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ENGIN. LIBRARY

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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

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LUBRICATOR

PRECIPITATOR

KNIFE-EDGE BEARING NO LUBRICATION

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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.

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THE UNIVERSITY OF CALIFORNIA LIBRARY

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