8
Handling and adjustment
The unit is adjustable in the range from 2 to 250 revolutions. Adjustment procedure is as follows:
a) Once the actuator has been fixed to the valve, set valve to
“closed“
position using the actuator.
b) In this position, push tripping rod 58 in vertical direction and then turn it by 90 degrees in any direction.
b) Turn the adjusting shaft 56 in
“Z”
arrow direction until the cam 57 pushes the spring of micro switch SQT1
(PZ)
63.
d) Turn the tripping rod 58 by 90°. Tripping rod will slip out again. If tripping rod fails to slip out, just very slightly turn shaft
56 or 59.
e) Use the actuator to move the valve by the required number of revolutions to "open" position.
f) Again push tripping rod 58 in vertical direction and then turn it by 90 degrees in any direction.
g) Turn the adjusting shaft 59 in
“O”
arrow direction until cam 60 pushes the spring of micro switch SQC1 61.
h) Turn tripping rod 58 by 90°. Tripping rod will slip out again. If tripping rod fails to slip out, just very slightly turn shaft 59
or 56.
Remark:
Stop turning the adjusting shaft 56, 59 at the moment of switching!
If, prior to adjustment, the cams are rotated by 270° compared to position in Fig. 6 or if cam has already pushed
the micro switch button, it is advisable to proceed adjustment as follows:
After pushing and turning tripping rod 58, turn the adjusting shaft 56 or 59 against arrows direction until the
cam's tip leaves the micro switch lever
(towards the closest adjusting shaft)
and the micro switch switches
(use
suitable tester to make sure that micro switch has switched).
Then turn adjusting shaft 56 or 59 in arrow direction to
turn the cam’s tip back to the micro switch lever until the micro switch switches again
(micro switch button)
is
pressed. Now the micro switch has been adjusted. Then slide tripping rod 58 out as described above.
6. PACKING AND STORING
The actuators are packaged together with the valve on which they are mounted. The packaging method applicable to
this valve assembly must be included in the technical conditions for the valves with the actuator mounted. During the
transportation of the actuators from the manufacturer’s factory to the domestic valve manufacturer where the product is to
be completed with the valve, the product must be covered. In such a case, the actuators are transported unpackaged. In
the event of direct delivery of actuators without valves to the nuclear power plants the actuators are packaged according
to a special regulation.
After receipt of actuators from manufacturer, actuators must be checked for possible damage suffered during transport.
Compare if data on serial plates of actuators correspond with the accompanying documentation and the purchase order.
Possible discrepancies, defects or damage must be immediately reported to supplier.
If the packed actuator is not installed immediately after receipt, it must be stored in dust-free room with ambient
temperature between -50 °C and +50 °C, with relative humidity up to 75%, free from corrosive gases and fumes,
Legenda:
55 – Decade gear
56 – Set screw “Z”
57 – Tripping cam “Z”
58 – Tripping cam
59 – Set screw “O”
60 – Tripping cam “O”
61 – SQC1 switch (PO)
63 – SQT1 switch (PZ)
Fig. 6 –
Positioning unit
Numbers in circles correspond to terminal numbers
on the terminal board.
P6
1
P4
66
4
66
2
P3
P1
P5
Z
P2
3
66
SQC2 (SO)
SQT2 (SZ)
SQC2 (SO)
SQT2 (SZ)
25
29
P1
22
26
23
27
P2
24
28
6.
10
SQFC1 (MO)
SQFC1 (MO)
9.
8
7
SQFT1 (MZ)
P3
13
12
SQFT1 (MZ)
P4
11
20
19
14
17
SQC1 (PO)
15
SQC1 (PO)
SQT1 (PZ)
21
16
18
P6
SQT1(PZ)
P5
22
29
45
P4
19
20
P3
21
24
44
26
28
46
23
25
27
31
32
36
30
33
34
P1
38
37
39
Z
35
P2
63
62
P5
61
55
56
57
P6
58
59
60
1O
O
1O
O
Z
1O
Z
O
O
1O
O
Z
Z
O
P6
1
P4
66
4
66
2
P3
P1
P5
Z
P2
3
66
SQC2 (SO)
SQT2 (SZ)
SQC2 (SO)
SQT2 (SZ)
25
29
P1
22
26
23
27
P2
24
28
6.
10
SQFC1 (MO)
SQFC1 (MO)
9.
8
7
SQFT1 (MZ)
P3
13
12
SQFT1 (MZ)
P4
11
20
19
14
17
SQC1 (PO)
15
SQC1 (PO)
SQT1 (PZ)
21
16
18
P6
SQT1(PZ)
P5
22
29
45
P4
19
20
P3
21
24
44
26
28
46
23
25
27
31
32
36
30
33
34
P1
38
37
39
Z
35
P2
63
62
P5
61
55
56
57
P6
58
59
60
1O
O
1O
O
Z
1O
Z
O
O
1O
O
Z
Z
O
