Tempest MVU-48 User manual

48” Mobile Ventilation Unit
Operation Manual
For Additional Information, contact
Tempest Technology Corporation
4708 N. Blythe Ave.
Fresno, CA 93722
Tel. [phone]
Fax. [phone]
Email [e-mail]
Internet www.tempest.us.com

TEMPEST MVU Operation Manual
Copyright 2004, Tempest Technology Corporation
2
Table of Contents
General Information ……………………………………………..………. 3
Warning Signs and Symbols …………………………………….……… 7
Safety Measures ………………………………………………….………10
48” MVU Specifications ……………………………………..…………. 15
MVU Misting System ……………………………………………...……. 18
Control Panel Features and Operation ………………………………. 19
Remote Control System ………………………………………..……… 24
Ventilator Bracket and Lowering System Operation ……..…………. 25
Starting and Stopping Instructions ……………………………..…….. 26
MVU Maintenance Schedule ……………………………………..…… 27
MVU Troubleshooting Guide ………………………………………….. 29
Spare Parts List ……………………………………….………………….31
Electrical Wiring Diagrams …………………………….………………. 32
Hydraulic System Diagrams …………………………….…………….. 39
Murphy Display and Diagnostic Module …………….……………….. 43

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
3
Manufacturer: Tempest Technology, Inc.
Technical Information: The information contained in this operation manual,
images, and data correspond to the product as of
the date it was written. The Tempest MVU is in a
continuous cycle of development and
improvement. We reserve the right to make any
changes or improvements that we consider to be
appropriate. Any obligation to earlier delivered
models shall not be connected herewith.
Copyright © 2005 by: Tempest Technology, Inc.
4708 N. Blythe Ave.
Fresno, CA 93722, USA
Contents: TD (Technical Documentation)
Formation: TD (Technical Documentation)
Duplication of these operating instructions by printing, photocopy, electronic data
exchange or any other procedure requires written permission from Tempest Technology,
Inc.
All rights reserved.
Printed in the United States of America

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
4
Operating Instructions
These operating instructions contain the descriptions for operation, maintenance
and replacement parts. Before you put the MVU into service, take the time to
thoroughly read this manual to familiarize yourself with it.
Diesel Engine Operation
Operation and maintenance of the diesel engine: see engine manufacturer’s
manual.

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
5
Standard Equipment
The operating instructions also contain descriptions of standard equipment and
non-standard equipment that do not belong to the normal product. For this reason,
the equipment that you receive can deviate partially from these descriptions and/or
images.
If your device should be equipped with different equipment that is not itemized or
described in these operating instructions, please notify Tempest Technology. You
will be informed by our technical staff about the correct operation and
maintenance.
Images
All images, as well as mass and technical data in these operating instructions, are
non-binding.
The operating instructions are an important component of your Mobile Ventilation
Unit. If the unit is re-sold, please pass these instructions along to the new owner.

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
6
General
Before starting the unit, read these
operating instructions carefully in order
to understand the correct operation and
maintenance of the Mobile Ventilation
Unit (MVU) and to avoid injury or
damage to the MVU.
The Mobile Ventilation Unit is
constructed with the latest state-of-the-
art technology and safety features.
Nevertheless, it can be dangerous for
the user if not operated properly.
The MVU may only be serviced by
personnel who have been properly
trained in the hydraulic and operating
systems maintenance.
Ongoing training with the MVU as well
as education through specialty training
will guarantee proper performance and
reliability.

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
7
Warning Signs
and Symbols
Warning Sign
Warnings
Intended to Mean
DANGER!
Injury Danger!
ATTENTION!
!I
Environmental
Protection!
Meaning
In the operating instructions, all safety
warnings are marked with this sign.
It means that injury potential exists.
Follow all security warnings as well as
the accident prevention instructions!
Meaning
Indicated to prevent personnel or
extensive property damages.
The place with the highest danger
warning marks!
Special statement to prevent property
damage and promote general cautious
measures.
Statement with respect to the economic
use of the device as well as additional
information in maintenance and
maintenance work.

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
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Emissions
Duration
Sound
Pressure
Level
Exhaust
Fumes
Carry operator ear protection with the
motor and ventilator!
The diesel engine which powers the
hydraulic system emits poisonous
exhaust fumes!
Exhaust fumes can cause severe health
damage!
Do not operate the ventilator in a closed,
unventilated room! Dangerous exposure
to carbon monoxide (CO) can result!

