ECR CM Installation, Operation & Maintenance Manual - page 19
Monthly inspection and maintenance
DANGER
Electrical shock hazard — disconnect power to the
RetroAire replacement Water Source Console Units before
servicing or accessing the control compartment. Failure to do
so could result in severe personal injury or death.
WARNING
It is illegal to discharge refrigerant into the atmosphere. Use
proper reclaiming methods and equipment when servicing a
RetroAire replacement Water Source Console Unit.
For optimum performance and reliability of your RetroAire replace-
ment Water Source Console Unit, ECR International recommends
performing the following inspections and maintenance on a monthly
basis. Units that are installed in harsh or dirty environments will
require more frequent inspections and maintenance.
Disconnect power to unit and remove necessary access panels.
Clean or replace the return air filter.
☐
WARNING
Clean or replace the return air filter as needed. Allowing dust
to collect on the filter will cause the unit to lose efficiency and
eventually malfunction. Check the filter at least once a month.
Some environments may require more frequent replacement,
depending on particulate in the air stream.
NOTICE
If a new air filter is needed for your RetroAire replacement
Water Source Console Unit, consult factory for availability
and/or proper sizing.
Vacuum return air grille surface.
☐
Inspect & clean the chassis interior for rodent or insect infestation.
☐
Clean & flush condensate drain pan.
☐
Ensure the condensate drain is functioning properly.
☐
Inspect refrigeration tubing, especially braze joints, for signs of
☐
refrigerant leaks
(oil residue). Repair if necessary.
Inspect coil. Ensure dirt or debris have not collected on the fins.
☐
Clean if necessary. Be careful not to damage coil fins when cleaning.
Use a fin comb to straighten any bent fins.
Examine control box. Ensure all wire connections are secure.
☐
Ensure blower wheels are secured to their motor shafts.
☐
Ensure dirt or debris have not collected on the blower wheels .
☐
Use a vacuum and soft brush to clean if necessary.
If the unit has a hydronic option installed, inspect piping, espe-
☐
cially braze joints, for signs of water leaks. Repair if necessary.
Clean the exterior of the cabinet as desired with a mild soap or
☐
household cleaner.
Maintenance & Troubleshooting
In the event the limit switch opens and de-energizes the electric heat,
☐
the limit switch will need to be manually reset.
To reset switch:
Remove the control box cover.
•
Locate the limit switch.
•
Push in the reset button on the face of the switch (see
•
Figure 13).
Figure 13 Manual Reset Limit Switch
Reset Button
*Note:
Button will pop
out when limit
switch opens. Push
in to reset.
Seasonal start-up and maintenance
At the beginning of the cooling and heating seasons, a complete me-
chanical check should be performed and maintenance/inspections
performed as described below.
Disconnect power to unit and remove necessary access panels.
Perform the inspections and maintenance defined in "Monthly
1.
start-up and maintenance."
Do a visual check of the equipment. Look for obvious changes in
2.
the unit such as damaged coils or evidence of extended wear on
any moving parts.
Check for unusual odors, oil leaks, or stains on or around the
3.
coil and refrigerant lines. The presence of oil here may indicate
a potentially serious problem such as a refrigerant leak
(example
— burned motor windings, water, or refrigerant).
Make sure the base pan is clean.
4.
Inspect all electrical connections.
5.
Look for frayed wires and poor
connections. Terminal ends that are loose will eventually fail, caus-
ing a loss of performance or possible damage to equipment.
Check fan motor and blower assemblies. Some units may require
6.
a drop of light oil to motors and/or bearing assemblies (
look for oil
cups). Ensure setscrews and motor mounting hardware are tight.
Brush and/or vacuum the centrifugal fan blades and blower cage
7.
assemblies, as they must be clean to operate efficiently.
If the unit has a hydronic option installed, inspect piping, espe-
8.
cially braze joints, for signs of water leaks. Repair if necessary.
Clean or replace the return air filter.
9.
Vacuum return air grille surface.
10.
Inspect & clean the chassis interior for rodent or insect infestation.
11.
Inspect coils. Use a fin comb to straighten out any damaged fins.
12.
These
coils must be clean for proper operation.
Water Source Console Units
• Installation, Operation, and Maintenance Manual •
P/N 240008071, Rev. B [112309]
19
Made in USA