Condensor Coil Cleaning; Return Air Filters - Regal 3760 Owner's Manual

CONDENSOR COIL CLEANING

Note: If desired, call an air conditioning expert to do the
periodic maintenance on the system
1. With the system turned off at the ship's AC electrical
panel, disconnect the inlet and outlet connections of the
condensor coil.
2. Use chemical resistant hoses (MAS white PVC 5/8"
I.D., etc.) to connect the inlet of the condensor coil to
the outlet of a chemical resistant, submersible pump (MAS
P-500 pump, etc.) and let the hose connected to the coil
outlet flow freely into the container mentioned below.
3. Place a strainer or piece of screen over the inlet of the
pump and submerse the pump into a container filled with
a 5% solution of muriatic or hydrochloric acid and fresh
water or use a premixed over-the-counter solution. Use
as large a container as possible to hold the solution
(2 to 5 gallons).
CAUTION
!
AVOID BODILY INJURY!
AVOID SPILLING OR SPLASHING
THE SOLUTION.
FOLLOW THE WARNINGS
AND RECOMMENDATIONS GIVEN
BY THE MANUFACTURER
OF ANY ACIDS
OR PREMIXED SOLUTIONS.
4. Power the pump and circulate the solution through the
condensor coil for 15-45 minutes depending on the size
of the coils and the extent of the contamination. Visual
inspection of the solution in the container should indicate
when the contamination removal has stopped.
5. Circulate fresh water through the coil to flush any
residual acid from the system.
6. Restart the system and check operational parameters
to ensure thorough cleaning has taken place. Additional
cleaning may be necessary with extreme contamination.
NOTICE
FOR THE PURPOSE OF PROTECTING
THE ENVIRONMENT,
DISPOSE OF ANY CONTAMINATED
ACID SOLUTIONS IN ACCORDANCE WITH
FEDERAL, STATE AND/OR LOCAL
REGULATIONS

RETURN AIR FILTERS

Check the return air filter located below the AC/DC salon
cabinet monthly and clean as necessary. To clean the filter,
remove it from the unit, rinse with water, air dry and
reinstall.
20
Chapter 8
Drain Tray
Drain Hose