Stryker IsoTour Standard 2874 User manual

IIssooTToouurr™™ PPuummpp
MMaaiinntteennaannccee MMaannuuaall
2874
EN
2874-009-002 Rev AA.0 2021-11

TTaabbllee ooff CCoonntteennttss
Warning/Caution/Note Definition ..............................................................................................................................3
Summary of safety precautions ................................................................................................................................3
Introduction for service .............................................................................................................................................4
Expected service life ...............................................................................................................................................4
Contact information.................................................................................................................................................4
Serial number .........................................................................................................................................................4
Service ......................................................................................................................................................................5
Connecting the power cord ......................................................................................................................................5
Access diagnostic mode..........................................................................................................................................5
Protecting against electrostatic discharge (ESD) .......................................................................................................6
Powering off the pump.............................................................................................................................................6
Fuse replacement ...................................................................................................................................................6
Bumper replacement...............................................................................................................................................7
Foot replacement....................................................................................................................................................7
Filter replacement ...................................................................................................................................................8
Flex grip replacement..............................................................................................................................................9
LCD screen replacement .......................................................................................................................................11
Transport handle replacement ...............................................................................................................................13
Hook replacement.................................................................................................................................................14
Front pump housing replacement ...........................................................................................................................15
Power supply replacement.....................................................................................................................................15
Power inlet replacement ........................................................................................................................................16
PCB assembly replacement...................................................................................................................................16
LED board replacement.........................................................................................................................................17
Solenoid/valve replacement...................................................................................................................................18
Pump replacement................................................................................................................................................18
Preventive maintenance .........................................................................................................................................20
Troubleshooting ......................................................................................................................................................21
Power cords ............................................................................................................................................................23
Pump housing assembly - 2874-007-017...............................................................................................................24
Top panel assembly - 2874-007-018......................................................................................................................25
Hook assembly - 2874-007-019 .............................................................................................................................26
Bumper pack - 2874-007-020.................................................................................................................................27
Pump housing rubber foot assembly - 2874-007-022 ............................................................................................28
Compressor assembly - 2874-007-023 ..................................................................................................................29
Power supply assembly - 2874-007-024 ................................................................................................................30
PCBA assembly - 2874-007-025 ............................................................................................................................31
HEPA filter - 2874-007-026.....................................................................................................................................32
Air filter guard - 2874-007-027................................................................................................................................33
3 way digital valve assembly - 2874-007-028.........................................................................................................34
5 way digital valve assembly - 2874-007-029.........................................................................................................35
Front LED module assembly - 2874-007-030 ........................................................................................................36
Handle assembly - 2874-007-031 ..........................................................................................................................37
Mattress hose assembly - 2874-007-034 ...............................................................................................................38
EMC information .....................................................................................................................................................39
Recycling passport .................................................................................................................................................43
583M104002 ........................................................................................................................................................43
583M104001...........................................................................................................................................................44
553M104003...........................................................................................................................................................45
2874-009-002 Rev AA.0 1 EN

2874-007-001 .........................................................................................................................................................46
2874-007-002 .........................................................................................................................................................47
2874-007-003 .........................................................................................................................................................48
2874-007-004 .........................................................................................................................................................49
2874-007-005 .........................................................................................................................................................50
2874-007-006 .........................................................................................................................................................51
2874-007-007 .........................................................................................................................................................52
2874-007-008 .........................................................................................................................................................53
2874-007-009 .........................................................................................................................................................54
2874-007-010 .........................................................................................................................................................55
2874-007-011 .........................................................................................................................................................56
2874-007-012 .........................................................................................................................................................57
2874-007-013 .........................................................................................................................................................58
2874-007-014 .........................................................................................................................................................59
2874-007-015 .........................................................................................................................................................60
2874-007-016 .........................................................................................................................................................61
2874-007-037 .........................................................................................................................................................62
2874-007-038 .........................................................................................................................................................63
2874-007-041 .........................................................................................................................................................64
2874-007-042 .........................................................................................................................................................65
EN 2 2874-009-002 Rev AA.0

