fluid couplings - Laumayer

RECOMMENDED OIL AND QUANTITY
SAFETY DEVICES
9. OIL FILL
Transfluid fluid couplings are not generally filled with oil, so
it is necessary to follow the procedure reported here below to
achieve the standard fill X for K series, fill 2 for CK series and fill
3 for CCK series:
1 - position the fluid coupling axis horizontally, turn it until the X
mark (respectively 2 or 3 according to the fluid coupling type)
cast into the housing gets at the top vertical (maximum oil fill),
so that the oil plug is inclined as shown in Fig. 5.
2 - fill with oil until it overflows out of the filler hole. While filling,
gently rock the coupling on its axis to make sure all air excess
is vented out of the circuit. The quantities to be introduced are
those reported in Tab. E.
3 - screw the cap and make sure no leakages occur; otherwise
use thread sealant on filler plug threads.
4 - the fillings marked X-1-2-3-4 may be chosen by the operators
to meet the best performance in terms of start-up and steady
running condition.
5 - for normal operating conditions, use only ISO HM 32 (or
equivalent SAE 10W).
At low ambient temperatures (near 0°C), it is recommended to
use ISO FD 10 (or equivalent SAE 5W) oil.
For temperatures below –10°C, ask Transfluid.
6 - for vertical mounted applications, the couplings recommended
oil fills are reported in Tab. E.
Size
6
7
8
9
11
12
13
15
17
19
21
24
27
29
34
D34
SERIES K
RECOMMENDED OIL: ISO 32 HM
Agip OSO 32
Aral VITAM GF 32
Bp ENERGOL HLP 32
Castrol HYSPIN AWS 32
Chevron RPM EP HYDRAULIC 32
Esso NUTO H32
Mobil DTE 24
Shell TELLUS 32
Texaco RANDO HD 32
Total AZOLLA ZS 32
Fillings
OIL QUANTITY lt
FILL X FILL 2 FILL 3
0,50
—
—
0,92
—
—
1,50
—
—
1,95
—
—
2,75
3,35
—
4,1
4,8
—
5,2
5,6
—
7,65
8,6
9,3
11,7
13,6
16,4
14,2
16,5
18,8
19
23
27,3
28,4
31,2
35,5
42
50
59,5
55
63
70,6
82,5
92,5
96,7
162
—
—
SERIES CK
SERIES CCK
24
10. SAFETY DEVICES
FUSIBLE PLUG
In case of overloads, or when slip reaches very high values, oil
temperature excessively increases, damaging oil seals and
letting oil out.
To avoid damage, for severe applications it is advisable to fit a
convenient fusible plug. Fluid couplings are supplied with a
fusible plug at 145°C (120°C, 175°C or 198°C upon request).
SWITCHING PIN
Oil leakage out of the fusible plug may be avoided with the
installation of a switching pin device. When the temperature
reaches the melting point of the fusible ring element, this
releases a pin that intercepts a relay cam, giving an alarm or
stopping the main motor supply.
As for the fusible plug, 3 different fusible rings are available (see
page 25).
ELECTRONIC OVERLOAD CONTROLLER
It consists of a proximity sensor measuring the speed variation
between input and output of the fluid coupling, giving an alarm
signal or stopping the motor in case the set threshold is
overcome.
With such a device, as well as with the infrared temperature
controller, no further maintenance or repair intervention is
necessary after the overload situation, because the machinery
can regularly go on, once the cause of the inconvenience has
been removed (see page 26).
INFRARED TEMPERATURE CONTROLLER
To measure the operating temperature, a device fitted with an
infrared sensor is available. After conveniently positioning it by
the fluid coupling, it allows a very precise non-contact
temperature measurement.
Temperature values are reported on a display that also allows the
setting of 2 alarm thresholds to be used by the customer (see
page 27).
Tab. E
Fig. 5
4 3 22
1 X
X X 11
22
33
4
13