Zenith ZTSDH Series User manual

••
43R-50018
Revised March. 1996
\-
( J721zENITHI
-
CONTROLS, INC.
OPERATION AND
MAINTENANCE
MANUAL
AUTOMATIC
TRANSFER
SWITCH -
DELAYED
TRANSITION
(Mechanically Held)
ZTSDH SERIES
1600 THRU 3000.AMPS
...
MODEL NUMBER ~~--~----------~1
<;ERIAL NUMBERI .__ --------------~1
ZENITH CONTROLS. INC... 830 W-. 40th St.. Chicago. IL 60609
[phone]: FAX. {~12)247....:7805
. -

A. POWER PANEL
31
L
410£R
4C~C9
~
2091!
3061!
32 30~~
EL ~
307R
B. CONTROL PANEL
TORQUE REQUIREMENTS FOR ELECTRICAL CONNECTIONS TORQUE.REQUIREMENTS
FOR
FIE"LD CONNECTIONS
All current carrying parts use compression washers and should be
torqued to the values presented below. Caution: DO NOT OVER-
lORQUE WASHERS; follow the given torque values.
Torque Requirements (inch-lb. except denoted by + are ft.-lb.)
Compression
Bolt Socket Set Washers
Size
Grade_5
Head Screw 1 2
%-20
75 120 52 60 67
o/,6- 16 157 225 105 159
170
%-16
[phone] +23 +26
%-13
+57 1030
366
+56 +59
Lug Bolting Torque
Bolt Dia (in.) Torque (ft
.
-lb)
Wire Connection
Tightening Torque
Wire Cond.
Screw Driver
Size Torque
AWGorMM
· (inc::h-lb.)
%or Jess
6
o/,s
11
·%
19
7,1,6 30
%·
40
5
,4 or more 55
~ NOTICE
TIGHTENING TORQUES
FOR FIELD WIRING
TERMINALS
Socket Size
Across Flats,
Inch
Tightening
Torque
Pound-Inches
Ya
45
%2
100
3j,6
120
7
/32
150
% 200
s;,s
275
% 375
1h
500
9j,6
600
18-16 AWG 19
14-8
19
6-4
36.
1

PARTS LIST
IMPORTANT: Model number and serial number d switch must be included w~ oil orders for replacement parts. If possible,
also specify line vologes. drawing number ond dote d installation. When ordering mechanical ports not. shown on the ports list. circle
the part on the photograph ond return with the ports list. When ordering electricol components not shown on the ports list. refer
to this port by its I~ description in the wiring diagram.
A. POWER PANEL PARTS
'
PART NUMBER BY AMPERAGE
T
TAG
DESCRIPTION
E 1600 2000
3000
..
NL,1,2,3
S-1126F (2}
S-1126F (2)
S-1126F (2)
1 EL1,2,3 Coble Connections at Rear Optional Optional Optional
T1.2.3
(8) 600 MCt.C-2 (8) 600 MCt.C-2
(8} 600 t.CCU-2
2 Stationary Contact Assembly Kit
23P-1594 23P-1594
23P-1434Z
3 Arc Grid Assembly Kil
ZJP-1171 23P-1171 23P-1171
4 Moveable Contact Assembly Kit
23P-1400 23P-1400
23P-1344
5 ~/CNO,CEO/a
Main ATS Operating Coils
Voltage Systems
No Vots
Ph Wire Coil Volts Poles
-1 120 t 2
120
2 SPO
SPO
SPO
120/240
2
K-2151 K-2151
K-2151
-2
1 J
240
J
K-2151 K-2151 K-2151
-3
240 3 J 24{) J
K-2151 K-2151 K-2151
-.c. 120/208 3
.c.
208 3.4
K-2151 K-2151 K-2151
-s
480 3 J
480
J
K-2160
K-2160
K-2160
-6
575
3 J 575/600 J
K-2195 K-2195
K-2195
zn/480 J
K-2160 K-2160 K-2160
-7
3 4
480
4
K-2160 K-2160
K-2160
-8
120/240 2 4 2.C.O
4
K-2151 K-2151 K-2151
-9
240/416 J
.c. 416 J
K-2193 K-2193
K-2193
OPERAllNG COIL HARDWARE KIT
••
6 SN/SNO
CN eut-OU. Switch 23P-1401
7 SE/SEO
CE ru-out Switch 23P-1401
8 AJ Emergency Position
AI.Jx. Contact
(OTY 1) ZJP-1404 (OTY 2) 23P-1405
9 M Normal Postion
AI.Jx. Contoct (OTY 1) 23P-1402 ~(OTY 2) 23P-1403
10 OS
Oisconned Switch Operator L-4009, Contact Block L-1020
11
RN,RE,RNO,REO
Rectifier
23P-147J (24-0V), 2JP-1582 (600\1)
Nomepl~ (Not Shown)
Cortains switch irtormotion: voltage, amperage, frequency rating, number d
phases, seriul number, system voltuge und model number.
CABINET DOOR
TAG
OESmiPTION
PART NUMBER
Lt
l2
ATS Emergency · Poslion lndicc:tor
ATS Normal Position lndic<Jtor
Green lens (N()I"I11al)
Red Lens (Emergency)
Bulb
Socket
Normal/ Emergency Namepkte
Emergency Bulb
Normal Bub
PS-5048
PS-5047
PS-5046
V-1502
..
PS-5105
PS-5105
TS
Test Switch
Operator. Momentoly
eormct Block N.C.
NomePI<Jbe
Cormct Mounting BQse
L-1025
L-1029
v..:1so3
PS-3473
43R-5001
REV 03/96
2