WWaarrnniinngg//CCaauuttiioonn//NNoottee DDeeffiinniittiioonn
The words WWAARRNNIINNGG,CCAAUUTTIIOONN, and NNOOTTEE carry special meanings and should be carefully reviewed.
WWAARRNNIINNGG
Alerts the reader about a situation which, if not avoided, could result in death or serious injury. It may also describe
potential serious adverse reactions and safety hazards.
CCAAUUTTIIOONN
Alerts the reader of a potentially hazardous situation which, if not avoided, may result in minor or moderate injury to the
user or patient or damage to the product or other property. This includes special care necessary for the safe and effective
use of the device and the care necessary to avoid damage to a device that may occur as a result of use or misuse.
NNoottee -- Provides special information to make maintenance easier or important instructions clearer.
SSuummmmaarryy ooff ssaaffeettyy pprreeccaauuttiioonnss
Always read and strictly follow the warnings and cautions listed on this page. Service only by qualified personnel.
WWAARRNNIINNGG
• Do not modify or change this device. Service should only be completed by qualified personnel. Failure could result in
injury and void your warranty.
• The use of accessories, transducers, and cables, other than those specified or provided by the manufacturer, could
result in increased electromagnetic emissions or decreased electromagnetic immunity and result in improper operation.
• Portable RF communications equipment, including peripherals such as antenna cables and external antennas, should
be no closer than 12 inches (30 cm) to any part of IIssooTToouurr, including cables specified by the manufacturer.
• Avoid stacking or placing equipment adjacent with other equipment to prevent improper operation of the products. If
such use is necessary, carefully observe stacked or adjacent equipment to make sure that they are operating properly.
CCAAUUTTIIOONN
• Always use ESD protective equipment before you open antistatic bags and service electronic parts.
• Do not place unprotected circuit boards on the floor.
• Always use a grounded static strap to prevent static coming into contact with the PCB assembly.
2874-009-002 Rev AA.0 3 EN

IInnttrroodduuccttiioonn ffoorr sseerrvviiccee
This manual assists you with the service of your Stryker product. Read this manual to service this product. This manual
does not address the operation of this product. See the Operations Manual for operating and use instructions. To view your
Operations Manual online, see https://techweb.stryker.com/.
EExxppeecctteedd sseerrvviiccee lliiffee
The IIssooTToouurr PPuummpp has a 5 year expected service life under normal use, conditions, and with appropriate periodic
maintenance.
The air hose has a 2 year expected service life under normal use, conditions, and with appropriate periodic maintenance.
CCoonnttaacctt iinnffoorrmmaattiioonn
Contact Stryker Customer Service or Technical Support at: 1-800-327-0770.
Stryker Medical
3800 E. Centre Avenue
Portage, MI 49002
USA
NNoottee -- The user and/or the patient should report any serious product-related incident to both the manufacturer and the
Competent authority of the European Member State where the user and/or patient is established.
To view your operations or maintenance manual online, see https://techweb.stryker.com/.
Have the serial number (A) of your Stryker product available when calling Stryker Customer Service or Technical Support.
Include the serial number in all written communication.
SSeerriiaall nnuummbbeerr
A
EN 4 2874-009-002 Rev AA.0

SSeerrvviiccee
CCoonnnneeccttiinngg tthhee ppoowweerr ccoorrdd
1. Bring the product to room temperature.
2. Attach the power cord to the pump.
3. Insert the power cord under the power cord retention flex grip (A) (Figure 1).
A
FFiigguurree 11 –– CCoorrdd rreetteennttiioonn fflleexx ggrriipp
4. Plug the pump power cord into an accessible outlet.
5. Place the pump power cord out of the path of foot traffic to avoid trip hazards.
6. Place the pump in a secure location. Allow space around the pump to connect and disconnect the hoses and power
cord.
a. Option 1: Hang the pump on a compatible bed. Make sure that the pump is secure.
b. Option 2: Place the pump on the floor.
AAcccceessss ddiiaaggnnoossttiicc mmooddee
PPrroocceedduurree::
1. Make sure that the support surface hoses are plugged into the pump and there is no weight on the support surface.
2. Power on the pump.
3. As the software loads, within 5 seconds of pressing the on button (Figure 2), press and hold the upper left button (Figure
3).
2874-009-002 Rev AA.0 5 EN

