AERCO Steam Generator - Manual (Page 18)

INSTRUCTIONS – AERCO HELITHERM STEAM GENERATOR MODEL SS1B-PLUS
SG-101-16
REASSEMBLY
Reference illustrations:
Same as DISASSEMBLY, plus:
SG-101-5 Alignment of Steam Riser and
Condensate Return
SG-101-6 Assembly of Coil to Steam
Riser or Condensate Return
SG-101-7 Coil Spacing Tool
Special Tools Required; Same as for
DISASSEMBLY, plus a coil spacing tool as
shown in Figure SG-101-7.
NOTE
All part item numbers shown in parentheses
( ) in the following instructions refer to those
shown in Figures SG-101-8, SG-101-9, or
SG-101-10.
R1. If either the steam riser (7) or
Condensate Return (8) must be
replaced:
a. Use pipe joint compound or Teflon
tape on the threads and screw the
replacement Steam Riser and/or
Condensate Return into the
Generator lower head.
b. Tighten the Riser or Return taking
care to line up the spud centers with
the raised indicators on the bosses
in the head casting as shown in
Figure SG-101-5.
R2. If a coil must be replaced:
a. See Figure SG-101-6. A conical Coil
Gasket (10) is required for each Coil
union in the Generator. It is recom-
mended that Coil Gaskets (10) be
replaced whenever a coil is
reassembled to a Riser or Return,
even though the Coil itself is not
being replaced. Snap the gasket
into the Riser or Return spud.
Figure SG-101-5. Alignment of Steam Riser
and Condensate Return
Figure SG-101-6. Assembly of Coil to Steam
Riser or Condensate Return
b. Before attempting to assemble the
Coils to the Riser or Return spuds,
wrap each spud with Teflon tape
and apply a lubricant (grease) to the
back of the union nuts and
shoulders on the Coil tail pieces
(see Figure SG-101-6). Rotate the
nuts to spread the lubricant.
c. Assemble the Coil union to the
Condensate Return (8) first. Do not
tighten. Assemble the other Coil
union to the Steam Riser (7).