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
9
Handling
of Fuel
Protection
Arrangement
Use caution when handling fuel – fire
danger is increased!
Refuel the MVU only when the motor is
turned off; No smoking!
Do not refuel the MVU in a closed room;
The fumes are poisonous and explosive!
Always clean up spilled fuel!
Be especially careful of sparks, open
flame, large heat radiation, etc.!
Only operate the ventilator if all
protection devices are in place!
Before removing the protection devices,
disengage the motor and drives as well
as disconnect the ignition power!

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
10
Protective
Clothing
Ventilator
Operation
Safety
Measures
Maintenance
To protect from the dangers of fire
fighting operations, carry the usual
protective clothing and security
equipment of the fire department! For
hazardous materials or decontamination
incidents, wear appropriate safety
clothing.
When operating the ventilator, always
pay attention to maximum allowable
motor speed and ventilator RPM.
Observe the gauges for the oil and
temperature while operating the MVU.
Sufficiently illuminate and protect the
gauges and warning indicators!
Maintenance and service should only be
conducted by persons who are properly
trained and know the safety precautions
and accident-prevention procedures.
Disengage the motor and drives as well
as disconnect the ignition power!

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
11
Protective
Devices
Electrical
System
The dismantling of protection-devices
and security arrangements is required
during maintenance and service.
Directly after completion of the work, all
protective devices must be reinstalled
and security arrangements again tested
or be subject to withdrawal from service!
The MVU must be put through a regular
visibility and function test!
The MVU may not be operated in an
explosive environment!
Work on the electrical system may only
be performed by an electrician or by
trained personnel under the direction
and supervision of an electrician in
accordance with proper guidelines and
procedures!
When working on the electrical system,
disconnect the cable of the negative
terminal of the battery!
When connecting of the battery, – first
install the cable to the positive terminal,
and then the cable to the negative
terminal!
No metal objects should be placed on
the battery – this creates the danger of
a short circuit!
Use only original power rated batteries!
If too strong a battery is used, the
electrical system can be damaged!

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
12
Battery
Disposal
The electrical system of the MVU should
be tested regularly!
Problems, like a loose connection
and/or frayed cable must be repaired
immediately!
Follow the safety warnings on the
battery!
Explosion Danger!
In the load of the battery emerges a
highly explosive gas mixture!
Fire, spark, open light and smoke are
forbidden!
Avoid any spark sources when working
with the cable and electric devices!
Avoid short circuits!
Personnel Warning!
Battery acid is extremely corrosive,
therefore:
¨ Wear hand protection
¨ Wear eye protection
¨ Do not tilt the battery, acid can spill
out of the opening.
An unloaded battery can freeze,
therefore store it where it will not freeze!
Properly recycle old batteries in an
authorized recycling facility.

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
13
Spare parts
Environment
Protection
Measures
During maintenance and replacement of
parts, only original parts from Tempest
Technology, Inc. may be used!
The use of spare parts and accessories
that do not come from Tempest
Technology, Inc. or are not tested and
approved by Tempest, can adversely
affect the durability and performance
characteristics of the MVU and affect
operator safety!
Recycle oils, fuel, battery, and filters in
accordance with the legal and
environmental rules!
Never dispose of in water or rivers!
Store used fluids only in approved
containers!
Before throwing away a part or fluid,
note the correct disposal procedure
(recycling)!

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
14
Maintenance
Support and
Service
If problems occur during the
maintenance and service of the
ventilator, please contact:
Tempest Technology, Inc.
4708 N. Blythe Ave.
Fresno, CA 93722, USA
Tel: [phone]
Fax: [phone]

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
15
Truck Mounted MVU 48
Ventilator Manufacturer: Tempest Technology, Inc.
Type: 48“ Skid Mounted MVU with
Stellar Hook-Lift system.
Overall Specifications (MVU on Hook Skid Only)
Total Height: 105 inches
Total Width: 91 inches
Total Length: 175 inches
Total Weight: 10,950 pounds
Blower Assembly
Shroud Diameter: 48 inches
Shroud Material: Steel
Impeller: 7-blades, aluminum
Blower Performance
Volume of air: 80,000 CFM (130,000 Effective CFM)
380,000 CFM nominal open airflow
Velocity of air stream
at outlet: 70 MPH
Fan Adjustment
Scissors Lift: 118” max lift
Tilt up: 45°
Tilt down: 45°
Rotation: 360° continuous

