WY'EAST MEDICAL Denali 600 User manual

Page 1 of 18
52396 R00
SERVICE MANUAL
DENALI 600 PATIENT LIFT
Model No. 52300 & 52400

Page 2 of 18
52396 R00
CONTENTS
WARRANTY …………………………………………….. 3
HOW TO USE THIS MANUAL ………………………... 4
DEFINITIONS …………………………………………… 4
PRODUCT DESCRIPTION & SPECIFICATIONS ….. 5
MECHANICAL SYSTEM ………………………………. 7
ELECTRICAL SYSTEM ……………………………….. 8
MAITENANCE ………………………………………….. 9
FAULT INDICATIONS & TROUBLESHOOTING ….. 10
LIMIT SWITCH ADJUSTMENTS …………………….. 11
CASTER REPLACEMENT ……………………………. 13
DRIVE WHEEL REPLACEMENT …………………….. 13
SLING BAR REPLACEMENT ………………………… 14
LIFT STRAP REPLACEMENT ………………………... 14
LIFT STRAP ADJUSTMENT ………………………….. 16
REPLACEMENT PARTS ………………………………. 17
RETURNING ITEMS ……………………………………. 17
CONTACT INFORMATION ……………………………. 18

Page 3 of 18
52396 R00
WARRANTY
Wy’East Medical Corporation warrants to the original user that the Denali 600 Patient Lift manufactured by
the company is free from defects in material and workmanship under normal use and service. The term of
warranty from the date of purchase/shipment is 2 years on the mechanical lift components, 1 year on the
electronic components, and 90 days for the battery. During this term Wy’East will provide to the user
replacement components or repaired components
In order to initiate a warranty claim the original user must provide prompt notice to Wy’East Medical
Corporation within the applicable warranty period specifying the nature of the claim. Wy’East will issue
instructions as to the procedure to follow. Wy’East reserves the right to confirm the existence of any
claimed defect and to determine whether any damage was caused by neglect, misuse, unauthorized
alteration or failure to follow maintenance instructions. With respect to a claim covered by this warranty,
the defective part will be replaced or repaired at no charge, provided the defective part is returned to
Wy’East Medical. The user has the responsibility for shipping charges and installation. Assistance is
available by calling [phone] in Oregon. This is the exclusive remedy for a claim under this warranty
and in no event shall Wy’East be liable for consequential damages. THIS WARRANTY IS IN LIEU OF ALL
OTHER WARRANTIES EXPRESSED OR IMPLIED.
This warranty applies to the Wy’East Denali 600 Patient Lift only.
For questions or information regarding other Wy’East products, contact:
Wy’East Medical Corporation
P.O. Box 1625
Clackamas, Oregon, USA
Telephone: [phone]
[phone]
FAX: [phone]
www.wyeastmedical.com
[e-mail]

Page 4 of 18
52396 R00
Consistent with our policy of continuing product improvement, WY’EAST MEDICAL CORPORATION reserves the
right to change these instructions without notice or obligation.
INTRODUCTION
HOW TO USE THIS MANUAL
This manual is designed to provide instruction for service of the Denali 600 Patient Lift. Read it thoroughly before
servicing the lift. Keep the manual for future reference and for new members of your staff.
DO NOT ATTEMPT TO SERVICE EQUIPMENT WITHOUT UNDERSTANDING THIS MANUAL
Refer to the OPERATOR’S MANUAL and the BIO MED/CLINICAL ENGINEERING CHECKLIST for additional
information.
If anything is not completely understood please contact Wy’East Medical for more details. Failure to comply with
cautions, warnings and instructions in this manual may result in injury.
Items or situations not covered in this manual may require service at the factory or by a Wy’East Medical qualified
technician. Contact Wy’East Medical for such services.
Images or illustrations in this manual may differ from your Denali 600 and are provided for reference only.
Contents of this manual are subjected to change without prior notice to users.
DEFINITIONS
The words WARNING, CAUTION, and NOTE carry specific meanings and should be carefully reviewed.
WARNING: The personal safety of the patient or user may be involved. Disregarding this information could result
in injury to the patient or user.
CAUTION: These instructions point out special procedures or precautions that must be followed to avoid
damaging the Denali 600.
NOTE: This provides special information to make maintenance easier or important instructions more
clear.
MEANING OF SYMBOLS
Caution Important
Consult instructions for use
Do not step on surface

