Magic Aire HCA Series, Installation, Operation And Maintenance Manual

Page: 22 / 30

035-000049-001 Page 22 HCA IOM 1.1 8-28-2017
1. Perform procedure on the ground for safety. If
working at heights USE EXTREME CAUTION
observe all FALL SAFETY considerations.
Under all conditions, LOCK OUT all power
supplies before performing this procedure.
2. Isolate and drain coil from heating/cooling fluid
and/or reclaim refrigerant. Disconnect unit
from piping. Remove supply piping to allow
access into the coil section from the side. Re-
fer to Service Clearance drawing to determine
required clear space.
3. Remove the flat coil stubout panel. Refer to
Figure 16 and 17. Note that there is another
coil access panel on the opposite side of the
unit.
SERVICE-Coil & Drainpan Removal and Reinstallation Procedure
Coil Stubout
Panel
Figure 16
Figure 17
Coil Stubout Panel shown removed
Filter
Door
Figure 18
Filter removal
4. Remove filter door and filter (Figure 17
and 18).
5. Remove coil retaining screws (4ea sizes
04-20, up to 6ea sizes 30-40). Screws
attach the first coil to the coil panel.
Screws are visible from the coil side
(Figure 19) and are accessible from the
filter side of the unit (Figure 20).
Figure 19
Coil Retaining Screws
Figure 20
Coil Retaining Screws-filter side view (filter
removed)