Arjo CARENDO Operating instructions

09.CC.01_8EN • 01/2019
MAINTENANCE AND REPAIR MANUAL
Carendo
For internal use only!

MRM Carendo
2
Index
Service Procedures....................................................................... 4
Lubrication, Sealants, Lockings and Torques...........................24
Tools ............................................................................................ 30
Trouble shooting......................................................................... 31
NOTE
Before using this manual you must have taken part of andunderstood the Safety Precautions
09.NE.01.Blue text indicates changes compared to previous manual.

MRM Carendo Service Procedures
3
Service Procedures
Preventive Maintenance Schedule
Caregiver obligations
PMS Carendo
Action/check Every
day Every week Every 6 months Every 2:d year
Cleaning/Disinfection x
Visually check safety strap x
Visually check all exposed parts x
Visually check mechanical attachments x
Check handset and cable x
Check/clean castors x
Check cushions/pillows x
Visually check battery charger and battery x
Lubricate locking pins x
Replace safety belt x
Qualified personnel actions
PMS Carendo
Action/check Every
year Every 2:nd year Service procedure Page
Check that the latest updates have been
implemented x 1 5
Check battery x26
Check all vital parts for corrosion/damage x 3 7
Check mechanical attachments x 4 8
Lubricate bearings x 5 9
Perform a safe working load test x 6 10
Check the safety stop function x 7 11
Check function of emergency lowering x 8 12
Perform full feature functionality test x 9 13
Inspect castors x10 14
NOTE
All caregiver obligations according to Instructions for Use (IFU) are to be checked when
performing the Qualified personnel Service
WARNING
The points on this checklist are the minimumthe manufacturer recommends. In some cases
due to heavy use of the product and exposure to aggressive environment, more frequent
inspections should be carried out. Continuing to use this product without conducting regular
inspections or continuing to use this product when a fault is found will seriously compromise
the user and residents safety. Local regulations and standards may be higher than the
manufacturers. Preventive maintenance specified in this manual can prevent accidents.

Service Procedures MRM Carendo
4
Service procedures not included in PMS
Right side
Left side
SP 13 Replace
worm gear/motor
p.18
SP 14 Replace
actuator p.20
SP 12 Replace
locking device
p.17
SP 15 Replace
emergency
buttons p.23
SP 11 Replace
PCBA and
fuses p.16

MRM Carendo Service Procedures
5
SP 1. Check that the Latest
Updates have been
Implemented
Check if there are any Field Safety Notices or
Technical Advisory Notices (FSN:s and
TAN:s) that have been published since the last
service.
Field Safety Notice: information notice
informing of what actions must be taken in a
Field Safety Corrective Action.
Technical Advisory Notices are divided in
three classes:
•A:FieldSafetyCorrectiveAction (FSCA)
Information about what technical
interventions to be made in order to remedy
safety related issues described by the Field
Safety Notice (FSN)
•B: Information about non-safety related
changes
•C: Information about administrative issues
The check must be done to keep the product up
to date according to safety and product im-
provements.
Example of a published Technical Advisory
Notice C

Service Procedures MRM Carendo
6
SP 2. Check battery
Check the battery
The battery condition tester will load the
battery with a high current for a short time and
this will show the battery condition on a meter.
The battery power tester will load the battery
with up to 10 A depending on battery
condition.
Battery test
1. The battery to be tested must be charged for
at least 12 hours before test!
2. Connect the tester to the battery with
suitable connector (a)
3. Press and hold button (b) for 1-2 seconds
4. The meter (c) will show the battery
condition.
5. Green indication = PASS
Yellow indication= PASS
Red indication = FAIL
6. If the battery is OK, put the tested battery
back in the charger after the test. If not
replace the battery.
Battery condition tester
b
a
c
WARNING
• The battery power tester will become
hot and there is a potential risk of fire.
• Make sure the battery power tester is
kept away from inflammable material
during tests and for several minutes
following the test.
c

MRM Carendo Service Procedures
7
SP 3. Check all vital parts for
corrosion/damage
This check is to preserve the safety and
performance of the product.
Check:
a. Pillow, seat- and back cushion
b. Care raiser, lubrication of locking pins see
page 28
c. Leg support and raiser
d. Seat
e. Back rest with storage net
f. Handset and cable
g. Safety strap
h. Buttons
i. Bellows
j. Castors:
See page “SP 10. Inspect Castors” on
page 14
k. Battery: See Operating and Product Care
Instructions
(All check points a-k are also included in PMS
Caregiver Obligations on page 3)
i
a
b
gk
j
c
d
f
e
h
f

