Aster, Ntake, Alve – Hale Master Intake Valve User Manual
Page 32
30
M
ASTER
I
NTAKE
V
ALVE
G
N
I
T
A
R
E
P
O
M
U
M
I
X
A
M
E
V
L
A
V
E
K
A
T
N
I
R
E
T
S
A
M
E
U
Q
R
O
T
N
E
P
O
O
T
E
S
O
L
C
O
T
G
N
I
N
N
U
R
)
m
-
N
1
1
(
n
i
-
b
l
0
0
1
)
m
-
N
1
1
(
n
i
-
b
l
0
0
1
)
m
-
N
3
(
n
i
-
b
l
5
2
Table 2. Maximum Operating Torque
NOTE: On MIV-M valves the maximum
force at the knob on the handwheel is
46 lb (205 N) to open or close and 11 lb
(49 N) running.
TESTING MIV-E VALVES FOR PROPER
OPERATION
The following is a test to determine if the
MIV-E valve is operating correctly
electrically.
1. The limit switches stop the rotation and
therefore the position of the butterfly
disc.
NOTE: The mechanical stops MUST NOT
STOP THE ROTATION OF THE MIV-E when
operated electrically.
2. To check for proper operation remove
gearbox mechanical stops (long set
screws) from gearbox.
3. Carefully operate the valve using panel
toggle switch. Watch indicator on top
of gearbox. If valve is operating
properly the valve will stop rotating
when the indicator is close to legend on
gearbox.
CAUTION: Do not allow segment gear in
gearbox to hit gear housing or damage
could result to gearmotor.
4. If valve continues to rotate past legend
by about
3
/
8
inch STOP. Try operating
valve in opposite direction, valve should
not operate if over-travel (indicator
moving past legend) occurred.
5. Manually turn valve back in opposite
direction until amber light illuminates.
6. Carefully operate the valve in the
opposite direction using panel toggle
switch and repeat steps 3 and 4 above.
7. If the valve operated properly in both
directions the valve works correctly
electrically.
If valve did not operate properly in both
directions a check of the electrical
wiring Figure 13 will be necessary. It is
most likely the “+” and “-” voltages are
reversed. Pay close attention to the
switch wiring on the panel placard, the
gearmotor terminals or wiring at the
micro switches.
8. Operate the valve open then closed.
See that motor stops, the red lamp is lit
and the valve disc is in the closed
position.
9. Tighten the mechanical stop until it just
touches the segment gear, then back
out ½ to ¾ turn. Lock in place.
10. Operate the valve open then closed.
See that the motor stops electrically and
not against the mechanical stop. When
the motor stops operating, the
handwheel should be able to rotate
about ¾ turn before stopping against
mechanical stop. If not, back out
setscrew another ¼ turn and repeat
step.
11. Operate the valve to the open position.
See that motor stops, the green lamp is
lit and valve disc is in the open position.
12. Tighten the mechanical stop until it just
touches the segment gear, then back
out ½ to ¾ turn. Lock in place.