Will Burt Night Scan Chief Series User manual

Night Scan Chief
Operating Instructions
The Will-Burt Company
401 Collins Blvd
Orrville, OH 44667, USA
Phone: [phone]
E-Mail: cont[email protected]
Website: www.willburt.com
TP-4602001-T, December 2020
© 2020 The Will-Burt Company
Original Instructions
Authorized Representative:
GEROH GmbH & Co. KG
Fischergasse 25
D-91344 Waischenfeld, Germany

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Warranty
Will-Burt warrants its Night Scan Chief to be free from defects in material and workmanship for a
period of two (2) years, with such time period running from the date of shipment by Will-Burt. Will-
Burt shall not be responsible for any damage resulting to or caused by its products by reason of
failure to properly install, maintain or store the product; use of the product in a manner inconsis-
tent with its design; unauthorized service, alteration of products, neglect, abuse, accident, or acts
of God. This warranty does not extend to any component parts not manufactured by Will-Burt;
provided, however, Will-Burt’s warranty herein shall not limit any warranties by manufacturers of
component parts which extend to the buyer.
THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, AND NO REPRE-
SENTATIONS, GUARANTEES OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO, A WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE, OR NONINFRINGEMENT ARE MADE BY WILL-BURT IN CONNECTION WITH
THE MANUFACTURE OR SALE OF ITS PRODUCTS. NO EMPLOYEE, DISTRIBUTOR, OR
REPRESENTATIVE IS AUTHORIZED TO CHANGE THIS WARRANTY IN ANY WAY OR
GRANT ANY OTHER WARRANTY ON BEHALF OF WILL-BURT.
Claims for defects in material and workmanship shall be made in writing to Will-Burt within thirty
(30) days of the discovery of defect. Failure to provide notice as required hereby shall be conclu-
sive evidence that the product was in conformity with the warranty, and Will-Burt shall be
released from any and all liability relating to the product. Will-Burt may either send a service rep-
resentative or have the product returned to its factory at Buyer's expense for inspection. If judged
by Will-Burt to be defective in material or workmanship, the product will be replaced or repaired
at the option of Will-Burt, free from all charges except authorized transportation.
THE REMEDIES OF BUYER SET FORTH HEREIN ARE EXCLUSIVE AND ARE IN LIEU OF
ALL OTHER REMEDIES. THE LIABILITY OF WILL-BURT WHETHER IN CONTRACT, TORT,
UNDER ANY WARRANTY, OR OTHERWISE, SHALL NOT EXTEND BEYOND ITS OBLIGA-
TION TO REPAIR OR REPLACE, AT ITS OPTION, ANY PRODUCT OR PART FOUND BY
WILL-BURT TO BE DEFECTIVE IN MATERIAL OR WORKMANSHIP. WILL-BURT SHALL NOT
BE LIABLE FOR COST OF INSTALLATION AND/OR REMOVAL, OR BE RESPONSIBLE FOR
DIRECT, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE.

