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North Atlantic Industries, Inc.
631.567.1100 / 631.567.1823 (fax)
6/12/2018
5330A Operations Manual Rev A6
110 Wilbur Place, Bohemia, NY 11716
Cage Code: 0VGU1
Page 20 of 24
Repair
DO NOT ATTEMPT REPAIRS.
All repairs to this instrument must be accomplished at the Factory.
High Voltage
is used in the operation of this equipment.
DEATH ON CONTACT
may result if personnel fail to observe safety precautions. Be careful not to
contact high-voltage connections when installing, operating or maintaining this instrument.
Input Power Always On
AC input power is continuously supplied to the power supply independent of the front panel ON/OFF Switch. The
primary means of disconnect is to remove the line cord from the instrument
Rear Panel Cooling Fan Filter
The unit is equipped with a cooling fan installed on the rear panel of the unit. The Fan Filter Assembly is user
accessible and the Fan Filter has been mounted for easy removal for cleaning and/or replacement. Periodic
inspection (duration varies upon unit environmental use) of the condition of the filter is recommended to insure
proper air flow circulation and reduction of contaminants. If filter is clogged or deteriorated, cleaning and/or
replacement is recommended. The Fan Filter is held in place by a filter shroud insert. Before any maintenance is
performed, insure that the power cord has been disconnected from the unit. The filter shroud can be removed (no
special tools required) by gentling pulling and disconnecting from the shroud assembly (insert is held in place by
molded retainers in the shroud). The filter can be accessed at this point for maintenance. Two spare replacement
filters are supplied in the accessory kit.
Figure 26
– Maintenance; Cooling Fan Filter
C
ALIBRATION
Self-calibration
The unit is self-calibrating. When unit is turned on it will automatically initiate self-calibration. After warm-up of 15
minutes, unit will again automatically calibrate the channel or channels being used. Once calibrated, unit will
monitor usage. Should frequency or voltage of output signal change/commanded by more than 12.5%, unit will
automatically recalibrate the channel in use. Calibration takes about 2 seconds.
Calibration Verification
The model 5330A should have its calibration verified on an annual basis. Factory Calibration service is available on
request. If the instrument fails to meet its accuracy, it must be repaired. Repairs can only be done at the Factory.