Service Manual

19
UPV75 SERVICE PROCEDURE III
Pressure Switch Testing and Replacement
UPV75 Series
19
Pressure Switch Testing
Step 1. Position power switch on gas
control to the “OFF” position.
Step 2. Remove the three screws (Phillip’s screw driver) from control access cover
on blower assembly and remove cover (see photo 1).
Step 3. Carefully remove pressure switch from blower housing (see photo 2).
WARNING
115 volt potential exposure.
Use caution to avoid personal injury.