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Contents
1 Safety Summary................................................................................................... 5
1.1 Signal Word Definitions............................................................................................. 5
1.2 Safety Instructions .................................................................................................... 5
1.3 Symbols Used on Product Labels........................................................................... 10
2 Specification Compliance ................................................................................. 11
2.1 NFPA 1901-2016 .................................................................................................... 11
2.2 CE Declaration of Conformity ................................................................................. 11
3 Introduction........................................................................................................ 13
3.1 Introduction ............................................................................................................. 13
3.2 Intended Use........................................................................................................... 13
3.3 Mast Position Definition .......................................................................................... 14
3.4 Mast Component Descriptions................................................................................ 14
3.5 Remote Control Options ......................................................................................... 17
4 Technical Data.................................................................................................... 19
5 Installation.......................................................................................................... 21
5.1 Mounting Location Requirements ........................................................................... 21
5.2 Recommended Installation Tools............................................................................ 22
5.3 Unpacking & Handling ............................................................................................ 22
5.4 Attaching to Mounting Location............................................................................... 23
5.5 Installing Remote Control........................................................................................ 24
5.5.1 Wired Hand Held Remote Control (HHRC)................................................... 24
5.5.2 Panel Mount Remote Control (PMRC).......................................................... 26
5.5.3 Wireless Remote Control .............................................................................. 27
5.6 Electrical Installation ............................................................................................... 27
5.6.1 Wiring Remote Control Cable to the Base Board ......................................... 28
5.6.2 Wiring DC Source Power to the Mast Control Circuit ................................... 28
5.6.3 Wiring Source Power to the Light Circuits .................................................... 28
5.6.4 Wiring Vehicle Safety Interconnect Circuit.................................................... 30
5.6.5 Wiring Optional Enable Circuit ...................................................................... 31
5.6.6 Secure Wiring and Attach Cover................................................................... 31
5.7 Test the Installation................................................................................................. 32
6 Operation............................................................................................................ 33
6.1 Pre-Operation Check .............................................................................................. 33
6.2 Remote Control Functions ...................................................................................... 33
6.3 Quick Operation Summary...................................................................................... 33
6.4 Initiating (Power-Up) ............................................................................................... 34
6.5 Raising the Mast to 90°........................................................................................... 34
6.5.1 Using the Auto-Up Feature ........................................................................... 35
6.5.2 Using the Mast Up Button ............................................................................. 36
6.6 Extending the Mast ................................................................................................. 36
6.7 Controlling the Lights .............................................................................................. 36
6.8 Lowering the Mast................................................................................................... 36
6.9 Stowing the Mast .................................................................................................... 36
6.9.1 Using the Auto Stow® Feature ..................................................................... 37
6.9.2 Using the Mast Down Button ........................................................................ 37
6.9.3 Emergency Stow with Power ........................................................................ 38
6.9.4 Emergency Stow without Power ................................................................... 39

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7 Maintenance, Adjustments and Disposal ........................................................ 41
7.1 Power Isolating Procedure...................................................................................... 41
7.2 Cleaning and Lubricating the System ..................................................................... 41
7.3 Spare Parts ............................................................................................................. 42
7.4 Periodic Inspections................................................................................................ 42
7.5 Adjusting the 90° and Mast Stowed Limit Switches ................................................ 44
7.5.1 Diagnostic LEDs on the Base PC Board....................................................... 44
7.5.2 Adjusting the mast 90° Limit Switch.............................................................. 45
7.5.3 Adjusting the Mast Stowed Limit Switch ....................................................... 46
7.5.4 Adjusting the Mast Magnetic Down Switch ................................................... 47
7.6 Adjusting the RCP Home Position .......................................................................... 48
7.7 System Disposal ..................................................................................................... 50
8 Reference Information....................................................................................... 51
8.1 DIP Switch Definitions............................................................................................. 51
8.2 Strobe/Beacon Light ............................................................................................... 51
8.3 Nycoil® (Optional)................................................................................................... 52
8.4 Bulb Replacement................................................................................................... 52
8.5 The Will-Burt Company Mast Oil Safety Data Sheet .............................................. 59
9 Troubleshooting................................................................................................. 63
9.1 Troubleshooting Electrical....................................................................................... 63
9.2 Troubleshooting Mechanical Symptoms ................................................................. 71
9.3 Document History ................................................................................................... 73
10 Appendix........................................................................................................... 75
10.1 Model with Auxiliary Air Supply (No Compressor) ................................................ 75
10.1.1 Supply Air Requirements ........................................................................... 75
10.1.2 Installing Supply Air Connections ............................................................... 75
10.2 System Wiring Diagram ........................................................................................ 76

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1 Safety Summary
This section describes safety instructions for the Night Scan Chief that personnel must under-
stand and apply throughout all product activities such as transportation, handling, installation,
operation, maintenance, storage, disposal and troubleshooting. Read and understand this entire
document, and contact The Will-Burt Company with any questions, before performing any proce-
dure outlined in this document. Keep this document during the entire duration of use of the
device. Pass this document along to trained and qualified end users.
1.1 Signal Word Definitions
The following signal words and definitions are used to indicate hazardous situations:
DANGER indicates an imminently hazardous situation that, if not avoided, will result in death or
serious injury.
WARNING indicates a potentially hazardous situation that, if not avoided, could result in death or
serious injury.
CAUTION indicates a potentially hazardous situation that, if not avoided, may result in minor or
moderate injury or equipment damage. It is also used to alert against unsafe practices.
1.2 Safety Instructions
Electrocution Hazard! Contact with high voltage will result in death or serious injury. Observe
general safety precautions for handling equipment using high voltage. Do not locate or operate
mast near electrical lines, cables or other unwanted sources of electricity. Allow sufficient clear-
ance on all sides of mast to allow for side sway. Do not operate mast during an electrical storm.
Be certain electrical cables are undamaged and properly terminated. Do not touch live wires. Fol-
low OSHA or other national safety regulations when working near energized power lines. Per-
sonnel working with or near high voltages should be familiar with methods of resuscitation.
Disconnect Power for Service! Always disconnect all power sources following proper lock-out
tag-out procedures before performing service, repair or test operations. Remove the tethered
hand held control where applicable for added protection during maintenance.
Mast Tip Over Hazard! Mast tip over could result in death or serious injury. Before operation, be
certain mounting structure is capable of resisting forces generated from all loading and environ-
mental conditions, including, but not limited to, mast size and weight, payload and cable size and

