SECTION 8
SERHT50NA A0808 8-7
7. Locate the label
“NextService”.
8. Press the download button in the upper right corner of the PCS
download program.
9. A window will show the progress of the download. While the
software is being downloaded, select and highlight the
“NextService” label. Change the number according to the hour
meter reading and press the enter key.
NOTE: The “NextService” number comes from the factory set to
10.
This indicates the “Service Needed” message will appear when
the HT50 hour meter reading equals 10,000 hours. If the motor
pump was replaced at 10,000 hours, the “NextService” number
should be changed to 20. If the motor pump was replaced at 7,500
hours, the “NextService” number should be changed to 17.5.
10. Do not remove the communication cable or close the PCS
download program until these 3 END of download criteria have
been met.
1. The program has completed the download.
2. The green LED for external power is illuminated.
3. The bottom of the PCS download program displays the
message “Done Downloading Data”
OUTLET ASSEMBLY REPLACEMENT
Refer to drawing Figure 9-1, Internal View and Figure 9-5 Main
Board Tubing Connections.
NOTE: The outlet assemblies are different between the HT50-H
and HT50-H1 models.
The Outlet Assemb
ly should be replaced if:
• Damage to either of the 3 connectors is visible.
• Emergency Intake Valve is leaking (rear of outlet block).
• Pressure Relief Valve is leaking at low pressure (bottom of
outlet block).
1. Follow steps 1 through 7 of the PUMP ASSEMBLY
REPLACEMENT section.
2. Remove the four (4) silicone tubes attached to the Outlet
Assembly, marking them to avoid improper reattachment.
3. Remove the two (2) #10 torx screws (#31) which secure the
Outlet Assembly to the ventilator housing.
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