SR Suntour HESC User manual

1
EU regulation / Ver. 20190130
E-Bike components
User manual
Rear motor system:
ØR250-OR142 rear motor
ØATS sensor crank
ØLED display
ØBattery: ST-410Wh

2
Important information
lContact the dealer where the bike was
purchased for the information of
installation and adjustment of the products
that are not found in the user manual.
lDo not dis-assemble or alter the products.
lUse the products according to the local
laws and regulations.
For safety, make sure to read this
user manual thoroughly before
using the system.
lUse the SR SUNTOUR specified charger and
observe the specified charging conditions
when charging the specified battery. It may
cause overheating, bursting or ignition of
the battery if it’s not followed.
Important safety information
In case if any parts need to be replaced,
contact a dealer or the place where the bike
was purchased.
Make sure to observe the following notice in
order to avoid burns or injury from fluid
leakage, overheating, fire or explosions.
Making sure for Safety
DANGER
Handling the battery
lDo not deform, modify, disassemble or
apply solder directly to the battery. It may
cause leakage, overheating, bursting or
ignition of battery if it’s not followed.
lDo not leave the battery near sources of
heat such as heaters or fire. Do not heat
the battery or throw it into a fire. It may
cause bursting or ignition or the battery if
it’s not followed.
lDo not put the battery in the condition such
as strong shock or throw it. If this is not
observed, overheating, bursting or fire may
occur.
lDo not place the battery into fresh water or
sea/salt water and do not allow the battery
terminals/connectors to get wet. It may
cause overheating, bursting or ignition of
the battery if it’s not followed.
WARNING
How to ride more safely
lWhile riding,, do not focus too much
attention on the display, as this can lead to
accidents.
lMake sure that the wheels are securely
attached to the bike before start riding. If
the wheels are not securely attached, the
bike may fall over, causing severe damage
and possible serious injury.
lWhen riding a power-assisted bike, make
sure that you are completely familiar with
the starting characteristics of the bike
before riding it on roads with several
vehicles lanes and pedestrian footpaths. If
the bike starts off suddenly, accidents may
result.
lCheck to see if the lights are properly
working when riding at night.
Using the product safely
lBe sure to remove the battery before
performing wiring or installation work on
the bike. Otherwise there is a danger of
electric shock.
lWhen charging the battery while it is
mounted on the bike, do not move the bike.
The power plug of the battery charger may
come loose and not be fully inserted into
the electric outlet, resulting to the risk of
fire.
lWhen installing this product, make sure to
follow the instructions given in the user
manual. It is also recommended that the
genuine SR SUNTOUR parts are only used at
such times. If nuts and bolts are left
loosened or the products are damaged, the
bike may fall over suddenly and cause
serious injury.
lDo not disassemble the product.
Disassembling may cause injury to persons.
lAfter reading the user manual carefully,
keep it in a safe place for later reference.

