Chromalox PG407-3 - Manual (Page 2)

CONVERSION (cont’d.)
B. CONVERTING STYLE 3 TO STYLE 3B RADIANT HEATER
1. Completely disassemble heater. Re-use the heating element O
(if desired), the extruded aluminum housing. the element sup-
port clips ••• and insulation bushing •• . Scrap all other parts.
2. Drill #24 (.152" dia.) hole in the wiring trough of the extruded
housing •• , 3" from each end.
NOTE: If replacing old element with a new one, omit steps 3 and 4.
3. Remove terminal connector from terminal pin and replace with
terminal connector 302-019961-002. The location of this con-
nector is as shown in Figure 6.
4. Fashion wire loops from #15 gage (.072" dia.) or larger high
temperature wire (such as stainless steel or nichrome) and braze
or tack weld these loops in position 2-1/4” from each sheath end
of the element.
5. Assemble heater as shown in Figure 7 using Parts Bag 168-
016585-002.
C. CONVERTING STYLE 3A TO STYLE 3B RADIANT HEATER
1. Completely disassemble heater. Scrap the bottom terminal
blocks •••, the terminal block support brackets •••, the
Tinnerman
® “U” speed nuts •••, the terminal block support
bracket screws ••• and the terminal block screws •••. Re-use all
the other parts, including the heating element unless a new one
is required. In this case order an element from Table A, page 3
with same voltage and wattage and for same heater housing
length as old unit.
2. Assemble heater as shown in Figure 7 using Parts Bag 168-
016585-001.
Aluminum
Housing
1
6
6
7
A
Figure 2 – Style 3 Terminal Area Assembly
Aluminum Housing
12
9
15
17
Figure 3 – Style 3A RAD Heater Terminal Area Assembly
1
7 6
A
9
17
16
15 12
RENEWAL PARTS IDENTIFICATION
13
3
11
12
4
12
9
10 5
14
Figure 4 – Parts Bag 168-016505-002 (to convert Style 0, 1 and 3B
12
11
12
9
10
Figure 5 – Parts Bag 168-016585-001
(to convert Style 3A to Style 3B)
PARTS BAG 168-016585-001 Consists of:
Terminal Block ...........303-016367-001 (2)
Speed Nuts.................272-048153·005 (4)
Terminal Block ...........303-014326-001 (2)
Screws - #8 x 1" Lg. ..248-075519-095 (6)
9
10
11
12
PARTS BAG 168-016585-001 Consists of:
Terminal Cover..............306-014405-001 (2)
Terminal Cover Clip.......056-014401-002 (4)
End Plate .......................220-017278-001 (2)
Terminal Block ..............303-016367-001 (2)
Speed Nuts....................272-048153-005 (4)
Terminal Block ..............303-014326-001 (2)
Screws - #8 x 1” ...........248-075519-095 (6)
Screws - #8 x 3/8” ........248-075519·080 (4)
Screws - #8-32 x 3/8”...248-075512-053 (4)
3
4
5
9
10
11
12
13
14