Thermo Scientific 3110 Manuale utente

7270105 Rev. 1

Preventive Maintenance Kit 2270105

3110 Series Water Jacket CO2Incubator

(Models 3110, 3111, 3120, and 3121)

Included in this kit (1 each unless specified):

Tools required:

Common hand tools

Caution These procedures should only be performed by qualified

personnel. ▲

Caution Turn unit off and disconnect it from power before beginning any

maintenance or service procedures. ▲

Note There are two blower scroll configurations available in some

instances. Follow the instructions pertaining to your configuration. ▲

Application

Model

Instruction Sheet

Lithium Grease 1.5 oz. #6 Solid Silicone Stopper

#6 Silicone Stopper, 1-1/4 Silicone Hose, 1/4 D x 1/8 W x 1.1 L

Blower Wheel, 3.5 x 1.5 CCW Silicone Hose, 1/4 D x 1/16 W x 1 L

Blower Wheel, 3.5 x 1.5 CCW “D” Teflon Washer, 0.31 ID x 0.625

Blower Plate Gasket HEPA Filter 5.5 x 1.5

CO2Sensor Gasket Disposable Filter (3)

DCS IR Sensor Plate Gasket 3 x 4 1/4 Hose x 1/4 Hose Connector

Silicone Grommet, 3/8 x 1/4 (2) Corrosion Inhibitor, 800mL

Blind Silicone Grommet, 15/16 (2)

Note There are several parts included in the kit that will not be used in this

application. ▲

1. Locate and remove the access port stopper (Figure 1). Discard.

2. Unfasten the temperature sensor from the clip on the top duct. See

Figure 2. If the unit is equipped with the optional RH sensor, unfasten

it from its clip also.

3. Remove the HEPA filter by pulling it straight down. Discard the filter.

4. Remove the wingnuts securing the top duct to the chamber ceiling.

Carefully slide the duct down and off the temperature sensor (and RH

sensor, if applicable).

5. Remove the air sample

filter and tubing, and

discard. See Figure 3.

6. Remove the blower scroll

secured by four screws.

Retain the scroll and

screws.

Installation -

Release 1 through 3

2 Preventive Maintenance Kit 2270105

Figure 1. Back Corner of Chamber Figure 2. Filter and Sensor Locations

Figure 3. Two Configurations

for Releases 1-3

7. Pull down firmly to remove the blower wheel from the motor shaft.

Discard the blower wheel. Slide the new blower wheel with the round

hole up the motor shaft until the wheel is against the shoulder of the

shaft. Make sure the wheel turns freely.

8. Install the scroll using the four screws retained from Step 6.

9. Replace the blower plate gasket by first removing the five wingnuts and

one hex nut. Then disengage the blower plate from the chamber

ceiling. There may be suction build-up on the plate gasket. Remove the

blower plate gasket and install the new one from the kit.

Note Support the blower plate. Do not allow it to hang from the wiring,

especially the temperature sensor. ▲

10. Install the blower plate. When aligning the mounting holes, all wiring

and tubing must be pushed up into the hole behind the plate to

prevent them from becoming cut or pinched. Install the wingnuts and

the hex nut to secure.

11. Install the new air sample filter and tubing onto the fitting located on

the blower plate. See Figure 3.

12. Check the color of the CO2sensor. If it is brass-colored, it is a T/C

sensor. If it is white-colored, it is an I/R sensor.

• To replace a T/C sensor gasket, first remove the 2 wingnuts and

pull the sensor down. Then pull up on the brown connector to

unplug the sensor. Remove the gasket and install the new one. Be

sure to use the correct gasket from the kit by matching the center

hole diameter. Reconnect the T/C sensor. Note: The brown

connector is keyed. Secure the CO2 sensor with the 2 wingnuts.

• To replace an I/R sensor gasket, first remove the 2 wingnuts and

pull the sensor down. Then disconnect the 2 latches and pull the

sensor off the connector. Remove the gasket and install the new

one. Be sure to use the correct gasket from the kit by matching the

center hole diameter. Reconnect the I/R sensor. Note that the

connection is polarized. Secure the I/R sensor with the 2 wingnuts.

