Hot Water System Equipment Preventive Maintenance

✓    Functional test
✓    Combustion adjustment
✓    Inspect blower motor
✓    Fuel pipe leakage check
✓    Inspect and lubricate the modulation motor arms
✓    Inspect ignition system and safety control, clean and adjust as needed
✓    Check burner control logic
✓    Inspect control box, electrical wiring and connections
✓    Safety device function test
✓    Fire tube and chamber cleaning
✓    Water tube cleaning 
✓    Boiler water quality analysis
✓    3^rd party survey test with boiler certificate
✓    Renew certificate of Safety Valve
✓    Assist Government for boiler testing

✓    Functional test
✓    Refrigerant leaks check
✓    Refrigerant charge
✓    Compressor pressure check
✓    Insulation megger test
✓    Evaporator cleaning
✓    Inspect fan motor and fan blades, lubricate as needed
✓    Inspect control box, electrical wiring and connections
✓    Inspect evaporator coil, condensate drain lines, clean as needed

✓    Functional test
✓    Inspect heat exchanger leaks
✓    Inspect and record heat exchanger temperature and pressure on both sides
✓    Heat exchanger efficiency analysis
✓    Heat exchanger plates cleaning, gasket replace as needed
✓    Inspect pipework leaks
✓    Check insulation and cladding, repair as needed
✓    Inspect temperature and pressure gauge 
✓    Inspect pump start and stop sequence
✓    Fault signal test
✓    Insulation megger test
✓    Inspect control box, electrical wiring and connections

✓    Functional test
✓    Inspect temperature control logic
✓    Check emergency stop function
✓    Check safety device lockout
✓    Check steps control sequence
✓    Inspect control box, electrical wiring and connections
✓    Insulation megger test
✓    Tank and heater surface cleaning

✓    Inspect pump start and stop sequence
✓    Check interlock function
✓    Check changeover function
✓    Check for any abnormal noises
✓    Inspect all pipework and flexible connection for leakage
✓    Test overload protection
✓    Insulation megger test
✓    Inspect control box, electrical wiring and connections

✓    Check softener tank and brine tank leaks
✓    Check the physical condition of water supply & drain pipeline
✓    Check level of brine tank
✓    Test and record the hardness of inlet and outlet water
✓    Check sequence of softener regeneration
✓    Inspect brine tank brine level
✓    Inspect brine injection set

✓    Check chemical tank for leaks
✓    Check chemical feed pump
✓    Water analysis, adjust pump inject interval as needed
✓    Inspect feed pipe if blocked
✓    Inspect chemical tank level
✓    Inspect chemical concentration, adjust as needed