Service Procedures MRM Carendo
8
SP 4. Check Mechanical
Attachments
This check is to preserve the safety and
performance of the product.
Check attachment of:
a. Safety strap knob
b. Raiser
c. Tie rods
d. Care raiser and leg support
e. Castors: see page “SP 10. Inspect Castors”
on page 14
f. Bellows, (strap or clamp)
g. Buttons and handset cable
h. Locking device
See also “Lubrication, Sealants, Lockings and
Torques” on page 24 and “Tools” on page 30
NOTE
Screws and bolts attached with Loctite should not
be checked by tools but manually to test if the
jointing/component is securely fitted.
If tightening is needed and Loctite is previously
used new Loctite must be applied. Proceed
according to the Loctite manufactures instructions.
f
f
d
a
e
c
f
g
c
b

MRM Carendo Service Procedures
9
SP 5. Lubricate Bearings
1. Rise the Carendo partially but not all the
way, locking pins shall not be out.
2. Remove the battery
3. Loosen the three screws (a) for the cover on
the inside.
4. Pull off the cover (b) gripping the cover
from below, trying to get grip with your
fingertips in the slit and gently pulling up-
and outwards.
5. Loosen the two screws (c) on the lower
bearing
6. Be careful about the cable protection (d) on
the right lower bearing.
7. You can use the loose screws to pull out the
bearing.
8. Lubricate the bearing (e), see page 24.
9. Repeat procedure 5-7 for the upper bearing
three screws (f)
Reassembling
10.Use Loctite and torque on the screws.
See page 24 and 30.
11.Repeat procedure 1-10 for the opposite side.
a
Lower bearingUpper bearing
Left
bc
f
e
e
Right d
f
a
c
e
e
6
d
7

Service Procedures MRM Carendo
10
SP 6. Perform a Safe Working
Load Test
Applicable load test:
•Model:Carendo
• SWL:136 kg (300 lb.)
• Test load:136 kg (300 lb.)
General load test procedure is not ready. Please
refer to local requirements.

MRM Carendo Service Procedures
11
SP 7. Check the Safety Stop
Function
1. Lower the seat using both the handset and
the emergency lowering at the same time
holding an armrest to stop the motion.
2. The lift shall stop
3. If not check
-cabling (a) from actuator to PCBA
orange+ green (lowering)
Yellow+brown (emergency lowering)
-connection J2 on PCBA
-microswitches (b) on actuator
b
b
a

Service Procedures MRM Carendo
12
SP 8. Check Function of
Emergency Lowering
1. Press the button
2. Carendo shall lower
3. If not check:
- button
- cabling to PCBA connection J7
- fuse F3
before replacing PCBA

MRM Carendo Service Procedures
13
SP 9. Perform Full Feature
Functionality Test
Full feature functionality test
Function Activation Demands for approval
Castors - See SP 9
Reclining of seat Handcontrol button Seat is reclining
Reclining of seat + care raiser Handcontrol button Seat is reclining, care raiser locked
Raising of seat Handcontrol button Seat is raising
Raising of seat +care raiser Handcontrol button Seat is raising, care raiser locked
Lift up Handcontrol button Chair is raising
Lift down Handcontrol button Chair is lowering
Emergency down Green button Chair is lowering
Emergency stop Red button All functions stop, button can be
released

Service Procedures MRM Carendo
14
b
SP 10. Inspect Castors
Do a validation concerning wear, movement of
everyswivel/ wheeland appearanceas follows.
1. Lay the product down
2. Check ease of motion of swivel by rotating
the castor upwards (a) and let it fall by
gravity from both sides: There must be no
resistance and the end position must be
down.
3. Check ease of motion of wheel by slightly
rotating the wheel: The wheel must
continue to rotate when released and
must not be noisy. (b)
4. Check the wheel tread for roundness: No
flat tear, cuts in the tread or ovality is
acceptable
5. Raise the product
6. Check function of brakes (if applicable) by
applying the brakes and push the product
forward: The brakes must lock the wheels
and the brake lever must function on/off
7. Apply load to the product (approx. 80 kg)
and do a test drive: It must be possible to
drive straight forward and to turn
without effort.
8. If any of these criteria are not fulfilled the
complete castor must be replaced.
9. The service technician must also state, if not
all wheels are replaced, that the old wheels
will last another year. This including the
general appearance (damages and,
corrosion).
NOTE
The castors must be properly cleaned according
to the customer obligations before starting.
NOTE
All castors must be of the same brand. It´s not
permitted to use different versions of castors
on the same product.
Wheel tread
Complete castor
Brake
Wheel
Swivel
a

MRM Carendo Service Procedures
15
Replacement
1. Lay the Carendo down.
2. Loosen and remove the castor from the
chassis.
3. Clean the threads in the hole. (Refer to
Loctite instructions)
4. Apply Loctite. (see page 24 for quality)
5. Assemble the new castor with new bolt and
washer. (torque see page 30)
6. Check function of the new castor.