IsoTour
FFiigguurree 22 –– SSooffttwwaarree llooaaddiinngg
V vx.x.x.xxx
FFiigguurree 33 –– SSeerrvviiccee ssccrreeeenn aanndd vveerrssiioonn
4. Press the lower left button to start the diagnostics mode.
NNoottee -- The software version is located on the service screen (Figure 3).
5. The diagnostic results should all pass with OK.
a. If diagnostic results do not pass, investigate failed area referenced in the diagnostic test results.
PPrrootteeccttiinngg aaggaaiinnsstt eelleeccttrroossttaattiicc ddiisscchhaarrggee ((EESSDD))
CCAAUUTTIIOONN
• Always use ESD protective equipment before you open antistatic bags and service electronic parts.
• Do not place unprotected circuit boards on the floor.
NNoottee -- Always ship the circuit boards back to Stryker. Use the antistatic bag that the new board was originally shipped in.
The electronic circuits in the product are completely protected from static electricity damage when factory assembled.
Always use adequate static protection when you service the electronic systems of the product. All service personnel must
use static protection whenever they touch wires.
Sample antistatic protection equipment includes:
• Antistatic wrist strap
• Grounding plug
• Test lead with a banana plug on one end and an alligator clip on the other end
Make sure that you follow the ESD manufacturer’s instructions for appropriate protection against static discharge.
PPoowweerriinngg ooffff tthhee ppuummpp
Press the power button and hold for 2 seconds to power off the pump.
NNoottee
• Allow the support surface to deflate before you unplug the power cord.
• For optional deflation, remove the CPR plug from the support surface.
FFuussee rreeppllaacceemmeenntt
Fuse: F3.5AH250V
TToooollss rreeqquuiirreedd::
• Slotted screwdriver
EN 6 2874-009-002 Rev AA.0

• Digital multi-meter
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump face down on a work surface.
4. Using a slotted screwdriver, remove the fuse cover located below the power inlet. Save the fuse cover.
NNoottee -- If you need to check a fuse, use a digital multi-meter.
5. Remove and discard the fuse.
6. Reverse steps to reinstall.
7. Verify proper operation before you return the product to service.
BBuummppeerr rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• Pick
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump with the front pump housing side down on a work surface.
4. Using a pick, remove the bumpers (A) from the back pump housing (Figure 4). Discard the bumpers.
A
A
FFiigguurree 44 –– BBuummppeerrss
5. Place and press the bumpers in place.
FFoooott rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
• 6 mm socket
2874-009-002 Rev AA.0 7 EN

• Ratchet
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump front down on a work surface.
4. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
5. Using two hands, rotate the pump assembly to the right so the front is on your left.
6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
7. Using a ratchet and a 6 mm socket, remove the six nuts (A) that secure the foot (B) to the front pump housing (
Foot
replacement
(page 7)). Save the nuts.
A
B
FFiigguurree 55 –– FFoooott
8. Remove and discard the foot.
9. Reverse the steps to reinstall.
10.Run and pass the diagnostic test.
11.Verify proper operation before you return the product to service.
FFiilltteerr rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
EN 8 2874-009-002 Rev AA.0

