Cottrell electrical precipitator, perforated plate type (half-wave mechanical rectifiers with automatic polarity control)

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WESTERN

PRECIPITATION

CORPORATION

COTTRELL

ELECTRIC PRECIPITATOR

PERFORATED PLATE TYPE

(HALF-WAVE MECHANICAL RECTIFIERS WITH AUTOMATIC POLARITY CONTROL)

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COTTRELL

ELECTRIC PRECIPITATOR

PERFORATED PLATE TYPE

(HALF-WAVE MECHANICAL RECTIFIERS WITH AUTOMATIC POLARITY CONTROL)

WESTERN

PRECIPITATION

CORPORATION

•

LOS ANGELES, CALIFORNIA

LIBRAR-

PERSONAL SAFETY

The high voltage current necessary for
the operation of a Cottrell Precipitator is
extremely dangerous and must be so
treated. It must be borne in mind that static
charges accumulate in the electrical equip-
ment and remain there after it has been
shut down, and that an arc may jump from
6" to 8", which makes a fatal shock possible
without actual contact.

Before approaching any danger point,
two precautions must be observed:

FIRST: Remove the voltage from that
part of the equipment by open-
ing the switch controlling it and
locking it in the open grounded
position. If there is only one
Precipitator unit in the installa-
tion, the entire electrical equip-
ment must be shut down. If
work is to be done on one of
several units which can be iso-
lated by a high tension discon-
nect switch, this switch must be
locked in the open grounded
position.

SECOND: High tension parts must be
grounded before they are ap-
proached. This is accomplished
by connecting a substantial wire

FIRST to the grounded steel
work and then to the high volt-
age part to be approached. If
the grounding is to be done in
an atmosphere of combustible
gas, the high tension part must
first be grounded OUTSIDE by
swinging the switch arm controll-
ing it to a ground contact and
keeping it there. If there is no
high tension switch, the line must
first be grounded at the rectifier.

These precautions must be observed when:

) Entering rectifier and transformer
screened enclosures.

Cleaning line insulators.
Cleaning Precipitator insulators.

Making adjustments inside of Precipi-
tator.

Making any contact with high voltage
parts.

Always apply ground at the point where
the parts are to be approached or con-
tacted whether grounded elsewhere or not.

WHEN IT IS THOROUGHLY
GROUNDED IT IS THOROUGHLY SAFE.

(b)

(c)
(d)

(e)

GENERAL DESCRIPTION

General dimensions and sections of the

Precipitator are shown on Figure 5491.
The Precipitator is of the perforated

plate type and efficient operation depends

on the factors listed below:

FIRST: The supply of the proper high
voltage current through the elec-
trical equipment to the Precipi-
tator.

SECOND: The proper conditioning of the
gas entering the Precipitator.

ELECTRICAL EQUIPMENT

SWITCHBOARD: (Figure 594 1 -L)

The functions of the switchboard instru-
ments are:

(A) The VOLTMETER is wired so that it
will be connected directly across the
transformer terminals.

(B) The AMMETER is connected in series
with the low tension winding of the
high tension transformer.

(C) The RECTIFIER MOTORS are special
synchronous induction motors operat-
ing the rectifiers in phase with the
alternating current from the high
tension transformer and are started
directly on the line. The motor start-
ing switches are three-pole magnetic-
ally operated units. The wiring is ar-
ranged so that the starter will close
when the lock switch is placed in the
"ON" position and the "START" but-
ton depressed momentarily.The starter
will remain closed when the "START"
button is released until the "STOP"
button is depressed, or the lock switch
is placed in the "OFF" position, or
the line voltage fails, or the thermal
overload relay trips.

(D) Power is applied to the TRANS-
FORMER by turning the "TRANS-
FORMER SWITCH" to the "ON"
position. Interruption of the rectifier
motor control circuit turns the trans-
former off.

(E) The RESISTANCE IN THE LOW
TENSION CIRCUIT OF THE TRANS-
FORMER is controlled by a rheostat
dial switch on the switchboard. This
resistance serves as a ballast in the
transformer circuit and also provides
means of regulating between the
"voltage taps" brought out from the

'• transformer primary.

(F) The TRANSFORMER VOLTAGE
TAPS are brought out to a dial switch.
They serve as a coarse adjustment of
transformer voltage.

