59
UTD.123.2019-10.00_EN
Tab. 10.3.1 - Coil
Size
gear reducer
d
A
1)
B
1)
h
1)
O
1)
spanner
Ø
≈
≈
≈
≈
125 ... 180
12
40
40
–
–
22
200 ... 280
12
50
40
–
–
22
320 ... 360
16
60
45
–
–
30
400, 401
16
140
45
255
4000 ... 4501
16
180
–
250
472
30
5000 ... 5601
16
225
–
310
577
30
6300, 6301
16
280
–
320
647
30
1) Values valid and referred to mounting position B3; consult us.
Attention!
Do not tamper with the eventual stop plate in order to keep the pipes locked; in particular keep
the pipe locked while tightening the nut of connection pipe.
Unless specific indications given on the documentation attached to present instructions, water fed into the
system must:
– be not too hard
12 °F (French degrees);
– be at max tempe20 °C;
– capacity 10
÷
20 dm
3
/min;
– pressure 0,2
÷
0,4 MPa (2
÷
4 bar); the load loss of coil according to water capacity and pressure is 0,6
÷
0,8 bar for diameter d = 16 and 0,8
÷
1 for diameter d = 12.
Where ambient temperature may be less than 0 °C, make provision for water drain and compressed air
inlet, so as to be able to empty out the coil completely and avoid freezing up (see ch. 13.3).
The direction of flow of the cooling water is discretionary.
The user must install a flow indicator or other device on the water delivery to ensure the gear
reducer/gearmotor stops when the flow drops below the required rate; if the delivery water pressure
is too high or there is a risk of this occurring, install a safety valve properly set.
The instruments must be according to ATEX depending on the area of application and installed as close as
possible to the gear reducer/ gearmotor.
The ends of the cooling coil protruding from the gear reducer must not be damaged (bent, dented,
obstructed) as this can prejudice the correct flow of water for cooling or result in leaks. Before connecting
the coil to the pipe fittings used for feeding and draining of the cooling water, first rinse to clear out any
possible obstructions.
For the connection it is sufficient to use a smooth metallic tube having a d external diameter as per table.
The thermostatic valve permits to have water circulation automatically and without auxiliary supply need,
when gear reducer oil reaches the set temperature. The valve sensor is equipped with immerson bulb.
Mounting and setting, adjustable 50
÷
+90 °C, must be mounted during the assembly. For the
setting use the control knob on valve head.
For ambient temperature lower than 0 °C consult us.
Setting values advised for operating temperature: +50
÷
+65 °C.
Attention!
Be sure that all operations foreseen for the installation have been executed, by using tables 14.1
and 14.2. It is necessary to protect the thermostatic valve from any shock or stroke.
Thermostatic valve (G series)
Thermostatic valve (H series)
10.4 - Integrated water cooling unit (EP series)
1EL
2EL
3EL
4EL
2EB
3EB
4EB
d
Code
Ø
001A … 002A
001A … 006A
001A … 022A
001A … 060A
001A … 006A
001A … 022A
001A … 060A
G1/4”
RS1a
003A … 006A 009A … 022A 030A … 060A
085A … 180A
009A … 015A , 022
030A … 043A
085A … 125A
G1/4”
RS1b
009A … 015A
030A … 043A
085A … 125A
250A … 355A
018A ... 021A , 030A
060A … 085A
180A … 250A
G1/4”
RS1c
Tab. 10.4.1
