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 (6) Remove capscrews (13) from drive endbell (12), and
5-35. Controller
pull drive endbell from drive end bearing housing.
a. General.
(7) Remove screws (14) from drive end bearing outer
(1) The bilge and ballast pump motor controller is a
housing (15), and remove housing.
direct current, single step acceleration type, with thermal
(8) Pull drive end bearing (16) and bearing inner housing
overload relay protection. The starting cycle is controlled by a
(11) from armature shaft.
pneumatic timing relay.
(9) Remove screws (2) from commutator end outer
(2) When control circuit is completed by pressing
bearing housing (1), and remove housing.
START button, main line contactor operates and the motor is
(10) Pull commutator end bearing (17) and inner bearing
started through the armature resistance. Upon completion of
housing (5) from armature shaft.
the timing cycle, the timing relay closes its contacts and
d. Cleaning and Inspection.
energizes the coil accelerating relay. The accelerating relay
(1) Blow loose dirt from windings with clean, dry, low-
operates and shunts out resistance and permits motor speed
pressure air.
to increase to normal running speed.
(2) Wipe all parts clean using cloth moistened with dry
b. Cleaning and Inspection.
cleaning solvent in conformance with FED SPEC P-D-680.
(1) Keep interior and exterior of enclosure clean.
(3) Inspect windings for evidence of short circuit or
(2) Keep mating surfaces of magnetic coil free of any
damaged insulation. If armature windings are defective,
accumulation to dirt.
replace armature. If field windings are defective, replace
(3) Inspect contacts for excessive burning or wear.
motor.
Smooth excessive roughness from copper contacts with a fine
(4) Inspect commutator for grooving or burring. If
file. Do not file silver contacts. Replace contacts worn to
commutator cannot be smoothed by taking a light cut in a
one-half original thickness.
lathe, replace armature.
(4) Check all connections for tightness and cleanliness.
(5) Check bearings for roughness when rotated by hand.
c. Accelerating Contactor.
Replace defective bearings.
(1) Replace contacts as follows:
e. Assembly.
(a) Swing arc barriers (2 and 3, fig. 5-72).
(1) Assembly is in reverse order of disassembly.
(2) Pack new bearings with lubricant in accordance with
KEY to fig 5-72
LO 55-1925-204-12.
1.
Screw
19.
Spring, helical, armature return
(3) Adjust brush tension. Replace brush springs that
2.
Arc barrier, rh
20.
Screw
cannot be adjusted to proper tension (a. above).
3.
Arc barrier. Ih
21.
Lockwasher
f. Installation.
4.
Side plate, rh
22.
Contact, movable
5.
Side plate. lh
23.
Nut
(1) Set motor in place on foundation.
6.
Screw
24.
Guard
(2) Install mounting bolts; do not tighten.
7.
Lockwasher
25.
Support
(3) Check coupling alignment. Make sure couplings fit
8.
Arc horn
26.
Finger
flush all around and are on the same plane.
9.
Post
27.
Terminal
(4) Install bolts in couplings and tighten.
10.
Contact. stationary
28.
Frame
(5) Tighten motor foundation bolts.
11.
Coil relay
29.
Clamp
(6) Connect electrical wiring in motor connection box.
12.
Contact. movable
30.
Screw
13.
Spring, helical, Contact
31.
Screw
14.
Washer
32.
Pole face
15.
Cotter pin
33.
Screw
16.
Armature
34.
Clamp
17.
Post
35.
Magnet coil
18.
Support
36.
Terminal post
37.
Blowout coil
5-95
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