failure:The protection indicator (yellow) will flash should communication between the
converter module and associated system controller fail. The failure information will be reported to the
associated system controller and the controller will process the failure accordingly. During a
communication failure, the converter module output voltage will automatically adjust to 48.00Vdc. The
converter module will revert to normal operation once normal communication is restored.
•Monitoring Function:The converter module has a built-in advanced DSP (Digital Signal Processor) that
monitors and controls the operation of the converter module. The DSP also communicates with the
associated system controller in real time through the CAN bus. The following table lists the different
commands and information exchanged between the converter module and the controller.
•External Alarm Circuits: Provided via the associated controller. Refer to the separate Power System
documentation for a description of available external alarms.

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Table 2: Monitoring Function
Commands / signals that can be
received by the Converter Module
from the Controller.
Information gathered by the
Controller from the Converter
Module.
•Turn On/Off
•Voltage Walk-in On/Off
•HVSD Reset
•Current Limit Adjustment
•Voltage Adjustment
•Fan Speed Control Enable/Disable
•HVSD Threshold
•Output Voltage
•Output Current
•Current Limit Setting
•Temperature
•Over Voltage Setting
•On/Off Status
•Fault Alarms, such as:
HVSD,
Fan Fail,
EEPROM Failure
•Protection Alarms, such as:
Input Voltage Protection,
High Temperature Protection
•Thermal Derating
•Address
•Code
•Date
•Software Version
•Hardware Version
Mechanical Specifications
•Weight: 5.5 lbs.
•Dimensions (H x W x D): 1.63” (41.4mm) x 4.88” (124mm) x 14.96” (380mm).
•Local Controls: None.
•Local Status and Alarm Indicators:
a) Power (Green)
b) Protection (Yellow)
c) Alarm (Red)

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OPERATION
Local Indicators
Location and Identification: Refer to Figure 1.
Description: There are three (3) indicators located on the converter module’s front panel. The functions of
these indicators are as shown in Table 3.
NOTE! DC voltage must be present at the converter module input terminals, (from battery or an
operating Rectifier) for local indicators to illuminate.
Converter High Voltage Shutdown and Lockout Restart
Remove the converter, wait 30 seconds or more (until the LEDs on the converter extinguish), then re-insert the
converter.
The converter may also be restarted from the controller. Refer to the controller’s documentation.
Figure 1: Local Indicator Locations
Table 3: DC-DC Converter Module Indicators
Indicator Normal State Alarm State Alarm Cause
Power
(Green) On
Off No input voltage.
Internal input fuse open.
Flashing
The converter is being identified by the
controller.
Protection
(Yellow) Off
On
DC input under/over voltage.
Moderate load sharing imbalance.
Converter not inserted into the slot
completely.
Converter over-temperature protection.
Converter in ECO Standby Mode when ECO
Mode is active in controller.
Flashing
Loss of communication with the controller
(the converter can provide power).
Alarm
(Red) Off
On
Severe load sharing imbalance.
Converter output disabled for any reason,
including overvoltage shutdown.
Flashing One or both fans not operating (converter
shuts down).
DC-DC CONVERTER MODULE
Protection Indicator
(Yellow)
Alarm Indicator
(Red)
Power Indicator
(Green)

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Installing Converter Modules
The converter module is hot swappable. It can be installed with the system operating.
WARNING! To prevent damage to the latching mechanism, ensure the handle is in the open position
when installing or removing a converter module. NEVER hold the handle in the closed position when
installing a converter module into a shelf.
Procedure
1. Place the module into an unoccupied mounting slot without sliding it in completely.
2. Loosen the captive screw on the module handle. Pull the handle to pivot it out of the module front panel
(this will also retract the latch mechanism located at the right side of the module). Refer to Figure 2 for
latch mechanism illustration.
3. Push the converter module completely into the shelf.
4. Push the handle into the front panel of the module. Tighten the captive screw on the handle. This will
lock the module securely to the shelf.
5. Repeat the above steps for each converter module being installed in the system.
6. After the converter modules are physically installed in the mounting shelf(s), they are ready for
operation immediately after power is supplied to them.
7. Certain functions (i.e. converter current limit, converter addressing) may require adjustment when
adding or replacing a converter module. Refer to the Power System documentation for instructions.
Figure 2: Converter Module Handle/Latch Mechanism
Screw
Note: Handle must be
open when installing
or removing module.
Handle in
Closed Position

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TROUBLESHOOTING AND REPAIR
Troubleshooting
Converter Module Current Sharing Imbalanced
When multiple converter modules are operating in parallel and the current sharing imbalance among them is
greater than 5%, check if the converter module is properly seated in the shelf.
If the current sharing imbalance still persists following the verification suggested above, replace the converter
module exhibiting the current imbalance.
Converter Module Fault Symptoms and Troubleshooting
The fault indicators that can be displayed by the converter module are as follows. Refer to Table 4for a list of
possible causes and corrective actions.
•Power Indicator (Green) OFF
•Protection Indicator (Yellow) ON
•Protection Indicator (Yellow) Flashing
•Alarm Indicator (Red) ON
•Alarm Indicator (Red) Flashing

