Submittal Sheet

Q5001 VALVE LINKAGE FOR MODUTROL IV MOTOR
63-2425—01 8
OPERATION AND CHECKOUT
The Q5001 Valve Linkage operates the valve in a 160-degree
stroke. See Fig. 6. As shown, a normally closed spring return
motor will rotate the cam through the 160-degree stroke to lift
the stem the distance prescribed by the selected cam. On loss
of power, the spring will return the motor, linkage and valve to
the closed position.
For normally open spring return models, reverse the closed
and open captions in Fig. 6.
After installation and adjustment are completed, run valve/
linkage/motor combination through two or more full cycles to
make sure the combination operates properly.
Refer to the appropriate Modutrol IV Motor instruction sheet for
information on running the motor during checkout.
1. A 2-way valve should close off tightly at the closed end of
its stroke.
2. A 3-way valve should close off tightly at both ends of its
stroke. See Table 4 on page 8.
3. The motor should be free to run through its complete
stroke without stalling.
4. The linkage should operated freely without binding.
Lubrication
The Q5001 does not require any lubrication.
Spring Compression
Spring compression for the Q5001 is shown in Table 4 on
page 8.
If spring compression is less than minimum or more than
maximum, verify that the correct cam was used. If the correct
cam was used, remove valve stem clip and adjust valve stem
button after set screw has been loosened. See Table 4 on
page 8.
Measure spring compression by measuring the distance
between the lever end and the end of the spring slot. See Fig.
7.
Fig. 6. Q5001 operation.
Maximum spring compression = 11/32 in. [8.7 mm].
Table 4. Minimum Spring Compression in in. [mm] (See
Fig. 6.).
O.S. Number
Stem Force Load
80 lb 160 lb 320 lb
Q5001A1006 3/64 [1.2]
Q5001A1014 3/32 [2.4]
Q5001D1000 3/64 [1.2] 3/32 [2.4]
Q5001D1018 3/64 [1.2] 3/32 [2.4]
Q5001D1026 3/64 [1.2] 3/32 [2.4]
M5400
1
160˚
10˚
CW
MOTOR
LIMIT
OPEN
2-WAY
OR
3-WAY
VALVE
CLOSE
10˚
CW
MOTOR
LIMIT
2
VALVE CENTER LINE
LINES REPRESENT POSITION OF CAMS (VIEWED FROM
POWER END OF MOTOR).
SPRING RETURN MODELS: SPRING DRIVES MOTOR AND
VALVE CLOSED IF POWER IS TURNED OFF.
2
1