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weight, payload sail area, wind speed, guy line arrangement, support bracket or roof line loca-
tion, and base plate assembly. Do not operate in wind speed conditions exceeding the maximum
rated wind speed. Do not operate on slopes exceeding the maximum deployment angle. Do not
install a payload that exceeds the maximum payload lifting capacity of mast. Do not install a pay-
load with the center of gravity offset from mast centerline exceeding the maximum allowed offset.
Stand clear of mast and mast payload during operation. Be certain mast is level and secure
before and during installation, operation, and maintenance.
Falling Objects from Mast Hazard! Wear a protective hard hat when working on mast or situ-
ated near mast operating area while mast is extending, retracting or deployed in any position
above the nested position. Improperly secured payload or mast components, ice formations, etc.
could be dislodged from mast and fall. Be sure the payload is properly installed and secured.
Relocation/Driving Hazard! Do not relocate the system during operation or while mast is
extended to any height above the nested position or powered up. Do not move vehicle until mast
has been securely nested and isolated from power. Power-up and operate mast only if the vehi-
cle is stationary and securely parked with the parking brake properly applied. Do not put mast in
service or operate without the vehicle interlock warning circuit or magnetic warning kit installed to
provide confirmation mast is nested prior to moving the vehicle. Contact The Will-Burt Company
Engineering for special on-the-move situations for military only use on specialized products.
Burst Hazard! For pneumatically operated masts, do not operate without the over-pressure
safety valve installed. Keep personnel clear of safety valve exhaust direction. Do not exceed the
maximum rated pressure of mast. If the mast air pressure is not fully discharged prior to remov-
ing air hoses, a rapid release of air pressure will occur requiring hearing and eye protection.
Payload Lifting Hazard - Intended Use! The mast is intended to lift a specific payload for light-
ing, surveillance or communication use only. Any other use without written consent is prohibited
and could cause death or serious injury. Do not use mast to lift personnel. Do not exceed speci-
fied payload capacity. Large payload wind sail areas can reduce payload capacity. Consult The
Will-Burt Company engineering.
Read Operating Instructions! Read and observe the operating instructions. Non-observance of
the instructions, operation which is not in accordance with use as prescribed in the instructions,
wrong installation or incorrect handling can seriously affect the safety of operators and machin-
ery. Adhere to the safety instructions when carrying out any activity relating to the Night Scan
Chief.
Trained Personnel Only! This product is intended for use by trained professionals only. It is not
intended for general use by the public or untrained personnel. Handling, installation, operation
and maintenance to be performed by trained and authorized personnel only. Only a properly
trained and qualified certified electrician should perform electric installations and service.

