True TRM4M-BLK-WHT1-BLKLLLL-NY-4 Owner's Manual page 29

Maintenance & Servicing (cont.)
Condenser Coil Cleaning (cont.)
Procedure
1. Unplug the unit or turn off the power supply.
2. Remove the front shroud(s). See fig. 1.
NOTICE › On FOUR SECTION UNITS, the front shrouds are
connected. See fig. 2.
3. With a stiff bristle brush, carefully clean accumulated dirt from
the front condenser coil fins See fig. 3.
4. With dirt removed from the surface of the coil, use a flashlight
to verify that you can see through the coil and observe the
condenser fan blade spinning. See fig. 4.
5. If the view is clear, vacuum any dirt around the condensing
unit area, reinstall the front shroud(s), and then restore power
and verify operation.
6. If the view is still blocked with dirt, proceed to the next step.
7. Gently blow compressed air or CO₂ through the coil until it is
clean.
8. Carefully vacuum any dirt around the condensing unit area.
9. Reinstall the front shroud(s), restore power to the unit, and
verify operation.
Additional Information
If you have any questions, please contact your local TRUE
Manufacturing Service Department. See the front cover for
locations and contact information.
• DO NOT place any filter material in front of the condensing
coil.
TEC_TM_180 | REV. D | EN
RETAIL MERCHANDISER
Fig. 1. Front shroud screw locations.
Fig. 2.
Connected front shrouds.
Fig. 3. Never brush arcoss coil fins.
Fig. 4. Verify all blockages have been removed.
12/11/2023
www.truemfg.com
Page 29 of 44