User Guide
MES 1003 WMS
Doc no. 100837-MAN – Rev. E1 – Rev. date 2022-10
© Danfoss IXA A/S | Page 30
5.2.1.
Maintenance Tasks
Maintenance task
Frequency
Who
What (how)
Check LCP for alarms
Weekly
Crew
Go to the WAU and:
Check display for alarms. Alarm list and
troubleshooting guide is described in 5.5
Visual inspection
Biweekly
Crew
Go to the WAU and SU:
Check for mechanical damage
Check flanges, bolts, screw fittings, etc.
Check for leakage
Also check the piping for the WMS system for any
leakages
pH sensor calibration
Monthly
Crew
Go to the WAU and:
Calibrate the pH sensor using the dedicated
buffer solutions
Cleaning
- Measurement chamber
- Sensors
Every 3 months
Crew
Go to the WAU and:
Clean the measurement chamber
Clean the sensors
Clean SU inlet filter
Every 3 months
Crew
Go to the SU and:
Clean the SU inlet filter
Inspect WSU pump (if
applicable)
Every 3 months
Crew
Go to the WSU and:
Check for leakages from shaft sealing and
from pump cover plate.
Check condition of pump impeller, shaft
sealing, pump shaft, pump cover plate and O-
ring for pump cover plate.
Replace worn out parts as necessary.
Replace salt bridge and
electrolyte in pH sensor
Every 12 months
Crew
Go to the WAU and:
Replace salt bridge and electrolyte in pH
sensor
Turbidity sensor
calibration
Every 24 months
Crew
Go to the WAU and:
Calibrate Turbidity sensor using the
dedicated calibration tool
PAH sensor calibration
Every 24 months
Crew
Go to the WAU and:
Calibrate the PAH sensor using the dedicated
calibration tool
Replace PAH sensor lamp
Every 48 months
Supplier
Go to the WAU and:
Note the serial number of the WAU and
contact [email protected] to arrange
replacement of the PAH sensor.
Disconnect and remove PAH sensor.
Make sure that both the PAH sensor and it’s
paired DryCAL-set are shipped back to the
WMS supplier for lamp replacement.
Table 20: Maintenance Tasks