Page 5 of 18
52396 R00
PRODUCT DESCRIPTION & SPECIFICATIONS
Safe Working Load 600 lbs / 272 kg
DESCRIPTION
Sling bar
Lift arm
Manual lowering
Lift control handset
Control console
Drive control joystick
Console height adjustment
Battery charger
Powered emergency lowering
Emergency stop
Leg caster
Drive wheel
*IV pole mount
*Oxygen tank retainer
Battery
Wheel lock
Handlebars
*Note that some items shown here are optional
and may not be present on your Denali 600.
Device serial number label

Page 6 of 18
52396 R00
SPECIFICATIONS
Maximum Load 600 lbs / 272 kg
Unit Weight with Battery 220 lbs
Battery 15 Ah LiFePO4
Number of Lifts per Charge 200
Charge Time Quick - 2 hr
Full - 10 hr
Lifting Speed Unloaded 1.75 in/s
Leg Under Bed/Stretcher
Clearance 3.4” or 4.6”
Standard Door Width
Clearance 28”
Turning Diameter 53”
Driving Speed 1.4 mph
Lift
15% - 85% Intermittent Usage
Run 2 min Continuous
Off 18 min
Drive
50% - 50% Intermittent Usage
Run 10 min continuous
Off 10 min
Emergency Lowering Electrical and Manual
Operating Environmental Conditions
Temperature 5°C to 40°C
Relative Humidity 20% to 90% @ 30°C
non-condensing
Atmospheric Pressure 700 to 1060 hPa
Storage Environmental Conditions
Temperature -10°C to +50°C
Relative Humidity 20% to 90% @ 30°C
non-condensing
Atmospheric Pressure 700 to 1060 hPa

Page 7 of 18
52396 R00
MECHANICAL SYSTEM
SLING BAR
LIFT ARM
MAST
LEG (2)
BASE FRAME
Lift strap guide socket & control limit switches
Lift strap
Lift strap roller (6)
Manual lowering gearbox
Lift strap actuator
Lift strap block
Lift strap block guide roller (4)
Lift arm guide roller (4)
Drive wheel (2)
Lift arm actuator
Wheel actuator
Caster (2)
Leg actuator (2)

Page 8 of 18
52396 R00
ELECTRICAL SYSTEM
Sling bar position, lift strap slack
& lift strap twist limit switches
Lift strap actuator
Lift arm actuator
Leg actuator (2)
Wheel actuator
Lift control handset
Drive control joystick
Lift strap slack limit switch
Emergency stop pushbutton
Emergency lowering pushbutton
Battery charger
Drive control & power supply
Drive wheel (2)
Lift control & power supply
Power/control PCB
Wheel position
limit switch
Also refer to the Denali 600 Motor &
Control System Schematic
Rechargeable battery

Page 9 of 18
52396 R00
MAINTENANCE
PERIODIC MAINTENANCE
The following scheduled maintenance and inspections will help to ensure trouble-free operation of your Denali
600 Patient Lift.
Not recommended for use in shower or a wet environment.
Do not pressure-wash.
EVERY DAY
Charge the battery.
ONCE A MONTH
Check the sling bar strap for damage or fraying.
Check for loose or missing fasteners or other parts.
ONCE A YEAR
Perform load testing.
EVERY 2 YEARS
Replace the sling bar strap.
There are no components on the Denali 600 that require periodic lubrication. All bearings and moving
components are lubricated for the life of the product.
WARNING
No unauthorized modification of this equipment is allowed. Contact Wy’East Medical prior to any modification of
this equipment
CLEANING
Clean the unit once a month or as needed. For cleaning and disinfection use a 5% chlorine bleach dilution and an
EPA registered Hard Surface Disinfectant on painted and plastic surfaces. On all other surfaces use an EPA
registered Hard Surface disinfectant wipe that does not contain sodium hypochlorite (bleach).
The lift strap may only be cleaned with water using a damp cloth. Allow to dry completely before use.
Always test cleaning agents for compatibility on an inconspicuous area.