0. ATS CONTROL PANEL (SSRCP) CHART 1·
(TO
POWER PAt.E:L
... c.
..........
--
-
-
:SNII£
.IUMI'OIS
~CAlC
·-
Bl rn;
ti!J
.!::-'
0
AA
~
.IUM,.(RS IS£[ CH&ItT I I
·::::11:1:1
Jl .12 J3 .k .1:1 Jo; .1'7 .Ia J• JIO .Ill
JJ ~~~~rT~-rr.tl-~rTIIw-~
Jumper
Connects
Points Remove When
Accessories Used
J1 23,23A 81
J2 23A,238 82
J3
238,23C
83
J4
23C, 23Z JIN, TS, C/D
JS 23Z,27
T, YN
J6
25, 25Z T3, R4
J7 28,
28Z Sl, C, C/0
JS
28Z, 29
PI & U
jg
33A, 33Y
ER1,2,3,J1E
J10 33Z,37 w
J11
35,35Z R4, W3
ATS CONTROL-PANEL (SSRCP) STANDARD ITEMS
TAG
XN,XE
DESCRIPTION
Control Transformers
(See Note 1)
VOLTAGE 50/60 HZ
120V
208V
240
or 480V
..
PART NO.
K-3068
K-3070
K-3071
416V K-3089
B-1, 2, 3 Phase Relays
120V
K-1185
Solid State 208
or 240V I K-1186
(See Note 1) 480V K-1188
VFSM
Voltage Frequency Sensor
120V/60Hz
K-1192R
CR Control Relay 120V K-1204
RT Bypass T Relay 120V K-1204
J1.J11 Jumpers PS-5067
.ccN,CCEO
Power Relays, energize
CN & CEO Solenoids
120V K-1120
Cc:E,CCNO
Power Relays, energize
CE & CNO Solenoids .
120V
K-1120
(OPTIONAL ITEMS)
...
TAG
DESCRIPTION VOLTAGE PART NUMBER
T
Time Delay to Normal. Timer Solid State 120V
.1 Sec. to 9990 Hrs. (Adj.) OSA·A·T
u Engine Cool Down.
Timer Solid State 120V
.1 Sec. to 9990 Hrs. (Adj.) . OSA·A·U
w Time Delay Emergency,
Timer Solid State 120V
.1 Sec. to 9990 Hrs. (Adj.) OSA·A·W
PI · •
Time Delay Engine Start. Timer 120V(.5 to 6 sec. Adjustable) K-1201
P2
Optional (Mounted below SSRCP) . 120V (300 Sec. Adjustable) K-1061
Notes:
1.
If -6 voltage system (5751600V) is supplied, then XN, XE i:; K-3087 and B1.2. 3 is K-1185 (120V) supplied with XB
(575;600V/120V) 3 phase transformer assembly. B1, 2. 3 mounted below SSRCP.
2/95