2. Unplug the support surface tubing from the pump.
3. Place the pump face down on a work surface.
4. Using a T20 Torx driver, remove the screw (A) that secures the filter access door (B) (Figure 6). Save the screw.
A
B
C
FFiigguurree 66 –– FFiilltteerr
5. Remove and save the filter access door.
6. Remove and discard the filter (C).
7. Reverse steps to reinstall.
8. Verify proper operation before you return the product to service.
FFlleexx ggrriipp rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
PPrroocceedduurree::
1. Unplug the pump power cord from the wall outlet.
2. Unplug the support surface hose from the pump.
3. Place the pump face down on a work surface.
4. Using a T20 Torx driver, remove the screw (A) that secures the filter access door (B) to the back cover (Figure 7).
Discard the screw.
2874-009-002 Rev AA.0 9 EN

A
B
FFiigguurree 77 –– BBaacckk ccoovveerr
5. Using a T20 Torx driver, install the supplied delta screw (C) (0023-162-000), flat washer (D) (2941-007-002), and power
cord retention flex grip (E) (2941-007-004) to secure the filter access door (B) to the back cover (Figure 8).
C
D
E
B
FFiigguurree 88 –– IInnssttaallll tthhee ppuummpp ppoowweerr ccoorrdd pp--ccllaammpp
6. Insert the power cord under the power cord retention flex grip (F) (Figure 9).
EN 10 2874-009-002 Rev AA.0

F
G
FFiigguurree 99 –– IInnsseerrtt ppoowweerr ccoorrdd
7. Plug the support surface hose back into the pump (G) (Figure 9).
8. Secure the power cord (Figure 10).
FFiigguurree 1100 –– PPoowweerr ccoorrdd sseeccuurree
9. Plug the pump back into the wall outlet.
10.Verify proper operation before you return the product to service.
LLCCDD ssccrreeeenn rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
• #2 Phillips screwdriver
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
2874-009-002 Rev AA.0 11 EN

3. Place the pump front down on a work surface.
4. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
5. Using two hands, rotate the pump assembly to the right so the front is to your left.
6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
7. Unplug all cables from the PCBA assembly.
NNoottee -- Pay attention to the hose locations for reinstallation.
8. Unplug the four pressure transducer hoses.
NNoottee -- The hoses are labeled to match the silk screen on the PCBA for proper hose location.
9. Using a #2 Phillips screwdriver, remove the two screws that secure the support bracket to the PCBA assembly and the
screen to the front pump housing. Save the screws.
10.Using a #2 Phillips screwdriver, remove the three screws (D) that secure the board to the PCBA assembly (B and C) to
the screen (A) (Figure 11). Save the screws.
C
D
A
B
E
F
EE
FFiigguurree 1111 –– PPCCBBAA aasssseemmbbllyy
11.Using a #2 Phillips screwdriver, remove the four screws (F) that secure the LCD screen and gasket (E) to the front pump
housing. Save the screws.
12.Remove and discard the LCD screen and gasket.
13.Reverse the steps to reinstall.
14.Run and pass the pump diagnostic test.
EN 12 2874-009-002 Rev AA.0

15.Verify proper operation before you return the product to service.
TTrraannssppoorrtt hhaannddllee rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
• #2 Phillips screwdriver
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump face down on a work surface.
4. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
5. Rotate the pump assembly to the right, so the front of the pump is on your left.
6. Separate the front and back pump housing. Place the back of the pump down on the work surface.
7. Using a #2 Phillips screwdriver, remove the eight screws that secure the mounting plate to the back pump housing.
Save the screws.
8. Using a #2 Phillips screwdriver, remove the one screw that secures the p-clamp and compressor wires to the mounting
plate. Save the screw.
9. Tip the mounting plate in toward the front pump housing to access the transport handle screws.
10.Remove and save the backboard.
11.Using a #2 Phillips screwdriver, remove the four screws (B) that secure the transport handle (A) to the back pump
housing (Figure 12). Save the screws.
A
B
FFiigguurree 1122 –– TTrraannssppoorrtt hhaannddllee
12.Remove and discard the transport handle.
13.Reverse steps to reinstall.
14.Plug the pump cord into an accessible outlet.
15.Run the pump diagnostic test. All tests must pass.
2874-009-002 Rev AA.0 13 EN

