Thank you for purchasing the Nautilus® Commercial Series U916 or R916 bike. For more than 30 years
Nautilus has been producing the world’s finest fitness equipment used in health clubs and homes around
the globe. We hope this product exceeds your expectations and is a valuable tool for your facility.
Please carefully read through this manual to familiarize yourself with the operation of your new Nautilus
bike. Doing so will help to insure that your users get the most out of your bike, enjoying safe and
effective workouts ahead.
Nautilus, Inc.
World Headquarters
16400 SE Nautilus Drive
Vancouver, Washington, USA 98683
Dimensions: 24” W x 45” L x 57” H (60.96 cm x 114.3 cm x 144.78cm)
Unit Weight: 150 lbs (68 kg)
Shipping Package Weight: 178 lbs (81 kg)
Workout Area: 50” W x 81” L (127 cm x 205.74 cm)
Power Requirements: 9V AC/DC Power Supply (Battery Charger)
Max user weight: 400lbs (182 kg)
Model R916
Dimensions: 24” W x 67” L x 46” H (60.96 cm x 170.18 cm x 116.84 cm)
Unit Weight: 180 lbs (82 kg)
Shipping Package Weight: 231 lbs (105 kg)
Workout Area: 50” W x 103” L (127 cm x 261.62 cm)
Power Requirements: 9V AC/DC Power Supply (Battery Charger)
Max user weight: 400lbs (182 kg)
4
Page 5
SAFETY REQUIREMENTS
IMPORTANT SAFETY INFORMATION:SAVE THESE INSTRUCTIONS
The following definition applies to the word “Warning” found throughout this guide:
Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
PRIOR TO USING THIS EQUIPMENT, OBSERVE THE FOLLOWING WARNINGS
1. Read and understand the Owners Manual prior to using this
machine. If this machine is being used in an Institutional
setting, end users will not have visibilty to this owners
manual. It is therefore the responsibilit y of the facility to
instruct users as to proper usage of the equipment, as well as
making them aware of potential hazards. This machine should
only be used in a supervised area.
2. Read and understand all Warnings on this machine. See the
Safety Warning Labels of this manual.
3. Keep children away from this machine and / or supervise
them closely if they are near the machine or present during
its operation. This machine is not suitable as a children’s
toy. There is a natural tendency for children to want to play
on exercise equipment and parents and other in charge of
children should be aware of their respective responsibilities.
Moving parts that may appear to present obvious hazards to
adults may not appear to do so to children.
4. Consult a physician prior to commencing an exercise
program. If, at any time, you feel faint or dizzy, or experience
pain, stop and consult your physician.
5. Inspect this machine for loose parts or signs of wear. Pay
special at tention to the Seat, Pedals, and Crank Arms. Do
not use if found in this condition; contact Nautilus Customer
Service.
10. Set up the machine so that there is a free area around the
machine of 18 inches (50 cm). Keep third parties out of this
area when the machine is in use.
11. Operate the machine in the manner described in this manual.
It can be hazardous to over-exert yourself during exercise.
12. Make sure that all positional adjustment devices are securely
engaged.
6. This machine is designed for a User’s Weight Limit of 400
pounds (182 kg). Do not use if you are over this weight.
7. This machine contains moving parts. Use Caution. Do not
wear loose clothing or jewelry.
8. Set up and operate this machine on a solid level surface.
9. Care should be taken in mounting and dismounting the
exercise machine.
Nautilus® Commercial Series Bike Owner’s Manual
5
Page 6
SAFETY WARNING LABELS
The following safety warnings are located on the Nautilus® Commercial Series Bike. Please read all safety precautions and
warning information prior to using your product. Be sure to replace any warning label if damaged, illegible, or missing. If
you need replacement labels, please call a Nautilus Representative at (800) 628-8458 (North America) or +41-26-460-77-77
(International office).
Label 2
Label 1
Label 1
Label 2
6
Page 7
SAFETY WARNING LABELS
The following safety warnings are located on the unit. Please review and understand the safety warning labels and their
locations on the unit prior to use.
If you do not have, or cannot find, or need to replace a warning label please call 1-800-628-8458 (North America) or
+41-26-460-77-77 (International office) to obtain a new label.
Label 1: See Figure 1 for general warning label.
Location: The warning label in Figure 1 is located on the
side of the console mast.
Label 2: See Figure 2 for general exercise warning label.
Figure 2
Location: Affixed to the console face below the keypanel.
Figure 1
Nautilus® Commercial Series Bike Owner’s Manual
7
Page 8
TRANSPORT
Moving Your Machine
To move the upright bike, stand in front of the machine and grasp the handlebars. Pull down until the transport
wheels are in contact with the ground.
tilting machine up to contact the transport wheels with the ground. Use the stabilizer bars instead, to avoid any
damage to the plastic covers.) The machine can now be rolled on the transport wheels.
The recumbent bike is heavy and requires two people to safely move from one location to another. To move, have
two people lift up the rear end of the machine until the transport wheels are in contact with the ground. The
machine can now be rolled on the transport wheels.
Note: The transport wheels are intended for indoor use only and should never be rolled on concrete or asphalt
surfaces.
(Note: Do not push down on the plastic shroud with your feet when
8
Page 9
GETTING STARTED
Note: Throughout this manual, all references to the left or right side and to the front or back are
made as if you were on the machine, ready to exercise.
Guidelines for Getting On and Off the Bike
Instruct each user in the following guidelines for getting on and off the bike.
Adjustments
You should check two adjustments before using the Nautilus® U916 or R916 bike: the seat and the pedal foot strap
length.
Seat Height Adjustment on the U916 Upright Bike
Sit on the seat. Put both feet onto the pedals and into the foot straps. Pedal slowly and then stop when one leg is
extended and your foot is as close to the floor as possible. The knee of the extended leg should be slightly bent
when the sole of your foot is parallel to the floor. If you need to adjust the seat higher, get off the bike and stand to
one side. Pull up on the saddle (it’s not necessary to release the seat adjustment handle to adjust the seat higher).
The seat adjustment mechanism will automatically lock into place once you have reached your desired seat
height. To lower the seat, pull up on the seat adjustment handle (located under the front of the saddle) to release
the locking mechanism, and then gently lower the saddle to your desired seat height. Release the seat adjustment
handle and the seat will automatically lock into place. Lower or raise the seat as necessary.
It is also possible to adjust the seat without getting off the bike. Simply take your weight off the saddle while in the
pedals, and raise or lower the saddle as described above.
TO AVOID INJURY, PLEASE CAREFULLY
FOLLOW THE INSTRUCTIONS.
DO NOT ADJUST THE SEAT HEIGHT
WITH YOUR WEIGHT ON THE SADDLE.
Seat Adjustment on the R916 Recumbent Bike
Sit on the seat. Put both feet onto the pedals and into the foot straps. Pedal slowly and then stop when one leg is
extended. The knee of the extended leg should be slightly bent. The seat adjustment lever is located in front of the
seat base. Remain seated and keep your feet on the pedals. Pull up on the lever and slide forward or backward as
necessary. Push the lever down completely to lock into place. Make sure the seat is locked in place by trying to
move the seat forward and backward before you start pedaling.
Foot strap Adjustment
To ensure your feet are properly secured to the pedals, you need to check the position of the foot straps. Position
your foot so that the ball of your foot is over the pedal spindle. The pedal foot straps should be tight enough to
Nautilus® Commercial Series Bike Owner’s Manual
9
Page 10
GETTING STARTED
secure your feet to the pedals but not so tight so as to cut off the circulation.
There is a ratcheting strap and buckle system on the outside of the foot strap
and two adjustment holes on the inside foot strap mount. To tighten the strap,
pull the end of the strap through the self-locking buckle as needed. To loosen
the strap, push down on the buckle mechanism to release the lock, and adjust
as necessary. If you cannot reach the adjustment straps while seated on the
bike, get off the bike and stand to one side. If you need to make additional
adjustments, carefully grasp the pedal with one hand and pull the outside end
of the foot strap off the inside adjustment tab with your other hand. Insert the
adjustment tab through the proper hole on the foot strap.
1. Position yourself comfortably on the bike and begin pedaling. You should see the “SELECT WORKOUT” message on
the display.
2. Select the MANUAL exercise program so you can control the pace of
your first workout and get used to the exercise motion. Press [MANUAL]
and then press [ENTER].
Footstrap
3. The console will prompt you to enter your body weight. Enter your
weight in pounds (or kilograms if the console is set to metric units).
Correct entry errors by pressing [CLEAR] before you press [ENTER] .
4. The console will prompt you to enter your intensity level. Enter your
desired intensity level from 1 (very easy) to 20 (extremely hard). First
time users may want to select a low intensity level, for example, level 3.
Correct entry errors by pressing [CLEAR] before you press [ENTER] .
5. The console will prompt you to enter the workout time in one-minute
increments between 5 and 99 minutes. Press [1], [0], [ENTER] to
exercise for ten minutes. After time is entered, the console will display
“ENJOY WORKOUT” and your program will begin. If you do not start
exercising within 30 seconds, the console will return to the start screen.
6. Begin pedaling at a comfortable, natural rate. When you begin to
exercise, the MANUAL program starts at the level you selected during
data entry.
7. As you become comfortable with the exercise motion, press [LEVEL:
and [LEVEL:
] to adjust the resistance.
U916 bike
]
8. Relax while exercising.
9. Before stepping off the bike, use the handlebars or the static bars on the
side of the console on the R916 bike for balance, wait until the pedals
have stopped moving, then step off.
10
R916 bike
Page 11
The bike display is a
computerized panel
used to operate the
bike and see all
workout data and
operational status.
You should
familiarize yourself
with the operation of
the bike and location
of all keys before
beginning use.
BIKE CONSOLE
Understanding the Display and Controls
The machine’s console is a computerized panel used to operate your exercise bike and to
display all workout data. Take time to read through the following sections so that you can
properly understand its operation and take full advantage of all of your machine’s workout
options.
Display Definitions and Functions
The following describes the display functions on the Commercial Series R916 and U916 bikes.
Time—The selected workout time is displayed in the upper left section of the upper display
window. In most of the workouts, the timer will count down, in minutes and seconds, until
the workout is finished or stopped. If (0) is entered in the (MANUAL) or (HR ZONE TRAINER)
workout, the timer will count up.
Interval Timer—The interval timer is displayed in the lower display, upper left corner. The
interval timer counts down the remaining time within each interval.
Resistance Level—Displays the current intensity level between 1 (the easiest) and 20 (the
hardest). Pressing the
decreases the workload intensity.
key increases the workload intensity and pressing the key
Nautilus® Commercial Series Bike Owner’s Manual
11
Page 12
DISPLAY AND CONTROLS
Heart Rate—Current heart rate, in beats per minute, is displayed next to the
heart icon on the lower display.
