natus Olympic Warmette 48, Instruction Manual, Page: 41 / 50

Olympic Warmette Models 48/49 and 55/56 Instruction Manual 6-11
Repair Procedures
Replacing the Thermal Cut-out
If the thermal cut-out does not function properly (see Testing the Thermal Cut-out
Function on page 4-4), replace the component by performing this procedure.
Required Items:
„
Thermal cut-out (part no. 200051)
„
1/4-in. nutdriver
To remove the thermal cut-out:
1
Press the power switch to the
OFF
(O) position, then unplug the power cord.
2
Remove the upper white door seal and loosen — but do not remove — the screws
inside the door, behind the door stop (see Removing the Access Panel on
page 6-3).
3
Pull out and remove the front panel (see Figure 6.4 on page 6-9).
4
Unhook, remove, and set aside the plenum hold-down springs. Next, disconnect
the thermal cut-out wires (see Figure 6.5 on page 6-10).
5
Separate the plenum from the filter case.
6
Locate and remove the screws and kep nuts attaching the failed thermal cut-out
to the plenum assembly. Set aside the screws and kep nuts.
To place the new thermal cut-out:
1
Place the new thermal cut-out, then attach with screws and kep nuts.
2
Reinstall the plenum, taking care to fully seat the plenum and filter. Install the
plenum hold-down springs and reconnect the thermal cut-out wires.
3
Verify the correct function of the thermal cut-out (see Testing the Thermal
Cut-out Function on page 4-4).
4
Reinstall the front panel.
5
Test the Warmette for proper operation (see on page 2-5).
CAUTION
Electrical shock hazard when the front panel is removed.