(G) The OVERLOAD RELAY is connected
in series with the low tension winding
of the high tension transformer. The
contacts of this relay are con-
nected to the control circuit of the
magnetic contactor and the "ON-
OFF" switch and will trip out this con-
tactor upon continued overload.

MECHANICAL RECTIFIER:

The function of the mechanical rectifier is
that of a synchronously driven rotating
switch which permits a portion of the posi-
tive side of the alternating high voltage
wave to pass directly through the circuit
and to reverse a portion of the negative half
so that the current flowing in the circuit
from the rectifier is a unidirectional inter-
mittent current. This unidirectional current
may be either positive or negative with
relation to ground, depending upon which
phase quadrant the synchronous motor
carrying the rotor disc engages when it
comes to synchronism.

The desired polarity .(negative to the elec-
trodes) is automatically obtained through
the polarity control which consists of a com-
mutator energizing a relay through a rectox.
The relay in turn operates a reversing con-
tactor which applies the proper phase rela-
tion to the Cottrell transformer primary.

The automatic polarity control is adjusted
at the factory, however, should the brushes
be out of adjustment, the following proce-
dure should be followed:

(I) Loosen pin interlock on relay at rear

of switchboard so that relays may oper-
ate together.

(2) Remove cover from commutator and
loosen yoke set screws.

(3) With motor running, turn yoke clock-
wise until both relays close together —
matchmark yoke and motor.

(4) Continue to turn yoke clockwise until
one relay drops out — matchmark motor
opposite yoke mark.

(5) Continue to turn clockwise until both
relays again are closed.

(6) Turn yoke counter-clockwise from posi-
tion 5 until one relay drops out -
matchmark motor opposite yoke mark.

(7) Set yoke with set screws half way
between marks 5 and 6.

(8) Replace interlock pin on relays.

The mechanical rectifier may require cer-
tain adjustments which should be checked
before putting the equipment into opera-
tion. The stationary shoes of the rectifier are
adjusted by the threaded studs extending
through the brackets. The air gap between
the rotor tips and the stationary shoes
should be checked for an adjustment of
3/32" with proper thickness gauge and if
necessary, adjustment should be made. Care
should be used to see that all nuts and jam
nuts are properly tightened.

The phase relation of the rotating disc to
the synchronous motor is established before
shipment. If minor adjustment of this setting
becomes necessary it may be made by shift-
ing the hub one or two teeth at a time as
indicated in Figures 4460 and 7090. A move-
ment of one tooth at the hub is equivalent
to approximately %" along the edge of
the disc at the tip.

For half-wave rectification the relation of
rectifier discs, one to the other, should be as
shown in Figure 3850-L

If proper adjustment cannot be reached
due to the bolts interfering with the end
of the slots at the hub, it will be necessary
to remove the bolts and rotate the hub to
engage a new set of slots 120 degrees from
the one originally used. This will be found to
permit a new set of adjustments which will

provide proper setting within the range of
the slots.

The polarity indicator consists of a point
attached to the high tension Precipitator
lead set opposite a spherical segment
mounted on the motor (grounded). This gap
should be set so that when operating poten-
tial is applied to the Precipitator circuit no
arc will occur when the high tension circuit
is negative. The Automatic Polarity Control
performs this operation and prevents the
operation of the equipment on the wrong
polarity.

CAUTION

Be sure that the two transformer ter-
minals, connected to the rectifier, are
grounded before attempting any adjust-
ments on the rectifier, even though the high
tension lead to the Precipitator is grounded
and the transformer supply current is dis-
connected. Do not place the hands against
the rectifier rotor disc in order to slow it
down quickly.

GAS CONDITIONING

It is imperative that the temperature and
volume of gases entering the Precipitator be
within the ranges specified in the contract.
If not, proper adjustments of these values
should be made or the gases should be con-
ditioned accordingly before entering the
Precipitator.

PROCEDURE FOR OPERATION
(Figure 594 1 -L)

1 I ) Close main line disconnect switch.

(2) Turn both the transformer tap switch
"D" and the resistor tap switch "C" as
far as possible to the right (clockwise).
This cuts in all available grid resistance
and places the transformer on its lowest
voltage tap.

