ST/STR/STA MANUAL
5
118107-001 REV J
Chapter 2
Inspection and Installation
nitial inspection and preliminary checkout procedures
are recommended. For safe operation, please follow
the step-by-step procedures described in Chapter 3,
Operating Instructions.
2.1 Initial Inspection
Inspect the package exterior for evidence of damage due
to handling in transit. Notify the carrier and Spellman
immediately if damage is evident. Do not destroy or
discard any of the packing material used in a damaged
shipment.
After unpacking, inspect the panel and chassis for visible
damage.
Standard Spellman ST high voltage power supplies are
covered by a warranty. Custom and special order models
(with an X suffix in the model number) are also covered
by a warranty. Check the specific warranty terms by
referring to the Warranty document contained in this
operator’s manual.
2.2 Input Requirements
Units ordered with the 400VAC Option (360-528Vac)
do NOT have a rear panel circuit breaker. For proper
protection of the ST power supply a circuit breaker
protected, dedicated three phase electrical service must
be provided for each ST chassis. ST units are not phase
dependent; the three AC input phase connections can be
orientated in any manner with no adverse effect on
power supply performance. SEE TABLE 1
2.3 Mechanical Installation
Units in the ST series have front panel holes for standard
EIA rack mounting. The rack must allow rear access for
cable connections. Units are fully enclosed and are
suitable for bench or tabletop operation. It is
strongly recommended to support the chassis by
guides or shelves.
2.4 Airflow Requirements
ST units are forced air cooled, air enters the
chassis via openings on the right and left side
panels and air is forcibly exhausted out the rear
panel via three fans. Whatever mechanical
installation is implemented airflow into and out
of the unit must not be compromised.
Additionally it is the responsibility of the user to
assure that air entering the unit is not above the
maximum
ambient
temperature
of
40°C.
Airflow volume is 300cfm for ST units, 200 cfm
for STR units and 100 cfm for STA units.
I
Figure 2.1 ST/STR/STA
Airflow