Solid State Time Delay
Accessories T, U, W Solid State Timers Adjustable in
Seconds, Minutes and Hours (Plug-In Style}.
To select a time unit, operate the pushbuttons
of the rightmost
thumbwheel switch until the desired time unit is shown in win-
dow. The time unit can be selected by pushing the plus (
+) bot-
tom button orthe minus(-} top button. The desired time is specified
by operating the three thumbwheel switches in the middle of the
front panel.
Close Differential (ARSM) Relay Adjustment
The voltage points at which the relay operates are adjustable.
When the relay pulls in, an audible click is noticeable, and the
LED will come on.
Setting the Relay:
If the relayshould be set with a variable voltage supply(Variac):
1.
Turn pick-up control fully clockwise.
2.
Turn drop-out control fully counterclockwise.
3.
Set Variac pick-up voltage to desired level.
4.
Very slowly rotate pick-up adjustment counterclockwise until
relay picks up. (LED will energize}.··
5.
Set Variac drop-out voltage to desired level.
6.
Very slowly rotate drop-out adjustment clockwise until relay
drops out (LED de-energizes). ,
Verify settings
by raising voltage until relay picks up, then lower
voltage until relay drops out, making sure that relay operates at
desired voltage levels.
ez!ZENITH}
a., ....., ••c.
CtNC ........
•ucar.ue .. -oca
'ICI..T.lC(
- -;.~:,~si
,. t
--
..
6
..
II
TUCI'II'l'T
~0
s:;::.,:c~~u• .. =
g_.. .......... ,,
l.,..,,to~ac
-v-.x l40••c
.... __ ..,
VOLTAGE/FREQUENCY SENSOR (VFSM) ADJUSTMENT
The pickuppointmaybe adjusted between 80-95% ofrated voltage
by rotating the offset screw located on the back of the relay.
Counter-clockwise rotation increases pickup voltage. Clockwise
rotation decreases pickup voltage.
I
\
·t
~
~
INCREASC:
0
PIC:< UP
8
4

-2
Tl, 2,3,TN LO~
N'_f.2,3,NN NORMAL SOURCE
EL I, 2,3 ,EN EMERGUICY -~URCE
_,
lEGEND •
2 2
2 ~ /c 3r ~ W!F.£ CONNC::ilCN
-JO
-II
-:12
-13
-14
-1:1
-16
-17
-18
-19
-2~
-c:.
-·
-22
-·23
-24
-23
-26· .
-7
~·· i,
-2.
-29
-:; 30
-31.
-.32
-:33 ..
-34
-33
...:·36
-"37
-38
-39
-40
-41
-42
-·ot3
-3
_(
\
-~
-6
-7
-8
-9
MECHANICALLY ACTUATED
NoRMAl.
POSITION
CONTACTS •
r.----,
·IA4 'l I
I~ I
1 : o I
·~·
1 : o I
•
...._.1
!(t-~o·~
23
Ol . ~ -WI.R£ CtU.WN TE.'i-
21 @;:: JJ Mltl.:.t_ E~Cl<
-~----<~ yoo-------~---:--§j "i"- WIRE C~l OISCCN.-.:ErT
20 I I~ 30 I . .;;. ~~.:t.ACCES!ORI~S
g:D~o-- ..... -_-_--,;.-T-1__;:;;.;:;.._-a....,..,__, /~ ___ j_j_ . === C] lF -""
@-----4f MECHA.'IICALLY ACTUATED
VOLTAGE RELAYS
,27
XC:--.
a.ERGENC't CONTf;OL
TRANSFORIAER
EMERGENCY POSITiml
CONTACTS.
(/.3-;i
I • I
I ~ I
I : I
.I o,;.._o I
1 "fb- I
L • ..,.. :_ _ _,~E.
S~"'.;)t
CH·- SOLENOID CPIL. Ti'.:.NSFC:RS ATS
fROM NEUTRAL TO .. "ORM. POSITION.
CE- Slll~NOIO COIL , TRANSFERS #.TS
fROM N(UTR:. L TO E!o!ER. POSir.CN.
CNO-SOLENOIO COIL, TRANSfERS ATS
• fROM NORMAL TO NEUTRAL
POSilON
Cf:O-SOL(NOtO CCIL, TR-"SSF::RS loTS
FJ'IOM EMERG. TO NEUTR#.L PCSITlQII.
RN - CN RECTIFIER
10£ -CE RECTIFIER
• RtiO -CNO RECTifiER
REO• CEO RECTII'IER
Bl 82 83 TS CR
-44
-4:1
-46
-47
-48
-!"9
-·3_0
~~ lr-~~~~-~----~--~~~ ..
~---~~23~A---~-~2~38~---2~3C 23Z
27
Jl J2 J3 ~
28 28Z
~
J7
29
.------- DT
24 CR 25 2:z ;sEo N.o.l r.s.~r r-c
L--o---111· ---c.o,___;go;»~~i'""c~" ~ CCN
.16 : o-!-<- CE
L-----~ 25A
SEE NOTE
VFSM 3A 33Y
..
T- TIME DELAY ON RETRANSFER, 28
CR- CONTROl.. RELAY,~7,33,39,43
'I'N- 'puSH SUTTON TO BYPASS T.
L ~- NORMAL POSITON LIGHT
U- ENGINE OVER-RUN TIMER,34
PI -tO.USTASlE
TIME OCLAY TO EfiGNE
I START, 35, 55
SH MECH.AHICA.U.Y AC'Il1ATED COIITACl'S)
SE0 001U'.AL POOITION) •
OT- TIME DELAY IN NEUT. TO NORMAL,33
CCN • POWER
REL~Y, EtiEP.GIZES
-
SOLENOIO CN, 11
CCED-FOWER RELAY, Et.ERGIZES SClDJCIC
CEO,I5
VFSM-
EMER. VOLTAGE Fi'!EOUENCV
SENSITIVE RELAY, 43
W - TtME CEl.AY 10EMER. TP.ANSFER, 44
RT- BYPASS T CONT.lCT IF EMERGENCY
F.liU>, 29,45,47,50
SH
SlO
ME<EAHICA.U.Y ACl'UATED COl<TACl'S
(EMERGENCY POSITION)
Ll - E!~En POSITION LIGHT
OW· TIME CEL.lY_ lt.l tJE!JT. TO £~JE."!~50
CC£- POWER R£l.AY, ENERGIZES
SOLENOID CE, 16
CCNO- PO'NfR RELAY, f;NERGIZES
SOLENOIO Cf.:O,I3
EHG.START CCHT:.cT
Fr!OM PI
rlll
• 12. !V. 13
---- ...... ""''"'''"~o o,.,._,r,