Page 10 of 18
52396 R00
FAULT INDICATIONS & TROUBLESHOOTING
HANDSET FAULT INDICATION
Beeping will be heard when pushing a button on the handset if there is a
problem with the handset itself or the associated control or motor system.
Contact Wy’East Medical for technical support should this occur.
JOTSTICK FAULT INDICATION
Flashing of the horizontal or vertical row of lights will appear if there is a
problem with the joystick itself or the associated control or motor system.
Contact Wy’East Medical for technical support should this occur.
TROUBLESHOOTING
Symptom Possible Cause Action
No power for driving or lifting
Battery is not fully charged Charge battery
Battery is damaged Replace battery
Red Emergency Stop switch is pushed in Turn switch clockwise to reset
Unresponsive steering or jerky motion
when driving
One or both wheel locking levers not in
locked (down) position
Push both wheel locking levers
to locked (down) position
Battery will not charge Battery is damaged Replace battery
Light flashing on drive control joystick Charger is connected to battery Disconnect charger from battery
Sling bar will not raise or lower
Slack in sling bar strap Remove slack in strap
Bad actuator or controls Contact Wy’East for service
Sling bar will not raise Twist in sling bar strap Remove twist in strap

Page 11 of 18
52396 R00
TROUBLESHOOTING
CONTINUED
Lift arm will not raise or lower
Slack in sling bar strap Remove slack in strap
Bad actuator or controls Contact Wy’East for service
Lift arm will not lower Twist in sling bar strap Remove twist in strap
Legs will not open or close Bad actuator or controls Contact Wy’East for service
Unresponsive lift control handset Bad handset or controls Contact Wy’East for service
Unresponsive drive control joystick Bad joystick or controls Contact Wy’East for service
LIMIT SWITCH ADJUSTMENTS
SLING BAR UP/STRAP TWIST LIMIT SWITCH ADJUSTMENT
1. Remove the lift arm end cover.
2. With the strap taught and a single thickness of it
against the strap follower roller the LS should not be
tripped. (closed circuit)
3. With the strap taught and a double thickness of it
against the strap follower roller the LS should be
tripped. (open circuit)
4. Adjust the LS using the mounting screws.
LS mounting
screw (2)
Single thickness
of strap
LS lever in
not tripped
position
Strap follower roller
LS lever in
tripped
position
Double thickness
of strap at sewn
sling bar loop

Page 12 of 18
52396 R00
STRAP SLACK LIMIT SWITCH ADJUSTMENT
1. Remove the lift arm end cover.
2. With the strap taught and against the strap
follower roller the LS should not be tripped. (closed
circuit)
3. With the strap slack the LS should be tripped.
(open circuit)
4. Adjust the LS using the mounting screws and the
bias spring force using the hex nuts.
1. Remove the lower side covers.
2. With the strap taught and against the LS lever the
LS should be tripped. (closed circuit)
3. Adjust the LS using the mounting screws.
Strap follower roller
Bias spring
LS lever in
not tripped
position
Taught strap
Slack strap
LS lever in
tripped
position
LS mounting
screw (2)
LS lever in
tripped
position
LS mounting
screw (2)
Taught strap
Hex nuts

