Adjustment of Auto-
Stop Valve
To Adjust Valve Linkage
Page 8
1. Remove clevis pin (E) from valve linkage.
2. Unscrew the outside register link lock nut (P) and remove connecting rod (G) and clevis (F)
as a unit.
3. Remove register link (N), rotate 1/2 turn and reassemble onto register as described in ap-
propriate valve adjustment instructions.
4. Loosen two clamp screws on lower front of register, lift register up and turn register 180
°
.
5. Remove operating shaft cap screw (C) on both sides.
6. Interchange connecting rod arm (H) and valve operating handle (A). The connecting rod arm
must be assembled with notches (J and K) in specific relationship. (See item 3 of valve
adjustment instructions for details regarding position of notches.)
7. Reassemble operating shaft cap screws (C).
8. Remove valve handle stop set screw (B) and screw into hole on opposite side of valve.
FIGURE 8
VIEW LOOKING AT BACK OF REGISTER
After completing the above instructions, the valve linkage must be adjusted in accordance with
the following procedure:
Adjustment Of Auto-Stop Valve
Before any adjustment of the valve is made, be sure that the Preset setting wheels indi-
cate a quantity other than zero to insure that the trip mechanism of the register is in proper
position.
To Adjust Valve Linkage
1. Depress the emergency stop button on the register and turn the shaft (O) clockwise.
2. Assemble register arm (N) on knurled knob in position as shown for specific assembly. (See
Fig. 8). Arm should move an equal distance each side of vertical center line (M) (Angle x = x).
3. Assemble valve arm (H) as shown for specific assembly. On the right hand assembly there
must be one notch between the cast mark (K) on the valve arm and the cast mark (J) on the
stop plate (J above K). On the left hand assembly these cast marks must be in line.
4. Assemble one nut (P) on connecting rod (G) and assemble clevis to the other end of the
connecting rod a distance of 1
″
.
5. Insert end of connecting rod through register arm link and assemble clevis (F) to valve arm
(H) using upper hole. (See Figure 8). Insert clevis pin (E).
6. Open valve all the way. The opening of the valve is stopped by the set screw (B) which should
project approximately
1
⁄
8
″
below the lug holding it. Turn shaft (O) counterclockwise to latch up
mechanism. With valve held open, tighten nut (P) against register arm link. Then assemble
and tighten second nut at (P).
7. Depress the emergency stop button and allow the valve to close. At this point the linkage
between the valve and the register must be free. If it is not, the above adjustments must be
rechecked.
M
O
N
P
X
X
G
TO OPEN
F
E
A
B
DIRECTION OF FLOW
Y
H
J
K
C
D
OUTLET
RIGHT HAND
ASSEMBLY
M
O
N
P
X
X
G
TO OPEN
F
E
A
B
DIRECTION OF FLOW
Y
H
J
K
C
D
OUTLET
LEFT HAND
ASSEMBLY