8-6 SERHT50NA A0808
ELECTRONIC & PNEUMATIC COMPONENT REMOVAL & REPLACEMENT
NOTE: Before installing the new Pump Assembly, make certain
the diaphragm in the new pump is clean and is properly seated in
the pump housing counterbore.
8. Before installing the new Pump Assembly, refer to Figure 9-5.
Make certain to attach each tube to the identical connector on
the new solenoid.
9. Install replacement Pump Assembly by reversing steps 2
through 7.
NOTE: When sliding the Muffler Assembly (#13) back into place,
open the air intak
e filter cover (8) and make certain that the end of
the muffler is flush with the ventilator housing. This will minimize the
possibility of a leak around either Muffler connection.
10. Remove Front Panel Assembly per Front Panel Board
Replacement in this section.
11. Verify the silicone tube (#12) covers the Muffler Assembly
(#13) and the air intake connector on the side pane (#5).
12. Reinstall the Front Panel Assembly.
13. Re-assemble the ventilator per instructions on pg. 8-2.
Setting “Next Service Due Meter”
After replacing the pump assembly due to the 10,000 hour
maintenance or for any reason, it is necessary to properly set the
next service due meter. Follow these steps:
1. Record the current hours meter reading.
2. Connect the HT50 to the computer with the PCS download
program via the communication cable P/N V23-00001-29.
3. Connect the HT50 to an AC power source.
4. Start the PCS download program.
5. Select the project (current version is 1.071, however, yours may
be different)
6. The tables in the PCS download program will fill up with
information from the HT50 Ventilator.
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