Dwyer AP User Manual
Page 2
AC Capacity
DC Capacity
Horsepower
Code Circuit Suffix No. 120V
240V 440V
120V
240V
AC
DC
P
-2, -3
10A
5A
3A
10A
5A
3/4
1/3
R
-26, -36
17A AT 120/240/277 VAC, Resistive balance same as above.
S
-153
4A
2A
NA
4A
2A
1/8
NA
T
-88, -89
0.5A
0.25A NA
0.25A 0.125A
Model Chart – Series AP
AP _
_
153
_ 36 AP-153-36 Pressure Control, fixed deadband, automatic reset, SPDT mercury switch,
adjustable range 1-20 psig (0.07-1.4 bar), maximum pressure 60 psig (4.1 bar)
AP
General Purpose enclosure, NEMA-1.
UL
CSA
AS
Low pressure steam switch, NEMA-1, range 34 only. Circuits, 2, 3, 26, 36, 153 only.
UL
PTFE covered diaphragm, plated steel pressure port.
F
Factory Mutual approved, NEMA-1, circuit 153 only. Range 37 only.
UL FM CSA
APF-153-37 or APF-7021-153-37 only.
R
U
Manual reset – operates on decrease automatically. NEMA-1 only.
UL
CSA
Not available with circuit 88, 89 or snap switch type.
R
L
Manual reset – operates on increase automatically. NEMA-1 only.
UL
CSA
Not available with circuit 88, 89 or snap switch type.
S
Less enclosure
UL
CSA
WT
Weather-proof enclosure, NEMA-4.
W
Weather-proof enclosure with condensate drain, NEMA-2, 3R.
UL
CSA
H
Explosion-proof enclosure, NEMA-7, 9, Class I Group, C & D; Class II Group E, F & G.
UL
_
2
SPST mercury switch, Electrical Code P* – opens on pressure increase.
UL
CSA
_
3
SPST mercury switch, Electrical Code P*– closes on pressure increase.
UL
CSA
_
26
SPST mercury switch, Electircal Code R* – closes on pressure increase.
UL
CSA
Not available with range 33.
_
36
SPST mercury switch, Electrical Code R* – opens on pressure increase.
UL
CSA
Not available with range 33.
_
88
SPST magnetic mercury switch, Electrical Code T* – closes on pressure increase.
UL
CSA
_
89
SPST magnetic mercury switch, Electrical Code T* – opens on pressure increase.
_
153
SPDT mercury switch, Electrical Code S*.
UL
CSA
_
( )
Other circuits available, consult factory.
70_ _ 153
SPDT snap acting switch, rated 15A at 120 VAC, 8A at 240 VAC, 0.5A at 120 VDC,
UL
CSA
0.25A at 240 VDC, 3/4 hp at 120 VAC, 1 hp at 240 VAC.
70_ _ 804
DPDT: 2 each SPDT snap acting switches, rated 5A at 120/240 VAC, 5A at 30 VDC resistive
UL
CSA
80_ _ 153
SPDT snap acting switch, rated 15A at 120 VAC, 8A at 240 VAC, 4A at 480 VAC, 6A at 24
UL
CSA
VDC resistive, 0.5A at 120 VDC, 0.25A at 240 VAC, 3/4 hp at 120 VAC, 1.5 hp at 240 VAC.
_ _
Mercury switch type. Plated steel pressure port, Buna-N diaphragm.
UL
CSA
41
Mercury switch type. 316 stainless steel pressure port, PTFE diaphragm.
7021
Snap switch type. Plated steel pressure port, Buna-N diaphragm.
UL
CSA
8021
Snap switch type. Plated steel pressure port, Buna-N diaphragm.
UL
CSA
7041
Snap switch type, 316 stainless steel pressure port, PTFE diaphragm.
8041
Snap switch type, 316 stainless steel pressure port, PTFE diaphragm.
33 Adjustable range 10˝ wc VAC –50˝ wc (250 mm VAC to 1250 mm wc),
UL
CSA
maximum pressure 15 psig.
34 Adjustable range 1-15 psig (0.07 to bar), AS only, maximum pressure
UL
CSA
30 psig (2.1 bar), maximum temperature 275°F (135°C) psig.
36 Adjustable range 1-20 psig (0.07-1.4 bar), maximum pressure 60 psig (4.1 bar)
UL
CSA
37 Adjustable range 1-30 psig (0.07-2.1 bar), maximum pressure 60 psig (4.1 bar).
UL
CSA
39 Adjustable range 10-125 psig (0.7-8.6 bar), maximum pressure 160 psig (11 bar).
UL
CSA
Example
Construction
Reset Options
Housing Options
Circuit (Switching)
Options
Wetted Materials
Adjustable
Pressure Ranges
& Maximum
Operating
Pressures
* See Chart below.
ELECTRICAL RATING MERCURY SWITCH