3
How to handle the battery
lDo not leave the battery in a place exposed to
direct sunlight, inside a vehicle on a hot day, or
other hot places. This may result in battery
leakage.
lIn case of any leaked fluid gets on your skin or
clothes, wash it off immediately with clean
water. The leaked fluid may damage your skin.
lStore the battery in a safe place out of the
reach of infants and pets.
lIn case of any malfunctions or other problems
occur, contact the place of purchase.
lNever attempt to modify the system by
yourself, as it may cause problems with system
operation.
How to handle the battery
lIn case if any liquid leaking from the battery gets
into your eyes, wash the affected area immediately
and clean thoroughly with clean water without
rubbing your eyes, and consult the medical advice
immediately. If this is not done, the battery liquid
may damage your eyes.
lDo not recharge the battery in places with high
humidity or out-doors. It may result in electric
shock if it’s not followed.
lDo not insert or remove the plug while it is wet. If it
is not observed, electric shocks may occur. If there
is water leaking out of the plug, dry it thoroughly
before inserting it.
lIf the battery doesn’t become fully charged after 6
hours of charging, un-plug the battery from the out-
let immediately to stop charging, then contact the
place of purchase. It may cause the overheating,
bursting or ignition of the battery if it’s not followed.
lDo not use the battery if there is any scratches or
other external damage found visibly. It may cause
overheating, bursting or problems with operation.
lThe operating temperature ranges for the battery
are shown as below. Do not use the battery in
temperatures outside these ranges. If the battery is
used or stored in temperatures outside these
ranges, it may cause fire, injury or problems with
operation.
1) During discharging:
-10℃-50 ℃/ 15℉-120 ℉
2) During charging:
0℃-40 ℃/ 30℉-105 ℉
CAUTION
To be sure the safe riding
lMake sure to follow the instructions in the user
manual for the bike, in order to ride safely.
Using the products safely
lMake sure to check the battery charger and
adaptor time to time, especially the cable, plug, and
case for any damage. If the charger or adaptor is
broken, do not use it until it has been repaired.
lThis product is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given
supervision or instruction concerning use of the
product by a person responsible for the safety.
lDo not allow children to play near the product.
NOTE
Using the product safely
lFor installing or adjusting of product, consult a
dealer.
lThe product is designed to be waterproof to
withstand wet weather riding conditions.
However, do not place them into water
deliberately.
lDo not clean the bike in a high pressure wash.
If water gets into any of the components,
operating problem or rusting may result.
lDo no turn the bike upside down. The display
or the remote switch may get damaged.
lTake the product carefully, and avoid
subjecting it to any strong shocks.
lAlthough the bike still functions as a regular
bike even when the battery is removed, the
light does not turn on if it is connected to the
electric power system. Be aware that using the
bike under these conditions will be considered
non-observance of the road traffic laws in
some countries.
lWhen charging the battery while it is mounted
on the bike, be careful with below points.
üWhen charging, make sure that there is no
water on the charging port or the charger plug.
üEnsure that the battery is locked into the
battery mount before charging.
üDo not remove the battery from the battery
mount while charging.
üDo not ride with the charger mounted.
üClose the charging port cap when not charging.

4
How to handle the battery
lWhen carrying the power-assisted bike in a car,
remove the battery from the bike and place the
bike on a stable surface in the car.
lBefore connecting the battery, make sure that
there is no water or dirt in the connector where the
battery will be connected.
lIt is recommended to use s genuine SR SUNTOUR
battery. If using a battery from another
manufacturer, make sure to carefully read the
instruction manual for the battery before use.
Battery key
lThe number which can be found on the battery key
is necessary when purchasing spare keys. Keep it in
a safe place. There is a space to enter the key
number inside of this user manual. Enter the key
number for safely and later reference.
Cleaning
lDo not use thinner or other solvents to clean any of
the products. As such substances may damage the
surfaces.
lWash the chainrings time to time in a neutral
detergent. In addition, cleaning the chain with
neutral detergent and lubricating it can be an
effective way of extending the useful life of the
chainring and the chain.
lUse an wet cloth, with the water well wrung out,
when cleaning the battery and/or plastic cover.
lFor any questions regarding handling and
maintenance, contact the place of purchase.
lProducts are not guaranteed against natural wear
and deterioration from normal use and aging.
Disposal information of battery
When disposing the battery, follow the local
regulations. If you are not sure, consult the place or
purchase or a bike dealer.

5
Operating temperature range during discharge
-10℃-50 ℃/ 15℉-120 ℉
Operating temperature range during charge
10℃-40 ℃/ 50℉-105 ℉
Storage temperature (battery)
-10℃-40 ℃/ 15℉-105 ℉
Humidity (storage)
up to 80%
Charing voltage
100V -240VAC
Charging time
Approx. 7 hours for 12Ah pack
Approx. 5 hours for 09 Ah pack
Battery type
Li-ion battery
Capacity
11600mAh (417.6Wh)
8700mAh (313.2Wh)
Nominal voltage
36VDC
Motor type
Rear wheel drive
Motor type
Brushless DC motor
Nominal motor power
250W
Maximum motor power
400W
Torque
60Nm
Display
HESC system overview

6
•Speed (mph)
•Error code
Main switch
Mode 
Assist up
Mode 
Assist down
Mode indication Light switch Lamp indicator
* no light on mode indication
0mph 6.2 9.3 15.5
Mode Mode indication
HIGH
MID
ECO

Push 
Push

Push

Push
2. Display for changing assist mode
Base screen display

7
Check display after
turning the system
on
Check if the number
on the screen shows
correctly after turning
on the system
HIGH
MID
ECO
Check assist modes
(Light on) (Light off)
Check light function
How to operate the LED display