Page 13 of 18
52396 R00
WHEEL POSITION LIMIT SWITCH ADJUSTMENT
1. Remove the rear base cover.
2. With the wheel actuator fully extended and against
the LS lever the LS should be tripped. (closed
position)
3. Adjust the LS using the mounting screws.
PARTS REPLACEMENT
CASTER REPLACEMENT
1. Support the leg as shown
2. Remove the nut, bolt and caster.
3. Install new caster.
DRIVE WHEEL REPLACEMENT
1. Remove the battery.
2. Remove the rear cover and support the base frame as
shown.
3. Disconnect the wheel cable from the PCB and
attachment points.
4. Loosen the pivot bolt 1/2 turn. Remove the actuator nut
and bolt and swing the actuator away from the wheel.
5. Support the wheel and remove the pivot bolt & washer.
6. Lower the wheel to remove it.
7. Install new wheel and connect cable to the PCB
restoring the cable attachment points.
Pivot bolt & washer
Actuator nut & bolt
Wheel cable
LS lever in
tripped
position
Wheel actuator
screw with
actuator fully
extended
LS mounting
screw (4)

Page 14 of 18
52396 R00
SLING BAR REPLACEMENT
1. Remove the housing screws.
2. Slide the housing and top up the lift strap.
3. Remove the pin and sling bar.
4. Install new sling bar.
LIFT STRAP REPLACEMENT
1. Remove the battery, arm covers and upper and
lower side covers.
2. Lower the sling bar so there is at least two feet of
strap exposed below the lift arm and remove the sling
bar.
3. Disconnect the strap from the mast by removing
the anchor screws.
4. Remove the E ring, nylon washer and pin from the
strap.
See next page
Top
Housing
Pin
Housing screw
Arm covers
Upper & lower side covers
Anchor screw (2)
E ring & nylon
washer
Upper strap
anchor
mounting
holes

Page 15 of 18
52396 R00
5. At the sling bar end of the existing strap join the
new strap to it using two pieces of 1” wide x 9” duct
tape. Leave a ¾” gap between the two straps. Ensure
that the tape extends about an inch beyond the sewn
junctions of the straps.
6. Pull the new strap into place using the existing
strap by pulling on the anchor end of the existing
strap while feeding the new strap from the sling bar
end. Ensure the strap follows the route of the existing
strap and that it does not twist or have excessive
slack.
See next page
Duct tape (2)
Lift arm end roller
Lift arm elbow roller
Strap block roller (2)
Mast roller
Lift arm base roller
¾” gap
1” beyond
sewn junction

Page 16 of 18
52396 R00
7. Secure the new strap at the anchor end using the
upper most strap anchor mounting holes.
8. Attach the sling bar.
LIFT STRAP ADJUSTMENT
Over time the lift strap may stretch to a point that
when the lift arm is fully raised the sling bar cannot
be raised completely to the arm. This can be corrected
by moving the strap anchor to either the middle or
lower position. Each position increases the lift strap
upward travel by 4”.
1. Raise the lift arm to its maximum up position.
2. Raise the sling bar. If it does not go all the way to
the arm move the strap anchor as needed.
NOTE: There must be at least 4” of lift strap exposed
between the sling bar and the arm to move the strap
anchor one position. If there is not 4” of lift strap
exposed use the manual lowering until there is before
moving the strap anchor.
E ring
Anchor pin
Anchor screw (2)
Nylon washer (2)
Metal washer (2)
Strap anchor
mounting holes
Upper
Middle
Lower

Page 17 of 18
52396 R00
FACTORY ASSISTANCE
REPLACEMENT PARTS
To order replacement parts contact Wy’East Medical customer service or your Wy’East representative.
Include the following information with your request:
The serial number of your Denali 600 patient lift.
Purchase date if possible.
Part number and description of the part needed.
Shipping and billing instructions.
RETURNING ITEMS
Before returning items contact Wy’East Medical for authorization and instructions.
NOTES

Page 18 of 18
52396 R00
CONTACT INFORMATION
Wy’East Medical Corporation
P.O. Box 1625
Clackamas, OR 97015, USA
[phone]
[phone]
FAX: [phone]
www.wyeastmedical.com
[e-mail]