Percentage of Maximum Heart Rate—An approximation of maximal heart
rate is calculated based on the latest American College of Sports Medicine
User should consult a physician to
determine an appropriate target
heart rate in which to exercise in
based on age, weight and physical
condition. While Nautilus provides
some target heart rate ranges,
these are only approximations and
should not be viewed as a medical
recommendation.
predictive equation as follows:
Max Heart Rate = 215 – (Age * .75)
Percentage of maximum heart rate will only be shown in HRC programs.
Example: For a person 40 years of age, max HR is estimated
as (215 – (40 (age) * .75) = 185 .
185 beats per minute would be the approximate maximum heart rate for a 40year-old user.
185 = 76%) will be displayed in the upper left corner of the lower display area.
This means that the 40-year-old user working at 140 beats per minute is at 76%
of their maximum heart rate.
If the user works out at 140 beats per minute, then 76% (140 /
(See the Heart Training programs for more information.)
Distance—Provides a cumulative total of the equivalent distance, in miles (or
kilometers if your display is set to metric units), you have traveled.
Calories— Provides a current total of the number of Calories burned during
a workout. Note: this number is only an approximation as a user’s caloric
expenditure will vary significantly based on a person’s age, gender, weight and
metabolism.
Calories/Hour— Provides the rate at which calories are burned per hour at the
current resistance level and RPM.
Speed— Displays the speed in in miles per hour (or kilometers per hour).
RPM— Displays the pedal revolutions per minute.
Watts—During a workout, this statistic displays the power output at the
current RPM and intensity Level, displayed in watts (746 watts = 1 hp).
METs—Gives you the relative energy cost of exercise. MET stands for
multiple of the resting metabolic rate. While you are sitting quietly, your body
consumes oxygen at the rate of 1 MET or about 3.5 milliliters per kilogram of
body mass per minute. When you exercise, your body needs more oxygen in
order to function. For example, exercising at 10 METs requires ten times the
resting rate of oxygen consumption, or about 35 milliliters per kilogram per
minute. During a workout, the display shows the current MET level. During
the workout summary, the average MET level is displayed. During your
12
Page 13
KEY FUNCTIONS
workout, keeping track of the METs will show you how hard you are working—the higher the MET level,
the harder you are working.
Workout Profile—The dot-matrix area of the display shows the actual course profile of the selected
exercise program. The taller the column, the higher the resistance level and/or METs for that interval.
The flashing column shows your current interval.
U916 handlebars
R916 handlebars – at sides of seat
Key Functions
Remote Operation Control™ (ROC™)
The Remote Operation Control
heart rate grips. The bike can be controlled from these keypads. The ROC
includes a Quick Start key and a Display LOCK /UNLOCK key. The ROC
the Level UP and DOWN keys. These keys work exactly the same as the keys on the console.
™
functions are located on the end of the handlebars above the contact
™
keypad on the left side
™
keypad on the right side includes
Left ROC™ keypad
Right ROC™ keypad
Nautilus® Commercial Series Bike Owner’s Manual
13
Page 14
KEY FUNCTIONS
Display LOCK / UNLOCK - Statistics Key
During the exercise program, the Display LOCK / UNLOCK key is used to track workout statistics which
are shown in the text line of the display window. When a workout is started, the display is in an unlocked
mode and the various exercise statistics will scroll in order. Press the [DISPLAY] key once to turn off the
scan feature and show the current statistic in the display window. Press the [DISPLAY] key a second
time and the scan feature will turn back on to scroll through the different statistics.
When in the Display Unlock mode, the console will cycle through the following statistics in order:
Distance, Calories/Hour, RPM, Speed (mph or kph), Watts, METs, Level.
At the completion of a workout, the statistic averages are calculated based on the accumulation of data
during the workout program.
Quick Start Key
to provide any user information.
Level (Intensity) UP & DOWN Keys
a workout between Level 1 (the easiest) and Level 20 (the hardest). Pressing the
workload intensity and pressing the
Level key, the text line will show the target level. Further presses will increase or decrease the Level.
Stop Key
Press the STOP Key a second time, and the workout statistics will be displayed, then the console will
return to the “SELECT WORKOUT” prompt.
Numeric Keypad (0-9)
setup, this keypad allows you to quickly enter requested information such as time, age, intensity Level ,
weight and heart rate.
• Enter— The ENTER Key confirms workout selections and stores the information used by the console
• Clear— During data entry, the CLEAR Key erases information from the console memory and backs up
—Press the STOP Key any time you want to pause the workout program for up to one minute.
—The Quick Start Key provides an immediate start to a workout session without having
—The exercise intensity level may be changed at any time during
key increases the
key decreases the workload intensity. After the first press of a
—The numeric keypad is located on the right side of the console. During program
to calculate workout statistics.
to the previous data entry prompt.
14
Page 15
WORKOUT PROGRAM OVERVIEW
The Commercial Series U916 and R916 bikes have a wide variety of programming options with a great amount
of flexibility to allow anyone of any fitness level to use.
Workout Program Keypad
The workout program keypad is located to the left of the display. There are six workout program keys,
including a More Workouts key with multiple advanced program options.
While the console is in the “SELECT WORKOUT” mode, press one of the exercise program keys to preview the
desired workout. After selecting the desired workout, simply follow the prompts to enter the required user
data for that program.
When entering data, the user can select the standard default values by pressing [ENTER] at the display
prompt without first typing data. This will set up the console with the following default data:
• Weight—175 lbs. (80 kg)
• Intensity Level— 1
Nautilus® Commercial Series Bike Owner’s Manual
15
Page 16
WORKOUT PROGRAM OVERVIEW
• Age (HR Zone Trainer program only) —40 years
• Workout Time
Manual and HR Zone Trainer programs do not have a specified default time. In this program, the
console timer will count up to the maximum time of 99 minutes.
Once you have selected a program, follow the console prompts.
• ENTER WEIGHT —type in your body weight in pounds (or kilograms if your console is set to metric
units).
• ENTER LEVEL
• ENTER TIME 5 - 99
—The default time in the programmed workouts and Quick Start is 20 minutes. The
—type in your desired intensity level. The bike has 20 intensity levels (1 to 20).
—select the workout duration in one minute increments from 5 to 99.
16
Page 17
QUICK START AND MANUAL PROGRAMS
The Quick Start Program
CALORIES BURNED
Your weight, RPM, and
intensity level are used
to calculate the number
of calories burned for
each minute of exercise
and the total number of
calories burned for the
exercise session.
Provides an immediate start, without having to enter any user information. This
program uses the standard default settings to calculate calories burned during a
workout session.
To use the Quick Start program:
1. Press the [QUICK START] key. A message, “ENJOY WORKOUT” is displayed,
the workout begins with exercise statistics accumulating.
2. During the workout:
The intensity level may be changed at any time during the workout by pressing
the [Level: UP] key to increase the resistance, or the [Level: DOWN] key to
decrease the resistance. Any changes to the intensity level will be displayed in
the current flashing column. The new intensity level will continue through the
rest of the workout until changed using the Level keys.
3. Press [STOP] to pause the workout. Press [STOP] again to end the workout.
The workout statistics will be displayed, and then the console will revert back to
the “SELECT WORKOUT” message.
The Manual Program
The Manual Program allows you to control the intensity level of the bike during the
workout, while accurately calculating exercise statistics based on your weight. The
default intensity level is 1 unless changed during the data entry mode. The workout
profile in the display window is divided into 30 equal intervals within the selected
workout time. The profile is based on the MET level, with every 1 MET equating to
one vertical bar. MET level is based on a combination of intensity level and RPM.
To use the Manual program:
1. Press the [MANUAL] key. The message, “MANUAL WORKOUT” will be
displayed in the text line and the workout profile displayed in the lower display.
Press [ENTER] to accept.
2. The console will display “ENTER WEIGHT - LBS” (or “ENTER WEIGHT - KG” if in
Metric mode). Enter your weight using the numeric keypad and press [ENTER].
Or, press [ENTER] to accept the default value.
Your weight is used to calculate the number of calories burned for each minute
of exercise and the total number of calories burned for the exercise session.
Nautilus® Commercial Series Bike Owner’s Manual
17
Page 18
FAT BURNER PROGRAM
3. The console will display “ENTER LEVEL 1 - 20”. Enter the desired intensity level
using the numeric keypad and press [ENTER]. Or, press [ENTER] to accept the
default value.
4. Next, the console will display “ENTER TIME 5 – 99”. Enter the desired time and
press [ENTER]. Or, press [ENTER] to select the default time.
If you press [0], then the timer will count-up from 0:00 to the maximum time of 99: 00.
CALORIES BURNED
Your weight, RPM,
and intensity level
are used to calculate
the number of
calories burned
for each minute of
exercise and the total
number of calories
burned for the
exercise session.
5. The console will display “ENJOY WORKOUT” and the timer will begin.
The intensity level may be changed at any time during the workout by pressing the
[Level: UP] key to increase the resistance, or the [Level: DOWN] key to decrease
the resistance. Any changes to the intensity level will be displayed in the current
flashing column. The new intensity level will continue through the rest of the
workout until changed using the Level keys.
6. Press [STOP] to pause the workout. Press [Stop] again to end the workout. The
workout statistics will be displayed, and then the console will revert back to the
“SELECT WORKOUT” message.
The Fat Burner Program
The Fat Burner program is a 30-interval workout designed with moderate changes in
intensity level designed to stimulate fat store assimilation for users on a weight control
program. The profile in the center display indicates relative intensity. Any changes to
the intensity level will not change the look of the remaining profile; however, the new
intensity level will continue through the rest of the workout.
To use the Fat Burner program:
1. Press the [FAT BURNER] key. The message, “FAT BURNER”, will be displayed on the
text line with the workout profile displayed in the lower display. Press [ENTER] to
accept.
2. The console will display “ENTER WEIGHT - LBS” (or “ENTER WEIGHT - KG” if in
Metric mode). Enter your weight using the numeric keypad and press [ENTER]. Or,
press [ENTER] to accept the default value.
Your weight is used to calculate the number of calories burned for each minute of
exercise and the total number of calories burned for the exercise session.
3. The console will display “ENTER LEVEL 1 - 20”. Enter the desired intensity level
using the numeric keypad and press [ENTER]. Or, press [ENTER] to accept the
default value.
18
Page 19
CALORIE BURNER PROGRAM
4. Next, the console will display “ENTER TIME 5 – 99”. Enter the desired time and press [ENTER].
Or, press [ENTER] to select the default time.
5. The console will display “ENJOY WORKOUT” and the timer will begin.
The intensity level may be changed at any time during the workout by pressing the [Level: UP]
key to increase the resistance, or the [Level: DOWN] key to decrease the resistance. Any
changes to the intensity level will not change the look of the remaining profile; however, the new
intensity level will continue through the rest of the workout.
6. Press [STOP] to pause the workout. Press [Stop] again to end the workout. The workout
statistics will be displayed, and then the console will revert back to the “SELECT WORKOUT”
message.
The Calorie Burner Program
The Calorie Burner program is a 30 interval workout designed for users wanting to increase their
aerobic capacity. The changes of the intensity in the program are greater than the changes in the
Fat Burner program, and are designed specifically to tax the cardiorespiratory system. The profile
in the center display indicates relative intensity. Any changes to the intensity level will not change
the look of the remaining profile; however, the new intensity level will continue through the rest of
the workout.
