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Honeywell Pressuretrol L404 Series Manual page 3

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Switching
Action on
Pressure Rise
to Setpoint
Model
L404A
spst, breaks
circuit
i
L404B
spst, makes
circuit
L404C
spst, breaks
circuit
L404D
spst, makes
circuit
L404F
spdt snap-acting
h
switch,
makes
R-W, breaks R-B
L604A
2 isolated spst
circuits, or 1
j
spdt,
makes R1-
W, breaks R2-B
L604L
spdt circuit
makes R-W,
breaks R-B
L604M
spdt circuit
makes R-W,
breaks R-B
a
Scaleplates are marked in both psi and kg/cm
b
Model available with special fixed low differential. Switch rated for 0.5A at 120 Vac.
c
L404A,B and L604A models are available with 1 to 6 psi midscale subtractive differential in 2 to 15 psi models.
d
Brass bellows replaces stainless steel diaphragm. Not suitable for use with ammonia, oxygen, or other corrosive materials.
e
Model available with minimum operating pressure of 1.25 psi (0.09 kg/cm
2
(0.035 kg/cm
or 3.45 kPa).
f
Model available with special fixed low differential. Switch rated for 0.5A at 120 Vac.
g
L404C,D and L604L models are designated as Manual Reset 2 controllers; the trip-free reset mechanism does not permit the controller to
function as an automatic-reset device when the manual reset lever is held in the reset position. The subtractive differential is fixed at the
minimum value of the adjustable differential of the L404A for each corresponding operating range.
h
L404F only; all other models have mercury switches.
i
Model available with sealed bell crank adjustment.
j
Spst switches operate in unison; spdt action when jumper is installed between R1 and R2.
k
Also recommended for supervision of atomizing medium pressure (air or steam) in an oil burner system.
Model
L404A
b
L604A,L
L604M
a
L404F (snap-acting) does not have non-inductive or dc ratings.
b
L604A and L have also been tested (and listed by Underwriters Laboratories Inc.) and breaking (not making) a load with a total
rating of 9.8 A full load, plus 360 VA ignition, plus 250 VA pilot duty at 120 Vac.
TABLE 1—MODELS AVAILABLE.
a
Operating Ranges
2
psi
kg/cm
b,c
2 to 15
.14 to 1.0
14 to 103
5 to 50
.35 to 3.5
34 to 345
b
10 to 150
.66 to 10.6
69 to 1034
d
20 to 300
1.4 to 21.0
138 to 2068
c,e,f
2 to 15d,
.14 to 1.1
14 to 103
5 to 50
.35 to 3.5
24 to 345
e,b
10 to 150
.66 to 10.6
69 to 1034
d
20 to 300
1.4 to 21.0
138 to 2068
2 to 15
.14 to 1.0
14 to 103
5 to 50
.35 to 3.5
34 to 345
10 to 150
.66 to 10.6
69 to 1034
d
20 to 300
1.4 to 21.0
138 to 2068
2 to 15
.14 to 1.0
14 to 103
10 to 150
.66 to 10
69 to 1068
2 to 15
.14 to 1.0
14 to 103
i
5 to 50
.35 to 3.5
34 to 345
10 to 150
.66 to 10
69 to 1034
d
20 to 300
1.4 to21.0
138 to 2068
c
2 to 15
.14 to 1.0
14 to 103
5 to 50
.35 to 3.5
34 to 345
10 to 150
.66 to 10
69 to 1034
d
20 to 300
1.4 to21.0
138 to 2068
2 to 15
.14 to 1.0
14 to 103
10 to 150
.66 to 10.1
69 to 1034
2
SWITCH CONTACT RATING (in amperes at 50/60 Hz):
Load
Full Load
Locked Rotor
a
Noninductive
Full Load
Locked Rotor
Noninductive
Full Load
Midscale Subtractive Differential
(Adjustable)
2
kPa
psi
kg/cm
2 to 6
.14 to .41
4 to 12
.28 to.82
8 to 16
.56 to 1.10
15 to 40
1.04 to 2.76
2 to 6
.14 to .41
4 to 12
.28 to .82
8 to 16
.56 to 1.10
15 to 40
1.04 to 2.76
manual reset
(fixed, subtractive differential)
manual reset
(fixed, subtractive differential)
2 to 6
.14 to .41
6 to 14
.41 to .97
10 to 22
.69 to 15.2
20 to 50
1.4 to 3.5
2 to 6
.14 to .41
4 to 12
.28 to .82
8 to 16
.56 to 1.10
15 to 40
1.04 to 2.76
manual reset
(fixed, subtractive differential)
fixed: 3.5 psi (24.1 kPa)
2
or 8.62 kPa) and minimum subtractive differential of 0.5 psi
120 Vac
240 Vac
8.0
5.1
48.0
30.6
10.0
5.0
8.0
5.1
48.0
30.6
10.0
5.0
1.0
0.5
3
L404A-D,F; L604A,L,M
SPECIFICATIONS
a
Maximum Surge
Pressure
2
kPa
psi
kg/cm
14 to 4
50
3.5
127 to 83
85
6.0
55 to 110
225
15.8
103 to 276
500
35.2
14 to 41
50
3.5
27 to 83
85
6.0
55 to 110
225
15.8
103 to 276
500
35.2
50
3.5
85
6.0
225
15.8
500
35.2
g
50
3 5
225
15.8
14 to 41
50
3.5
41 to 97
85
6.0
60 to 152
225
15.8
138 to 345
500
35.2
14 to 41
25
1.8
27 to 83
85
6.0
55 to 110
225
15.8
103 to 276
500
35.2
g
25
1.8
225
15.8
120 Vdc
240 Vdc
2.4
1.2
24.0
12.0
5.0
2.0
2.0
1.0
20.0
10.0
8.0
4.0
1.0
0.5
60-2150—10
kPa
345
586
1550
3445
345
586
1550
3445
345
586
1550
3445
345
1550
345
586
1550
3445
172
586
1550
3445
172
1550

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