P.O. Box 40525 · Houston, Texas USA 77240-0525
Tel: 713·466·3552 · Fax: 713·896·7386
www.norriseal.com
1001-0113O — ©2013, January 2013
I
NTRODUCTION
C A U T I O N !
The instructions provided herein should
be completely reviewed and understood
prior to installing, operating or repairing
this equipment. All ATTENTION, CAU-
TION, DANGER and WARNING notes
must be strictly observed to prevent seri-
ous injury or equipment malfunction.
Scope
This manual includes installation,
operation and maintenance infor-
mation for 1.5 through 6.0-in.
Norriseal Series 1001, 1001A, and
1001XL Level Controllers.
Description
The Series 1001, 1001A, and 1001XL
Level Controllers are designed for
general purpose use in liquid level
and interface control applications
calling for either modulating
(Throttle) or on/off (Snap) pneumatic
service and can be direct or reverse
acting. Electric switch models are
also available.
Norriseal level controllers are
equipped standard with horizontal
or vertical PVC 1.88 x 12-in. displac-
ers. Displacer options include Acrylic
and 316L S.S. materials in various
lengths and diameters, including
hinged models, to accommodate a
wide range of control applications.
The 1001 has a smaller case than the
1001A or 1001XL and has a knurled
knob screw type closure. The 1001A
and 1001XL have lever latch door
closing mechanisms and have a
sealed door. The 1001 and 1001A
have the case mounted left or right
of the body, while the 1001XL is cen-
ter-back mounted.
C A U T I O N !
Before disassembly or maintenance, all
pressures in this device must be relieved.
Failure to relieve pressures may result in
personal injury or device damage. The
resulting uncontrolled venting or spilling
of process fluids may cause personal
injury, loss of process control or environ-
mental contamination.
Controller Identification
Controller model numbers are typi-
cally 13 positions long (example:
2SM60-SRDA-BG). Refer to Table 1
— Model Designation on page 2 for
specific information on the controller
nomenclature.
A nameplate attached to the inside of
the case by the lower door hinge
includes the controller model and
serial numbers as well as other infor-
mation pertinent to the controller
assembly, such as supply and out-
put pressures, displacer material and
rating, body size and material, ANSI
class, and pressure and temperature
limits.
Always use only Norriseal replace-
ment parts when servicing level con-
trollers. Please refer to the serial and
model numbers when ordering
replacement parts.
Page 1 of 12
O
PERATING AND
M
AINTENANCE
M
ANUAL
Series 1001, 1001A, 1001XL Level Control
CONTENTS
PAGE
I
NTRODUCTION
1
Scope
1
Description
1
Controller Identification
1
P
RINCIPLE OF
O
PERATION
3
P
ILOT
O
PERATION
4
1.0 L
EVEL
C
ONTROLLER
I
NSTALLATION AND
S
TART
-
UP
5
1.0 L
EVEL
A
DJUSTMENT
6
1.2 L
IQUID
L
EVEL
I
NTERFACE
6
2.0 L
EVEL
C
ONTROLLER
M
AINTENANCE
7
2.1 L
EVEL
C
ONTROLLER
P
REVENTIVE
M
AINTENANCE
7
2.2 L
EVEL
C
ONTROLLER
D
ISASSEMBLY
7
2.3 L
EVEL
C
ONTROLLER
R
EASSEMBLY
7
2.4 P
ILOT
R
EMOVAL
/R
EPLACEMENT
8
2.5 L
EVEL
C
ONTROLLER
D
ISASSEMBLY
C
ASE
M
OUNTING
C
ONVERSION
9
2.6 L
EVEL
C
ONTROLLER
D
ISASSEMBLY
P
ILOT
A
CTION
C
ONVERSION
9
2.7 L
EVEL
C
ONTROLLER
B
ODY
D
ISASSEMBLY
9
2.8 L
EVEL
C
ONTROLLER
B
ODY
R
EASSEMBLY
9
3.0 R
EPAIR
K
ITS
10
T
ABLES
Table 1 — Model Designation
2
Table 2 — Wiring Diagrams
10
Tabla 3 — Trouble Diagnosis
11
A
B
S
Q
ua
lity Evaluation
s,
In
c.
M
a
n
a
ge
m
ent S
ystem C
er
tif
ic
a
ti
o
n
