Union Instruments CWD2005 SPC, Original Operating Instructions

Page: 93 / 110

Maintenance
93
Check
Interval
(recommended)
After commissioning
Check and, if necessary, update the firmware version. As required
Store the current configuration As required
Semi-annual check
Check air filter for contamination/clogging. Every 6 months
Perform calibration (at shorter intervals depending on accuracy re-
quirements)
As required
Check tube connection to the density measuring cell/sensors for
porosity.
Every 6 months
Check membrane on the gas pressure controller for porosity or lack
of elasticity.
Every 6 months
Remove
2
/clean
3
thermoelectric battery and heat exchanger. Every 6 months
Replace the seal on the heat exchanger. Every 6 months
Check the fan. Every 6 months
Check the air intake filter (ambient air inlet, fan filter mat). Every 6 months
Clean
4
the gas and air nozzles Change O-rings, if necessary. Every 6 months
Annual check
Replace air filter. Annually
Replace neoprene tubes inside the combustion calorimeter. Annually
Clean the complete system. Annually
Additional information:

Included documents
2
Flow plates are attached on the side of the thermoelectric battery and in the thermal elements of the
combustion calorimeter. The flow plates must not be twisted when removing the thermoelectric bat-
tery. The thermoelectric battery must be pulled out as far as possible and then tilted to the side.
3 Cleaning of the heat exchanger with water followed by thorough drying of the cleaned components.
4
Clean the nozzles using a volatile solvent.