-1
0 5"2.
-2
-4 so
-5
:-:6
~7
8
9
10
11
'c-1.2
. '----:-{---' )~~-"1'---i
~13
i_14
NOTE:
23
24
ATI! 12.
J---+-__j_,}f------:r:~-~-=-=-=-=-=-=-,::--t------o-(f--\LIT}---~f'---t
IDS I
~-4~-------4~~.~
.,.,.
LNA~ Normal La~p Available
LEA- Emergency Lamp Available
RNH- Relay Normal Hold
3,27,29
AA-1,2,3- Auto Limit Switch
6, 8, 1+
BR-1,2,3- Bridge Rectifier
CBN- Normal Solenoid
8
CBE-.;Emerc;rency Solenoid
9
AI-1,2-3,Isolate Limit Switch
10,22,\4 .
ATR- Auto/Test Relay
11,17:
LIT- Lamp Inhibit Transfer
11
LDS- Lamp Disconnect switch
"INHIBIT" position . 13
CBC- Crank Solenoid. 14
AT-1,2- Test Limit Switch
~18,23 .
~BE- Lamp Bypass Emergenc~l9
LBN- Lamp Bypass Normal. 20
LAI---c-Lamp ATS Isolate. 22 ·
LAT/TEST- Lamp
Ats Test pos~23
AUTO- Lamp ATS Auto pos. 25
AB4-1,2- Bypass Normal
8,18
AB3-1,2 3 4- Bypass Emergency
9,17,1 1, 29
WIRE NUMBER E12 BECOMES WIRE NUMBER 12 AFTER
THE TEST PLUG (TP).
600 -Jz.·ao AMP (ATS) BYPASS WI SSRCP
31

