140.010-IOM (NOV 2019)
Page 29
IDSC EVAPORATIVE CONDENSERS
MAINTENANCE
Maintenance
Table 9: Inspection and maintenance frequencies
Type of
action
Action step
Start-
up
Monthly Quarterly Annually Shutdown
Inspect and
clean as
required
Inspect the general condition of units
X
X
X
Clean the basin strainer
X
X
X
Clean and flush the cold water basin
X
X
X
Drain the cold water basin and all water piping
X
Flush the water distribution system
X
X
Inspect water spray nozzles and confirm a uniform
distribution
X
X
Inspect inlet louvers
X
X
X
Inspect bleed rate and adjust if required
X
X
Check the operating level of water in the basin and
adjust if necessary
X
X
Inspect drift eliminators
X
X
Inspect the coil
X
X
Inspect fan guards for any dirt or debris
X
X
X
Clean the exterior of unit
X
X
Test water quality to ensure there is no biological
contamination
X
X
X
X
Confirm water treatment specialist has a fixed
program in place
X
X
X
X
Inspect
mechanical
components
as required
Inspect fan motors and impellers for any noise or
vibration
X
X
Confirm correct rotation of impellers
X
X
Confirm impellers rotate freely and have no
obstructions
X
X
Confirm correct rotation of water distribution pump
X
X
Check all motor amperages against nameplate amps
(FLA)
X
X
Check all voltages
X
X
Inspect all electrical junction boxes for loose wiring
and moisture
X
X
X
Options and
accessories
Inspect the basin heater thermostat operation and set
point
X
X
Inspect for scale buildup on basin heater elements
X
X
Inspect the electronic water level controller and clean
probe ends
X
X
Clean the internal portion of the stand pipe
X
X
X
Inspect and clean the water make-up solenoid valve
X
X
X
Inspect all electrical junction boxes for loose wiring
and moisture
X
X
X
Note:
Maintenance frequencies are suggested for installations with normal operating conditions. Aggressive or severe envi-
ronmental conditions could require maintenance frequencies to be increased. Industrial or chemical fumes, salt, dust,
and any unusual airborne contaminates are absorbed into the recirculated water system which could form solutions
and deposits and be harmful to the unit.
