6
Newmar • PO Box 1306, Newport Beach, CA 92663
• Phone: 714-751-0488 • E-mail: [email protected]
2 Installation
2.1 General
Warnings
This rectifier contains no user serviceable components. Do not disassemble the rectifier.
To isolate the rectifier from the mains power, simply unplug from the rack or switch off at the distribution
panel.
2.2 Rectifier
Shelf
The C2R-2000 rectifier is designed to be used with the Newmar C2RS rectifier shelf or approved
alternative. This shelf will accommodate up to 4 C2R-2000 modules giving a total output capacity of
4.0kW.
Note: C2R-2000 rectifier (48/24 VDC) should not be connected together with ordinary C2R-1000 rectifier
as they have different output voltages and damage may result.
2.3
AC Supply Surge Protection
The AC supply that feeds the rectifiers should have surge protection installed to meet levels defined for
terminal equipment. Newmar recommend that IEC 62305-4(Protection against lightning - Part 4: Electrical
and electronic systems within structures) be used to give guidance on the design of surge suppression
systems.
2.4 Ventilation
The performance of the rectifier can be limited if the ventilation is restricted. The rectifier is cooled by
drawing air into the front of the unit with a single fan. This air passes through the rectifier cooling the
electronics and exiting the rectifier at the rear. To ensure this happens as efficiently as possible ensure the
following:
•
The air at the front of the rack is at ambient temperature and not being heated by other equipment.
•
Ensure the rectifier shelf has at least 75mm (3”) clear horizontal space behind it. This space must
be clear of cables and any other components that may restrict air movement.
(Note: if multiple rectifier shelves are installed then there should be at least 75mm (3”) clear
horizontal space
per shelf
.)
•
The free space in the rack should continue vertically to the exhaust point at the top of the rack,
without impediment.
•
The hot exhaust air should not be allowed to re-circulate to the front of the rack as this will be
drawn into the rectifiers again, in effect raising the apparent ambient temperature.
The rectifier should be operated in a low dust environment. If this cannot be guaranteed, then the rack
should be fitted with air filters to prevent dust passing into the rectifier units. These filters need to be
designed for adequate air volume and regularly maintained.
Note:
If you are designing your own rectifier shelf, then particular care must be taken to ensure that any
metalwork, cable or printed circuit boards are placed to maximise the flow of cooling air. To assist in this a
drawing of the rear area of the rectifier, show air flow areas, has been included in appendix 5.
DANGER
Do not operate the rectifier if the covers are damaged or removed in any way
-
The rectifier contains voltages that may be lethal even after the
input supply has been removed
-
The rectifier contains components at High Temperatures that may
burn if touched
