Instructions

Tank Float Switch Bulletin No. 65013-008-71A
Class 9037 Type EG April 2000
© 1985–2000 Schneider Electric All Rights Reserved
2
This device does not provide motor protection. However, it can be used as a
pilot to operate a starter that provides motor protection. Contact your Square D
sales office for information on a complete line of motor protective devices.
Switches are factory set to a specific float travel for a given length of rod. Float
travel is adjustable in the field. The guard provided with the float switch
prevents the operating lever from becoming tangled with the load and line
wires.
Remove the guard by loosening, not removing, the holding screws. Decrease
float travel by turning the adjusting nut (A) downward and the adjusting nut (B)
upward. Increase float travel by turning the adjusting nut (A) upward and the
adjusting nut (B) downward.
NOTE: You must leave approximately 1/16 in. clearance between the adjusting
nuts (A and B) and the operating lever (C). If you do not maintain this
clearance, the mechanism will bind. Check the clearance when the contacts
are closed.
The float switch can be mounted in three positions as shown in Figures 1-3.
Refer to Tables 2-5 for rod kits that are available for these positions.
Table 2: Rod Kits for Class 9037, Type EG-8 and EG-10 Float Position 1
Class
9049
Rod
Kits
A
[2]
F
[2]
Water Level
Change
EG-8
[1]
EG-10
[1]
R
[2]
H
[2]
Min Max Min Max Min Max Min Max
ER-1 1-3/4 8-1/4 1 2 3-1/16 4-1/16 4-3/4 6 1-3/4 3
ER-2 2-1/2 9 1 2 3-1/16 4-1/16 4-3/4 6-1/4 1-3/4 3-1/4
ER-3 3-1/4 9-1/2 1 2 3-1/16 4-1/16 4-3/4 6-1/2 1-3/4 3-1/2
ER-5 5-1/4 11-3/4 1 2-1/2 3-1/16 4-9/16 4-3/4 6-3/4 1-3/4 3-3/4
ER-7 7-1/4 13-3/4 1 3 3-1/16 5-1/16 5 7-1/4 2 4-1/4
ER-12 12-1/4 18-3/4 1 4-1/4 3-1/16 6-5/16 5-3/4 9 2-3/4 6
[1]
Dimensions are in inches.
[2]
Letters refer to Figure 1.
Table 3: Rod Kits for Class 9037, Type EG-9 and EG-13 Float Position 1
Class
9049
Rod
Kits
A
[2]
F
[2]
Water Level
Change
EG-9
[1]
EG-13
[1]
R
[2]
H
[2]
Min Max Min Max Min Max Min Max
ER-1 1-3/4 7-1/2 1 4 3-1/16 6-1/16 6 9 3 6
ER-2 2-1/2 8-1/4 1 4-1/2 3-1/16 6-9/16 6-1/4 9-3/4 3-1/4 6-3/4
ER-3 3-1/4 9 1 5 3-1/16 7-1/16 6-1/4 10-1/4 3-1/4 7-1/4
ER-5 5-1/4 11 1 6 3-1/16 8-1/16 6-1/2 11-1/2 3-1/2 8-1/2
ER-7 7-1/4 12 1 7-1/2 3-1/16 9-9/16 6-1/2 13 3-1/2 10
ER-12 12-1/4 18 1 9-1/2 3-1/16 11-9/16 9 17-1/2 6 14-1/2
[1]
Dimensions are in inches.
[2]
Letters refer to Figure 1.
MOTOR PROTECTION
ADJUSTMENT
A
C
B
ROD KITS
P
R 4-1/2 in.
H
3-5/8 in.
1-13/16 in.
A min
F
P= (post clearance dimension) is 2-5/8 in. for
short post models. On long post models (types
EG-9 and EG-13) this distance is 4-11/16 in.
Figure 1: Float Position 1 - Vertical
mounting, sump operation;
contacts close as liquid level
rises