16.Verify proper operation before you return the product to service.
HHooookk rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
• #2 Phillips screwdriver
• Pick
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump face down on a work surface.
4. Using a pick, remove the information label (A) on the hook assembly (Figure 13). Discard the information label.
A
C
B
D
E
FFiigguurree 1133 –– HHooookk aasssseemmbbllyy
5. Using a #2 Phillips screwdriver, remove the screw (B) that secures the hook assembly to the back pump housing. Save
the screw.
6. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
7. Rotate the pump assembly to the right, so the front of the pump is on your left.
8. Separate the front and back pump housing. Place the back of the pump down on the work surface.
9. Using a #2 Phillips screwdriver, remove the eight screws that secure the mounting plate to the back pump housing.
Save the screws.
10.Using a #2 Phillips screwdriver, remove the one screw that secures the p-clamp and compressor wires to the mounting
plate. Save the screw.
11.Tip the mounting plate in toward the front pump housing to access the transport handle screws.
12.Using a #2 Phillips screwdriver, remove the six screws (E) that secure the hook assembly (D) to the back pump housing.
Save the screws.
13.Remove and discard the hook assembly.
EN 14 2874-009-002 Rev AA.0

14.Reverse steps to reinstall.
15.Plug the pump cord into an accessible outlet.
16.Run the pump diagnostic test. All tests must pass.
17.Verify proper operation before you return the product to service.
FFrroonntt ppuummpp hhoouussiinngg rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
• #2 Phillips screwdriver
• Stubby #2 Phillips screwdriver
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump front down on a work surface.
4. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
5. Using two hands, rotate the pump assembly to the right so the front is to your left.
6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
CCAAUUTTIIOONN -- Always use a grounded static strap to prevent static coming into contact with the PCB assembly.
7. Unplug all cables from the PCB assembly.
NNoottee -- Pay attention to the cable connection locations for reinstallation.
8. Using a #2 Phillips screwdriver, remove the two screws that secure the support bracket holding the PCB assembly and
the screen to the front pump housing. Save the screws and support bracket.
9. Using a #2 Phillips screwdriver, remove the three screws that secure the board to the screen. Save the screws.
10.Grasp each of the air hoses individually and pull out from the mattress hose connector to detach each hose from the
connector.
NNoottee -- Pay attention to the air hose connection locations for reinstallation.
11.Grasp each of the pressure transducer hoses individually and pull out from the mattress hose connector to detach each
hose from the connector.
NNoottee -- Pay attention to the pressure transducer hose connection locations for reinstallation.
12.Using a stubby #2 Phillips screwdriver, remove the four screws that secure the LED board assembly to the front pump
housing assembly. Save the screws.
13.Remove the PCB assembly.
14.Remove and discard the front pump housing.
15.Reverse the steps to reinstall (
Pump housing assembly - 2874-007-017 (page 24)).
16.Run and pass the diagnostic test.
17.Verify proper operation before you return the product to service.
PPoowweerr ssuuppppllyy rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
2874-009-002 Rev AA.0 15 EN

• #2 Phillips screwdriver
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump front down on a work surface.
4. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
5. Using two hands, rotate the pump assembly to the right so the front is to your left.
6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
7. Grasp the hose at the manifold coming from the pump and pull to remove the hose from the manifold.
8. Unplug the power input cable and the power output cable from the power supply.
9. Using one hand to hold the fish paper and a #2 Phillips screwdriver, remove the four Phillips screws and washers that
secure the power supply to the main frame. Save the screws, washers, and fish paper.
10.Remove and discard the power supply.
11.Reverse the steps to reinstall (
Power supply assembly - 2874-007-024 (page 30)).
12.Run and pass the diagnostic test.
13.Verify proper operation before you return the product to service.
PPoowweerr iinnlleett rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
• Flat blade screwdriver
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump front down on a work surface.
4. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
5. Using two hands, rotate the pump assembly to the right so the front is to your left.
6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
7. Unplug the power inlet from the power supply.
8. Using a flat blade screwdriver and your finger, push out on the power inlet while you push in on each of the power inlet
locks to loosen the power inlet from the front pump housing. Repeat on the other side to remove.
9. Remove and discard the power inlet.
10.Reverse the steps to reinstall (
Pump housing assembly - 2874-007-017 (page 24)).
11.Run and pass the diagnostic test.
12.Verify proper operation before you return the product to service.
PPCCBB aasssseemmbbllyy rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
EN 16 2874-009-002 Rev AA.0