To use the Calorie Burner program:
1. Press the [CALORIE BURNER] key. The message, “CALORIE BURNER”, will be displayed on the
text line with the workout profile displayed in the lower display. Press [ENTER] to accept.
2. The console will display “ENTER WEIGHT - LBS” (or “ENTER WEIGHT - KG” if in Metric mode).
Enter your weight using the numeric keypad and press [ENTER]. Or, press [ENTER] to accept
the default value.
Your weight is used to calculate the number of calories burned for each minute of exercise and
the total number of calories burned for the exercise session.
3. The console will display “ENTER LEVEL 1 - 20”. Enter the desired intensity level using the
numeric keypad and press [ENTER]. Or, press [ENTER] to accept the default value.
4. Next, the console will display “ENTER TIME 5 – 99”. Enter the desired time and press [ENTER].
Or, press [ENTER] to select the default time.
5. The console will display “ENJOY WORKOUT” and the timer will begin.
The intensity level may be changed at any time during the workout by pressing the [Level: UP]
key to increase the resistance, or the [Level: DOWN] key to decrease the resistance. Any
Nautilus® Commercial Series Bike Owner’s Manual
19
Page 20
INTERVALS PROGRAM
CALORIES BURNED
Your weight, RPM, and
intensity level are used
to calculate the number
of calories burned for
each minute of exercise
and the total number of
calories burned for the
exercise session.
changes to the intensity level will not change the look of the remaining profile;
however, the new intensity level will continue through the rest of the workout.
6. Press [STOP] to pause the workout. Press [Stop] again to end the workout.
The workout statistics will be displayed, and then the console will revert back
to the “SELECT WORKOUT” message.
The Intervals Program
The Intervals program is an interval workout containing 8 alternating rest
intervals with 7 exercise intervals. An interval cycle consists of a work phase and
a rest phase. You may scale the rest intensity level and the work intensity level
independently—which will be saved for the remainder of the workout.
To use the Intervals program:
1. Press the [INTERVALS] key. The message, “INTERVALS”, will be displayed
on the text line with the workout profile displayed in the lower display. Press
[ENTER] to accept.
2. The console will display “ENTER WEIGHT - LBS” (or “ENTER WEIGHT - KG”
if in Metric mode). Enter your weight using the numeric keypad and press
[ENTER] . Or, press [ENTER] to accept the default value.
Your weight is used to calculate the number of calories burned for each
minute of exercise and the total number of calories burned for the exercise
session.
20
3. The console will display “ENTER WORK LEVEL”. Enter the desired work
intensity level using the numeric keypad and press [ENTER] . Or, press
[ENTER] to accept the default value.
4. The console will display “ENTER REST LEVEL”. Enter the desired rest
intensity level using the numeric keypad and press (ENTER). Or, press
(ENTER) to accept the default value.
5. Next, the console will display “ENTER TIME 5 – 99”. Enter the desired time
and press [ENTER] . Or, press [ENTER] to select the default time.
6. The console will display “ENJOY WORKOUT” and the timer will begin.
The intensity level may be changed at any time during the workout by
pressing the [Level: UP] key to increase the resistance, or the [Level: DOWN]
Page 21
INTENSITY CONTROL
The intensity level may be
changed at any time during
the workout by pressing the
[Level: UP] key to increase
the resistance, or the [Level:
DOWN] key to decrease the
resistance. Any changes
to the intensity level will
only change the level in the
current rest or work phase.
INTERVALS PROGRAM
key to decrease the resistance. Any changes to the intensity level will
only change the level in the current rest or work phase.
To change the intensity level of the work phase, you must change the
intensity level during a work phase. To change the intensity level of
the rest phase, you must change the intensity level during a rest phase.
Changing the intensity level will not change the look of the remaining
profile; however, the new intensity level will continue through the rest of
the workout.
7. Press [STOP] to pause the workout. Press [STOP] again to end the
workout.. The workout statistics will be displayed, and then the console
will revert back to the “SELECT WORKOUT” message.
To change the intensity
level of the work phase, you
must change the intensity
level during a work phase.
To change the intensity
level of the rest phase, you
must change the intensity
level during a rest phase.
Changing the intensity level
will not change the look
of the remaining profile;
however, the new intensity
level will continue through
the rest of the workout.
Nautilus® Commercial Series Bike Owner’s Manual
21
Page 22
HEART RATE ZONE TRAINER PROGRAM
Heart Rate (HR) Zone Trainer Program
The Heart Rate Zone Trainer program allows you to exercise at a selected
target heart rate by automatically varying the intensity level (resistance)
User should consult a physician to
determine an appropriate target
heart rate in which to exercise in
based on age, weight and physical
condition. While Nautilus provides
some target heart rate ranges,
these are only approximations and
should not be viewed as a medical
recommendation.
during the workout. The default target heart rate is equal to 70% of your
maximum heart rate which is calculated by the following equation:
Max HR = 215 – (.75 * Age). Target HR = Max HR * .7
To choose a different target heart rate (between 100 and 180 beats per
minute) at any time during the workout, use the numeric keypad to enter the
new target heart rate, followed by the [ENTER] key.
To use the HR Zone Trainer program:
1. For best results, use a telemetry heart rate chest belt. However, you can
also use the contact HR grips located just below the console on the U916
handlebars or on the ends of the handlebars on both the U916 and the
R916 bikes.
If you are using the telemetry HR method, put the chest strap on.
Remember to wet the electrodes underneath the chest strap. The console
must detect a heart rate signal to allow selection of the HR Zone Trainer
program.
If you will be using contact HR, then place your hands on the contact HR
grips below the console on the U916 handlebars or on the ends of the
handlebars on both the U916 and the R916 bikes.
CALORIES BURNED
Your weight, RPM, and
intensity level are used to
calculate the number of
calories burned for each
minute of exercise and the
total number of calories
burned for the exercise
session.
22
2. Press the [HR ZONE TRAINER] key. The message, “HR ZONE TRAINER”,
will be displayed on the text line with the workout profile in the lower
display. Press [ENTER] to accept.
3. The console will then display “Checking for HR. Need HR belt or Hold HR
sensors”. When the console detects a valid signal it will then proceed to
the next step.
4. The console will display “ENTER WEIGHT - LBS” (or “ENTER WEIGHT
- KG” if in Metric mode). Enter your weight using the numeric keypad and
press [ENTER]. Or, press [ENTER] to accept the default value.
Your weight is used to calculate the number of calories burned for
each minute of exercise and the total number of calories burned for the
exercise session.
Page 23
HEART RATE ZONE TRAINER PROGRAM
5. The console will display “ENTER AGE 10 -99.” Enter your age using the numeric keypad and
press [ENTER]. Or, press [ENTER] to accept the default value of 40 years old.
6. The console will display “TARGET HR.” A suggested target heart rate will be displayed,
based on your age. Press [ENTER] to accept the calculated target heart rate, or enter a
different target heart rate using the numeric keypad and then press [ENTER]. Or, press
[ENTER] to accept the default value.
7. The console will display “ENTER TIME 5-99.” Enter the desired time and press [ENTER].
Or, press [ENTER] to accept the default value.
8. The console will display “ENJOY WORKOUT” and the timer will begin.
The following messages may be displayed during a workout:
“CHECK HR BELT”
“HOLD HR SENSORS”
“HR BELT NEEDED”
“HR MODE DISABLED”
9. Press [STOP] to pause the workout. Press [STOP] again to end the workout. The
workout statistics will be displayed, and then the console will revert back to the “SELECT
WORKOUT” message.
Indicates that the telemetry heart rate signal has
been missing for the last 30 seconds.
Indicates that the contact heart rate signal has
been missing for the last 30 seconds.
No telemetry belt signal has been sensed during
the initial setup time.
No heart rate signal is allowed due to the set up
option that was chosen. Heart rate monitoring is
not possible. To change HR option, refer to the HR
Priority section of this manual.
TARGET HEART RATE
The target heart rate selected by the console is based on age, and is equal to 70% of
your maximum heart rate which is calculated by the following equation:
Max HR = 215 – (.75 * Age)
Target HR = Max HR * .7
If desired, change the target heart rate at this point by using the numeric keypad to
enter the new target heart rate, and then press [ENTER].
During a workout, change to a new target heart rate that is between 100 and 180
beats per minute at any time by using the numeric keypad to enter the new target
heart rate, and then pressing (ENTER). The intensity level will change automatically
to achieve the new target heart rate.
Nautilus® Commercial Series Bike Owner’s Manual
23
Page 24
MORE WORKOUTS
More Workouts
Press the More Workouts key for several advanced program options outlined below. Press the LEVEL
UP or DOWN keys to scroll through the MORE WORKOUTS program options. Press ENTER when desired
program is displayed.
The Nautilus® Fit Test Program
Understanding Sub-maximal Exercise Testing
Before using the Nautilus
sub-maximal tests make several assumptions:
• That a steady-state heart rate is obtained for each exercise workload.
• That a linear relationship exists between heart rate, oxygen uptake and workload.
• That the maximal heart rate for a given age is uniform.
• That the mechanical efficiency of the physical activity performed (i.e., oxygen uptake at a given
workload) is the same for everyone.
It should be kept in mind that any one or all of the above mentioned assumptions may not be met during a
sub-maximal exercise test. If for any reason one of the assumptions is not met, then errors in predicting
VO2 max will occur.
Unfortunately, it is often quite difficult to meet all of the requirements for the four listed assumptions.
For example, exercising at a given workload for only a few minutes can involve an insufficient amount
of time for many individuals to achieve a true steady-state. To ensure that a steady-state has been
achieved, the heart rate should be measured after two minutes of exercise at a given workload and
again after the third minute of exercise at that workload. These two heart rates should then be
compared. If a difference of more than five beats per minute between the two is found, the subject
should continue to exercise at one-minute intervals at the same workload until two successive heart
rates differ by less than five beats per minute.
®
U916 or R916 bike for sub-maximal exercise testing, it should be noted that all
It is also important that the sub-maximal heart rates obtained be between 115 and 150 beats per minute,
because it is within this heart rate range that a linear relationship tends to exist between heart rate and
oxygen uptake or workload for most adults. When the heart rate is less than 115, many external factors
(e.g., talking, laughing, apprehension, etc.) can greatly influence heart rate. Once the heart rate reaches
a level between 115 and 150, external factors no longer influence heart rate, and a linear relationship
exists. As the heart rate rises above 150, the heart-rate/oxygen uptake relationship becomes
curvilinear.