Service Procedures MRM Carendo
16
SP 11. Replace PCBA and
fuses
1. Remove the battery (Old version PCBA up
to November 2018)
2. Loosen the three (old model)/ ten (new
model) screws on the service cover.
3. Remove the cover and the membrane seal
(old model) /seal (new model).
4. (From June 2012) Snap off metal cover (a)
using the white plastic tool (b)
5. (Old version PCBA, up to P0519013):
Locateandreplacethefusesif needed.Goto
8 if you will not replace the PCBA.
(New version PCBA, from P0519014):
• Push "UP" on the hand control. If not in
lowest position also push the emergency
lowering button
•IfLED1(c)on PCBA turn ON, it indicates
that fuse F1 or F3 needs to be replaced
• Remove the battery
•Go to 8 if you will not replace the PCBA.
6. Disconnect the cables and remove the
PCBA using the special white plastic tool
(b) (no. 8453102).
7. Insert the new PCBA and connect the
cables. (see Technical Manual if necessary)
8. Reassemble:
Attach metal cover and service cover.
Ifthemembranesealisdifficulttoassemble,
some soap might help (Old model only).
9. Insert the battery.
2b
a
c

MRM Carendo Service Procedures
17
SP 12. Replace locking device
1. Remove the battery.
2. Loosen the three (old model)/ ten (new
model) screws (a) for the service cover.
3. Remove the cover and the membrane seal
(old model) /seal (new model)
4. (From June 2012) Snap off metal cover (b)
5. Disconnect the cables on the PCBA J3 (left)
and J4 (right).
6. Remove the locking pins with screws (c).
7. Remove the four Allen screws (d).
8. Lift out the complete mounting plate with
the locking devices.
9. Unscrew the two screws with nuts (e) on the
locking device.
10.Replace the locking device.
11.When reassembling, use new locking nuts
for the locking device and correct torques
according to page 30. Use Loctite on the
screws for the locking pins (according to
page 28).
12.When tightening the screws for the
mounting plate check that the locking pins
move freely.
13.Wiring Diagram for the PCBA can be found
in the Technical Manual.
14.Reassemble seal, cover for PCBA (from
June 2012) and service cover.
c
c
d
e
a
b

Service Procedures MRM Carendo
18
SP 13. Replace worm gear/
motor
1. Proceed according to page 20 items 1-5. Re-
move covers on both sides.
2. When reconnecting with connection block
(a) see page 23. (Difference old/new
cabling)
3. Loosenthe lowerrod (Allenscrews) onboth
sides.
4. Loosen two bolts on the bearing on both
sides.
5. Loosen the service cover on the backrest
according to page 17 item 2-3.
6. Support the backrest from below to prevent
it from falling down.
7. Use the loose screws on the bearing to pull
out the bearings on both sides.
8. Remove the care raiser with leg supports
forwards.
9. Bend slightly with a big, wide screwdriver
or similar to loosen the seat attachment. Be
careful not to damage the plastics!
10.Loosen the screws for the leg support
11.Remove the seat.
12.Loosen the screws for the upper rod
attachment to the motor.
13.Remove the backrest.
14.Lay the backrest down.
2
3
New
Old
a
4
7
8
9
10
12

MRM Carendo Service Procedures
19
15.Remove the blue button, two screws inside
and three screws outside.
16.Disconnect the motor connections J8, J9 on
the PCBA.
17.Remove the cover.
18.Loosen the three bolts for the worm gear unit.
To replace only the motor:
19.Loosen the two bolts and pull off the motor
from the splines.
Reassembling:
1. When reassembling notice the position of the
cable.
2. Use Loctite according to page 24 and correct
torques according to page 30.
3. Be careful about the cable protection.
15.
A
B
D
D
C
A= Longest screw
B= Second longest screw
C= Shortest screw
D= Equal length of screws
15
17-18
19

Service Procedures MRM Carendo
20
SP 14. Replace actuator
1. Rise the Carendo partially but not all the way,
as the actuator then cannot be removed.
2. Remove the battery
3. Loosen the three screws for the right cover on
the inside.
4. Pull off the cover gripping the cover from
below, trying to get grip with your fingertips
in the slit and gently pulling up- and
outwards.
5. Loosenthe cables(a)Old version:connection
block, New version: two quick couplings -
push couplings through hole of bearing.
6. Turn the Carendo carefully on the side.
7. Cut the top strap/loosen the clamp (b) holding
the bellows.
8. Loosen the three Allen bolts (c) and pull out
the cable (d). (Old thick bracket illustrated)
9. Pull out the actuator from the yoke (e). Watch
the two plastic bushings (f).
10.Loosen the four screws (h) for the bottom
cover.
(New version) Remove plugs (g)
11.Loosen the two bolts (i) for the actuator (note
different length old/new). Use a joint
coupling for the wrench on old version see
photo below.
12.Pull out the actuator (j) downwards.
9
Old version
h
3
Old
15
a
New
8
d
c
9
f
e
11
ij
10,11
New version
g
h
fg
c
d
i
j
e
b