• #2 Phillips screwdriver
•
Protecting against electrostatic discharge (ESD) (page 6)
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump front down on a work surface.
4. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
5. Using two hands, rotate the pump assembly to the right so the front is to your left.
6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
CCAAUUTTIIOONN -- Always use a grounded static strap to prevent static coming into contact with the PCB assembly.
7. Unplug all cables from the PCB assembly.
NNoottee -- Pay attention to the cable connection locations for reinstallation.
8. Grasp each of the pressure transducer hoses individually and pull out from the PCB assembly to detach each hose from
the PCB assembly.
NNoottee -- Pay attention to the pressure transducer hose connection locations for reinstallation.
9. Using a #2 Phillips screwdriver, remove the two screws that secure the support bracket that hold the PCB assembly and
the screen to the front pump housing. Save the screws and support bracket.
10.Using a #2 Phillips screwdriver, remove the three screws that secure the board to the screen. Save the screws.
11.Remove and discard the PCB assembly.
12.Reverse the steps to reinstall (
PCBA assembly - 2874-007-025 (page 31)).
13.Run and pass the diagnostic test.
14.Verify proper operation before you return the product to service.
LLEEDD bbooaarrdd rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
• Stubby #2 Phillips screwdriver
•
Protecting against electrostatic discharge (ESD) (page 6)
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump front down on a work surface.
4. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
5. Using two hands, rotate the pump assembly to the right so the front is to your left.
6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
CCAAUUTTIIOONN -- Always use a grounded static strap to prevent static coming into contact with the PCB assembly.
7. Unplug the LED board cable from the PCB assembly.
NNoottee -- Pay attention to the cable connection locations for reinstallation.
2874-009-002 Rev AA.0 17 EN

8. Using a stubby #2 Phillips screwdriver, remove the four screws that secure the LED board assembly to the front pump
housing assembly. Save the screws.
9. Unplug and save the cable from the LED board assembly.
10.Remove and discard the LED board assembly.
11.Reverse the steps to reinstall (
Front LED module assembly - 2874-007-030 (page 36)).
12.Run and pass the diagnostic test.
13.Verify proper operation before you return the product to service.
SSoolleennooiidd//vvaallvvee rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• T20 Torx driver
• #2 Phillips screwdriver
• 2.5 mm hex wrench
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
3. Place the pump front down on a work surface.
4. Using a T20 Torx driver, remove the six screws that secure the back pump housing to the front pump housing. Save the
screws.
5. Using two hands, rotate the pump assembly to the right so the front is to your left.
6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
7. On the solenoid/valve that needs to be replaced, make note of the hose locations first, then unplug each hose from the
valve.
NNoottee -- Pay attention to the hose locations for reinstallation.
8. Unplug the solenoid cable from the PCB.
9. Using a #2 Phillips screwdriver and a 2.5 mm hex wrench, remove the two screws that secure the valve to the valve
bracket. Save the screws.
10.Remove and discard the solenoid/valve.
11.Reverse the steps to reinstall (
3 way digital valve assembly - 2874-007-028 (page 34) or 5 way digital valve assembly -
2874-007-029
(page 35)).
12.Run and pass the diagnostic test.
13.Verify proper operation before you return the product to service.
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TToooollss rreeqquuiirreedd::
• T20 Torx driver
• Wire cutters
• #2 Phillips screwdriver
PPrroocceedduurree::
1. Unplug the power cord from the wall outlet.
2. Unplug the support surface tubing from the pump.
EN 18 2874-009-002 Rev AA.0