The third assumption involves maximal heart rate. Maximal heart rate is the greatest heart rate that can
be measured when an individual is exercising to the point of volitional fatigue (i.e., exhaustion) during a
24
Page 25
THE NAUTILUS® FIT TEST PROGRAM
graded exercise test. The U916 and R916 bikes use the most current published equation developed to
estimate the average maximal heart rate as follows:
Maximal heart rate = 215 minus (0.75 x age)
Maximal heart rate can, however, vary greatly among different individuals of the same age. One
standard deviation is
or minus 12 heart beats from the average given by a prediction equation. If an individual’s age-predicted
maximal heart rate is higher than that person’s true maximal heart rate, then his/her estimated VO2 max
will be an overestimation of the correct or actual value.
The final assumption addresses the issue of mechanical efficiency. Oxygen uptake at any given
work rate can vary by approximately 15% between different individuals. Therefore, individuals vary
in the amount of oxygen they require to perform a certain exercise workload. Some individuals are
more efficient at performing a given task than others. As a result, the average oxygen consumption
associated with a given workload may vary significantly from one person to another. Thus, VO2 max
predicted by sub-maximal exercise tests tends to be overestimated for those who are mechanically
efficient and underestimated for those who are inefficient.
+12 bpm, which means that two-thirds of the population varies an average of plus
The point to remember is that sub-maximal exercise testing, though not as precise as maximal exercise
testing, is not without advantages. For example, the results of such testing can provide a fairly accurate
reflection of an individual’s fitness status without the cost, risk, effort (on the part of the subject) and
time involved in max testing. If an individual is given repeated sub-maximal exercise tests and that
person’s heart rate response to a fixed workload is found to decrease over time, it is reasonably safe to
conclude that the individual has made improvements in aerobic (cardiorespiratory) fitness, irrespective
of the accuracy of the VO2 max prediction.
Pretest Screening
Prior to any exercise test (maximal or sub-maximal), participants should complete a brief health/
medical questionnaire, have their resting blood pressure and heart rate measured, and provide an
informed consent form. The Physical Activity Readiness Questionnaire (PAR-Q) is an example of a valid
health/medical questionnaire for screening individuals prior to sub-maximal exercise testing. Canadian
health and fitness practitioners have extensively (and quite successfully) used the PAR-Q to determine
whether individuals should be given an exercise test. A “yes” answer to any of the following seven
questions taken from the PAR-Q would disqualify a participant from taking part in an exercise test until
appropriate medical clearance was obtained.
Physical Activity Readiness Questionnaire (PAR-Q)
1. Has your doctor ever said you have a heart condition and recommended only medically supervised
physical activity?
2. Do you have chest pain brought on by physical activity?
Nautilus® Commercial Series Bike Owner’s Manual
25
Page 26
THE NAUTILUS® FIT TEST PROGRAM
3. Have you developed chest pain within the past month?
4. Do you tend to lose consciousness or fall over as a result of dizziness?
5. Do you have a bone or joint problem that could be aggravated by the proposed physical activity?
6. Has a doctor ever recommended medication for your blood pressure or a heart condition?
7. Are you aware, through your own experience or a doctor’s advice, of any other physical reason
against your exercising without medical supervision?
Nautilus® Sub-maximal Fit Test
The Nautilus® Fit Test is a program that estimates maximal aerobic capacity based on heart-rate
response to sub-maximal exercise.
The Nautilus branching protocol is a series of 3-minute stages of continuous exercise at increasing
intensity. The first stage is a warm-up at approximately 4 METs. The intensity of the remaining stages
is based on the heart rate response to the warm-up. The test is designed to raise the steady state heart
rate of the subject to at least 115 beats/minute. It is important to remember that two consecutive heart
rate measurements must be obtained above 115 beats /minute to predict VO2max. The test typically
lasts from 6 to 15 minutes. The test will terminate if the heart rate does not continue to rise from state
to stage.
In the Nautilus
®
protocol, each work rate is performed for 3 minutes, with heart rates recorded during
the final 4 seconds of the second and third minutes of each stage. If the heart rates are within 5
beats/min, then the heart rate during the last minute is plotted against the work rate, and the program
advances to the next 3-minute stage. The program continues for two to four stages until two steady
state heart rates above 115 beats/min are obtained in two consecutive stages. The line generated from
the plotted points is then extended to the age-predicted maximal heart rate. A corresponding maximal
work rate and VO2max can then be calculated.
At the end of the 3rd minute of each stage, if the heart rates at the end of the 2nd and 3rd minute are
not within 5 beats/min of each other, then that work rate is maintained for an additional minute. At the
end of the 4th minute, the heart rate is compared to the heart rate at the end of the 3rd minute. If the
heart rates are within 5 beats/min, then the heart rate during the 4th minute is plot ted against the work
rate. If the heart rate at the end of the 3rd and 4th minute are not within 5 beats/min, then the work rate
is maintained for one more additional minute. If the heart rate at the end of the 4th and 5th minutes are
within 5 beats/min, then the heart rate at the end of the 5th minute is plotted against the work rate. If
the heart rate at the end of the 4th and 5th minutes are not within 5 beats/min, then the test failed.
Once two consecutive heart rate measurements are obtained above 115 beats/min range, then the test
ends successfully and the results are displayed. Estimated maximum aerobic capacity is shown in ml /
kg/min and METs. Next, the results are compared to normative values for others of the same age range
and gender.
26
Page 27
THE NAUTILUS® FIT TEST PROGRAM
To use the Fitness Test program:
1. Put the chest strap on. Remember to wet underneath the chest strap, over the electrodes.
2. Press the [MORE WORKOUTS] key. Then use the Level UP or DOWN keys to scroll through the
program options. When the console displays “NAUTILUS FIT TEST”, press [ENTER] to select.
3. The console will then display “ENTER WEIGHT - LBS” (or “ENTER WEIGHT - KG” if in Metric mode).
Enter your weight using the numeric key keypad.
4. The console will display “ENTER AGE 10 - 99.” Enter your age using the numeric keypad.
5. The console will display “ENTER GENDER / 1 - MALE / 2 - FEMALE. Enter your gender code using
the numeric keypad.
6. The console will display “BEGIN FIT TEST”. Follow the onscreen prompts. The following messages
may be displayed during a fitness test:
“CHECK HR BELT”
Indicates that the heart rate signal has been missing for the
last 30 seconds.
“INCREASE TO 90”
Indicates that your RPMs are below 75 revolutions per
minute. For the Fit Test, RPMs should be held constant at
90 revolutions per minute
“DECREASE TO 90”
Indicates that your RPMs are above 105 revolutions per
minute.
7. The test will be terminated early, and the messages “TEST TERMINATED / TRY AGAIN LATER” will
be displayed if:
• The user stops exercising at any point during the test.
• The [STOP] key is pressed.
• The heart rate response to each work level is the same or less than the previous work level.
• The heart rate never reaches 115 beats/minute.
• The heart rate continues to rise after the fifth minute.
8. The test is complete when two consecutive steady-state heart rates are obtained above 115 beats/
minute. The test can be as short as 6 minutes, or as long as 15 minutes.
No cool down is done at the end of the test.
9. The estimated maximal aerobic capacity is displayed in METs, and VO2max . The results are
compared to normative values of the same age and gender1 (see below), and given a fitness rating
of “Low”, “Fair”, “Average”, “Good”, or “High.”
Low32.2 or less 30.4 or less 28.2 or less 25.4 or less 23.7 or less
1 The American College of Sports Medicine, Guidelines for Exercise Testing and Prescription, 6th Edition, Lippincott WIlliams
& WIlkins, Philidelphia, PA, 20 00, p. 77.
Calorie Goal
The Calorie Goal program allows the user to define a target number of calories to burn during their
workout.
To use the Calorie Goal Program:
1. Press the MORE WORKOUTS key. Then use the Level UP or DOWN keys to scroll through the
program options. When the console displays “CALORIE GOAL”, press [ENTER] to accept.
2. The console will then display “ENTER WEIGHT – LBS” (or “ENTER WEIGHT – KG” if in Metric mode).
Enter your weight using the numeric keypad and press [ENTER). Or, press [ENTER] to accept the
default value.
3. The console will display “ENTER LEVEL”. Enter the desired intensity level using the numeric keypad
and press [ENTER]. Or, press [ENTER] to accept the default value.
4. The console will then display “ENTER CALORIES”. Enter the desired calorie value using the numeric
keypad and press [ENTER]. Or, press [ENTER] to accept the default value.
5. The console will display “ENJOY WORKOUT” and the timer will begin.
28
Page 29
HR INTERVAL PROGRAM
HR Interval Program
The HR Interval program allows the user to define an exercise Target HR, time at exercise Target HR,
recovery Target HR and total exercise time.
To use the HR Interval Program:
1. Press the MORE WORKOUTS key. Then use the Level UP or DOWN keys to scroll through the
program options. When the console displays “HR INTERVALS”, press [ENTER] to accept.
2. The console will then display “Checking for HR. Need HR belt or Hold HR sensors”. When the console
detects a valid signal it will then proceed to the next step.
3. The console will then display “ENTER WEIGHT – LBS” (or “ENTER WEIGHT – KG” if in Metric mode).
Enter your weight using the numeric keypad and press (ENTER). Or, press [ENTER] to accept the
default value.
4. The console will display “ENTER AGE 10 - 99.” Enter your age using the numeric keypad. Or, press
[ENTER] to accept the default value of 40 years old.
5. The console will then display “ENTER WORK TARGET HR”. Enter the desired Target HR using the
numeric keypad and press (ENTER). Or, press [ENTER] to accept the default value.
6. The console will display “WORK TARGET HR.” A suggested target heart rate will be displayed, based
on your age. Press [ENTER] to accept the calculated target heart rate, or enter a different target
heart rate using the numeric keypad and then press [ENTER]. Or, press [ENTER] to accept the default
value.
7. The console will display “ENTER WORK TIME”. This is the amount of time you want to exercise
in the work target heart rate zone. Entire desired work time using the numeric keypad and press
(ENTER). Or, press (ENTER) to accept the default value.
8. The console will then display “REST TARGET HR”. A suggested target heart rate will be displayed,
based on your age. Press (ENTER) to accept the calculated target heart rate, or enter a different
target heart rate using the numeric keypad and then press (ENTER). Or, press (ENTER) to accept the
default value.
9. The console will display “ENTER REST TIME”. This is the amount of time you want to exercise in the
rest target heart rate zone. Enter desired rest time using the numeric keypad and press (ENTER). Or
press (ENTER) to accept the default value.
10. The console will then display “ENTER TIME”. Enter desired total workout time using the numeric
keypad and press “ENTER”. Or, press (ENTER) to accept the default value.
11. The console will display “ENJOY WORKOUT” and the timer will begin.
Nautilus® Commercial Series Bike Owner’s Manual
29
Page 30
RANDOM PLAY PROGRAM
Random Play Workout
The Random Play Workout is a program that randomly changes the intensity throughout the workout time.
1. Press the MORE WORKOUTS key. Then use the Level UP or DOWN keys to scroll through the
program options. When the console displays “RANDOM PLAY”, press [ENTER] to accept.
2. The console will then display “ENTER WEIGHT – LBS” (or “ENTER WEIGHT – KG” if in Metric mode).
Enter your weight using the numeric keypad and press (ENTER). Or, press [ENTER] to accept the
default value.
