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MAINTENANCE
1. Inspect the system annually to ensure proper operation by observing that the fan activates when a call for
heat occurs and deactivates when the call for heat is satisfi ed.
2. Disconnect power to the CAS unit and repeat Step 1. Note: The unit should not run and the appliance
should not fi re in this condition.
3. Inspect the duct pipe for cracks and security to the CAS unit and vent hood.
4. Clear any obstructions, if present, from the inlet of the vent hood and the outlet of the CAS unit.
5. Periodically, the fan blade chamber may need cleaning. First, disconnect the power supply to the CAS.
Next, disconnect the duct pipe from the unit. Then remove the top pan and clean the fan housing area as
needed. Reattach the top pan, reconnect the duct pipe and the power supply.
REPLACEMENT PARTS
The following items are available for replacement, if
needed. In order to replace these parts, power must be
disconnected and the unit must be partially disassem-
bled. If this is necessary, take note of the positions and
locations of whatever items that may need to be removed
to replace other items. If in doubt, please consult Field
Controls Technical Support at 1-800-742-8368.
This manual may be downloaded and printed from the Field Controls website (www.fi eldcontrols.com)
This manual may be downloaded and printed from the Field Controls website (www.fi eldcontrols.com)
For warranty information about this or any Field Controls product, visit:
For warranty information about this or any Field Controls product, visit:
© Field Controls, LLC
WARRANTY
WARRANTY
www.fi eldcontrols.com
www.fi eldcontrols.com
Field Controls Technical Support
Field Controls Technical Support
1.800.742.8368
1.800.742.8368
fi eldtec@fi eldcontrols.com
fi eldtec@fi eldcontrols.com
Phone: 252.522.3031 • Fax: 252.522.0214
www.fieldcontrols.com
ITEM DESCRIPTION
Motor, DI-1
Fan Blade Assembly
Air Pressure Switch
24 VAC Relay for CAS-4
4" Intake Hood
6" Intake Hood (not included)
P/N 46527900 Rev C 03/17
FIELD PART NUMBER
46070100
46528500
46525700
46161400
46252600
46233300
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