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PG2021 Global HAHU-VP-ECM-005
B . 6 .
U n i t O p e r a t i o n
1.
Confirm air has been properly bled from and there is waterflow through the coil.
2.
Confirm fan wheel is rotating and air is discharged at unit supply opening.
3.
Confirm power voltage between Terminals L1 and N.
4.
Confirm thermostat voltage (24V or 12V).
5.
Verify desired fan speed is receiving power from the thermostat.
6.
Check functionality of motor with a call for heating or cooling.
7.
Confirm system ESP is per schedule.
8.
Confirm control valve(s) functionality.
C.
Maintenance
C . 1 .
G e n e r a l M a i n t e n a n c e
1.
Installation and maintenance should be performed by qualified personnel who are familiar with local codes and regulations,
and are also experienced with this type of appliance.
2.
Confirm that the unit has been switched OFF before installing or servicing the unit.
3.
A good general maintenance plan will prevent damage to and unexpected shutting down of the equipment.
4.
Dirty filters reduce air flow as well as unit performance. Therefore, changing or cleaning the filters is important. Check the
cleanliness of the filter and replace or clean as required monthly.
5.
Coils should be cleaned with compressed air or water to remove dust, dirt or lint. They can be brushed with a soft brush
or vacuumed with a vacuum cleaner.
6.
If the water coil is not being used during the winter season it should be drained, or an anti-freezing solution should be
added to the water circuit to avoid freezing.
C . 2 .
R e g u l a r M a i n t e n a n c e
1.
Inspect and clean the condensate drain pan to avoid any clogging of the drain by dirt, dust, etc. Inspect drainage piping to
ensure the proper condensate flow.
2.
Check and clean the coil. Clean the coils with a low-pressure water jet or low-pressure air.
3.
Clean and tighten all the wiring connections.
4.
Drain out the water system and check for buildup of mineral deposits.
C . 3 .
F i l t e r C l e a n i n g
1.
Remove the filter from the bottom
2.
Clean the filter with a brush, or with water jet.
3.
Reinstall the filter by sliding it back into the groove.
C . 4 .
F a n M o t o r R e p l a c e m e n t
1.
Remove the screws from the bottom panel.
2.
Remove the fixing nuts of the fan blower.
3.
Replace the fan
4.
Reinstall the bottom panel with screws.
Cooke Industries - Phone: +64 9 579 2185 Email: [email protected] Web: www.cookeindustries.co.nz