3. The console will display “ENTER LEVEL”. Enter the desired average intensity level using the numeric
keypad and press (ENTER). Or, press [ENTER] to accept the default value.
4. The console will then display “ENTER TIME”. Enter the desired time and press (ENTER). Or, press
[ENTER] to accept the default value.
5. The console will display “ENJOY WORKOUT” and the timer will begin.
Custom Intervals Workout
In the Custom Intervals workout, users can create a custom interval program by entering Rest Level and
Time, Work Level and Time, and total # of intervals.
To use the Custom Intervals Program:
1. Press the MORE WORKOUTS key. Then, use the Level UP or DOWN keys to scroll through the
program options. When the console displays “CUSTOM INTERVALS”, press [ENTER] to accept.
2. The console will then display “ENTER WEIGHT – LBS” (or “ENTER WEIGHT – KG” if in Metric mode).
Enter your weight using the numeric keypad and press (ENTER). Or, press [ENTER] to accept the
default value.
3. The console will display “ENTER WORK LEVEL”. Enter the desired intensity level using the numeric
keypad and press (ENTER). Or, press [ENTER] to accept the default value.
4. The console will then display “ENTER WORK TIME”. Enter the desired time and press (ENTER). Or,
press [ENTER] to accept the default value.
5. The console will display “ENTER REST LEVEL”. Enter the desired intensity level using the numeric
keypad and press (ENTER). Or, press [ENTER] to accept the default value.
6. The console will then display “ENTER REST TIME”. Enter the desired time and press (ENTER). Or,
press [ENTER] to accept the default value.
30
Page 31
WORKOUT PROGRAM OPTIONS
7. The console will display “# OF INTERVALS”. Enter the desired number of intervals using the numeric
keypad and press (ENTER). Interval range is 1 - 15. Or, press [ENTER] to accept the default value.
8. The console will display “ENJOY WORKOUT” and the timer will begin.
The intensity level may be changed at any time during the workout by pressing the [Level: UP] key to
increase the resistance, or the [Level: DOWN] key to decrease the resistance. Any changes to the
intensity level will only change the level in the current recovery or exercise phase.
To change the intensity level of the exercise phase, you must change the intensity level during an
exercise phase. To change the intensity level of the recovery phase, you must change the intensity
level during a recovery phase. Changing the intensity level will not change the look of the remaining
profile; however, the new intensity level will continue through the rest of the workout.
Options During a Workout
After the message, “Enjoy Workout”, is displayed, your workout statistics will begin to accumulate. The
exercise statistics include, in order:
Distance
Calories / Hour
RPM (revolutions per minute)
Speed
Power in watts
METs
Intensity Level
Target Heart Rate (in Heart Rate Control programs only)
The 20 x 30 brickyard in the lower half of the display will show the exercise profile of the workout
program selected. Each column represents an equal portion of the total workout and the flashing column
will advance across the brickyard as you progress through your workout.
Changing Intensity Level or Target Heart Rate During a Workout
During the workout, the intensity level may be changed at any time during the workout by pressing the
[Level: UP] key to increase the resistance, or the [Level: DOWN] key to decrease the resistance. The
console will display “LEVEL”.
Nautilus® Commercial Series Bike Owner’s Manual
31
Page 32
WORKOUT PROGRAM OPTIONS
In Heart Rate Control programs, you can use the numeric keys to change the
TARGET HEART RATE
The WORK target heart rate
selected by the console is
based on age, and is equal to
80% of your maximum heart
rate which is calculated by
the following equation:
Max HR = 215 – (.75 * Age)
Target HR = Max HR * .8
If desired, change the target
heart rate at this point by
using the numeric keypad to
enter the new target heart
rate, and then press [ENTER].
Change to a new target heart
rate (between 100 and 180
beats per minute) during a
workout by using the numeric
keypad to enter the new
target heart rate, and then
pressing [ENTER].
Target Heart Rate. If the user presses a numeric key in a Heart Rate Control
program, then the message line will display “TARGET HR”.
Once you enter your desired target heart rate, press [ENTER] to accept, and the
console will gradually change the resistance to move you to the new target heart
rate.
Pausing Your Workout
The program automatically enters the PAUSE state from a workout when the
STOP key is pressed. The workout will be suspended, and the program will
display the following alternating messages every 3 seconds for up to 1 minute:
“WORKOUT PAUSED. PRESS STOP OR START”.
When the program enters a PAUSE state, the interval timer begins to count down
from 1 minute to show you the time remaining in the pause condition.
To leave the PAUSE state:
• At the end of the one minute count down, the current workout ends, the
accumulated exercise statistics are scrolled, and the program returns to the
opening message.
• If the user presses [STOP], then the program ends, the accumulated exercise
statistics are scrolled, and the program returns to the opening message.
The REST target heart rate
selected by the console is
based on age, and is equal to
65% of your maximum heart
rate which is calculated by
the following equation:
Max HR = 215 – (.75 * Age)
Target HR = Max HR * .65
If desired, change the target
heart rate at this point by
using the numeric keypad to
enter the new target heart
rate, and then press [ENTER].
• If the user presses the [START] key, then the workout proceeds from where it
was suspended.
End of Your Workout
The program is at the end of the workout when the workout time is completed,
or from the PAUSE state when the [STOP] key is pressed. At this point, each
workout statistic is scrolled with averages calculated and displayed for RPMs,
Speed, Calories/Hour, Level, Watts, METs, and Heart Rate.
After the statistics are scrolled, the program returns to the opening message. If
you want to replay the exercise statistics, press the Display LOCK/UNLOCK key,
and each exercise statistic will be scrolled once for 3 seconds.
32
Page 33
Heart rate monitoring helps users monitor their levels of exertion by displaying the heart rate during
exercise. There are two methods of monitoring heart rate on the Commercial Series U916 and R916 bikes:
PACEMAKER USERS SHOULD NOT
USE THE TELEMETRY TRANSMIT TER
WITHOUT FIRST CONSULTING WITH
THEIR DOCTOR.
Telemetry Heart Rate
HEART RATE MONITORING
• Telemetry (e.g. using a Polar® or Polar-compatible transmitter belt). A
Polar-compatible heart rate chest belt transmits the heart beat signal to
the receiver in the display. The display shows
the heart rate in beats per minute and uses the
heart rate value in heart rate control mode.
• Contact heart rate (handgrip). Sensors on the
handgrip detect heart rate and display it on the
controller.
The telemetry heart rate monitoring system consists of the receiver, located in the display, and a
transmitter belt (purchased separately) worn across your chest. The monitoring function is activated as
soon as you strap on the chest belt and step within range of the receiver in the machine. Two electrodes
on the underside of the chest belt sense the heart rate signal and send it to the receiver. The far right
decimal point in the Heart Rate Display pulses to indicate that the display is receiving a valid signal.
A microprocessor in the controller calculates the heart rate and shows it, in beats per minute, on the
display.
Before you put the transmitter belt on, wet the two electrode patches (the grooved rectangles on the
reverse side of the belt). Secure the transmitter belt as high under the pectoral muscles (chest) as is
comfortable. The transmitter belt should fit snugly and comfortably, and allow normal breathing.
After the initial belt signal is detected, the display will enter a validation phase in which four good heart
beat signals lasting four seconds are required before locking on telemetry heart rate signals for the
duration of the workout session.
If your heart rate is not being displayed, try the following:
• Move closer to the display.
• Tighten the elastic band on the chest belt.
• Adjust the belt higher or lower on your chest.
• Remoisten the electrodes.
• Test your chest strap with a machine that you know is working, or with a heart rate watch that you
know is working.
Nautilus® Commercial Series Bike Owner’s Manual
33
Page 34
HEART RATE PRIORITY
Maintaining the Transmitter Belt
Clean the chest belt regularly with mild soap and water, then dry thoroughly — residual sweat and
moisture keeps the transmitter active and will drain the battery in the transmitter. Do not use abrasives
or chemicals such as steel wool or alcohol for cleaning, as they can damage the electrodes permanently.
Replacement belts can be purchased from an Authorized Nautilus Fitness Retailer or at
www.nautilus.com.
Contact Heart Rate
Through the use of stainless steel sensors built into the handle bar and using
sophisticated software, heart rate can be checked at any time during a workout. As
with the wireless telemetry chest belt, the heart rate is shown on the display in the
same manner.
The contact heart rate system’s ability to detect a heart rate signal is influenced by several factors.
Movement of the muscles of the upper body produces an electrical signal (muscle artifact) that will
interfere with the detection of the heart rate signal by the sensors. Movement of the hands while they
are in contact with the sensors also produces interference. Calluses and hand lotion act as an insulating
layer to reduce the signal strength. Also, the EKG signal generated by some individuals is not strong
enough to be detected by the sensors. These individuals should opt for the telemetry method of heart
rate monitoring.
Contact heart rate input signals are acquired only during contact between your hands and the stainless
steel sensors on the handrails. To use the contact heart rate feature, place your hands around the
handles so that your hands touch both the top and the bottom of the sensors. After the initial contact
heart rate signal is detected, the controller will enter a validation phase requiring a good heart beat
signal within 10 to 15 seconds, or until the system acquires a valid signal. During the validation phase
the controller will not recognize telemetry heart rate signals. The controller will display a heart icon.
If, during exercise, the heart rate displayed is erratic, it may be helpful to remove your hands from
the handles, wipe them and place them back on the handles. In all programs, the heart rate is shown
automatically in the display window the first time the sensors are touched.
HEART RATE PRIORITY
Both contact heart rate and telemetry (e.g., Polar®) heart rate signal detection are available. The default
priority of heart rate input is “EITHER INPUT.”
34
Page 35
HEART RATE PRIORITY
Locked/Non-Locked Heart Rate Signal Options
The “EITHER INPUT” option means that the heart rate source signal is not fixed during the workout
session (if the signal is lost either input will be valid). If the “LOCKED INPUTS” option is selected then
the heart rate source signal is locked on the first detected signal during the workout. To set a heart rate
signal input, or to turn off the heart rate option all together, perform the following steps:
1. On the console keypad, press [Level: UP], [3], [ENTER]. At this point the screen will display
“CUSTOMIZE”. Use the [Level: UP] key until “HR INPUTS” appears, then press [ENTER] to select th
option.
2. There are five options to handle heart rate input signals. Press the [Level: UP] and [Level: DOWN]
keys to scroll through the options until you find the option that you want. Press the [ENTER] key to
select that option.
The options are as follows:
LOCKED INPUTS —allows either telemetry or contact heart rate signals to be detected. Once the console
has detected a valid input signal it will lock out the opposite type of signal for the duration of the workout
session. For example, if you start out using contact heart rate then you are limited to using only contact
heart rate during your workout session, even if the signal is lost while performing the workout, and viceversa.
EITHER INPUT —allows either telemetry or contact heart rate signals to be detected. Does not lock out a
particular input signal for the entire workout. This option will detect either input signal during a workout
session, but only one at a time, and only until the other signal terminates.
