TCF Termoventilatori Condizionatori Felsinea Srl
40057 Cadriano di Granarolo Emilia (Bologna), via Giuseppe di Vittorio 5
www.tcf.it
13
-
feed fluids at temperatures lower than the design
temperature
-
malfunction or breakdown of control valve
actuators
-
water flowrate below design values
5.5.4
Abnormal noise level
With regard to the fan, the causes may be:
-
worn-out or defective bearings
-
fan off-balance
-
foreign matter in the fan wheel
With regard to the electric motor, the causes may be:
-
worn-out or defective bearings
-
loose cooling fan and/or fan guard
-
magnetic noise during frequency reductions with
inverter (applications below 22Hz are not
recommended as a rule)
With regard to the drive system, the causes may be:
-
slipping of belt
-
worn belt
-
misaligned pulleys
-
pulley with play on key
in order to remedy the malfunctions listed above (and not the
entire air-conditioning system), CONSULT THE CHAPTER
RELATED TO THE MAINTENANCE (ch. 5) OR, IF THE
PROBLEM
PERSISTS,
CONTACT
OUR
TECHNICAL
DEPARTMENT.
6.
SAFETY
6.1
SAFETY-RELATED
FEATURES
OF
AIR-
CONDITIONING UNITS
TCF Srl has fitted its air-conditioning units with every
possible safety feature to prevent accidents, especially during
start-up and maintenance.
Some of the SAFETY FEATURES are listed below:
-
INSPECTION DOORS THAT CAN ONLY BE OPENED
WITH A KEY are installed in the sections housing
rotating parts and drives
-
the GRATES and HOUSINGS protecting rotating
parts and drives can only be removed with a key
-
the outside of the structure has ROUNDED EDGES
-
elimination of sharp-edged steel sheet parts inside
and outside of the unit
-
use of SELF-TAPPING SCREWS WITH NON-
PROTUDING TIPS inside sections and panels
we always recommend to install, inside the fan section, an
ELECTRIC ISOLATOR, which has the function of preventing
the fan-motor assembly from getting started during
maintenance operations, thus jeopardising the safety of the
technician.
6.2
SAFETY NOTICES APPLIED TO THE UNITS
The inspection doors of the air-conditioning unit carry
SAFETY NOTICES drawing the operator’s attention to the
danger connected with moving parts and warning him to
disconnect the system power before opening the inspection
doors (fig. 30).
FIG. 30
6.3
PRACTICAL ACCIDENT-PREVENTION TIPS
-
Open the inspection doors only when the fan is at a
standstill
-
Before carrying out maintenance work on the fan
motor unit, make sure that the motor cannot be
restarted by accident
-
Before operating on the motor, make sure that it has
cooled down completely
-
In order to protect your hands, use a lever to
remove the belts
-
Block the fan wheel before maintaining it, since
(especially when the belt is removed) the ‘updraft
effect’ caused by the ducts could make it rotate and
cause injury
7.
WARRANTY
TCF Srl guarantees its products for 12 months from shipment
date.
The warranty covers the normal operation of the individual
components installed on our units, such as motors, fans, heat
exchangers, humidifiers and other parts.
It should be stressed that the warranty covers manufacturing
defects in these parts, while their efficiency is categorically
excluded since this is determined by the characteristics of the
aeraulic and hydraulic systems and by the design, and does
not therefore fall within our sphere of responsibility.
TCF therefore undertakes to replace any individual
component which malfunctions as rapidly as possible and
subject to stocks. The part should be sent (freight costs pre-
paid) to our headquarters and the replacement part will be
sent ex-works.
Please note, too, that the warranty does not include the
service of our personnel for the replacement of the part on
site; this cost is entirely on the installer’s account.
On receipt of the returned material deemed to be defective,
an inspection will be carried out to establish whether the part
reveals abnormalities justifying application of the warranty.
If it is established that the defect is due to external factors,
the replacement part will be charged to the customer.
It should furthermore be noted that the warranty shall not
apply in the case of tampering or in case the failure is a
consequence of incorrect installation or connection.
On this behalf, reference will be made to the instructions
contained in this Installation, Operation and Maintenance
Manual which accompanies each of our machines.
TCF Srl
