Unit installation

Use and Maintenance Manual Air-cooled water chillers and Heat Pumps R-PAE/R-PAH/EAH Rev. 1 del 03/09
Picture 45 Picture 46
The pictures show two different types of remote control switches: the one shown on Picture 45 is equipped with a
detached protection, while the one shown on Picture 46 is equipped with an incorporated protection (automatic circuit
breaker). In both cases the regulation of the power-off switch value (maximum absorbed current per each motor
phase) is performed by rotating the small wheel shown inside the white circle by means of a screwdriver till the
referring triangle is in correspondence of the desired set value.
The maximum power-off value that can be set must not be higher than the absorbed current
value shown on the electric motor tag.
When powered, the remote control switch can be opened by pressing the button indicated by the white arrow.
5.7.15 Replacement of protection fuses
Some parts of the unit circuits are protected by fuses enclosed in appropriate housings.
THE THE REPLACEMENT OF FUSES MUST BE EXCLUSIVELY PERFORMED WITH THE MAIN
SWITCH OPEN .
Cartridge fuses
To replace the fuses, open the fuse holder, pull straight out on the small black handle down, remove the fuse/s
and replace it/them with a new fuse having the same characteristics. Before replacing it, check the interrupting
current rating of the broken fuse.
THE REPLACEMENT SHOULD ALWAYS HAVE THE SAME RATING AS THE ORIGINAL, SINCE
A HIGHER RATING COULD CAUSE OVERHEATING, DAMAGE, FIRE.
Blade fuses
This kind of fuse is designed for higher interrupting ratings and it must be absolutely replaced by using an appropriate
device. Never try to replace it by using inappropriate devices: possible damage to the fuse holder and wounds to the
hands may happen. Proceed as per the following instructions:
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