DESCRIPTION OF TEST CONSOLE TEST BENCH 2A2 (cont)
BLOWER ASSEMBLY 2A2A15
(1) The blower assembly (McLean Sidewinder model 1EB980B) consists of a chassis
frame, a two-speed (rubber shock mounted) motor,
a reusable aluminum mesh air filter
The filter is positioned in front of the blower and held in place by a
grill secured to the chassis frame by two captive nuts.
A power cable protrudes from
the right side of the blower assembly and connects to a power receptacle on plug mold
number two (cable assembly 2A2W2A2). A ground lead, installed on the right side is
connected to the test console test bench cabinet.
A two-position slide switch (up
position - high speed, down position - low speed), mounted on the right side, is only
accessible when the blower assembly is partially removed from its installed position.
The switch must always be set to the high speed position to provide maximum air output.
(2) The purpose of the blower assembly is to stabilize cabinet temperature by
providing a continuous air flow around the electronic assemblies.
Blower Assembly Characteristics:
Electrical Input: 115v, 60 Hz
Air Flow: 550 cfm
20 lb (approximate)
q. ELECTRICAL-OPTICAL CALIBRATION KIT
The electrical-optical calibration kit is used during alignment of the analog to
The kit consists of an electronic test extender card, an RF cable
assembly, and a self-test connector.
Change 10 1-85