GENERAL PURPOSE CONTROLS, TYPES DA, DL, DR, DS
Mount control in any position. Do not twist the case when
installing. Use a wrench on the square part of the control
connection. On controls with operating Range No. 15S (500
to 5000 psi (34.47 to 344.75 bar)) or Range No. 16S (800
to 8000 psi (55.16 to 551.6 bar)), be sure the special seal-
ing nut (with Teflon
®
insert) is turned to the uppermost
threaded section of the
1
/
2
″
pressure connection. Apply a
flat open-end wrench to the flat side of the bottom pressure
connection when piping the control. After properly con-
necting the control, tighten the sealing nut to assure a leak-
proof connection.
FLANGED CASE CONTROLS
Mount by means of the three holes in the flange. Note:
Series D7030 when used for steam with operating ranges of
35 psi (2.413 bar) or higher, must be siphoned to prevent
live steam entering the Bourdon tube. With high-pressure
steam exceeding 100 psi (6.895 bar), use a remote con-
nection. (Note accessories on Page 1.)
Series D-7020 incorporate an orifice as standard in the
pressure connection to dampen surges or pulsations.
WEATHER-RESISTANT (RAINTIGHT)
NEMA 2, 3, TYPES N3DAW, N3DRW, N3DSW
These switches are supplied with flanged case, bottom con-
nection, for surface mounting.
WATERTIGHT AND WEATHERPROOF
NEMA 2, 3, 4, 5, TYPES DAW, DRW, DSW, C4DAW*,
C4DAW*, C5DSW*
These switches are supplied with flanged case, bottom con-
nection, for surface mounting only.
*
Conforms to Canadian Standards Association requirements
EXPLOSION-PROOF TYPES DAH, DRH, DSH
Mount with mounting lugs attached to control housing.
WIRING
Wire in accordance with the National Electrical Code and
local regulations. For general purpose controls, use a short
piece of BX between the rigid conduit and the control so the
control will not be subjected to conduit expansion and con-
traction. Where the control is directly connected into the
load circuit, it should be connected into the hot side of the
line. Do not exceed electrical rating as stamped on the con-
trol nameplate. DS-7300 controls are equipped with a ter-
minal block. Field connection should be made to terminal
block pole in common with required pole of the control’s
switch. The color code is:
Black - Common
Blue - ON Hi
Red - ON Lo
Bulletin IN-523
Page 2
MOUNTING
HOLES (OPTIONAL)
1/2
NPT
9-7
/8
BREATHER
(OPTIONAL)
5
3/4
CONDUIT
CONNECTION
13/32
DIA.
1/4
NPT
7-3/4
3-1/2
Explosion-Proof
Types DAH, DRH, DSH
6-
1/2
DIA.
13/64
DIA.
BACK
CONNECTION
BOTTOM CONNECTION
DA24
DA34
DA44
DA23
DA33
DA43
Flange for Surface Mounting
HOLES FOR
FLANGE SCREWS
1/2
CONDUIT
CONNECTION
6-1/64
DIA.
1/4
NPT
1-
1/2
1/4
NPT
1-1/8
[«\«1
DA21
DA31
DA41
DA22
DA32
DA42
3
General Purpose
Types DA, DS, DR, DL
REAR FLANGE MOUNTING HOLES (3)
2-13/16
1/4
NPT
[\««1
7
DIA.
ADJUSTMENTS
1/2
CONDUIT
HUB
GASKETED COVER
Weather-Proof
Types DAW, DSW, DRW