-1
-2
-3
-4
-5
-6
-7
-8
-9
-11
-12
-13
-14.
-)5
-16
-17
-18
-19
-20
-21
b-·zz
-23
-24
-25
_26
-27
-28
-29
-30
-31
-32
-33
-34
-35
-3S
-37
-38
-39
-40
-43
NLI,2,J AND NN NORHAL
EL1,2,3 AND EMERGENCY
SOURCE CABLE CONNECTIONS
SOURCE CABLE CONNECTION
NLI
20
UiiD-
TJ,2,3 liND TN
LORD CABLE
CONNECTIONS
~
t!J
MECHANICALLY
ACTUATED
NORMAL
POSITION.
CONTACT IONS
IF REQUIRED
21
T1 :
'(j .1 I
-·- -·-GI
IJ]J. -o- ~:
OS
I I
I I
I I
OS-DISCONNECT SHITCH FOR SERVICE
CN-TRRNSFER TO NORMAL SOLENOID
CE-TRANSFER TO EMERGENCY SOLENOID
UNDER
Ll
5 480 3 3
0
-- EMERGENCY CONTROL
XE TRANSFORMER .
3 7
27U480 3
CON
4
Vo-
31
30
32
L
VOLTAGE RELAYS.
28 28Z
~
J7
J6
33
Jll
SEE NOTE
NEUTRAL IF REQUIRED
•
•
w
MECHANICALLY
ACTUATED
EMERGENCY
POSITION
CONTACTIONS
NO. OF
NO. OF
VOLTS 160HZI
PHASES HIRES
..
3
120,240
3
120,208
·4
3
9
.240,416
3 •
I- T liE lELA! 011 RETRAIISFER 28
CR-CGIITRIL.RELAT ,z7.32,36.39
TN -PUSH IUTION TO BYPASS
l2- IOIIRL USIIIOI. llUI
U - UIIIE "fR-RQI I UfR ,33
PI-IU[ IEUI 10 U&JI[ SIIRI,34,36
$1- IECIII!Cilll ICIURIU COIIICI
CCI-PUER R(LIJ. EIERIIZES IRUSF£1
U IIRIIL SGLEIGID , 11
HSI-UEUUU YDLII&[ liD FI[IIUCT
SUS Ill RELIT .39
I - TilE IEUT II IRUSFER IUERIUCTi,40
Rl- ITPI$$ I UlliCI UP .. EIUIUCJ fllLQR£
29.4!.44
SE -I£0WUcN..J.. Y ACTUATED CONTZIICTS
Ll_ EMERGEJ«:Y POSIT lilt LICHT
CCE.:... POIIEA RELAY • ENERGIZES TRANSFER
TO EHEACEN:Y so.ENOID
·- . ' (
NOTEz
LOCATED ON MER PANEL
21
4

OPERATION OF AUTOMATIC TRANSFER SWITCH
OPERATION:
When the normal line (NL) falls to the preset dropout point, or if any normal
( phase
fails, the nhase.relay(s) (adjustable) will drop out disconnecting the
CR and signaling the generator to· start.
~en emergency line (EL) voltage and frequency reach at least 90% of rated value,
tbe VFSM relay is energized. The RT relay is now energized to operate the CCNO
relay through the CNO cutout switch causing the main transfer coil CNO to operate.
The load is now transferred to the OPEN position. The SNO limit switch operates
to disconnect the CCNO relay and CNO transfer coil. The transfer switch is now
locked mechanically open. SNO is now activated. This energizes the DW timer.
After time setting has lapsed, DW will energize CCE, which will ener~ize main
transfer coil CE. The load is now transferred to the emergency line supply.
The SE limit switch operates to disconnect the CCE relay and CE main transfer
coil. The transfer switch is now locked mechanically in Emer~ency position.
When tbe normal line voltage restores to the preset value, the phase relay(s)
(B1,2,3) operate to energize the normal restoration timer T. After the time
setting has lapsed, the timer contact closes to energize CR relay. The CCEO
relay is now energized through the SN and SEO limit switches, causing the main
transfer coil ·cEO to operate. The load is now transferred back to OPEN position.
The SEO limit switch operates to disconnect the CCEO relay and CEO transfer coil.
The transfer switch is now locked mechanically open. SEO is ~ow activated,
energizing DT timer. After time setting has lapsed, DT will energize CCN which
will energize main transfer coil CN. The load is now transferred to the norma.l
line supp1.y. The SN limit switch operates to disconnect the CCN relay and CN
main transfer coil. The transfer switch is now locked·into normal position.
INSPECTION
CONTACTS- The movable and stationa~ contacts are a vital part"~f the ATS and
must be kept clean. To inspect the ATS contacts, disconnect all power sources.
Examine the contacts.
Any surface deposits must be removed with a clean cloth (DO N6T USE EMERY CLOTH
OR A FILE).
After the movable and stationary contacts are wiped clean (no discoloration or
deposits), reconnect power source.
CURRENT CARRYING PARTS - An easily detected but abnormal condition is the
discoloration of current carrying parts (particularly copper). Discoloration
appears as darkened material or finishes. Any discolored parts should be
cleaned. WARNING: ANY MAINTENANCE SHOULD ONLY BE DONE WILE THE POWER IS OFF.
If the discoloration persists, contact the factory. ----
LUBRICAT.ION
The cams of the ATS are lubricated with Super Lube PTFE grease, the gears with
Dow Chemicals "Molykote" (321R or GN paste). These lubricants provide adequate
lubrication for a clean and properly maintained swithces lifetime. Should debris
contaminate the mechanism, clean and apply additional lubricants. Mobiltemp
SHC-32 is ~ed on isolating contacts.