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Erratic Mast Operation Impact Hazard! The mast should operate smoothly during extension
and retraction. If erratic mast motion is observed during extension or retraction that results in
impact loading between the tube and the tube collar (mechanical travel stop), cease use of the
mast and contact The Will-Burt Company service department. Repeated operation with impact
loading can damage tubes and lead to mast separation.
Over-current Protection! Over-current protection or power switching by the installer on mast
incoming power supply as specified in this document should be a type suitable to allow lock-out
tag-out procedures for power disconnect.
Safety Instruction - Explosion! For outdoor use only. Do not use in explosive areas or areas
that have been classified as hazardous as defined in Article 500 of the National Electric Code or
equivalent national standards. Do not use in the presence of flammable gases or liquids such as
paint, gasoline or solvents. Do not use in areas of limited ventilation or where high ambient tem-
peratures are present.
Safety Equipment (PPE)! Proper personal protective equipment (PPE) like hard hats, gloves,
and safety shoes shall be properly worn while working on mast or near the deployment area of
mast. In addition, eye protection shall be worn during maintenance procedures. Follow national
PPE guidelines in your area of operation.
Pinch Point Hazard! Keep clear of all moving parts like mast collars nesting. Be sure to stay
clear of system during operation. Moving parts can crush and cut resulting in serious injury. The
mast shall be mounted out of reach of the operator during operation.
Crush Hazard - Mast Failure! Do not stand directly beneath mast or its payload. Be certain the
payload is properly installed and secured.
Entanglement Hazard! Tangled cables can cause equipment damage. Ensure payload cables,
Nycoil®, trip lines, guy lines or other cables are not tangled and are free to pay out as mast is
deployed. Cables that get tangled or snagged on mast or other objects can cause mast tubes to
lurch upward suddenly when the cable is freed. This can cause damage to mast and lead to mast
separation if repeatedly allowed to continue.
Health and Safety Hazard while Cleaning! Solvent used to clean parts is potentially danger-
ous. Avoid inhalation of fumes and prolonged contact to skin.
Fire Hazard Solvent! Cleaning solvent, used for maintenance, is flammable and can be explo-
sive. Do not smoke near solvent. Use cleaning solvent in a well-ventilated area. Keep cleaning

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solvent away from ignition sources. Always store cleaning solvent in the proper marked container
and in a proper location.
Bright Light Radiation Hazard! For systems equipped with scene lighting or look-up lights, do
not look directly into lights when they are illuminated. Temporary impairment or permanent vision
damage could occur.
Personnel Freezing/Burn Hazard! Make sure the lights are completely cool before attempting
to clean the lens, replace bulbs or perform maintenance. Wear gloves to protect from contact
with exposed metal that may be at extremes of hot and cold temperatures from sun or cold out-
door exposure.
Mast Extension Hazard - Obstruction! Extending mast into obstructions could result in death or
serious injury and could render mast inoperable and partially extended. Before applying power
and operating mast, be certain there is sufficient clearance above and to all sides of the expected
location of the fully extended mast and payload. Keep all persons clear of mast and mast exten-
sion. Do not lean directly over mast. Locate the operator station such that the operator has a
clear view of the operating space of mast and payload prior to deployment to avoid contact with
overhead objects.
Manual Retraction! For powered masts, make sure all power sources have been disconnected
from the system prior to manually lowering mast to avoid unexpected start-up motion and/or
damage to mast.
Mast Lifting/Handling! Use extreme caution while lifting mast System and when mast System is
suspended to avoid injury and equipment damage. Be certain mast is properly secured using at
least two sling points at the center of gravity label. All operators should be aware of and follow
the applicable local, regional, and national standards and codes of practice for slinging and trans-
porting equipment. Never lift Mast System over people. Ensure lifting equipment including, but
not limited to, lifting straps and hoist, are capable of handling the forces generated from lifting the
system. Observe manufacturer instructions on lifting equipment.
Remove Payload! For mast systems shipped with no payload (customer installed payloads),
remove payload before performing maintenance on mast system. The Will-Burt Company
installed devices can remain installed.
Equipment Damage - Submerged! Do not submerge mast in liquid or operate the vehicle in a
fording situation that would result in a submerged mast.
Safety Instruction - Potential Air Contaminants! If internally mounted in a vehicle, air from
mast and any accumulated water will discharge into the vehicle. Install appropriate drainage and
venting.