(3) Unlock safety lock switch "K."

(4) Start rectifier motor by pressing motor
start pushbutton "J."

(5) Close circuit-breaker by turning selec-
tor switch "L'

(6) Turn the switch "G" to place the signal
system in operation. The signal light will
now burn and the horn will sound when
the circuit-breaker is opened. If it is
desired to open the circuit-breaker
without stopping the rectifier, turn the
selector switch "L" to "OFF." Turn
switch "G" to "OFF" to take the signal
system out of operation.

(7) To shut down the whole electrical unit,
press the stop button "M."

(8) The transformer circuit-breaker is fitted
with an adjustable overload relay. Mov-
ing the thumb nut stop up causes the
relay to operate at a lower amperage.
It should be set to open the circuit at
100% full load current, as shown on the
transformer name plate. The switch-
board ammeter indicates at all times
the current passing through this circuit.

(9) The rectifier motor starter is equipped
with a thermal overload relay located
below the contacting fingers of the
starter inside its steel protecting box.

(10) To measure line voltage of the single
phase circuit supplying current to the
transformer, place the transformer tap
dial switch between any two of the
contacts and read the voltmeter.

INDICATIONS OF NORMAL AND
ABNORMAL OPERATION

All conditions within Precipitator units
are reflected in the voltage and amperage
of the primary side of the transformer.
Thus, these readings can be depended upon
to indicate when good electrical conditions
prevail. Operators should familiarize them-
selves with the voltage and amperage on all
the taps during normal operation. Opera-
tion should, however, be confined to the one
tap which gives most efficient recoveries.
This is covered in the test report made at
the time the installation is first operated.

The general conclusions to be drawn from
unusual meter readings are as follows:

AMMETER

(I) Gradual climbing of current reading
(extending over a day or more). This

would indicate an accumulation of dirt
on the insulators or a change in the
composition or temperature of the gas.

(2) Sudden rise of current. Short circuit
caused by broken or displaced dis-
charge electrodes, broken or dirty insu-
lators in Precipitator or high tension
line or failure of high tension cable,
wrong rectifier setting, failure of recti-
fier discs, or (least probable) short cir-
cuit in transformer.

(3) Decrease in current. Open circuit in
Precipitator or line. All Precipitators
are disconnected from electrical equip-
ment or open circuit in transformer.

(4) Swinging or regularly pulsating current
due to swinging of discharge electrodes
in Precipitator, or insulator leakage.

VOLTMETER

(1) The transformer voltage will in general
be found to be higher for abnormally
low currents and lower for abnormally
high currents.

(2) When a short circuit is indicated it can
be located by disconnecting Precipita-
tor units until the "short" is isolated in
a specific unit. If it still exists with all
units disconnected, then disconnect the
high tension line at the rectifier in the
substation and finally disconnect the
rectifier from the high tension trans-
former. Before doing this be certain
that the rectifier setting has been care-
fully adjusted.

The voltage at the high tension terminals
corresponding to a given low voltage read-
ing at the terminals of the transformer may
be obtained from a curve furnished by
Western Precipitation Corporation, or they
may be calculated from the transformer
ratio. The latter may be calculated from
the following formula:

"Actual high tension transformer voltage
equals measured low tension voltage times
the rated high tension voltage at the tap
used and divided by the rated low tension
voltage across the low tension winding."

CARE AND MAINTENANCE
Electrical Equipment:

The electrical equipment requires very
little attention but the points that are given
here should be attended to regularly in
order that the equipment may give the
maximum of service.

A responsible operator should be assigned
to periodically visit the substation at regular
intervals, preferably hourly, to observe elec-
trical conditions and thereby determine if
the operation is normal.

The bakelite parts of the rectifier should
be carefully cleaned every day with clean
cloths. Do not use oil, paint, or varnish on
the bakelite parts. If clean cloths will not
remove all foreign substances, a cloth damp-
ened with alcohol, carbon tetrachloride,
gasoline or ammonia may be used, followed
by a thorough wiping with a dry cloth. This
is very important as a very small amount of
dirt on the bakelite parts will cause arcing
across them with resultant burning, necessi-
tating their replacement.

The spare rectifier should be cleaned while
the other one is operating, when there is
more than one.