3Preventive Maintenance Kit 2270105

Installation - Release 1

through 3 (continued)

4 Preventive Maintenance Kit 2270105

13. Replace the grommets in the top duct with new ones provided in the

kit.

14. Install the top duct by feeding the temperature sensor (and RH sensor,

if applicable) through the appropriate grommet in the top duct as it is

raised to the chamber ceiling. Be careful not to pull the grommet itself

through the duct. Locate the mounting studs, blower scroll and air

sample filter into the appropriate holes in the duct. Install the wingnuts

to secure the duct (Figure 4).

15. Carefully pull the temperature sensor (and RH sensor, if applicable)

down until it can be fastened into the corresponding clip(s) on the top

duct.

16. Install the new access port stopper.

17. Install the shelves and side duct sheets.

18. Install the new HEPA filter.

19. Plug the incubator in and turn the power switch on. Allow the unit to

run empty for 24 hours, then return to service.

Installation - Release 1

through 3 (continued)

Figure 4. Assembled and Secured with Wingnuts

Note Several parts included in this kit are not used in this application. ▲

1. Remove the shelves and side duct sheets from

the interior of the unit.

2. Remove and discard the access port stopper.

See Figure 5.

3. Unfasten the temperature sensor from the

clip on the top duct. If the unit is equipped

with the optional RH sensor, unfasten it from

its clip. See Figure 4.

4. Remove the HEPA filter by pulling down on it. Discard the filter.

5. Remove the wingnuts securing the top duct to the chamber ceiling.

Carefully slide the top duct down and off the temperature sensor (and

RH sensor, if applicable).

6. Remove and discard the air sample filter and tubing. See Figure 6.

7. Remove the blower scroll by first pushing the black lever closest to you

toward the scroll. Then turn the scroll to the right to disengage it from

the blower scroll plate. Some manipulation may be required as the

alignment holes are keyhole-shaped. See Figure 6. Retain the scroll.

8. Pull down firmly to remove the blower wheel from the motor shaft.

Discard the wheel.

9. Remove the blower scroll plate by first pushing the black lever clip

toward the chamber ceiling. Then turn the scroll plate to the left to

disengage it from the alignment keyholes. See Figure 6.

Installation - Release 4

5Preventive Maintenance Kit 2270105

Figure 5. Back Corner of

Chamber

Figure 6. Air Sample Filter Location

10. Remove and discard the small white Teflon washer from the motor

shaft.

11. Remove the 6 nuts from the blower plate. Disengage the plate from the

chamber ceiling. There may be suction build-up on the plate gasket.

Support the blower plate during this process. Do not allow it hang by

the wiring, especially the temperature sensor.

12. Remove the blower plate gasket and install the new one from the kit.

13. Reinstall the blower plate, securing it with the 6 nuts. When aligning

the mounting holes, all wiring and tubing must be pushed up into the

hole behind the plate to prevent them from being cut or pinched

(Figure 7).

14. Install the new white Teflon washer onto the motor shaft, halfway

between the motor shaft shoulder and the chamber ceiling.

15. Install the blower scroll plate by aligning it with the larger end of the

keyholes and turning it to the left to lock it on. Pull the black lever clip

down from the ceiling.

16. Install the new blower wheel with the round hole onto the motor shaft

until the wheel is against the shoulder of the shaft. Make sure the wheel

turns freely.

17. Insert the 3 plugs (2 smaller) into the appropriate holes in the blower

scroll.

6 Preventive Maintenance Kit 2270105

Installation - Release 4

(continued)

Figure 7. Underside View of Chamber

18. Install the blower scroll over the blower wheel into the larger end of the

keyholes on the blower scroll plate. Turn the scroll to the right to lock

it on. Pull the black lever clip closest to you toward the front of the

unit. See Figure 6.

19. Install the new air sample filter and tubing onto the fitting located on

the blower plate. See Figure 6.

20. Check the color of the CO2sensor. If it is brass-colored, it is a T/C

sensor. If it is white-colored, it is an I/R sensor.

