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Pumped back refrigerant for both units on the back side of Alumni Hall. Disconnected High and low Voltage electrical connections on both systems. Cut refrigerant lines and taped around all refrigerant lines to seal. Used wire nuts and electrical tape to seal wiring connections and secured wiring. Will return after construction has been completed in that area to braze units back in, pressure test, evacuate, release refrigerant charge and reconnect electrical.
Tune up for 2 Trane Steam (hydronic) coil air handler systems for C Cottage. Steam pressures good for both air handlers. Voltages and amp draw at disconnects good. Both coils are in good condition. 58 and 55 degree temperature rises for Units 1 and 2 respectively. Found One conductor for blower motor of unit 1 severed. Repaired. I left a voice mail on Mike DeFranks phone notifying him about the price of the repair $69.08. We will return with belts ((2) A40/4L420) [$147.53 ea.]and filters ((4) 20x25x2) [51.29 ea] to complete this tune up. Returned to site to replace Belts and Filters. Replaced Belt on Air Handler #2. Adjusted motor positioning and tested belt tension. Put unit in operation and measured a 132 Supply temperature with a 74 degree return temperature. Could not replace belt for unit #1 due to the belt not being the correct fit. Adjusted motor positioning to accommodate the new Belt but could not position motor to fit the belt properly. Unit is running but, we will return t
Heat tune up for York single stage 80KBTU natural gas furnace. HSI and flame sensor ok. Condition of burners/heat exchanger ok. Gas pressure ok. Electric motors and components ok. 60F temp rise. Combustion test ok. Furnace is working well at the time of this maintenance/tune up. Heat tune up for 3 Ton York Heat Pump system, Replaced filter. 30F temp rise with outdoor air temp of 39F. Aux Heat ok. All electric motors ok. Compressor amp draw 4.45 ok. Heat pump is working well at the time of this tune up/maintenance.
Preformed heat tune up, replace 1 20x20x1 filter, checked cap, and temperature rise. Tested thermostat, and made sure hydronic coil was working properly. All checked out good.
Checked belts for where and tear, they are in good shape still. Air filters were changed, tested out thermostats and temperatures rise, all in good working order. Filter size 2 20x20x1 merv 8
Unable to perform tune up; dorm manager is under quarantine for Covid 19. We will perform heat tune up at the time of the cooling tune up in the spring.
Heat tune up for 140K BTU single stage natural gas Amana furnace. Replaced 16x24x1 filter. Cleaned flame sensor. HSI in good condition 44.5 Ohms ok; Gas pressure ok. Pressure switch and inducer components ok. Electric motors and components ok. 55F temp rise. Combustion test/visual inspection of heat exchanger proves integrity of heat exchanger. The basement slab floor surrounding furnace was wet upon arrival. 40K BTU 40 gallon water heater appears to be leaking or experiencing high pressures causing relief valve to engage. The furnace is working well at the time of this maintenance.
Heat tune up for Trane mini split system. Outdoor Coil in good condition. Voltages ok. Cleaned indoor unit filters and verified tstat operation. Temp rises 40; 42; 47. Cleaned indoor unit housing/hardware.
Preformed 3 heat ups in the machine shop, replaced 3 filters and cleaned 2 mini split filters. All working properly and belts in good shape.
Maintenance for 3 Ton mini split system that conditions the IT or server room. 25F temp rise with outdoor Air temp of 41F. Outdoor Voltage 212. Compressor amp draw OK. Filters were cleaned/ well maintained. Thermostat operation ok. System is working well at the time of this maintenance.
Performed heating maintenance on gas boiler. Cleaned burners and pilot burner. Inspected heat exchanger. Checked voltage, amperage and electrical connections. Started boiler, tested limit and safety switches. Measured fuel pressures. Performed combustion test. Checked boiler pressure and temperature.
Performed cooling maintenance on server air conditioner, cleaned air filters. Checked v, amperage and electrical connections. Started air conditioner, checked refrigerant charge and temperature drop across coil.
Performed maintenance on mini split with 5 heads, cleaned all air filters. Checked v, amperage and electrical connections. Checked for codes. All clear. Cycled all zones in the heat mode. Serviced air handler for Coryâ€™s office, replaced air filter. Checked voltage, amperage and electrical connections, measured capacitor values. Replaced air filter and cycled heat. Serviced furnace in addition, checked media air filter ok. Blew out condensate trap and drain. Checked voltage, amperage and electrical connections. Cleaned burners and flame sensor, inspected heat exchanger. Started gas furnace, measured fuel pressures. Performed combustion test. Checked operation and temperature rise.
Checked no heat complaint, found no call from thermostat, found thermostat lost connection between r and w. Replaced thermostat. Setup new thermostat. Cycled heat and air conditioner. Set thermostat to heat and 68 degrees.
Performed Precision heating tune up on Gas Furnace. Replaced 20x25x1 Air Filter. Inspected Heat Exchanger from access panel in supply plenum. Found Heat Exchanger is very rusted on the outer walls and inside the Heat Exchanger chambers as well. Did not see any cracks or spots where the rust ate through the Walls. Heat Exchanger is in poor working condition and the Furnace should be replaced before failure of the heat exchanger occurs. Tested electrical components on system and performed Combustion Analysis on Furnace. Measured Air Temperature readings on system. The Gas Furnace is about 32-33 Years old. Due to the age and the concern for the heat exchanger, would recommend replacement of the Gas Furnace before any issues occur.