Stulz Tel-Air-2 Series, Operating Instructions Manual

Page: 5 / 72

E/0618/35A/5
Important
Read these operating instructions carefully and observe them before installing and using
this A/C unit.
Keep this manual throughout the lifetime of the product.
This manual reflects the state of the art existing at the time the product is marketed and
shall not be deemed to be inadequate for the sole reason that it has not been updated
following new developments in design and construction methods.
STULZ reserves the right to update the product and relevant manual without being
required to update previous products and manuals other than in exceptional
circumstances. To require or receive any updates of the instructions manual or
amendments thereto, which shall be deemed to be an integral part of the manual, please
contact your local STULZ partner.
Observe the instructions contained in the section entitled
Safety instructions.
For three-phase scroll compressors: take care of correct phase sequence after the
connection of the main power supply.
The sequence is important for the correct sense of rotation of the 3-phase Scroll compressor.
A loud noise coming from the compressor means it is turning in the wrong direction. If this
continues for a few hours, it will overheat and irreparably damage the compressor. Correct
compressor operation can be easily checked by measuring the temperature at the condenser
outlet. If this temperature is noticeably higher than the external temperature, the compressors is
working correctly. Otherwise, the compressor is turning in the wrong direction and the phase
sequence must be changed.