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Installation
The HP 3326A is also equipped with a thermal cutout switch which automaticaiiy puts
the HP 3326A in standby whenever the internai temperature is excessive. The temper
ature at which this occurs is dependent upon iine voitage and airfiow. With proper air-
fiow and operating line voitage, thermai cutout wii i not occur at iess than a 65° C am
bient temperature. The switch resets automatically when the HP 3326A coois. if a
thermai cutout occurs, disconnect the power cord and check for fan stoppage, ciogged
fan ports, clogged filter, or other conditions that can obstruct airflow or otherwise cause
excessive heating.
MOTE
The thermal cutout may operate at external tem
peratures below 65° C if the airflow is blocked or
line voltage is near the upper voltage limits.
INSTALLATION
The HP 3326A is shipped with plastic feet in place, ready for use as a portable bench
instrument. The plastic feet are shaped to make full width modular instruments self align
when they are stacked. The clearances provided by the plastic feet in bench stacking
and the fi ller strip in rack mounting allow air passage across the top and bottom cabi
net surfaces.
A front handle kit can be installed for ease of handling the HP 3326A on the bench.
The part number for the front handle kit is listed in Figure 6.
Option 908 (Rack Mount Flange Kit) and 909 (Rack Mount Flange Kit with Handles) enable
the HP 3326A to be mounted in an equipment cabinet. The rack mount for the HP 3326A
is EIA standard width of 482.6 mm (19 inches). To install the HP 3326A in an equipment
cabinet:
If installed, remove the plastic trim (Figure 8) and front handles from
the HP 3326A.
Remove the plastic feet from the bottom of the HP 3326A.
Install the rack flange kit with or without handles according to in
structions included with the kit. (Kit part numbers are listed in Figure
6.)
MOTE
The rack mount flange kit of Option 908 will not
provide the space requirement for rack mounting
when used with the front handle kit of Option 907.
If front handles are not available, use the combi
nation kit of Option 909 to rack mount with han
dles. If Option 907 front handles are available, use
Rack Mount Flange Kit, HP part number 5061-2072
to add rack mounting.
INSTALLATION - 6
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