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
16
Diesel Engine
Model: Cummins QSB5.9
Power: 130 hp @ 2,200 RPM
Fuel tank: 45 gallons
Operating Time: min. 8 hours
Hydraulic Control System
Tank Capacity: 40 gallons
Impeller Motor:
§ Variable delivery pump
§ 2,000 RPM
§ 50 gallons/minute @ 2,900 psi
Fan Tilt Up/Down:
• Internal gear pump
• 1,000 RPM
• 3 gallons/minute @ 2,900 psi
Yoke Raise/Lower Hydraulic cylinder to lift. Gravity return to
lower.
Fan Rotation: 24V Electric Motor
Control Systems (Electric and Electric over Hydraulic)
Fixed Panel with controls:
§ Engine/fan RPM
§ Gauges for temperature/oil pressure
§ Panel light
§ Engine hour meter
§ Emergency shut-down switch
§ Fan lift, tilt and rotation
§ Lowering System raise/lower
Remote Control:
§ Portable control box with 20 foot cable
§ Engine/fan RPM
§ Fan, start/stop
§ Tilt, up/down
§ Rotation, left/right
§ Scissors, up/down
§ Lowering system raise/lower
§ Emergency shut-down switch

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
17
Body Work
• Silencer hood mounted over diesel engine, hydraulic pump, reservoir, and
oil cooler with roll-up door for access to control panel.
• Service openings for engine.
Safety Features
• Emergency shut-down switch (entire system).
• Open grid steel fence running along both sides and end of the platform.
• Acoustic warning during lowering of fan unit.
Water Mist System
Misting Ring: 1.5” diameter stainless steel, 8 nozzles
Flow Rate: 87 gallons/minute @ 100 psi
Reach: 130 feet
Droplet Size: 200 microns
Supply: Central duct system
Coupling: 1.5” hose coupling with shut-off valve
Lowering System
Hydraulic lowering mechanism for the fan unit to reduce the overall height of the
unit by 7". Can reduce the height to legal limits for highway transportation when
unit is mounted on a truck with a tall platform.

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
18
MVU Misting System
• for knocking down suspended gases
• for cooling endangered structures
• for extinguishing fires
• for protection of advancing crews
• for decontamination of people and property
Misting Ring 1.5” Hose Coupling
A misting ring made from 1 1/2“ diameter stainless steel tubing is mounted forward
of the propeller inside the ventilator-shroud. A total of eight evenly spaced, 65
degree spray pattern nozzles on the ring provide a homogenous water fog.
The air stream generated by the ventilator is utilized to transport the water vapor.
At a flow rate of 74 gpm and a delivery pressure of 105 psi the reach of the stream
is over 100 feet.
The finely dispersed droplets of the water vapor absorbs heat, inert fumes, and
wash-down hazardous vapors. Flow rates may be decreased or increased if so
desired.
The heat absorption capacity amounts to 25,000 kJ/sec.

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
19
MVU Control Panel Features and Operation
1 Engine Warning Lamp 14 Fan Speed Up/Down
2 Wait to Start Lamp 15 Scissors Lift Up/Down
3 Engine Stop Lamp 16 Rotate Right/Left
4 Emergency Stop Lamp 17 Fan Tilt Forward/Back
5 Hydraulic Oil Filter Warning 18 Fan On/Off
6 Hydraulic Oil Level Warning 19 Local/Remote Selector
7 Hydraulic Oil Temp Warning 20 Engine Ignition
8 Lamp Test 21 Emergency Stop
9 Engine Water Temp 22 Compartment Lights
10 Engine Oil Pressure 23 Engine Voltage Meter
11 Engine Display/Diagnostic 24 Engine Fuel Level
12 Engine Tachometer 25 Fan Pump Pressure
13 Yoke Raise/Lower 26 Aux Pump Pressure

TEMPEST MVU Operation Manual
Copyright 2005, Tempest Technology Corporation
20
1 Engine
Warning Lamp
2 Wait to
Start Lamp
3 Engine
Stop Lamp
4 Emergency
Stop Lamp
5 Hydraulic Oil
Filter Warning
6 Hydraulic Oil
Level Warning
7 Hydraulic Oil
Temperature
8 Lamp Test for
4, 5, 6, 7 Lamps
Confirms diagnostic test of the engine.
Confirms diagnostic test of the engine.
Confirms diagnostic test of the engine.
Indicates that the Emergency Stop switch is activated.
When the oil filter of the hydraulic system needs to be changed, the
indicator for the hydraulic filter illuminates. The filter must be
changed after the conclusion of the ventilation operation.
If the oil level is low in the hydraulic tank, the indicator for the
hydraulic oil quantity illuminates. Turn off engine. Fill with hydraulic
oil. The motor can then be turned on again.
If the temperature of the hydraulic oil reaches 190 degrees
Fahrenheit, the indicator for the Hydraulic Oil Temperature
illuminates. Wait until the temperature cools. The motor can then be
turned on again. The hydraulic cooling fan starts when the oil
temperature reaches 145 degrees Fahrenheit.
To test that the warning lamps are functioning properly.