Mitsubishi Electric PAA-A18AA1 Manual De Mantenimiento página 29

5.1. Maintenance access to clean coil slabs
In order to inspect the coil slabs, a hole can be cut in only the designated area of the delta plate, as shown
below. Ensure the hole is hermetically sealed after cleaning.
CAUTION
A circular area is etched on the delta plate to indicate where a hole can be made in the
delta plate without damaging the heat exchanger. This hole can be used for inspecting the
inside of the coil to determine if cleaning is required.
Before restarting the PAA unit, make sure this hole is covered and sealed with sealing
material that is able to withstand a minimum temperature of 350° F. Otherwise, air leakage
may occur.
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1 and all-
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Designated area to
cut hole for
inspection
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