The space between the copper tips of the
rotor arm of the rectifier and the shoes
should be checked regularly.

Clean the switchboard every week.

The rectifier motor bearings should be
repacked every year. (Figure 5567)

Inspect the oil level in the transformer
every month and if found low fill the tanks
to the level of mark on the gauge with
proper oil. For Westinghouse E. & M. Co.
transformers use their Wemco "C" Oil.
For General Electric Co. transformers use
their No. 1 0 Transil Oil. For American Trans-
former Co. transformers use their precipita-
tion transformer oil.

At least once a year send a sample of
transformer oil to Western Precipitation
Corporation, Los Angeles, California to be
tested for breakdown voltage. This sample
should be taken about 4" from the bottom
of the tank using a glass tube and rubber
siphon. Allow enough oil to flow to clean

the tube and hose before collecting a ten
ounce sample. IT IS VERY IMPORTANT
THAT THE SAMPLING EQUIPMENT AND
CONTAINING BOTTLE BE ABSOLUTELY
CLEAN AND MOISTURE-FREE. A data
sheet must be sent in with each sample,
listing:

1 . Customer's name

2. Plant location

3. Transformer manufacturer

4. Transformer serial number

5. Rating KVA, Cycles

...I.T. Voltage H.T. Voltage

6. Sample taken inches from bottom

of tank

7. Date sample taken

8. To whom report is to be mailed.

Clean all porcelain insulators in the sub-
station and the high tension switch insula-
tors, including the high tension terminals of
the transformer and line cables, every month
or oftener if the opportunity presents itself
due to plant shutdown or other reasons.

Heating and Ventilating of Substation:

(1) The substation must be heated to pre-
vent condensation of moisture on the
rectifier but the room temperature
should at no time exceed 100° F. to
insure safe operating temperatures for
the electrical equipment.

(2) The building should also be ventilated
to prevent the excessive formation of
nitrous oxide fumes due to breaking
down of the atmosphere by the recti-
fier arc. These fumes are very injurious
when inhaled in appreciable quantities.
The heating coils in the substation,
usually steam, should be kept warm
during the winter months and during
periods of high humidity. The ventilat-
ing fan should be operated and the
room kept closed at all times.

RAPPER CONTROL

(I) The collecting electrode rappers are
motor driven and the discharge elec-
trode rappers are operated by vibra-

tors through Solenoid valves. All
rappers are controlled by automatic
tinners in the substation, as shown on
Figure 3814-L The cycle timer controls
the rapping frequency and the pro-
gram timer governs the duration of
rapping. The cycles and time schedules
for all timers are charted on Figure
4603-B.

(2) The circuit and operation of both
timers are self-explanatory as shown on
Figure 4603-B. Closing of the circuit
breaker starts the cycle timer which in
turn energizes the program timer —
provided all selector switches are on
"Automatic."

(3) Essential adjustments are as follows:

(a) The cycle can be changed by re-
arranging the gears supplied with
the cycle timer.

(b) The length of contact on any
timer may be reduced by loosen-
ing the cam set screws and adjust-
ing the cam to suit. The cams are
adjusted for 10 second intervals
when the equipment is installed.

Collecting Electrode Rappers

(4) Any rappei may be cut out of the
automatic cycle by the "Isolating
Switch" located at the rapper motor.
If it is- desired to operate one of the
rappers, "out of cycle," the selector
switch should be placed in the "Hand"
position and the pushbutton for that
rapper motor depressed. All other
rapper motors will be out of the circuit
until the selector switch is changed to
"Automatic" position, at which time
operation will again become automatic
and will be controlled by the timers.

Discharge Electrode Rappers

(5) Each vibrator requires 42 cu. ft. per
minute of free air at 80 pounds per
sq. in. After Precipitator is put into
operation the air pressure should be
regulated as low as possible, consistent
with good high tension frame cleaning.
The air flow indicator is located ad-
jacent to the rapper control panel.

(6) Each vibrator is individually controlled
by two pushbuttons, either of which will
operate the vibrator. One set of push-
buttons is located on the rapper con-
trol panel in the substation and one set
near the Solenoid air valves outside the
substation. In order to operate these
by the pushbuttons, it is necessary to
place either selector switch (one on
the rapper control panel or one by the
Solenoid valves) on the "Hand" po-
sition. Return to the "Automatic"
position restores timer control.

