CAIR
plus
Commissioning and Maintenance
PR-2009-0096-GB • Subject to modifications • R8-10/2015
73
8.7
Cooler assembly
8.7.1 Commissioning of cooler assembly with/without droplet separator
DANGER!
•
Please consider the
safety instructions
on page 5 and page 55ff when performing
all the described activities
!
Complete the following commissioning steps:
•
Clean coil drip tray and drain piping.
•
Fill trap with water, refer to „Water drain trapping“ on page 45; as a minimum
requirement, the hydraulic seal of the trap must always correspond to the positive or
negative pressure of the unit.
For droplet separator
Droplet separator (DS) reaches its full capacity following a start-up phase of 4 weeks
once the separating agent volatizes.
•
If necessary, rinse the droplet separator with water.
•
Dust with lime if necessary.
In case of insufficient performance of droplet separator:
•
Inspect droplet separator for correct installation position.
•
Check airflow velocity in droplet separator.
DS standard w
max
=3.8 m/s
DS 100 high performance w
max
=5.8 m/s
8.7.2 Maintenance of cooler assembly with/without droplet separator
DANGER!
•
Please consider the
safety instructions
on page 5 and page 55ff when performing
all the described activities
!
Carry out the following maintenance steps:
•
Check for leak-free condition and possible dirt on the air side.
•
To ensure frost protection, periodically check the safety devices and take proper
precautions such as draining the equipment or adding antifreeze agents.
•
Ensure that pipework connections and mountings are securely fixed.
•
If necessary clean the coil on the air side (blow out with compressed air or low-
pressure water).
•
Air vent.
•
Clean coil drip tray and drain piping.
•
Check trap for proper operation, top up as necessary.
•
Clean droplet separator with a descaling spray.
ELECTRICAL HAZARD AND DANGER OF ROTATING UNIT PARTS WITH
SHARP EDGES!
•
OBSERVE PERSONAL PROTECTION MEASURES
•
Please consider the safety instructions on page 5 and page 55ff when
performing all the described activities!
Notice!
Have qualified and licensed refrigeration engineers from certified and authorized
appointed contractors perform the following procedures and possible service jobs!
Observe the relevant standards and legal regulations regarding refrigerants.