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Fastener Vibration Hazard! Mast system and payload mounting hardware must include proper
means to resist vibration loosening such as thread-locking compound, locking hardware, or
equivalent. Use specified assembly torques appropriate for the fastener size.
Frozen Water Hazard! Water freezing inside mast may render mast inoperable and cause major
equipment damage such as tube deformation. Ensure water is free to exit at the base of mast.
Safety Instruction - Guy Anchors! For masts using Guy Lines, verify the Guy Anchor point
strength is adequate to support the Guy Line forces.
Lubrication! Do not lubricate the exterior of mast moving tubes. The lubricant will attract dust
and other environmental contaminants into mast.
Equipment Damage - Forces! Before unloading the system, be certain the unloading region is
capable of resisting forces generated from unloading the system including but not limited to sys-
tem weight. Ensure the unloading region is level and has sufficient room and strength to hold the
system. If the unloading region is incapable of meeting the requirements of the system, damage
to the system and/or unloading region could occur.
Equipment Damage - Support Bracket! For masts using an upper support bracket, do not
over-tighten mast support bracket. Over-tightening may damage the Base Tube causing mast
tubes to stick.
Mast and Payload Access! The operator must provide safe means to access mast and payload
during installation, removal and maintenance.
Tripping Hazard! Cables, trip lines, guy lines and guy anchors can be hard to see during and
after installation. Any equipment posing trip hazards should be clearly marked.
Emergency Stow! Using the emergency stow button causes the actuator to lower mast without
regard to any faults, switches, or system interlocks. It is totally up to the operator to ensure safe
operation during an emergency stow attempt. When using the emergency stow button, normal
operation switches are disabled. The mast can be overdriven into saddle and cause damage to
the unit. Disengage the emergency stow button when the payload reaches the saddle and is
tight. Do not drive mast beyond this position.
Manual Tilt! If manually tilting mast, make sure all power has been disconnected from the sys-
tem prior to manually lowering mast to avoid unexpected motion and/or damaging mast compo-
nents.

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Safety Instruction - Motion on Power Interruption or Emergency Stop! Mast uses a normally
open air control valve. If power is lost or turned off or the emergency stop is activated while mast
is extended, mast will begin releasing air pressure and retracting at a controlled rate until power
is restored or mast fully retracts. Masts that fold down will not initiate any tilt motion.
1.3 Symbols Used on Product Labels
The following symbols are displayed on the product. The symbol meanings are as follows:
This symbol indicates an electrocution hazard or hazardous voltage hazard.
There is voltage present inside mast and control box. Do not operate mast
near electrical lines or during electrical storms. Contact with high voltage will
result in death or serious injury.
This symbol indicates a pinch point hazard. Keep fingers and hands clear of
moving parts.
This symbol indicates a tip-over hazard. The mast must be properly sup-
ported during transport, handling, installation, maintenance, operation and
decommissioning. System tip-over could result in death or serious injury.
This symbol indicates a general warning. In this unit, this symbol indicates a
frozen water hazard. Water must be permitted to exit mast to avoid ice dam-
age to mast.
This symbol is used to remind users to read and understand the operator's
manual before operating the mast system. Failure to follow operating instruc-
tions could result in death or serious injury. Read and understand operating
instructions before handling, installing, operating, or maintaining the mast
system.
This symbol indicates an electrical ground connection point.
This symbol is used to indicate the center of gravity (COG) of a fully nested
mast in a horizontal transport position.

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2 Specification Compliance
2.1 NFPA 1901-2016
The mast system is designed to be compliant with the following sections of National Fire Protec-
tion Agency NPFA-1901-2016 Edition:
22.14 Powered Operated Light Masts
23.13 Power Operated Masts
2.2 CE Declaration of Conformity
A copy of the EU Declaration of Conformity is as follows:

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EU Declaration of Conformity
The Will-Burt Company
401 Collins Blvd
Orrville, OH 44667, USA
hereby declares that the following product
Product designation: Telescoping Mast and Light Tower
Model Name: Night Scan Chief
Type name: Mobile lighting tower and mast
Serial number: All
Trade name: Night Scan Chief
Year of construction: 2021
fulfills all the relevant provisions of the legislation (in the following), including the changes which
applied at the time of the declaration. This declaration of conformity is issued under the sole
responsibility of the manufacturer.
The following directives have been applied:
Machinery Directive 2006/42/EC
Automotive EMC Directive 2004/104/EC
The following harmonised standards have been applied:
EN ISO 12100:2010 Safety of machinery - General principles for design - Risk assessment and
risk reduction (ISO 12100:2010)
EN 60204-1:2018 Safety of machinery - Electrical equipment of machines - Part 1: General
requirements (IEC 60204-1:2016, modified)
EN 50498:2010 Electromagnetic Compatibility (EMC) - Product family standard for aftermarket
electronic equipment in vehicles. The above product complies with the limit values set out in
points 6.5, 6.6, 6.8 and 6.9 of Annex I to Directive 2004/104/EC.
Place: 401 Collins Blvd, Orrville, OH 44667, USA
Date: December 18, 2020
________________(Signature on File)_________________
(Signature)
Name/Title: Tedd Carr / Director of Quality
The technical documentation is available from authorized representative:
Name: Harald Helk Technical Director GEROH GmbH & Co. KG
Address:Fischergasse 25, D-91344 Waischenfeld, Germany