Lubrication of rapper mechanism is
charted in Figure 3817-C.

The balance of the equipment not specif-
ically covered in these instructions should
be inspected frequently and kept in first-
class working condition. Failure of any one
part may seriously affect the efficiency of
the entire installation..

RECOMMENDED SPARE PARTS

3 A-5848-D— Stator Discs, '/211 Bakelite

26" square

4 A-5849-D— Rectifier Shoe Brackets
3 I -5483-C— Rectifier Shoe Brackets
30 A-5850-D— Rectifier Shoes

2 A-5852-D— Polarity Indicator Brackets
2 A-5853-D— Polarity Indicators

2 I-20I8-L — Radio Interference Corrector

Supports

3 A-6886-C— Rotor Discs
64 B-585I-D— Rectifier Tips
2 3-5480-A— Rectifier Hubs
2 4-5480-A— Tooth Rings

2 5-5480-A— Flanges
2 D-6503-A — Rotor Clamping Rings
I | -5482-B— Rectifier Motor 440 Volt, 60
Cycle, 3 Phase

4 Rectifier Motor Bearings

I Voltmeter, Weston No. 642 0-500
I Ammeter, Weston No. 642 0-75
4 440 Volt, 60 Cycle Coil for G.E. Mag.
Starter CR-7006-D5I

8 Sets Heaters G.E. 8 I D246

2 Magnetic Overload Relays, G.E. No.

I2PACI2A5 Bellows Type 5 Amp. Coil

Manual Reset

I G.E. Transformer 75/5 Amp.
4 440 Volt, 60 Cycle Coils for G.E. Mag.

Reversing Contactor CR-7009-BI8C

1 Set G.E. Grid Resistors, consisting of 3

boxes CR-3239-SG K-5720140 Total
Resistance 5.04 Ohms 25 KVA 440
Volt

4 440 Volt, 60 Cycle Coils for G. E. Relay
CR-281 I-CI9E

16 I Amp-250 Volt Glass Fuses

2 No. 601 CHR Kirkland Bulls-l-Units
8 G.E. Mazda S-6 Lamps, 120 Volts
1015 Amp. 600 Volt Fuses

10 60 Amp. 600 Volt Fuses

I G.E. Cottrell Transformer 25 KVA

440/75000 Volts
10 A-4365-B — Special Insulators Lapp

No. 6060

I A-5922-D— Rotor Insulator Cap
I B-5498-D— Rotor Post Flange

1 1-2386-L— Rotor Shaft Bearing Com-

plete with Inserts

2 l-2378-LI — Indicating Handles

2 I -2394-L— Switch Jaws
4 A-464 1 -D— Switch Jaws

I A-5920-D — Stationary Insulator Cap
6 A-548 1 -D— Switch Springs

3 Sets Heaters, Square D No. B 1.88 for

Combination Starter Class 8538
QRG2A

4 A-I0447-D— H. T. Cable Terminals

complete

4 D- 1 38 1 7-D— Flexible H. T. Connectors
4 I -5532-A— Bushings, Lapp Cat. No.

20498
6 A-8624-L — Radio Interference Correc-

tors, Plain type 1500 M.A.
4 A-8626-L — Radio Interference Correc-

tors, Absorb, tpye 1500

M.A.
8 B- 1 0442-D— Cartons Air Mat Sheets

(100 in Carton) 6 Ply Type

B, Treated, American Air

Filter Co., Louisville, Ky.-

PRECIPITATOR

4 R-I3646-L2— Fused Silica Tubes

4 R-I3646-L3 — Porcelain Flanges, Locke

No. 9623

4 R-I3646-L5— Clips
8 Support Insulators, Locke No. 23070
8 R-4258-D2— Base Tiles
4 R-5539-L2— Cover Tiles
4 R-5539-LI— Cover Tiles
8 R-I3557-D2— Base Tiles
4 R-5539-L3— Cover Tiles
4 R-I3557-D3— Cover Tiles
2 R-I3533-D3— Knife Edge Bearings
6 5/8" "MARSDEN" Std. Heavy Cad.