• To replace a T/C sensor gasket, first remove the 2 wingnuts and

pull the sensor down. Then pull up on the brown connector to

unplug the sensor. Remove the gasket and install the new one. Be

sure to use the correct gasket from the kit by matching the center

hole diameter. Reconnect the T/C sensor. Note that the brown

connector is keyed. Secure the CO2sensor with the 2 wingnuts.

• To replace an I/R sensor gasket, first remove the 2 wingnuts and

pull the sensor down. Then disconnect the 2 latches and pull the

sensor off the connector. Remove the gasket and install the new

one. Be sure to use the correct gasket from the kit by matching the

center hole diameter. Reconnect the I/R sensor. Note that the

connection is polarized. Secure the CO2sensor with the 2

wingnuts.

21. Replace the grommets on the top duct with new ones included in this

kit.

22. Install the top duct by feeding the temperature sensor and air sample

filter (and RH sensor, if applicable) through the appropriate holes in

the top duct as it is raised to the chamber ceiling. Be careful not to pull

the grommets through the duct. Insert the left side of the top duct into

the left duct sheet opening. Locate the mounting studs, blower scroll

and air sample filter into their appropriate holes in the top duct. Secure

the top duct with the wingnuts. See Figure 4.

23. Carefully pull the temperature sensor (and RH sensor, if applicable)

down until it can be fastened into the corresponding clip(s) on the top

duct.

7Preventive Maintenance Kit 2270105

Installation - Release 4

(continued)

8 Preventive Maintenance Kit 2270105

24. Install the new access port stopper.

25. Install the shelves and side duct sheets.

26. Install the new HEPA filter.

27. Plug the incubator in and turn on the power switch. Allow the

incubator to run empty for 24 hours and return it to service.

Installation - Release 4

(continued)

9Preventive Maintenance Kit 2270105

Note Several parts included in this kit are not used in this application. ▲

1. Remove the shelves and the side duct sheets from

the interior of the unit.

2. Remove and discard the access port filter

assembly. See Figure 9.

3. Remove the temperature sensors and the air

sample tubing from the back of the blower scroll.

See Figure 10.

4. Remove and discard the air sample filter assembly from the fitting on

the blower plate.

5. If the unit is equipped with the optional RH sensor, unfasten it from

the clip on the top duct. See Figure 10.

6. Remove the HEPA filter by pulling it downward. Discard the filter.

7. Remove the wingnuts securing the top duct to the chamber ceiling.

Slide the duct down and off the temperature sensors and air sample

filter tubing (and RH sensor, if applicable).

8. Remove the blower scroll by first pushing the black lever clip closest to

you toward the scroll. Then turn the blower scroll to the right to

disengage it from the blower scroll plate. Some manipulation may be

required as alignment holes are keyhole-shaped. See Figure 10.

9. Remove the remaining wingnut, then pull down to remove the blower

wheel from the motor shaft. Discard the blower wheel.

Installation -

Release 5, Series II

Figure 9. Back Corner

of Chamber

Figure 10. Two Configurations

10 Preventive Maintenance Kit 2270105

10. Remove the blower scroll plate by first pushing the black lever clip

farthest from you toward the chamber ceiling. Then turn the blower

scroll plate to the left to disengage it from the alignment keyholes

(Figure 11).

11. Remove and discard the white Teflon washer from the motor shaft.

12. Remove the 6 nuts from the blower and disengage the blower plate

from the top of the unit. There may be suction build-up on the blower

plate gasket. Support the blower plate during this process. Do not

allow it to hang from any wiring, especially the temperature sensor.

13. Remove the blower plate gasket and install the new one.

14. Re-install the blower plate, using the 6 nuts. When aligning with the

mounting holes, all wiring and tubing must be pushed up into the hole

behind the plate to prevent them from being cut or pinched.

15. Install the new white Teflon washer onto the motor shaft, halfway

between the shoulder on the motor shaft and the chamber ceiling.

16. Install the blower scroll plate by aligning it with the larger end of the

keyholes and turning it to the left to lock it on. Pull the black lever

clip farthest from you downward from the ceiling.

Installation - Release 5,

Series II (continued)

Figure 11. Underside View of Chamber Ceiling

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