8
WARNING
ØUse batteries and chargers only from SR SUNTOUR
with your bike. Use of other battery packs can
cause injury and involve a risk of fire. If you use
other battery packs, we will assume no liability or
warranties.
ØThe battery must not be charged or stored in direct
sunlight or in the vicinity of high temperatures.
ØAvoid to contact with metal objects (paper clips,
coins, keys, nails, screws, or other small metal
objects, as this may cause a short circuit. Shorts
caused in this way will invalidate any warranty
claims.
ØDo not open the battery pack. This could cause a
short circuit. Opening of the battery package will
invalidate any warranty claims.
ØDo not connect, or disconnect the battery
pack/charger with wet hands.
ØKeep the battery/charger out of reach of children
and animals.
ØDo not subject the battery or the charger to
physical shocks, e.g., by dropping. If fluid gets in
your eyes, seek medical advice. Fluid that leaks
from the battery pack may cause skin irritation or
burns.
ØDo not bend the charging cable. The cable must not
be rolled up while charging.
ØThe charger can be hot. Do not wrap cable around
the charger and place it on floor coverings such as
carpets, etc.
ØIf the battery is not fully charged after six hours,
disconnect it immediately from the output to stop
the charging process and contact your place of
purchase. This can lead to overheating, bursting, or
ignition of the battery.
Charging the battery
Charging port
LED
For safety this high energy density lithium-ion battery contains a sophisticated battery management system
(BMS). The BMS ensures safe charging and discharge, continuously monitoring each of the cells in the battery
individually. If the current drawn gets too high or the temperature of the battery is elevated, the BMS will
shut the battery down for safety.
If the battery shuts down there are two levels of reset, it may come back on after a press of the power button
on the battery. However if this does not reset you will have to remove the battery from the bike for a few
seconds before refitting it.
uIf the E-Bike is not in use, remove the battery and store it at a temperature between 0℃and 40℃in a dry
environment.
uDo not store the battery with low capacity for a longer period.
uFor long term storage, the battery should have a capacity of at least 40%.
uIt is recommended to always discharge the battery completely and then fully charge it.

When charging the battery alone
It is suggested to perform a complete discharge and recharge at every 3 months or after
using 40 charging cycles in order to make the battery life longer.
9
Step 1 Step 2
GREEN
The charger LED will change
to green when the battery is
fully charged.
Ensure that the
power plug is fully
inserted into the
wall outlet.
RED
The charger LED will change
to RED while the battery is
being charged.
Battery charging indication

-80%
79% -70%
69% -60%
59% -
10
Charging alternatives
On the bike Off the bike
Battery state of health (SOH)
Press the battery power button for 5 seconds. One of the following patterns of the LEDs will be
displayed showing the remaining capacity of the battery -Battery State Of Health (SOH).
Lighting
No light
Blinking (lighting: 750msec / no light: 250msec

1000 cycles -
900 –999 cycles
800 –899 cycles
700 -799 cycles
600 -699 cycles
500 -599 cycles
400 -499 cycles
300 -399 cycles
200 -299 cycles
100 -199 cycles
0 -99 cycles
11
Battery charging cycle status
Lighting
No light
Blinking (lighting: 500msec / no light: 500msec
Press the battery power button for 10 seconds. One of the following patterns of the LEDs will
be displayed showing the battery charging cycle status. (display time for 4 seconds)

12
Inserting the battery
Removing the battery
The number located on the battery key is
required when purchasing replacement
keys. Write it down in the box below and
store it in a safe place.
The battery must be inserted
until hearing the “click” sound.
Turn off
the power
button

13
Insert the battery
and push the
battery ON/OFF
button
Press power
button on
display
Select
mode
Start
pedaling
Switching the system ON
Note:
If the battery is not used for
24 hours or longer, it will
automatically go into deep
sleep mode. In that case,
press the power button on
the battery for 3 seconds.
Main switch
Mode 
Assist up
Mode 
Assist down
Mode indication
Riding the E-bike

14
Battery state of charge (SOC)
Factors which affect the range
The above figures are based on a speed of 12.5mph or 20 km/h on a level road at 15℃–20℃.
The range is influenced by many factors:
ØWeight of the rider
ØWeight of the luggage
ØSelection of path
ØPedaling behavior of the rider
ØState of maintenance of the E-Bike
ØType, condition and air pressure in the tires
ØRoad condition (up & down)
ØSpeed, average speed and changes in speed
ØTraffic flow, for example, stop and go
ØWind direction and wind speed
For information on using the battery, see pages 10-11 and 14-16. You'll also find information
on how to maintain capacity and extend duration.
5. Range
LED indication on the battery pack
Press the button for a few seconds, then the LED lamps will be displayed as shown here.
9.9% –0%
24.9% –10%
49.9% –25%
74.9% –50%
100% –75%
Lighting
No light
Blinking (lighting: 500msec / no light: 500msec
Note:
When the battery charge level becomes
less than 5%. The output power will be
reduced.
HIGH
MID
30 miles 62 miles
50 km 100 km
ECO

