User guide

Revision 7.1b Page 29 of 31

Mercury Coldroom Panel Installation Guide

www.resourcedm.com

Warning

Please Note

The specifications of the product detailed on this

Set-Up Guide may change without notice. RDM

Ltd. shall not be liable for errors or for incidental

or consequential damages, directly and indirectly,

in connection with the furnishing, performance or

misuse of this product or document.

Ensure that all power is

switched off before

installing or maintaining

this product

Appendix 1

For later hardware revisions of Coldroom panels the Compressor/LLV and Defrost MCB/Fuse can be interchanged to allow the higher

rated MCB/Fuse, 20A, to be used on the Compressor/LLV relay output and the lower rated MCB/Fuse, 10A, to be used on the Defrost

relay output. By default the Coldroom panel ships with the 20A MCB/Fuse fitted to the Defrost relay and the 10A MCB/Fuse fitted to the

Compressor/LLV.

Changing the configuration of this part must be carried out by competent personnel. RDM will not be held responsible for any damage incurred to the

equipment through mishandling or faulty installation when carrying out this work. If unsure do not carry out this procedure and contact RDM Technical

Support for further assistance.

Instructions – MCB Variants

1) Before working on this equipment, ensure that the device is fully isolated from any supply voltage, including connections to all relays and other

I/O connectors.

2) Open the Coldroom front panel by unscrewing the screw fixings at the top right and bottom right of the panel door. If an Isolator

switch is fitted to the Coldroom panel then this must be in the off position before the door will open.

3) Locate the MCB’s. Note a fixing plate is attached over the MCB’s.

4) On the fixing plate a label is affixed indentifying each output and the current rating in Amps for the associated MCB for the

default configuration. Note the ratings of the MCB’s are marked on the side of the MCB and they should be checked to ensure

the current MCB rating and position matches that indicated by the label.

5) To swap the higher rated Defrost MCB over with the Compressor/LLV MCB firstly unscrew the plastic washer for all four

MCB’s.

6) Now remove the two screws at the top and bottom of the fixing plate.

Plastic Mounting Nut

Screw Fixing

Points For

Fixing Plate