Plated Nuts

12 R-I2005-D2— Steel Leaves
6 R-I2005-DI— Hammer Handles
I R-I3556-LI— Tail Bearing Cradle
I R-9866-C3— Housing
6 Alemite Fittings, Giant B.H. No. 1823,

l/V' P.T.
6 7/16" '"MARSDEN" Std. Hvy. Cad.

Piated Nuts

I R- 1 3545-C2— Stuffing Box
I R- 1 3545-C3— Stuffing Box Nut
6 l/2" "MARSDEN" Std. Hvy. Cad. Pit.

Nuts
6 3/8" "MARSDEN" Std. Hvy. Cad. Pit.

Nuts
6 3/4" "MARSDEN" Std. Hvy. Cad. Pit.

Nuts
6 %" "MARSDEN" Std. Hvy. Cad. Pit.

Nuts
6 5/8 " Elastic Stop Nuts No. 29-U-IOI

Cad. Pit.
6 l/2" Elastic Stop Nuts No. 29-U-083

Cad. Pit.
6 R-7709-LI— Rod Ends, Billings & Spencer

No. 10 or Equal
I Isolating Switch, Appleton No. 17610

Type CBU Series SW-18
25 R-6304-LI— C. I. Weights (Pat. R.C.

540)

I R- 1 3585-L200— Vibrator
20 Drive Screws, Pk Type U, No. 8 x %" Lg.
I R-I37I8-B2— Steel Casting (Pat. R.C.

685)
8 110 Volt, 60 Cycle Coil for Sq. D Starter

Class 8536-RO- 10
1 6 Sets Heaters, Square D No. B 1.88

CZ3.

GRID
RESISTOR

VOLTMETER

MAM

A

AMMETER
"B"

RESISTOR
TAP SWITCH
V

TRANSFORMER
TAPSWITCH
"D

STOPV
START V
TRANS.
SWITCH V

MAGNETIC
STARTER

SIGNAL "E"

SIGNAL
RELAY

SIGNAL SW.

"6" , CURRENT
LOCK SW.V TRANS.

AUTOMATIC
POLARITY -i
NAMEPLATE CONTROL

OVERLOAD
RELAY "R"

REVERSING-
CONTACTOR

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RESISTOR
TAP SWITCH

TRANSFORMER
TAP SWITCH

MAIN
TRANSFORMER

MS -MAIN DISCONNECT

SO -SIGNAL DISCONNECT

SWD- SWITCHBOARD DISCONNECT

SR -SIGNAL RELAY

RS -RECTIFIER STARTER

RSR-RECTIFIER STARTER

OVERLOAD RELAY
TS -TRANSFORMER SELECTOR

SWITCH

LS -LOCK SWITCH
APC-fUTOK ATIC POLARITY CONTROL
TC -TRANSFORMER REVERSING CONTACTOR
OR -OVERLOAD RELAY
RES-RESISTOR
REC-RECTOX
A -AMMETER
V -VOLTMETER
RIC -RADIO INTERFERENCE CORRECTOR

H.T LINE TO PRECIPITATOR

FIG. 5494

14

15

STANDARD RECTIFIER
CLUTCH TYPE ROTOR HUB

17

M.T LINES TO PRECIPITATOR

— RECTIFIER
SHOE

GROUND

HALF WAVE RECTIFIER
CONNECTION a ALIGNMENT

FIGURE 3850

STATIONARY
SHOE

CORRECT SETTING

WRONG SETTING

MOVE ROTARY DISK WITH
REFERENCE TO MOTOR
SHAFT THUS.

CORRECT SETTING

WRONG SETTING

NOTE-

MOVE ROTARY DISK WITH
REFERENCE TO MOTOR
SHAFT THUS.

WRONG SETTING

ZERO POINT OF AC WAVE NEAR
CENTER OF STATIONARY SHOE.
TO GET APPROXIMATELY CORRECT
RECTIFIER SETTING, MOVE ROTARY
DISK 45° ABOUT MOTOR SHAFT IN
EITHER DIRECTION

FIGURE 4460

OZITE COMPOUND (/GAL.)
PORCELAIN INSULATOR

5TIFFENZR ROD

CEMENTING RING

C.T. SUPPORT FLANGE
A GASKET "OR" RUBBER
BRASS PIPE. PLUG
(TAPE.} STRESS
SHIELDING BRAID

BRASS BELL AND STUFFING Box

C.L ARMOR

FIG. 10447-D

19

REMOVE FOUR CAP SCREWS
HOLDING END BELL.

