Unit installation

Use and Maintenance Manual Air-cooled water chillers and Heat Pumps R-PAE/R-PAH/EAH Rev. 1 del 03/09
Picture 47 Picture 48
1. Remove the fusebox cover.
2. Take the extractor tool “2” located inside the electrical panel.
3. Insert the puller into the fuse spring clips (see the white circle on Picture 47) and pull the extractor down till the clips
are released.
4. Pull the extractor horizontally and firmly towards you; (any different movement could detach the cover from the fuse
holder).
5. Press the button on the puller to remove the fuse (see Picture 50).
6. Insert the new fuse onto the puller and put it back into the fuse holder.
7. Release the puller by pressing the button.
Picture 49 Picture 50
DO NOT TOUCH THE FUSE WITH NAKED HANDS: THE TEMPERATURE OF THE SURFACE
COULD BE VERY ELEVATED AND COULD CAUSE BURNS.
5.7.16 Replacement of condensing fan motors
While making the check, the unit main switch must be open (“0” position) and locked. The padlock key
must be kept by the person in charge of the check.
There are two types of fans: axial and centrifugal. In case of axial fans, being external-rotor type, it is recommended to
replace completely the damaged fan after disconnecting the power supply (take due note of the original wiring). Mount the
fan on its supports and ensure the blades do not scrape the blade guard and the supports, re-connect the electric wirings,
check the rotation direction (if needed, reverse two phases). In case of centrifugal fans, after disconnecting the motor from
the power supply, unscrew the fixing screws and remove it in the same way as described for the belts replacement (see
par. 5.7.11); remove the pulley from the shaft by means of an extractor, after unscrewing the fixing dies.
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