TELEMETRY ONLY —locks out contact heart rate signals and will only detect telemetry signals.
HAND ONLY —locks out telemetry signals and will only detect contact heart rate signals.
BOTH HR OFF —turns off the ability to detect any heart rate signal. Used in rare situations where there is
excessive interference with the heart rate signals. During workouts where heart rate is necessary, such
as the HR Zone Trainer and the Fitness Test, the console will pick up telemetry heart rate signals so that
the programs are not disabled.
HAND HR PGRM OFF —means that the heart rate control programs require a telemetry strap to work.
No single fitness program is suitable for all. All fitness programs should be designed by fitness
professionals who are trained to tailor the program to the individual goals and fitness levels of each
client. The following information on exercise intensity, duration, and frequency is based on averages
and is included here only as a guideline for use by fitness professionals. Programs should be altered for
comfort and safety when necessary.
Nautilus® Commercial Series Bike Owner’s Manual
35
Page 36
EXERCISE & FITNESS GUIDELINES
Exercise and Health
It is not a secret that lack of exercise is increasingly becoming a major health issue. Obesity is on the
rise, and being overweight can contribute to an increased risk in heart attack, diabetes, high blood
pressure and other life threatening illnesses.
Most people do not get enough activity during the day to make up for the time they spend at their desks,
driving their cars or sitting in front of their televisions. We have learned that exercising is not simply
something we must do to look good and have a great body. Exercise is a requirement for health, and
overall wellness, not to mention it can help you feel great!
The good news is that we are seeing more and more research that indicates we don’t have to work out
intensely to see the benefits. Sure, it is great if you can workout for 30-40 minutes at a time, five days a
week. But it is not essential. Shorter bouts of exercise can have a great effect (especially if you are just
starting out), and a little bit of exercise at a time is much better than none at all.
And what is really exciting is that research indicates that whether you are young or old, people who
workout at light to moderate intensities may have an easier time sticking to their exercise programs than
those people who work out harder and more often.
So, you do not need to be an athlete or a fitness ”die-hard” to benefit from exercise … you just need to
get started, work out at levels that are comfortable and enjoyable to you and stick with it!
Steps to Getting Started
Once you have made the commitment to start an exercise program, here are some suggestions that may
help you stay motivated.
The first step is the most difficult. Any new habit is difficult to establish at first, but it can be done. Be
patient, and plan to start slow and easy. Less is more when you are first starting out … don’t overdo it!
Get a physical exam. If you have been inactive for several years or new to an exercise program, be sure
to ask your doctor before beginning any exercise program. Especially if you are over 30, have health
problems or have a history of heart disease in your family.
Find an exercise buddy. Research has shown that starting an exercise program with someone can
increase your chances of sticking to it. If you have a buddy that is also starting a program, you can
encourage, motivate and challenge each other.
36
Page 37
EXERCISE & FITNESS GUIDELINES
Make fitness a part of your schedule. Include it in your daily planner just as you would any other
appointment. Plan ahead for the week so that you can be sure to fit it in. Even if you are pressed for time
one day, a little exercise is better than none at all. Do what you can to fit it in, even if you have less time
than you hoped for.
Use positive affirmations. Affirmations will help you program your subconscious to accept new beliefs.
Saying to yourself a couple of times a day, “I am living a healthier lifestyle by exercising several times
per week at home,” can help you stay on track.
Set goals. Setting goals can be helpful in keeping you motivated, but remember to keep them realistic.
Short-term and long-term goals can make this easier. How many days do you want to exercise this week?
How many workouts would you like to have done in 90 days or a year?
Components of Fitness
Over the past 25 years, many people have focused on walking, running, cycling, swimming and other types
of aerobic activity as their only means of exercise.
However, we have learned that two other components of fitness are just as important. These other two
components are muscle strength and flexibility. So in addition to having a strong heart and lungs, we also
need to be able to pick up a full bag of groceries and tie our shoes without having to sit down.
When developing a fitness program, it is only appropriate that you develop all three components in order
to achieve balanced overall fitness. Let’s take a look at all three components:
Cardiovascular fitness is training the heart and lungs to be stronger and deliver more oxygen throughout
your body with less effort. It can help reduce the risk of heart disease, and help you manage your
weight. It is the cornerstone of fitness, and can be achieved in many ways such as using a Nautilus bike,
walking or running on the treadmill or outdoors, climbing stairs, cycling, using a StairMaster® stepper or
swimming in the pool or ocean.
For many years, it was suggested that moderate level cardiovascular activity (activities that make you
sweat and breathe and a moderate pace) should be done 3 – 4 days a week for 15 – 45 minutes at a time.
It is now recommended that you attempt to do some cardiovascular activity EVERY day, if possible.
The good news is that the cardiovascular activity does not need to be moderately intensive everyday, nor
does it need to be sustained for 15 – 45 minutes at a time.
So while it is ideal to challenge your heart and lungs by doing something like a strong power walk every
other day for 15 – 45 minutes, it is more important to make sure you do at least a little bit of cardiovascular
activity every day, even if you don’t do it for very long or very intensely.
Nautilus® Commercial Series Bike Owner’s Manual
37
Page 38
EXERCISE & FITNESS GUIDELINES
For example, you might try using a Nautilus® bike for a scheduled, moderate level workout for 20 – 30
minutes on Monday, Wednesday, Friday and Sunday (see the intensity monitoring section for further
details on how hard to workout). On the other days, you might try going for a leisurely stroll 10 minutes in
the morning and in the evening (or whenever you can fit it in).
Whatever you do, just make sure you get your body moving, and your heart and lungs pumping for some
period of time every day.
Muscular Strength is training your muscles to remain strong using resistance such as Nautilus
®
strength
machines, dumbbells, elastic tubing or your body weight. In the past decade, we have learned that
building or maintaining muscular strength is extremely important for a balanced fitness program. And it is
especially important as we get older.
We have learned through a variety of studies that those individuals who just train aerobically (without
strength training) do maintain their cardiovascular endurance over the years, but they generally lose
lean muscle mass as they get older. However, those individuals who combine strength training and
cardiovascular training can maintain their lean body mass as they get older. What this means is that if
you just do cardiovascular activity, your body will naturally lose muscle mass as you get older, and that
means that you will actually get “fatter” as you age, unless you incorporate strength training.
We have also learned that consistent strength training helps maintain bone and muscle mass as we get
older. For women, strength training (along with cardiovascular training) may also protect against postmenopausal bone loss and osteoporosis in their later years.
And strength training is not complicated. It is recommended that you do 8 – 12 repetitions of 8 – 10 major
muscle groups at least 2 days a week. However, you don’t have to do all these exercises at once. You
can break them up into shorter workouts throughout the day. For example, you can do just upper body
exercises in the morning, and your lower body exercises in the evening. Or, you can alternate strength
exercises with cardiovascular exercise (often known as circuit training) by switching back and forth
every couple of minutes.
Flexibility is being able to bend, reach, twist and turn with comfort and ease as we perform daily tasks,
play or exercise. It is perhaps the most ignored component of fitness, but certainly the easiest one to
incorporate into our daily lives because it can be done anywhere and almost at any time.
To maintain your flexibility, you simply need to stretch. This could be as simple as reaching for your
toes, or reaching overhead when you wake up in the morning. Or maybe you enjoy it so much that you
would be interested in trying the Nautilus
your strength training workouts by stretching the muscles you have used immediately after you have
completed your exercise set.
Like cardiovascular training, it is recommended that you stretch every day. However, you do not need
to create a formalized program. You can simply make sure that you stretch your major muscle groups
38
®
yoga workout video. You can even incorporate stretching into
Page 39
EXERCISE & FITNESS GUIDELINES
throughout the day. Make sure you include your thighs, calves, hamstrings, back, chest, neck and
shoulders.
Do what feels good, but also remember to mix it up. Don’t just do traditional “reach and hold” stretches.
Also, try gently moving through a range of motion that is comfortable to you. For example, you don’t have
to stretch your neck simply by pulling on your head with your hand. You can also just rotate the neck
slowly around and look side to side.
Nutrition
Of course, every good health and fitness program will also include a good nutrition component. Good
nutrition is likely the most important factor in maintaining ideal body weight and managing weight loss.
There are a variety of schools of thought regarding which nutrition program, diet or eating plan is best.
While we do not promote or endorse any particular one, here are some things to consider that will help
you get on the road to a healthy diet:
Understand Caloric balance. How many Calories you intake, and how many Calories you burn off will
determine whether you will gain or lose weight day to day. It is impossible to achieve weight loss without
some sort of “Caloric deficit” that can be obtained through cutting Calories, or burning off more than you
take in. The wisest approach is to do a little of both – cutting Calories and exercising. It is the only proven
long-term weight management program that is successful. You should ensure that you are consuming at
least 1,200 Calories per day total. A total weight loss of no more than 2 lbs. per week is recommended for
long-term weight management.
Eat a variety of foods. Regardless of your eating plan, you should be sure to include a variety of foods in
your diet, maximizing your intake of fruits and vegetables whenever possible. Colorful meals and snacks
that are divided amongst the 4 food groups will ensure that you obtain the nutrients needed for your body
to function at optimal levels. Any diet that focuses on just one food group source or processed foods
can be unhealthy in the long run, and should be avoided. Don’t focus too much on any particular meal or
snack, but rather on your overall intake of a variety of different foods during any given day.
Drink water. Our bodies are made up of over 70% water, and most of us don’t drink enough. Carry water
with you everywhere you go, and drink as often as you can. This helps the body function at optimum
levels, and can significantly help with weight management.
Eat more often and be mindful of your portions. Research has shown that it can be helpful to eat smaller
meals more often versus 3 larger meals a day if you are looking to promote healthy weight maintenance
or weight loss. And we have discovered that many portions we eat are much larger than necessary, and
can be laden with Calories. So, try snacking more and not eating so many large meals, and share your
snacks or food with others (or break your portions in half) to help manage your Caloric intake.
Nautilus® Commercial Series Bike Owner’s Manual
39
Page 40
EXERCISE & FITNESS GUIDELINES
Monitoring Your Intensity
When you are doing cardiovascular workouts, it is important that you work at the appropriate intensities
when you are first starting out. It is also important that you workout at a variety of intensities after you
have built a fitness base.
Research in recent years has indicated that one of the best ways to monitor your cardiovascular intensity
is to pay close attention to how you are feeling when you workout. Most individuals can do a very good
job of choosing the correct intensities if they simply categorize how they feel into one of four intensity
“zones.”
These zones could be described the following ways:
ZoneDescription
1• Easy
• Warm-up
• Cool-down
2• Challenging, but comfortable
• Steady endurance pace
3• Challenging, and slightly uncomfortable
• Race pace
• Borderline out of breath
4• Breathless
• Not maximum, but winded
• Can’t keep the pace for very long
When you are first starting out, you should exclusively work in the Zone 1 and Zone 2 intensities. After
a few weeks, you can occasionally incorporate Zone 3 and Zone 4 intensities for short periods of time.