PULL ROTOR ASSEMBLY
3J OUT OF STATOR AND
PLACE IN VISE-

5) REMOVE ROTOR (7) REMOVE THREE CAP SCREWS 8

DISC ASSEMBLY - ^ E*D BELL FROM BEARING CAP.
FROM SHAFT.

REMOVE THREE CAP
2J SCREWS HOLDING END
BELL TO BEARING CAR

REMOVE THREE SET
SCREWS FROM HUB.

REMOVE FOUR CAP
SCREWS a STATOR DISC.

METHOD OF REMOVING ROTOR
TO GREASE MOTOR

NOTE-

AFTER THE ROTOR HAS BEEN DISASSEMBLED CLEAN ALL OLD GREASE OUT
OF BEARINGS AND BEARING CAPS. USE CARBON TETRACHLORIDE OR A GOOD
WHITE GASOLINE. BLOW OFF EXCESS CLEANING FLUID WITH AIR HOSE.
REASSEMBLE MOTOR PACKING BEARINGS WITH NOT MORE THAN ONE OUNCE
OF BALL BEARING GREASE PER BEARING. THIS OPERATION SHOULD BE DONE
ONCE A YEAR.

DO NOT GREASE MOTOR TOO MUCH.

FIG. 5567

20

RAPPER CONTROL CABINET

FRONT

(7) - MAGNETIC STARTER
(z) - CIRCUIT BREAKER
(l - PROGRAM TIMERS
4 - CYCLE TIMER

5 - TERMINAL STRIPS
(B - PUSH BUTTONS
(?) - SELECTOR SWITCHES

FIG. 3814

DOORS REMOVED

22

23

WARNING- ADJUST

LUBRICATOR TO MINIMUM
FEED -TO PREVENT EXCESSIVE
OIL SPRAY IN EXHAUST.

AIR VIBRATOR
RAPPER UNIT

\ I"'.

v-kj>

LUBRICATOR

PRECIPITATOR

KNIFE-EDGE BEARING
NO LUBRICATION

=_-f " n >1~.n.1.~Pz.'

T ~

— ji
H

F '
i i'

i

ii

i i>

n

n

I

H

n

Ii

ii
,i

PLATE RAPPER

BEARING

SAE-IO MOTOR OIL

RENEW OIL WHEN INDICATOR ROD
VIBRATES.

AIR FLOW INDICATOR -LOCATED
AT RAPPER CONTROL PANEL IN
SUBSTATION^ , ,

i LJJ I — •

AIR SUPPLY

SAE-20 (SAE-IO FOR WINTER USE
IN COLD CLIMATES) -

THIS GIVES AUTOMATIC LUBRICATION ONLY
DURING VIBRATOR OPERATION. DRIP IS
ADJUSTABLE.

SAE-90 GEAR LUBRICANT (SAE-80
FOR WINTER USE IN COLD CLIMATES)

KEEP GEAR CASE FILLED TO OIL FILL HOLE.
CHANGE OIL TWICE YEARLY.

MOTOR BALL BEARING GREASE.

REPLACE TWICE YEARLY. TO REFILL,
REMOVE BOTH FILL AND DRAIN PLUGS,
FORCING GREASE IN AND EXPELLING USED
GREASE. RUN MOTOR A FEW MINUTES
BEFORE REPLACING DRAIN PLUG.

AUTOMOBILE CHASSIS GREASE.

LUBRICATE WITH PRESSURE GUN ONCE A
MONTH OR OFTENER, REMOVING THE SHAFT
BEARING DRAIN PLUG TO EXPELL USED
GREASE.

BEARINGS

NOTE-
ALL LUBRICANTS MUST BE OF
FIRST QUALITY AS MARKETED
BY A REPUTABLE OIL COMPANY.

FIG. 3817

24

PAMPHLET BINDER

Manufacluttd by

\ 6 AYLORD BROS. Inc. 1

Syracuse, N. Y.

Stockton, CM.

M283865

TH -7t,c<

LUb.

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