Emergency System - Rivacold BLOCKSYSTEM FS series Betriebs- Und Wartungsanleitung

9.

EMERGENCY SYSTEM

PLEASE NOTE: The operations described here below must only be performed by a specialist
technical engineer.
If the electronic control unit breaks down or presents operating anomalies and it is impossible to
replace it immediately, there is an EMERGENCY SYSTEM that can be used to maintain the unit in
operation until it can be replaced.
To use this system, proceed as follows:
1. Cut off power to the Blocksystem
2. Remove all jumpers between the L terminals and the common contacts of the card relays
(terminals 25-28-33-36-38)
3. As shown in the diagram, connect a thermostat between the L terminal, the NO terminals
(terminals 32,37) and the NC terminal (terminal 34) of the compressor, defrosting and fan
relays (COMP, DEF and FAN)
4. Fit a jumper between the L terminal and the NO terminal of the ON/OFF relay (terminal 26
supplying power to the crankcase heaters, door and waste, where fitted).
5. Connect the Blocksystem back to the mains power, setting the thermostat to the required
temperature.
6. PLEASE NOTE: This connection can only be used momentarily. Contact your dealer as soon as
possible to replace the malfunctioning card.
7. PLEASE NOTE: Defrosting will be cut out for the entire emergency phase and for this reason,
we recommend that cold room door opening be kept to a minimum.
8. When fitting the new control unit, restore all of the connections described in points 2,3,4 and 5.
BLOCKSYSTEM FS Pag. 31 Rev. 02 02/07
UK