HEX050QA Heat Exchanger Instruction Manual
Page 6
6. Maintenance and Replacement
Be sure to SHUT DOWN the power before proceeding with any
maintenance or component replacement .
6-1. Maintenance
Monthly
Use brush and low pressure air to blow out the dust or any debris
on both internal/external air inlet and air outlet opening .
Quarterly
Follow below maintenance sequence
Internal loop maintenance :
* The maintenance is from internal side .
* Use screw driver to remove secured screw to disassemble
the internal fan plate assy (Item 4) from bottom of chassis assy
(item 1) , and disconnect internal fan from controller
(Item ) , Note the connection location .
* Use brush and low pressure air to remove dust on internal fan
plate assy (Item 4) , internal fan & heat exchange core air
intake opening at internal side .
* Connect fan to controller (Item 3) and re-attach internal plate
assy (Item 4) with chassis assy (Item 1) .
External loop maintenance :
* Due to the maintenance have to damage the waterproof
foam on the bottom of HEX , Delta propose to return to
factory for maintenance or request Delta authorized support
for assistance if customer find external airflow loop has
obstruction to drop cooling capacity .
Test
Power on and depreess “TEST” button on panel to proceed with
auto test . Follow LED status to check that HEX has resumed to normal
function after maintenance .
