81317-4r1 MXR20PN24 & MXR30PN24 Installation & User Guide
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Installation of the HV Unit
3.1 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 remove any of the packing
material used in a damaged shipment.
After unpacking, inspect the units for visible damage.
Note: Failure to comply with the above could compromise the safe operation of the units and
invalidate the warranty.
3.2 Mechanical Installation
The MXR units must be fitted in the end product and secured in position using screws.
The units must not be used in an environment with a level of pollution worse than Pollution
Degree 2.
The units are intended for use as a component and no surface of the units should be accessible
in the end product.
3.3 Electrical Installation
The units should only be connected to a Category II environment, the units are not intended for
connection to the mains. The power for the units should be sourced from a UL recognised
double insulated or SELV 24 V dc supply. There is no external fuse.
The units shall be properly bonded to the main protective earthing termination in the end
product via the chassis.
The input and output connectors are not intended for field connections and should only be
connected to internal wiring in the end product. All external circuits connected to High Voltage
outputs shall be Double/Reinforced insulated from any accessible parts.