15
Turning on,
by pushing
for 0.5 sec
Turning off,
by pushing
for 0.5 sec
System is automatically switched
off in 10 minutes of non-use.
Note:
If the battery is not used for
24 hours or longer, it will
automatically go into deep
sleep mode. In that case,
press the power button on
the battery for 3 seconds.
Switching the bike ON/OFF
üSwitching ON
üSwitching OFF
üAutomatic Switching OFF

16
Technical data
Nominal voltage: 6V
Output power: 3.0W
Power supply for external devices
via USB port. USB connector
enables to charge most devices
with a mini-USB port.
Note: Output: 5V DC 0.5A
Light button
WARNING
Keep the USB socket covered with
the rubber cap, when not in use. This
will help prevent water entry.

17
To r em o ve t h e r ea r wh e el
1. Cut the cable ties holding the
waterproof motor cable connector
under the non-drive side chain stay.
Dis-connect the two halves of the
connector. This requires some
‘wiggling’ of the connector to
overcome the sealing.
2. Loosen the motor fixing nuts by
turning counter-clockwise, using a
15 mm spanner, then remove the
wheel.
3. When refitting the wheel, ensure
that the motor stopper from the
motor to fit to the motor stopper
from the frame, then slide the axle
into the rear dropout slots.
4. Put the washers to the motor axle,
then tighten the motor fixing nuts
properly. Suggested tightening
torque is 40-45 Nm.
5. Reconnect the two halves of the
motor connector, making sure that
the arrows on both sides of
connectors are aligned.
6. Keep pushing both connectors until
feeling the click. Replace the jip-ties
to secure the motor cable
underneath the non-drive side of
chain stay.
To r e-insert the rear wheel
Motor fixing
nut & washer
Motor fixing
nut & washer

18
SR SUNTOUR-HESC System Error Codes
Error
code Problem Description Trouble shooting If problem still exists
E00
Controller communication
problem
Check the display connects to display cable, then
power
-on again
Replace controller or display or display
cable
E01
Controller over
-temperature
Let the controller cool down
Replace controller
E04
Bike lightning system
Check the lighting system of the bike
Replace lighting system or controller
E05
Controller Data failure
Remove the battery for 30 seconds, re
-mount,
then power
-on again
Replace controller
E21
Torque Sensor electrical
problem
Check the sensor cable contacts
Replace the sensor
E22
Torque Sensor mechanical
problem
Check the torque sensor mechanism for any
problems.
Replace the sensor
E31
Battery electric current sensor
error
Remove the battery for 30 seconds, re
-mount,
then power
-on again
Replace the controller
E32
Battery overcurrent error
Turn off the main switch and turn on.
Replace the controller or battery
E33
Battery communication error
Turn off the main switch and turn on.
Replace the battery cable or battery
E34
Battery voltage error
Please check that the battery is dedicated to the
system.
Replace battery
E35
Battery over
-temperature
error
Remove the battery and let it cool down. after
that, re
-mount, then power-on again
Replace battery
E41
Motor overheating problem
Let the motor cool down
Replace motor or motor cable
E42
Motor Sensor failure
Check the motor
-cable contacts to the motor
Replace the motor
-
cable. Change the
motor if it doesn't solve this error.
SR SUNTOUR HESC system has a
simple diagnostic function. In case
if an error code message code will
appear in the display window, turn
the system completely off and
then on. If the error message still
appears, contact your local dealer
for further assistance.
Error code shows up

Specifications are subject to change without prior notice.
Jan., 2019/EU
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SRSUNTOUR
HESC User manual
Customer support offices (Europe)
Company
SR SUNTOUR EUROPE GmbH
SR Suntour Düsseldorf GmbH
Sales, Customer support and
technical services
R&D and OEM support
Address
Riedstrasse
31, 83627
Warngau
, Germany
Rather Broich 38
40472 Düsseldorf
Germany
Tel
49
-(0)802-150-793-0
49(0)21120072599
Fax
49
-(0)802-150-793-29
E-
mail
service@srsuntour
-cycling.com