Remember, when you begin to incorporate Zone 3 and Zone 4 intensities, you will find that you will likely
have to drop down to Zone 1 intensities shortly thereafter as brief recovery periods.
For variety, you can spend a little bit of time in each of the four Zones during one workout, and then spend
your time in just one Zone during the next workout.
Prenatal woman should always remain at Zone 1 and Zone 2 intensities, and anyone unaware of their
current medical condition should also avoid Zone 3 and Zone 4 without prior clearance from their doctor.
These Zones can be translated into target heart rate numbers if your fitness product has a grip or
telemetric heart rate counter. Research has shown the best way to do this is not to establish heart rate
numbers based upon age, but rather based upon how you feel.
40
Page 41
EXERCISE & FITNESS GUIDELINES
The following chart will allow you to log your heart rate numbers based upon how you feel when working
out. Simply log the heart rate numbers you find when you feel you are working at each of the specific
intensities.
ZoneDescription of
Workout Intensity
1• Easy
• Warm-up
• Cool-down
2• Challenging, but comfortable
• Steady endurance pace
3• Challenging, and uncomfortable
• Race pace
• Borderline out of breath
4• Breathless
• Not maximum, but winded
• Can’t keep the pace for very long
Approximate %
of Maximum
Heart Rate
50% – 65%
65% – 75%
75% – 85%
85% – 90%
Log Your
Heart Rate
Enter the heart rate
you get when you are
working in Zone 1
Enter the heart rate
you get when you are
working in Zone 2
Enter the heart rate
you get when you are
working in Zone 3
Enter the heart rate
you get when you are
working in Zone 4
Your
Heart Rate
As you get in better shape, the heart rate number you obtain for each zone will get higher and higher,
which means your heart is able to handle higher intensities. Or you may find that your numbers don’t
change, but you are able to stay in Zone 3 and Zone 4 longer than you used to.
Don’t get too attached to any specific number or target heart rate. If you train properly, you will notice
numbers that used to be difficult have now become easier. You will also notice that if you are sick or overtired, you may find that numbers that usually feel fairly easy are one day much harder, and it is a good
sign to take a break. If you notice that numbers that are usually very challenging are one day fairly easy,
then it is a good time to push yourself.
Listening to your body, and using your heart rate numbers (when available) will enable you to keep track
of your intensity and see your progress as you train.
Beating the dropout odds
The Surgeon General’s Report on Physical Activity and Health summarizes a few main points:
1. Regular physical activity offers substantial improvements in health and well-being for a majority of
Americans.
2. If you exercise regularly, you’ll reduce your risk of heart attack, cancer, diabetes, high blood
pressure, osteoporosis and even the common cold.
3. Regular exercise, regardless of the intensity, can help you control stress, sleep problems and
depression.
Nautilus® Commercial Series Bike Owner’s Manual
41
Page 42
EXERCISE & FITNESS GUIDELINES
The benefits of exercise and activity are AMAZING! And yet, only 22 percent of Americans engage in
exercise for 20 minutes a day. And even among individuals who begin exercise programs, the dropout
rate is about 50 percent.
So, how do you beat these odds? The answer appears to be in how your start and maintain your exercise
program as well as how you create a habit of exercise.
Why are you starting an exercise program? For most individuals, it is to lose weight and look better,
which are great reasons. However, since changes in your body shape and size can be gradual, and won’t
happen overnight, it is important to focus on other benefits so that you will remain motivated.
Thrive on the energy that exercise gives you. Watch your health risks scores go down. Pay attention to
how much easier everyday activity is. Notice how much better you are sleeping. These kinds of additional
benefits will continue to keep you motivated if you make them just as important to you as weight loss.
Additionally, try not to view exercise as punishment. Look at it as an investment in your health. If you don’t
feel motivated to workout one day, think of something that is appealing to you that is active, and change
your workout. Try not to let your workout become routine or mundane, and always remember that some
exercise is better than none at all. So, if you feel you are not motivated to continue, stop your workout
early, or skip a day. It just might be the thing you need to get you excited about your next workout.
Possibly the most important thing is to keep progressing your exercise program slowly. Big increases
in time or intensity can set you up for injury, and cause you to drop out. Unless you are a world-class
athlete, there is no reason to workout at world-class levels. Remember to give yourself some days off and
get proper rest.
Finally, try to anticipate lapses. If you are traveling, or your schedule is becoming busier, and you are
fearful you may get off track, try planning ahead. For example, book a hotel that has a workout facility or
change up your workout so that you keep your interest high and your boredom low. The bottom line is you
must be creative and innovative to keep up your fitness program. With some imagination and planning, it
is easy to do.
Suggested Reading:
The Complete Home Fitness Handbook by Edmund Burke, Human Kinetics Publisher.
Full Body Flexibility by Jay Blahnik, Human Kinetics Publisher.
Building Strength and Stamina by Wayne Wescott, PhD, Human Kinetics Publisher.
Cross-Training for Dummies by Tony Ryan and Martica Heaner, For Dummies Publisher.
42
Page 43
CONSOLE CODES
CONSOLE CODES
There are 4 groups of console codes as follows: Customization (codes starting with 2 or 3), Machine Status
(codes starting with 4), Diagnostic (codes starting with 6 or 7), and Configuration (codes starting with 8). Each
group of codes is defined below. To access these console codes and the options within each group, follow the
instructions for each section.
Customizing the U916 and R916
You can customize several parameters on the U916 and R916 to conform to your individual requirements, including
changing the workout default values and setting custom parameters such as time limits, changing screen
contrast, changing language, and changing units.
To change the workout default values:
1. Press [Level: UP], [2], [ENTER]. The console will display “DEFAULTS”.
2. Press [Level: UP] or [Level: DOWN] to scan through the default choices. Select the option you want to
change by pressing [ENTER]. Then use the [Level: UP] or [Level: DOWN] keys or the numerical keypad to
change the value for the selected option. Press [ENTER] to accept the choice for that option.
The Defaults options are as follows:
Change default weight
Use the numeric keypad or [Level: UP] or [Level: DOWN] keys to change the desired default weight for your
facility. Press [ENTER] to accept the new value.
Change default workout time
Use the numeric keypad or [Level: UP] or [Level: DOWN] keys to change the desired default workout time
between 10 and 99 minutes. Press [ENTER] to accept the new value.
Change default age
Use the numeric keypad or [Level: UP] or [Level: DOWN] keys to change the desired default age used to
calculate target heart rate. Valid age range is between 10 and 99. Press [ENTER] to accept the new value.
Change default % Target HR
Use the numeric keypad or [Level: UP] or [Level: DOWN] keys to change the desired target HR % value based
on maximum HR. This is used to calculate the target heart rate value based on the % of maximum HR. Valid
target HR % is between 40 and 90%. Press [ENTER] to accept the new value.
Nautilus® Commercial Series Bike Owner’s Manual
43
Page 44
CONSOLE CODES
Change default Starting Level
Use the numeric keypad or [Level: UP] or [Level: DOWN] keys to change the desired default level between 1
and 20. Press [ENTER] to accept the new value.
To customize the console for your use:
1. Press [Level: UP], [3], [ENTER]. The console will display “CUSTOMIZE.”
2. Press [Level: UP] or [Level: DOWN] to scan through the customize choices. Select the option you want to
change by pressing [ENTER]. Then, use the [Level: UP] or [Level: DOWN] keys or the numerical keypad to
change the value for the selected option. Press [ENTER] to accept the choice for that option.
The Customize options are as follows:
Cool Down
Use the [Level: UP] and [Level: DOWN] keys or the numeric keypad to enter the desired cool down time in
minutes. Press [ENTER] to select your option.
Select Stats
N/A
Clinical Mode
Displays the current status of Clinical Mode (ON when bike is plugged in, and OFF when bike is battery
powered). Note: When going from AC-powered to battery-powered, the status will not be updated until user
pedals a few strokes.
Max time limit
Use the numeric keypad to enter the desired time limit between 5 and 99 minutes. Press [ENTER] to accept
the new time limit. Press [0] and the display will read “TIME LIMIT OFF”.
Change units
Use the [Level: UP] and [Level: DOWN] keys to toggle between USA units and Metric units. Press [ENTER] to
select your option.
Choose the type of heart rate input
See Heart Rate Priority in the previous section for details of the choices.
Choose console language
Use the [Level: UP] and [Level: DOWN] keys to view the choices (English, German, French, Spanish, Italian,
Dutch, Swedish, Japanese). Press [ENTER] to select your option.
Adjust upper LCD screen contrast
Use the [Level: UP] and [Level: DOWN] keys to increase or decrease the contrast level of the upper LCD.
44
.
Page 45
CONSOLE CODES
Press [ENTER] to select your option.
Adjust lower LCD screen contrast
Use the [Level: UP] and [Level: DOWN] keys to increase or decrease the contrast level of the upper LCD.
Press [ENTER] to select your option.
Reset Defaults
This code will reset all exercise parameters to the factory defaults. Press [ENTER], to accept the default
values.
3. To exit “CUSTOMIZE”, press the [CLEAR] key.
Machine Status Codes
To view maintenance information such as the run time in hours, number of workouts and distance, as well a
machine type and software revision:
1. Press [Level: UP], [4], [ENTER]. The console will display “MACHINE STATUS”
2. Press [Level: UP] or [Level: DOWN] to scan through the choices to view. Press [CLEAR] to exit the machine
status codes.
The machine status options are as follows:
Machine run time in hours
Display the machine run time in hours. The console will display “RUN HOURS #####”.
Number of workouts
Display the number of times a workout key has been pressed. The console will display “WORKOUTS ####”.
Distance traveled
Display the total distance traveled in miles (or kms if console is set to Metric units) . The console will display
“DISTANCE #####”.
Software revision
Display the console software revision number. The console will display “CONS 41375-###”.
Machine type
Display the machine type the console is currently configured to. The console will display “U/R916” or other
machine type.
Nautilus® Commercial Series Bike Owner’s Manual
45
Page 46
CONSOLE CODES
Machine run time in hours since last cleared (used for maintenance)
Display the machine run time since last cleared. The console will display “MAINT HOURS #####”. This will
provide the number of hours between service or maintenance calls. The machine run time is reset to zero in
the following Diagnostics section.
3. To exit “MACHINE STATUS”, press the [CLEAR] key.
Diagnostic Codes
Diagnostic codes are used to test various components of the machine such as the display, keyboard, serial port,
alternator, and tachometer, as well as viewing the error log information and resetting the time between service or
maintenance calls. To run diagnostics and view diagnostic information:
1. Press [Level: UP], [6], [ENTER]. The console will display “DIAGNOSTICS”
2. Press [Level: UP] or [Level: DOWN] to scan through the choices. Select the option you want to view by
pressing [ENTER].
The diagnostic options are as follows:
Test display
To test the LCD display, press [ENTER] when the message, “DISPLAY TEST” is displayed. The console
screen alternates turning on all LCD segments and a representative program screen. Verify that all LCD
segments turn on.