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3 Introduction
3.1 Introduction
Thank you for selecting The Will-Burt Company for your critical payload elevation needs. These
operating instructions describe transporting, handling, installing, operating, maintaining, storing,
and troubleshooting procedures for Night Scan Chief. These procedures assume the use of stan-
dard mast systems. Procedures and characteristics for mast systems customized to meet cus-
tomer-specific needs may vary.
These operating instructions are intended for professionals who are qualified by their appropriate
training and experience to perform the procedures. Review this document in its entirety. Contact
The Will-Burt Company with any questions before performing any procedure outlined in this man-
ual.
The views depicted in this manual are provided for clarification and are subject to change without
notice. Views are not to scale.
The Night Scan Chief is available in 1.0 meter (3.25 feet), 1.8 meter (6 feet) and 2.3 meter (7.5
feet) heights and comes standard with a built-in air compressor. The mast tilts to vertical and
extends upward to provide directional scene lighting and surveillance. The mast retracts and
folds down for transport. The following models are covered in these operating instructions:
• Night Scan Chief 1.0 (this model only tilts - it does not extend telescopically)
• Night Scan Chief 1.8
• Night Scan Chief 2.3
The Night Scan Chief is available with many options installed by The Will-Burt Company such as
different light fixture types and manufactures, camera types and manufacturers, and optional
strobe lighting.
3.2 Intended Use
The Night Scan Chief is intended for use by professionals in the fire/rescue/first responder/secu-
rity industries to provide elevated and directional emergency scene lighting and surveillance or
communication capabilities. It is not intended for use by non-professionals. Do not use the mast
to lift personnel. The Night Scan Chief is intended to be installed on the roof or in a roof well of
fire/rescue/first responder vehicles with the vehicle interconnect safety circuit installed and oper-
ational.
The Night Scan Chief is intended to be used only when the vehicle is stationary and the vehicle
parking brake is properly applied. Do not supply input supply voltage or operate the mast system
when the vehicle is in motion. The mast shall remain in the powered-down, nested position
during vehicle motion.

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3.3 Mast Position Definition
An actuator electrically tilts the mast from the stowed position to the 90° position. The mast is
then pneumatically moved by air pressure to the extended position. The following positions (see
Figure 3-1) are used throughout this manual:
•Stowed: is the horizontal position in which the mast is firmly seated in the saddle. This posi-
tion is sometimes referred to as the nested position.
•90°: is the position that the mast electrically goes to from the stowed position. At 90°, the
mast has angled up, but no mast sections have risen. The mast remains retracted.
•Extended: is the partial or full raised position that the mast pneumatically goes after the 90°
position. In the extended position, some or all of the mast sections have risen.
Figure 3-1 Mast Positions
3.4 Mast Component Descriptions
Figure 3-3, and Figure 3-4 show major components of the Night Scan Chief system.
Mast: The mast consists of concentric tube sections that extend as air pressure is applied. The
mast contains a coiled cord in the center for power and data. Optionally, an external Nycoil® may
be included (not show) for camera or other accessory cables.
RCP: The remote control positioner (RCP) pans and tilts the lights. The RCP does not become
active until the mast tilts up to the 90° position. Standard Night Scan Chief models come
equipped with a single tilt RCP. This means the left and right lights tilt together to direct at a
desired position.

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Magnetic Down Switch: The magnetic down switch is activated by a magnet in the mast top
tube section. The position is factory set to indicate when the mast is fully retracted. Once acti-
vated, the mast is free to tilt back to the stowed position. See Section 7.5.4 for optional adjust-
ment.
Figure 3-2 Night Scan Chief Top View
Base Board: The PC Board (PCB) contains the system logical controller and provides landing
points for customer power supply and vehicle interlock cables. The PCB also distributes DC (and
optional AC light) power to components in the system.
Wiring Access Holes: Holes are provided in the bottom of the base to route power and data
cables into the mast system. The holes are protected by rubber grommets installed in the sheet
metal cutouts.
Look-Up Light: The Look-Up Light illuminates the operating space of the mast during any mast
motion to allow the operator to identify and avoid contacting unwanted obstructions during opera-
tion.
Saddle: The saddle supports the RCP and lights when nested for stable vehicle transit. The sad-
dle position will vary by model.
Lights: The Night Scan Chief systems can come with a variety of LED or Halogen lighting pack-
ages. Go to www.willburt.com for additional information on available light packages.
Camera/Strobe: Go to www.willburt.com for the latest optional cameras and strobe lights.
Optional
Camera or
Strobe
Location
Magnetic Down SwitchBaseMastLights
RCP: Remote Control Positioner

