7 - 2
7.3 Cleaning the Humidity System
Make sure power is on and the RH setpoint has been
changed from factory default.
1. Open outer chamber door.
2. Open the access door located on the front of the unit,
below the control panel.
3. Locate the humidity system drain fitting attached to the
bottom of this door. See Figure 1-11.
4. Install the hose barb end of this fitting to the supplied
tubing and route to a drain or suitable 1.5 gallon con-
tainer.
5. Connect the other end of the fitting to the quick-connect
drain located below the fold-down storage door. See
Figure 7-1. Allow water to drain. This may take a few
minutes.
6. Turn power off.
7. Attached to the bottom of the water bottle is a length of
tubing and low voltage wiring (Figure 7-2). Disconnect
the tubing by pressing inward on the collar where the
tubing connects to the bottle. Pull the tubing free.
Disengage the wiring at the connector.
8. Lift the water bottle from the bottle platform. Empty any
water out of the bottle.
9. Replace the filter in the lid by
first unscrewing the clear plas-
tic nut on the outside of the lid.
Catch the filter as it loosens
from the inside of the lid.
Remove the small black o-ring
from the filter and discard the
filter. Assemble this o-ring onto
the new filter and install as pre-
viously. Tighten the plastic nut
only finger-tight to prevent stripping.
9. Clean the humidity bottle and lid with soap and water
and a general-use laboratory disinfectant. Rinse with
sterile water and spray with 70% alcohol.
Steri-Cult Incubator ______________________________________________________________________Maintenance
10. Also behind the access door is
the humidifier. See Figure 7-4.
Lift the latches on both sides of
this small unit.
11. Separate the top and bottom sec-
tions. Carefully clean the inside
of both sections and spray with
70% alcohol.
Do not touch the metal disk in the bottom of the
humidifier with bare fingers as any fingerprints or
other residue can affect humidity recovery.
14. Reinstall the top section of the humidifier. Fasten the
latches on each side.
15. Reconnect the tubing and wiring to the water bottle as
previously.
7.4 HEPA Filter Maintenance
Replace the HEPA filter when the REPLACE HEPA
reminder is displayed, or after each Sterilization cycle. The
REPLACE HEPA reminder can be set to alarm after a specified
time from 1 to 12 months. The reminder default is the factory
recommended setting of 6 months. For details on setting the
reminder, see Sections 4.1c.
Replace the HEPA filter (Figure 7-5) using the steps below.
1. Locate and loosen the two large wingnuts in the top of
the inner chamber. Slide the filter bracket toward the
chamber opening until the filter swings down.
2. Lift the back edge of the HEPA filter until it unhooks
from the metal lip in the back of the chamber. Discard
the filter.
3. Install a new HEPA by first hooking the back edge of the
filter as previously.
4. After the back edge is hooked, lift the front of the HEPA
to the top of the chamber. Slide the filter bracket over the
HEPA frame to secure it. Tighten the two wingnuts.
Figure 7-2
Figure 7-1
Figure 7-4
Figure 7-3