Test keyboard
To test all the keys on the keyboard, press [ENTER] when the message, “KEY TEST” is displayed. Then, press
any key on the keyboard and that key’s name will be displayed in the text line. Press [CLEAR] as the last key
to exit this test.
Test serial port
To test the serial port, press [ENTER] when the message, “SERIAL TESTS” is displayed. This test performs a
serial loop back test. Select the CSAFE RS-232 selection. You will need a loop-back test cable inserted into
the appropriate connector port to successfully run this test. (To order a test cable, contact your Nautilus
Service Representative.) Console will display either “PASS” or “FAIL”.
Test alternator
To test the machine’s alternator, press [ENTER] when the message, “ALT TEST” is displayed. This test
verifies the alternator field routines through the console. Position yourself on the machine and press and hold
[Level: UP] for “field on”. After exercising briefly you should build up resistance. For “field off”, press [Level:
DWN].
46
Page 47
CONSOLE CODES
Test tach response
To test the machine’s tachometer, press [ENTER] when the message, “TACH TEST” is displayed. Start
exercising on the machine. The console should regulate the alternator resistance based on the tach signal
to maintain approximately 2,000 RPMs while you are exercising. If not, there is a possible problem in the AC
tap or field circuit. Check the alternator, the AC tap wire, the field wire, the diode, the terminal posts, and the
main cable.
I/O Test
Press [ENTER] when the message “I/O TEST” is displayed. The AUX and B+ values represent the current
and voltage delivered from the alternator respectively. AUX is scaled by 1000 and B+ is scaled by 300. These
values will increase with the speed of the alternator (note that both values will reach 0 if the alternator is left
at rest). The “---” string is displayed at all times since the bikes do not require a magnetic key.
A Sensor B
N/A
3. To exit “DIAGNOSTICS”, press the [CLEAR] key.
To review the error log and reset the service timer:
1. Press [Level: UP], [7], [ENTER]. The console will display “MAINTENANCE LOG”.
2. Press [Level: UP] or [Level: DOWN] to scan through the choices. Select the option you want by pressing
[ENTER].
Error log
To display the machine’s error log, press [ENTER] when the message, “ERROR LOG”, is displayed. The
console will report various error messages in the display window. The total amount of errors will be displayed
in the upper right window. Note that only the highest priority reported error will be displayed. Errors are
handled in two ways. First, as a non-fatal “WARNING” which will display the text message but continue
system operation until you press the [CLEAR] key. The second way is a fatal “ERROR” which will stop the
exercise and return the system to an idle intensity state. The console will display the error text and not let
you restart the program unless power has been turned off and then back on. There are 16 error entries
available.
Reset service time
To reset the time between service or maintenance calls, press [ENTER] when the message, “MAINT HOURS”
is displayed. Press the [0] key, then [ENTER] to reset..
QA ID
N/A
3. To exit “MAINTENANCE LOG”, press the [CLEAR] key.
Nautilus® Commercial Series Bike Owner’s Manual
47
Page 48
MAINTENANCE INSTRUCTIONS
Configuration Codes
To change the machine type from Stepper, StepMill
display will read “CHANGE MACHINE”. Press (ENTER) to display the list of machines, then press [Level: UP] or
[Level: DOWN] to scan through the choices. Select the machine type you want by pressing [ENTER].
®
, Elliptical or U/R916, press [LEVEL: UP], [8], [ENTER]. The
Maintenance Records
For ease of maintenance the U916 and R916 console will keep track of hours, number of workouts, time between
last servicing, etc. You can quickly access any of the custom menus by pressing [LEVEL: UP], [4], [ENTER]. The
console will then display “MACHINE STATUS.” Use the [Level: UP] and [Level: DOWN] keys to scroll through the
options. For details, refer to the Machine Status Console Codes in the previous section.
Resetting the Maintenance Hour Timer
After each maintenance period reset the counter. Press [LEVEL: UP], [7], [ENTER]. Then use the Level keys to
scroll through the options. When “MAINT HOURS” is displayed, press [ENTER]. Press the [0] key, then press
[ENTER]. Press [CLEAR] to return to the opening screen.
Initial Service
Upon receiving your machine, use a soft, clean towel to wipe off the dust, which may have accumulated during
shipping. Your new machine will require minor assembly. Refer to the “Installation Instructions” section for
details.
Cleaning
1. DO NOT USE GLASS CLEANERS OR ANY OTHER HOUSEHOLD CLEANERS ON THE CONSOLE. Clean the
console daily with a water-dampened cloth and wipe dry after cleaning.
2. Clean the exterior of the machine daily using soap and water or a diluted, non-mineral based household
cleaner such as Fantastic®.
Inspection
1. Frame: Inspect the frame for any rust, bubbling, or paint chips during the weekly cleaning. The salt in
perspiration can damage the unpainted surfaces. Repair the damaged area with a touch-up paint kit
purchased from Nautilus (call Customer Service for order information).
48
Page 49
MAINTENANCE INSTRUCTIONS
Checking the Battery Charge
1. Using your multimeter, touch the red lead to the positive terminal of the battery and the black lead to the
negative terminal.
2. If the voltage level is less than 6.1 VDC, charge the battery.
Recharging the Battery Back-Up
The Commercial Series U916 and R916 bikes are both self-powered (cordless) with a rechargeable battery backup. Typically, the bike can be operated without plugging in the battery charger. If, however, the console flickers
during operation or the console display does not light up while using the machine, then use the battery charger to
recharge the battery back-up.
The battery charger is supplied with the unit and plugs into a standard 115 volt, 15 amp outlet, or a 220 volt, 15
amp outlet. (All major voltage plugs are available.) The plug-in for the battery
charger is located in the front of the machine at the base.
NOTE: If installing the optional LCD Monitor, refer to the NV915 installation
manual at this time.
Plug the wall pack battery charger into the connector and charge the battery
for approximately 24 hours and then recheck it. It is okay to use the machine
while the battery charger is connected.
The console will power on as user starts to pedal machine, and will stay lit for
up to 60 seconds in pause mode. The console will power off after 60 seconds
of stopping exercise.
Battery charger plug-in
Battery Disposal
When ordering new batteries, you will need to properly dispose of (recycle) your old lead-acid batteries. Most
federal and state regulations require lead-acid batteries to be recycled. Do not throw away old batteries. Lead
is a toxic heavy metal, hazardous to living organisms. Disposal instructions and a list of recycling centers are
tabulated in the Appendix. If you have questions, contact the Customer Service Department at 800-628-8458
(North America) or +41-26-460-77-77 (International office).
Nautilus® Commercial Series Bike Owner’s Manual
49
Page 50
LIMITED WARRANTY
Commercial Market Warranty Information
All Nautilus® exercise products are warranted to the
commercial market purchaser to be free from defects in
materials and workmanship. Warranty coverage valid to
the original purchaser only and proof of the purchase will
be required. Any product sold or placed in an application
not recommended by Nautilus will void any warranty
coverage set forth by Nautilus warranty policies and
procedures.
Time Period
15 Years - Frame
3 Years - Mechanical and electrical parts
1 Year - Labor
1 Year - Wear items
Warranty terms may differ outside the USA.
amount of the purchase price of the exercise product
in question. Some states do not permit the exclusion
or limitation of implied warranties or incidental or
consequential damages, so the preceding limitations and
exclusions may not apply to you.
Procedures
Warranty service will in most cases be performed by an
authorized Nautilus Fitness Dealer or Service Technician.
The original purchaser must provide proof of purchase,
Service calls and/or transportation to and from the
Nautilus Dealer is the responsibility of the purchaser.
1. Nautilus will have the option to repair or replace any
exercise product, which requires service.
2. Nautilus will replace any equipment frame that is
structurally defective with a new frame or replace the
unit with a unit of equal value.
What this warranty does not cover
1. Users weighing more than 400 lbs (182 kg).
2. Any damage, failure or loss caused by accident,
misuse, neglect, abuse, improper assembly, improper
maintenance or failure follow instructions or warnings
in Owner’s Manual.
3. Use of product in a manner or environment for which it
was not designed.
Limitations
The foregoing warranties are in lieu of and exclude all
other warranties not expressly set forth herein, whether
expressed or implied by operation of law or otherwise,
including, but not limited to, warranties of merchantability
or fitness for a particular purpose. Nautilus shall in no
event be liable for incidental or consequential losses,
damages or expenses in connection with its exercise
products. Nautilus’ liability hereunder is expressly limited
to the replacement of goods not complying with this
warranty or, at Nautilus’ election, to the replacement
3. Nautilus is not responsible for dealer labor charges for
the component changeovers completed after the labor
related warranty period stated herein.
4. If you elect to repair an exercise product or part
yourself, using the services of someone other than
an authorized Nautilus Fitness Dealer or Service
Technician, or use a replacement part not supplied
by Nautilus, Nautilus shall not be liable for any cost,
damage, failure or loss caused by the use of such
unauthorized service or parts.
Page 51
IMPORTANT CONTACT NUMBERS
If you need assistance, please have both the serial number of your machine and the date of purchase available when you
contact the appropriate Nautilus office listed below.
WORLDWIDE CUSTOMER SERVICE
• NORTH AMERICA OFFICE
Nautilus, Inc.
World Headquarters
16400 S.E. Nautilus Drive
Vancouver, Washington, USA 98683
Phone: 800-NAUTILUS (628-8458)
Fax: 800-686-6466
e-mail: cstech@ nautilus.com
• NAUTILUS INNOVATION CENTER
Nautilus, Inc.
1886 Prairie Way
Louisville, Colorado, USA 80027
Phone: 800-864-1270
Fax: 800-898-9410
• CORPORATE HEADQUARTERS
Nautilus, Inc.
World Headquarters
16400 S.E. Nautilus Drive
Vancouver, Washington, USA 98683
Phone: 800-NAUTILUS
INTERNATIONAL CUSTOMER SERVICE
• INTERNATIONAL OFFICE
Nautilus International S.A.
Rue Jean Prouvé 6
1762 Givisiez / Switzerland
Tel: +41-26-460-77-77
Fax: +41-26-460-77-70
E-mail: technics@nautilus.com
INTERNATIONAL OFFICES:
• SWITZERLAND OFFICE
Nautilus Switzerland S.A.
Tel: +41-26-460-77-66
Fax: +41-26-460-77-60
• GERMANY and AUSTRIA OFFICE
Nautilus GmbH
Tel: +49-2204-610-27
Fax: +49-2204-628-90
• ITALY OFFICE
Nautilus Italy s.r.l.
Tel: +39-51-664-62-01
Fax: +39-51-664-74-61
• UNITED KINGDOM OFFICE
Nautilus UK Ltd.
Tel: +44-1908-267-345
Fax: +44-1908-267-346
• CHINA OFFICE
Nautilus Representative Of fice
Tel: +86-21-523-707-00
Fax: +86-21-523-707-09
Nautilus® Commercial Series Bike Owner’s Manual
51
Page 52
Model U916
Model R916
For more information about our Commercial Series exercise machines or other Nautilus®