Checked Rtu's #1, #10 and #26 for no heat. Found the relay board failed in Rtu #1, replaced the board with a site stocked board. Found a mudd daubers nest blocking the inducer motor in Rtu #10. Removed the nest. Found a mudd daubers nest blocking the inducer in Rtu #26. Removed the nest. Verified operation of all units after repairs.
Checked Changeair units #6, #10 and #16 for the Grade school for no cool from yesterday. Found the economizers disabled to a 10% setpoint causing no mechanical cooling. Released the overrides in the Trane Tracer system. Verified operation after repairs by allowing the units to cycle at the setpoints.
Checked the #3 Changeair unit for Mrs. Epps grade school classroom for no operation. Found the breaker tripped in the main panel and six fuses blown in the unit due to water getting into the fuse block. Replaced the fuse block, the fuses and reset the breaker. Started the unit, checked operation and for the cause of the water damage. Found the blower fan over ramping from the Trane ems causing the condensation to be lifted off the evaporator into the electrical section. Ajusted the speed control in the Trane ems to the Changeair specs. Verified operation. All parts used were site stocked and the schools property.
Checked the Changeair unit #3 for Mrs. Epps room for no operation. Found two fuses blown to the Ecm condenser fan motor and the control transformer due to a shorted plugged connector. Bypassed the connector. Replaced the fuses with customer provided fuses. Started the unit and verified operation. Also checked the Ahu #1 and #2 for the grade school gym for condensate leak. Found the West air handler with the evaporator froze up causing the complaint. Disabled the two units to allow for deicing. Will return to check the two units after deicing.
Checked the two Northwest split system air handlers for condensate leak from the previous day. Found both units running normal with no leaks. Found the fan control in "on" from the Trane ems for both units. Released the override to cycle blower mode. Condensate traps were possibily dry with the fans in continuious causing the pans to overflow. Larry advised that the units drained out when he turned both off yesterday.
Replaced the condenser fan motor in the Trane split system #5 for Mrs. Woods classroom in the annex building. Verified the evaporator split on the grade school entry Rtu #26 and the Rtu #3 for the high school. Found the repairs needed during the Pm.
Finished the Pm. The corrected filter list of the filters used is-----(3)-20x20x2--(38)-18x18x2--(39)-16x25x1--(24)-14x25x2--(25)-16x25x2--(32)-20x30x2--(15)-20x25x2--(2)-18x25x2--(2)-20x35x2.
Worked on the Pm. Not complete.
Performed planed maintenance
Worked on the Pm. Not complete
Worked on the pm. Not complete.
Started the Pm on the 75 + units
Checked the Trane split for the Annex board room for no cool, customer complaint that the sysytem will not turn on from the room thermostat. Found the room thermostat failed. Replaced the thermostat. Started the system and found the blower and condenser on with the compressor off. Checked the compressor curcuit and found the compressor run capacitor failed open. Replaced the capacitor. Started the system and checked the split. Found the split 16-17 degrees. Checked the charge and added one pound of R-22. Rechecked the split after adding refrigerant and found a normal split of 20 degrees.
Checked heat pumps #6, #13 and #18 for the grade school for no cool. Found #6 off due to blown fuses to the transformer supply. Found the connector shorted to the transformer causing the fuse failure. Bypassed the connector, replaced the fuses and verified operation. Found #13 running normal after the condensate drain was cleared. Found #18 with the compressor off due to the low pressure curcuit being open. Found a wire pulled out of the low pressure switch connector. Repaired the wire and verified operation.