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Figure 3-3 Night Scan Chief Components (Left Cover Removed)
Figure 3-4 Night Scan Chief Components (Right Cover Removed)
90° Limit Switch: This limit switch activates when the mast reaches the 90° vertical position.
The mast is driven into a rubber pad under the mast. It is activated by a magnet located on the tilt
mechanism. The lights and RCP functions are disabled until this 90° limit switch is activated.
Once activated, the RCP and lights are active for use. The limit switch is adjustable and set at the
factory. See Section 7.5.2 for optional adjustment procedure.
Stowed Limit Switch: This limit switch activates when the mast reaches the horizontal stowed
position. After this switch activates, the controller drives the RCP into the saddle until a specified
current limit is achieved for 0.5 seconds. This drives the RCP into the saddle ensuring a tight fit
for vehicle transport. The stowed limit switch is activated by a magnet located on the tilt mecha-
nism. The switch location is adjustable and is factory set for a horizontal mounting surface. If the
Base Board
Look-Up Light
Wiring Access Holes
Electrical Ground Bar
Saddle
90° Limit Switch
Stowed Limit Switch
Tilt Actuator
Air Compressor (or Valve)
Safety Valve

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vehicle surface is not flat, this switch may need to be adjusted for proper stowing of the mast.
See Section 7.5.3 for optional adjustment procedure.
Tilt Actuator: This actuator tilts the mast.
Safety Valve: This valve prevents over-pressurization of the mast system.
Air Compressor: The air compressor provides the air pressure required to raise the mast.
Attached is a valve used for exhausting air. Optionally, the compressor is replaced by air valves
(not shown) when auxiliary air is provided by the vehicle. The mast does not have a switch indi-
cating the mast has reached its full extended height. When the mast is deployed, the operator
should release the extension button on the hand held control. If the operator keeps the button
pressed, the system will continue to build pressure until the safety valve blows off to relieve pres-
sure.
90° Limit Switch: This limit switch activates when the mast reaches the 90° vertical position.
The mast is driven into a rubber pad under the mast.
Stowed Limit Switch: This limit switch activates when the mast reaches the horizontal stowed
position. After this switch activates, the controller drives the RCP into the saddle until a specified
current limit is achieved. This drives the RCP into the saddle ensuring a tight fit for vehicle trans-
port.
Tilt Actuator: This actuator tilts the mast.
Safety Valve: This valve prevents over-pressurization of the mast system.
Air Compressor: The air compressor provides the air pressure required to raise the mast.
Attached is a valve used for exhausting air. Optionally, the compressor is replaced by air valves
(not shown) when auxiliary air is provided by the vehicle.
Labels: Extra warning labels are provided to attach near the operator control station.
3.5 Remote Control Options
There are three options for controlling the mast functions. Each option provides full system con-
trol. See Figure 3-5 for a picture of each option.
1. Wired Hand-Held Remote Control (HHRC): This option includes a 25 foot (7.6 meters)
quick connect coil cord and LED display.
2. Panel Mount Remote Control (PMRC): This option mounts to a panel and has LED display.
3. Wireless Hand-Held Remote Control (WHHRC). This option comes with a separate control
box that contains the transceiver. This control box is mounted separately from the mast. A
HHRC can be plugged into the wireless control box and used with the wireless control. Refer
to operating instructions TP-5543301 for installation and operation for the optional WHHRC.

PAGE 18 OF 80
NIGHT SCAN CHIEF
OPERATING INSTRUCTIONS
TP-4602001-T
DECEMBER 2020
Figure 3-5 Remote Control Options (not to scale)
The HHRC plugs into a bulkhead connector that can be located remotely on the vehicle at the
operator’s station. See Figure 3-6.
Figure 3-6 HHRC Bulkhead Connection
HHRC PMRC WHHRC