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
C. Electric Pilots —
Hermetically Sealed
1. DISCONNECT THE POWER
SUPPLY CIRCUIT BEFORE
CONTINUING.
2. Disconnect the wire leads.
Remove the conduit coupling on
the top of the case, then the
switch nut, washer and O-ring.
Remove the switch. Loosen the
four screws retaining the switch
adapter and remove the switch
adapter.
3. Place the replacement switch in
the switch adapter, tighten the
screws, and place the assembly
in the case.
4. Replace the O-ring, washer and
switch nut. Tighten the switch nut,
replace and tighten the conduit
coupling, and connect the lead-in
wires.
2.5 L
EVEL
C
ONTROLLER
C
ASE
M
OUNTING
C
ONVERSION
1. Completely disassemble the con-
troller following the disassembly
instructions in Paragraph 2.2.
2. Reassemble the controller follow-
ing the instructions in Paragraph
2.3. The Level Adjusting Screw
will be placed at a 90° angle to that
in the original configuration. The
thumb screw in the Fulcrum will
be screwed into the opposite side
of the Fulcrum. The Level
Adjusting Bar, Level Adjusting
Screw, Fulcrum, Torque Bar,
Flapper Bar, Balance Spring and
stud bolt will all be on opposite
sides of the case from the original
configuration.
2.6 L
EVEL
C
ONTROLLER
P
ILOT
A
CTION
C
ONVERSION
1. Relax all tension on the Balance
Spring. 2. Remove the lock nut
from the Flapper Bar. Slide the
Flapper Bar off of the Pivot Pin.
3. Remove the thumb screw from
the Sensitivity Fulcrum and
replace it in the opposite hole on
the Fulcrum from which it was
removed.
4. Replace the Flapper Bar on the
Pivot Pin on the opposite side of
the case, with the thumb screw on
the Sensitivity Fulcrum pointing
out.
5. Secure the Flapper Bar with the
lock nut. NOTE: DO NOT tighten
this nut; the Flapper Bar must
move freely.
6. Adjust the tension on the Balance
Spring.
2.7 L
EVEL
C
ONTROLLER
B
ODY
D
ISASSEMBLY
1. Remove the body from the con-
troller assembly by following the
controller disassembly instruc-
tions in Paragraph 2.2.
2. Remove the two bearing blocks
(11⁄4-in. wrench) and the shaft.
Remove and discard the O-rings
in the body, on the shaft, and in
the bearing blocks.
2.8 L
EVEL
C
ONTROLLER
B
ODY
R
EASSEMBLY
1. Using new O-rings, install the
large O-ring over the threads of
the bearing block. Install the new
Teflon backup rings in each bear-
ing block, pressing them into
place with a 5⁄16-in. diameter rod.
Install the new O-rings in each
bearing block, pressing them into
place with a 5⁄16-in. diameter rod.
NOTE: A light oil applied to the
O-rings will assist in the assem-
bly procedure.
Figure 10 — End-on cutaway view of
controller body. As shown, the case
would mount to the left of the body
C A U T I O N !
If the bearing blocks are removed from
the body for any reason, the backup rings
and O-rings must be re-packed (pressed
into place). It is recommended that new
backup rings and new O-rings be used.
2. Replace the outboard bearing
block (with the “hubcap”) on the
side of the body AWAY from the
case mounting bolt holes.
3. Insert the shaft into the body and
firmly seat in the outboard bear-
ing.
4. Replace the remaining bearing
block on the body and tighten.
5. Reattach the body to the case per
Paragraph 2.3, step 1.
3.0 R
EPAIR
K
ITS
Norriseal provides three repair kits
for use in controller maintenance:
a Level Seals Kit (LSK), a Pilot Repair
Kit (PRK), and a Pilot Conversion Kit
(PCK).
O
PERATING AND
M
AINTENANCE
M
ANUAL
Series 1001, 1001A, 1001XL Level Control
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