ircon Modline 4, Installation And Operation Manual

Page: 51 / 88

Section 5 — OPTIONAL ACCESSORIES
5–2
5.2 MODEL AA-3 AIR PURGE
ACCESSORY
(Used only with MODLINE 4 with standard
enclosure. For Series 43-04F or 43-02C
only. DO NOT combine with Model WA-3
Water Cooling Accessory.)
A Model AA-3 Air Purge Accessory provides a
stream of clean air to prevent smoke, particles,
steam, etc., from collecting on the lens. This
accessory bolts to the front flange of a MODLINE 4
and can be used in combination with other
accessories such as a Model WA-3 Water Cooling
Accessory.
A 1/2-inch NPT tapped hole is provided for air
intake. Air flow of about 5 ft
3 /min. is suitable for
most applications.
ASSEMBLY NOTES:
Two gaskets and three 5/16–18 NC flanged, hex head bolts are supplied. Insert bolts through unthreaded
holes on front flange of AA-3 and bolt to mounting support (or additional accessory, if used). Insert
gasket(s)* in recess at rear, and bolt MODLINE 4 flange (or WA-3 Water Cooling Accessory, if used) to rear
flange of AA-3. Use bolts supplied with MODLINE 4 (or WA-3).
* Use one or two gaskets, as needed, to form good seal and still allow flange surfaces to touch.
NOTE: Refer to Section 2 for MODLINE 4 grounding information. If necessary, use appropriate insulation
between flanges of MODLINE 4 and AA-3, and attach with insulating hardware.
5 in. DIA
(127 mm)
2.984 in.
(75.4 mm)
TAPPED
1/2 in. NPT
(13 mm)
3.875 in.
(98 mm)
4.125 in.
(105 mm)
FRONT FACE
0.375 in. DIA.
(10 mm)
3 HOLES
REAR FACE
5/16–18
(3 PLACES)
30
°
THIS SURFACE
MOUNTS AGAINST
SENSOR FLANGE
(OR TO WA-3
WATER COOLING
ACCESSORY,
IF USED)
1 in.
(25 mm)
4.375 in. (111 mm)
DIA. BOLT CIRCLE
PHYSICAL DIMENSIONS