4.
4.1
Basic Component Layout
Chassis
The COBO 1.2Kw Pack chassis consists of a main structural chassis (bottom
housing and front panel), a removable top, and an interchangeable rear connec-
tor panel. The heavy gauge structural panels create a rugged container even
though assembled with only four pieces.
The main structural chassis consists of the bottom housing and front panel fas-
tened rigidly together . The front panel is recessed to protect the circuit breakers
and panel components.
The front panel, constructed of .090 thick aluminum alloy, contains cutouts for
the U.L. listed circuit breakers and a removable panel which hides the plug-in
printed circuit boards.
The bottom housing, constructed of .125 thick aluminum alloy, supports a heat
sink subassembly (mounting the solid state relays and an overheat thermostat),
a fan, a fan guard, a circuit breaker/torroidal choke subassembly (with chokes
solidly mounted in a
'clamshell" Lexan retaining channel), and a power-in
knock-out, for input power wiring wiring. The rear panel is attached to the bot-
tom housing and recessed to protect the connectors. Four large diameter feet,
approximately 3/4' high, are attached to the underside of the bottom housing
and existing feet mount holes are accessible for easy wall mounting.
The rear connector panel, constructed of .090 thick aluminum alloy, is manufac-
tured in four customer options:
1) Pin connectors
2) Twist lock GTL connectors
3) Straight blade (Duplex) connectors
4) A terminal block for hard wiring of outputs plus control
The top cover, constructed of .125 aluminum alloy, fastens to the main chassis
by four screws, and allows easy access for servicing. Recessed handles are in-
tegrated into the top housing for easy one man carry capability. Instruction
labels are affixed to the underside of the top cover and a warning label ... ,
'Disconnect power before removing
top~ ... attached to the top of the cover.
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