Installation
Take care of an even ground, suitable fastening of feet or flange and an exact alignment for direct coupling.
Avoid that structure–dependent natural frequencies occur within the rotary frequency and the double mains fre-
quency. Turn rotor
by hand
, listen to abnormal frictioning noises.
Check direction of rotation
before coupling
(Observe section ”Electrical connection”).
Pulleys and couplings are
only
allowed to be installed or removed with suitable devices (Heating!) and to be
covered with
protection against accidental contact
. Avoid inadmissible belt tensions (Tech. List). The
bal-
ance
of the low voltage motor is indicated on the shaft end face or on the rating plate (H = half key, F = full
key). In case of a half key (H), the coupling must also be balanced with a half key. In case of any
protruding
and visible part of the key take care of the mass balancing.
If required, make the necessary pipe connections. Mounting types with the shaft end facing upwards are to be
provided with a cover by
the customer
, avoiding that foreign bodies fall into the fan.
Electrical connection
All work is only allowed to be done by
qualified
personnel with the low voltage motor and driven machine at
standstill, electrically dead
and
locked against restart
.
This is also applicable to auxiliary circuits (e.g. space heater).
Check de–energizing!
A non–observance of the tolerances indicated in EN 60034–1/VDE 0530, part 1 – voltage
"
5%, frequency
"
2%, curvature, symmetry – will result in an excessive heating and is influencing the electromagnetic compatibil-
ity. Observe data on the rating plate as well as wiring diagram in the terminal box.
Observe connection and differing data on the rating plate as well as the wiring data in the terminal box.
Connection is to be made in such a way that a
durably safe
, electrical connection is maintained (no uncovered
wire ends); especially provided cable end equipment is to be used. A safe
earthing
is to be made.
The minimum air gaps between uninsulated and live parts themselves and to earth must not be lower than the
following values: 8 mm at U
N
v
550 V, 10 mm at U
N
v
750 V, 14 mm at U
N
v
1000 V.
The terminal box must be
free of
foreign bodies, dirt as well as humidity. Unused cable entries and the box it-
self are to be sealed against
dust
and
water
. For trial operation without driving elements the
key
is to be
se-
cured.
For low voltage motors with brake it is to be
checked
before putting into operation,
if the
brake
is per-
fectly functioning.
Ventilation must
not be hindered
and the
outgoing air – also from adjacent units – must
not be directly sucked in again.
Safety and commissioning instructions
26
C - SERIE BESTRIEBE- UND wARTUNGSANLEITUNG
CHM - SERIES Maintenance and Sparepartlist
Operation
Vibration severities v
eff
≤
3.5 mm/s (P
N
≤
15 kW) and 4.5 mm/s (P
N
> 15 kW) are not critical in coupled oper-
ation. In case of changes compared with normal operation – e.g.
higher temperatures, noises, vibrations
–
the cause is to be found, if required, consult the manufacturer. Even for trial operation the safety devices are
not allowed to be put out of function. In
case of doubt
switch off the low voltage motor.
In case of heavy dirt accumulation, the air ducts must be cleaned at regular intervals.
Bearings with regreasing devices are to be regreased with low voltage motor
running
. Risk of accidents! Pay
attention to rotating parts. Observe saponification class! If grease drainholes are sealed with a plug,
remove
these plugs
before putting into operation. Boreholes have to be sealed with grease. Replacement of bearings
in case of permanent lubrication see Appendix 1 or motor documentation.
Warranty
The
Warranty
is only applicable if all of these instructions for safety and putting into operation as well as the
following paragraphs of the operating instructions and the directions for possible additional units are strictly ob-
served.