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Table 4: Converter Module Troubleshooting
Symptom Possible Cause(s) Suggested Action(s)
Power
Indicator
(Green) Off
No input voltage. Make sure there is input voltage.
Internal input fuse
open. Replace the converter.
Protection
Indicator
(Yellow) On
DC input under/over
voltage.
Correct the DC input voltage to within the
acceptable range.
Moderate load sharing
imbalance.
Check if the converter is properly seated in
the module mounting assembly. If this does
not correct the fault, replace the converter.
Converter not
inserted into the slot
completely.
Remove and properly insert the converter.
Converter over-
temperature
protection.
Fan rotor blocked: remove any object that
may be blocking the fan.
Ventilation blocked (inlet or outlet): remove
any object that may be blocking the inlet or
outlet.
Ambient temperature too high or rectifier inlet
too close to a heat source: lower the ambient
temperature or relocate the heat source.
Converter in ECO
Standby Mode when
ECO Mode is active in
controller.
--
Protection
Indicator
(Yellow)
Flashing
Loss of
communication with
controller (the
converter can provide
power).
Check the communication cables.
Remove and properly insert the converter.
Alarm
Indicator
(Red) On
Severe load sharing
imbalance.
Converter output
disabled for any
reason, including
overvoltage shutdown.
Remove the converter, wait 30 seconds or
more (until the LEDs on the converter
extinguish), then re-insert the converter.If
converter fails to start, shuts down again, or
load sharing imbalance persists; replace the
converter.
Alarm
Indicator
(Red) Flashing
One or both fans not
operating (converter
shuts down).
Replace the fan(s).

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Replacement Procedures
Converter Module Replacement
The converter module is hot swappable. It can be removed and installed with the system operating.
WARNING! To prevent damage to the latching mechanism, ensure the handle is in the open position
when installing or removing a converter module. NEVER hold the handle in the closed position when
installing a converter module into a shelf.
Procedure
1. Performing this procedure may activate external alarms. Do one of the following. If possible, disable
these alarms. If these alarms cannot be easily disabled, notify the appropriate personnel to disregard
any alarms associated with this system while this procedure is performed.
2. Loosen the captive screw that is located on the module handle. (Turn the fastener several turns
counterclockwise to loosen.) Pull the handle to pivot it out of the module front panel (this will also
retract the latch mechanism located at the right side of the module). Refer to Figure 2 for latch
mechanism illustration.
3. Grasp the handle and pull firmly to remove the module from the shelf.
4. Place the replacement converter module into the mounting position without sliding it in completely.
5. Loosen the captive screw on the module handle. Pull the handle to pivot it out of the module front panel
(this will also retract the latch mechanism located at the right side of the module). Refer to Figure 2 for
latch mechanism illustration.
6. Push the converter module completely into the shelf.
7. Push the handle into the front panel of the module. Tighten the captive screw on the handle. This will
lock the module securely to the shelf.
8. Certain functions (i.e. converter current limit, converter addressing) may require adjustment when
adding or replacing a converter module. Refer to the Power System documentation for instructions.
9. Enable the external alarms, or notify appropriate personnel that this procedure is finished.
10. Ensure that there are no local or remote alarms active on the system.
Converter Module Fan Replacement
Each converter module uses two fans for cooling. If fan replacement should become necessary, perform the
following procedure. It is recommended that both fans in the converter module be replaced at the same time.
Refer to Figure 3as this procedure is performed.
CAUTION! In a system with NO redundant converter module, battery must have sufficient reserve to
power the load(s) while the converter module is removed for fan replacement.
NOTE! When performing any step in this procedure that requires removal of existing hardware, retain all
hardware for use in subsequent steps.

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Procedure
1. Performing this procedure may activate external alarms. Do one of the following. If possible, disable
these alarms. If these alarms cannot be easily disabled, notify the appropriate personnel to disregard
any alarms associated with this system while this procedure is performed.
2. Remove the converter module from the shelf. Refer to the previous procedure for step-by-step
instructions.
3. Place the converter module on a static-safe work surface. Connect an approved grounding strap to your
wrist for the remainder of this procedure.
4. Remove the four (4) faceplate mounting screws shown in Figure 3 from the converter module. Remove
the faceplate.
5. For proper orientation of the new fan(s), observe the location of the fan wires and the air flow arrows on
the old fan(s).
6. Carefully pull the fan(s) out from the converter module, until the fan power cable(s) can be accessed.
7. Unplug the fan power cable(s) from connector(s) on the PC board, and remove the fan(s).
8. Plug the power cable(s) of the replacement fan(s) into the connector(s) on the PC board.
9. Place the new fan(s) in the space vacated by the old fan(s) (ensure the fan wires and air flow arrows
match the orientation of the old fan), and plug it into the converter module.
10. Replace the faceplate on the converter module. Note that each fan has four holes in the front corners
and that the faceplate has four tabs per fan. When replacing the faceplate, align the fan holes with the
faceplate tabs. Ensure that no fan wiring is pinched. Secure faceplate with the four (4) previously
removed screws.
11. Replace the converter module into the shelf. Refer to the previous procedure for step-by-step
instructions.
12. When the fans start, check to ensure that each is providing front-to-back airflow. If air direction is
wrong, immediately remove the converter module from the shelf. Repeat previous steps to check fan
orientation, and correct as necessary. Reinstall the converter module and again check for proper airflow.
13. Enable the external alarms, or notify appropriate personnel that this procedure is finished.
14. Ensure that there are no local or remote alarms active on the system.

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Figure 3: Converter Module Fan Replacement
Fan Power
Connectors
Fans
Faceplate Mounting
Screws (4)
Faceplate
Note: Verifiy arrows
on fan bodies point
toward rear of module.
Front View
Position fans so that
power cables exit fans here.
Align holes in fan with
tabs on faceplate.

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UM1C24481500 / 11WA6101WB (RG 08/17)