Forma Series II 3110 Water-Jacketed co2 Incubators User Manual

5-2
Water Jacketed CO
2
Incubator
Thermo Scientific
Section 5
Routine Maintenance
3. Remove the filter from the air sample filter tubing. Carefully pull down
and remove the HEPA filter. 
4. Remove the wingnuts securing the top duct to the interior. Carefully
slide the top duct down and off the temperature sensor, air sample
filter tubing (and RH sensor, if applicable). 
5. Wash the shelves, ducts, wingnuts and stopper with disinfectant and
rinse with sterile water. Option: Autoclave shelves, ducts and wingnuts.
6. Remove the blower scroll by first pushing the black lever clip 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. 
7. Remove the remaining wingnut, then pull down on the blower wheel.
If a new wheel and scroll are to be used, discard the old ones. If  the
old ones are to be reused, wash all parts with disinfectant and rinse
with sterile water. 
8. Remove the blower scroll plate by first pushing the black lever clip
toward the chamber ceiling. Then turn the plate to the left to disengage
it from the alignment keyholes. Clean as above, or autoclave.
9. Wash the cabinet interior with disinfectant starting at the top and
working down. Wash the inner door both inside and out. The cabinet
and door must be rinsed with sterile water until the disinfectant has
been removed. After the cabinet has been rinsed, spray with 70%
alcohol.
10. Reinstall 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
downward from the ceiling.
11. Install the blower wheel onto the motor shaft,
aligning the d-shaped flat sides of each. See Figure
5-2. Secure the blower wheel with the wingnut.
Make sure the wheel turns freely.  
12. Locate the blower scroll over the blower wheel into
the larger end of the keyholes on the scroll plate.
Turn the scroll to the right to lock it into the
keyholes. Pull the black lever clip closest to you
toward the front of the unit. 
Figure 5-2. Align
Cleaning the Interior
(continued)

---

13. Install the top duct by feeding the
temperature sensors, air sample
tubing (and RH sensor, if applicable)
through the appropriate holes in the
duct as it is raised to the top of the
chamber. Be careful not to pull the
grommets through the duct. See
Figure 5-3. 
14. Locate the mounting studs and blower scroll into the appropriate holes
in the top duct and install the wingnuts to secure the duct.
15. Install the air sample filter onto the top duct tubing. 
16. Carefully pull the temperature sensors and air sample filter tubing
down until they can be inserted approximately 1 inch into the
appropriate holes in the back of the blower scroll. If applicable, place
the optional RH sensor into the corresponding clip on the top duct.
See Figure 5-4.
17. Install the HEPA Filter.
18. Install the left and right ducts, and the access port stopper with filter,
spraying each with 70% alcohol (do not saturate).  
19. Install the shelves and spray with 70% alcohol.
20. Plug the incubator in and turn the power switch on. Allow the unit to
run empty for 24 hours before returning to service.
Water Jacketed CO
2
Incubator        5-3
Thermo Scientific
Section 5
Routine Maintenance
Figure 5-3. Feed Through Holes
Figure 5-4. Underside View of Chamber Ceiling
Cleaning the Interior
(continued)

---

Cleaning Humidity
Pan
Reversing Hinges for
Exterior Door
Reversing the Door
Swing
Clean the incubator exterior with a damp sponge or soft, well-wrung cloth
and mild detergent dissolved in water. Dry with a soft cloth.
Clean the humidity pan with soap and water and a general use laboratory
disinfectant.  Rinse with sterile water and spray with 70% alcohol. The
humidity pan may  be autoclaved. 
For side-by-side operation or changing lab layouts, the inner and outer
doors are field-reversible. The procedure is written from the prospective of
changing the door swing from a left-hand to a right-hand swing. All screw
holes are pre-drilled for reversing the door. The tools required are a Phillips
and a flatblade screwdriver.     
Warning If the units have been in service, disconnect the power cord
connector before reversing the door swing. 
▲
1. Referring to Illustration A following, open the outer door and remove
it by lifting it off the hinge pins. Lay this door down on its face on a
padded surface to prevent scratches.
2. Remove the two outer door hinges identified in the illustration.
3. Remove the four nylon screws from what will be the new locations for
the inner door hinges.
4. With the Phillips screwdriver, remove and save the four nylon screws
from the outer door hinge mounting holes on the right side of the door
frame. 
5. Remove the electrical connector on the top of the inner door hinge by
carefully prying up the black strain relief. 
5-4
Water Jacketed CO2 Incubator
Thermo Scientific
Section 5
Routine Maintenance
Cleaning Cabinet
Exterior

---

6. Refer to Figure 5-5.  The heater
wiring connector is of yellow
rubber which should be visible
when the strain relief is moved
upward as shown. See
connector manufacturer’s
instructions in Appendix A of
this manual.
7. Grasp the upper portion of the
yellow connector and pull it up
and out of the hinge socket.
8. Remove the inner door upper
hinge.  This hinge will be
inverted and become the lower inner door hinge when the hardware is
reassembled. When removing the door, set it aside on a flat surface,
taking care not to damage the electrical sockets on the top and bottom
of the door frame. At this time, remove the 5/8” black plastic bushing
from the hinge. This bushing will be inserted in the top hinge when
the door is installed on the right side of the cabinet.
Warning The frame along the hinge side of the inner glass door has
electrical connectors mounted on the frame at both the top and bottom of
the door. Be careful not to damage the connectors by resting the weight of
the door on them. Place the inner glass door on a flat surface where it
cannot be damaged before moving on to the next step. 
▲
9. Remove the lower inner door hinge. Note that this hinge will be
inverted and become the upper inner door hinge when the hardware is
reassembled. Also, remove the 1” long white plastic bushing from the
center of the hinge and insert it into the hinge removed in step above. 
10. The shoulder of the bushing must be on top as shown in Illustration
B. Install the black plastic bushing into the hinge just removed and
which will be the top hinge when the door is reversed. See Figure 5-5.
11. Remove the two nylon screws opposite the door latch.
12. Remove the door strike plate and install the two nylon screws just
removed (Step 11) into the vacant holes.
13. Remove the two outer Phillips screws on the frame just beneath the
control panel. Remove only the two outer screws and pull the
electronics tray out about one inch.
Water Jacketed CO2 Incubator        5-5
Thermo Scientific
Section 5
Routine Maintenance
Figure 5-5. Connector
Reversing Hinges for
Exterior Door (continued)

---