8-8 SERHT50NA A0808
4. Install the new Outlet Assembly, making certain the o-ring seal
and the humidifier’s heater wires (HT50-H only) are within the
counterbore of the Outlet Assembly so that neither are pinched
by the Outlet Assembly when securing it to the ventilator
housing.
5. Reverse steps 1 through 3 to reassemble.
HUMIDIFIER HEATER ASSEMBLY REPLACEMENT (HT50-H ONLY)
Refer to drawing Figure 9-1, Internal View.
The Humidifier Heater Assembly should be replaced if:
• the humidifier chamber is securely fastened but the safety
thermostat activates, turning the heater off.
• the assembly is cracked or physically damaged.
• the heater plate does not rise and activate the safety switch
beneath it when the humidifier chamber is removed.
1. Follow steps 1 through 3 in the previous Outlet Assembly
Replacement section.
2. Remove the two (2) #10 torx screws (#27) that secure the
Humidifier Heater Assembly to the ventilator housing.
3. Disconnect the humidifier heater’s wiring assembly connector
from the Main PCB by pressing the release tab on the
connector. Pull the connector out through the hole in the
ventilator housing to remove the old Assembly
4. Place the connector of the new Humidifier Heater Assembly
through the hole in the ventilator housing.
5. Place the Outlet Assembly (#30) over the heater assembly’s
wiring harness, making certain that it is not pinched and that
the o-ring seal of the Outlet Assembly is properly in place.
6. Secure the Outlet Assembly to the ventilator housing with 2 ea.
#10 torx screws (#31).
7. Secure the Humidifier Heater Assembly to the ventilator
housing with two (2) #10 torx screws (#27).
8. Reattach the wiring harness connector to the Main PCB.
9. Reverse step 1 to reassemble.
ELECTRONIC & PNEUMATIC COMPONENT REMOVAL & REPLACEMENT
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