FIELD NOTES
(
\
MODEL NO: ______________________________________________ _
SERIAL NO=----------------------------------------------
DATE SHIPPED=--------------------------------------------
START-UP DATE=--------------------------------------~--
DRAWINGS SUPPLIED:_·--------------------------------------
TEST AND MAINTENANCE NOTES:
OBSERVATIONS
TESTED NOTES
DATE
i.

PURPOSE
Zenith automatic transfer switches are used to provide a
~~ 1uous source of voltage for lighting and power circuits
b, .Jtomatically
transferring the lighting or power load
from the normal source to an emergency source of voltage
when the normal voltage fails or drops in voltage.
This manual is supplied to provide complete information on
the operation, installation and maintenance of the ZENITH
~TSD\-\ series mechanically held transfer switch. In addition
a
complete wiring diagram is provided with each transfer
switch. The instruction manual and the wiring diagram
should be kept in a safe place to serve as complete reference
information on this critically important piece of equipment.
Described in this manual, are the new 1.TSDH series, 1600
thru ?>OQ.O ampere sizes, featuring a new concept in transfer
switch design.
For details of operation, accessories, a~d wiring se~
·wiring diagram and operational sheet supplied with
:the switch. . · - -
WARNING
The power voltage present in this equipment is dangerous
to life. When operating or adjusting this equipment with
doors open, special care must be taken to avoid contact
with terminals carrying this voltage.
CONTACT REPLACEMENT
Contact
replacement is usually not necessary for many
years on the average transfer switch. When replacement is
necessary, all contacts are easily removed. Both the main
contacts and all control contacts are easily visible from the
front of the panel, for fast visual inspection.
INSTALLATION
A
good installation is as necessary as a good transfer switch.
This switch is designed for floor mounting. Floor mounted
cabinets must be well braced and protected from damage.
Be sure that the cabinet is not mounted directly under any
water pipes which may sweat and drip water into the
cabinet. Be sure cabinet is fully cleaned of dirt and concrete
dust before operation.
Enough room should always be allowed to open the cabinet
doors fully, so normal visual inspection of all parts is
possible.
Before installing the switch and before energizing the
circuits, check the switch for shipping or installation
damage.
The following may be used as a test procedure after
installation of the transfer switch:
Before connecting the load circuit, make sure normal line
contacts are closed, then energize the Nl circuit. The phase
relays and control relay will be energized. Next, energize
, the El circuit. The VFSM relay will be energized. Operate
the test switch TS to the test position. The switch will
transfer to the El side. Return the test switch to the auto
position. The transfer switch will restore to theN l position.
The load may now be connected and the same procedure·
followed. A periodic test of the switch, under load
conditions, is recommended ·to insure proper operation of
the main switch and all accessorieS.
CHECK LIST FOR START-UP
NORMAL OPERATION POINTS TO
CHECK IF NORMAL OPERATION DOES NOT OCCUR
1
2
3
4
Normal line fails and the engine
starts. (This can be simulated
with theTEST switch).
Engine starts, generator reaches
full voltage, switch transfers
to
emergency voltage.
Normal voltage restores and the
switch transfers back to normal.
Engine shuts down.
If engine generator does not start be sure the relay containing the engine start
contacts (marked
E) has dropped out and the contacts are closed. Be sure the
battery is connected and the control switch on the engine
is turned to automatic.
If
the engine fires but does not start, contact the engine dealer.
. Check at -rceney 11De tei'1111.111.U or aviteh to be sure the renerator Yolte.re
1a up to the proper value. Be sure the nsM relay pulls in. It 110t, aheclc
ViSM relay adjustment pa,e \. Check to see that the ar· relay 1s energ1::ec!.
Check
to see that the circuit to the CCNO coil (to ooen Nonaal), then CCE coil
(to close EmerpJ1C7) 1a complete thru the SE cutout Slliteh •
.
Check to aee that the nonaal Yolt~ has restored to full value.
Check to see
that the phase relays have pulled 11:. (See phase rela:T al!just::ent pa~ I;. Check
tl:e CR relay to be sure that it 1z ene%;d:ed and !ts r.o:::al ccntact 1s clcsel!.
Check to see that. the cireuit to the CCEO coil (to open ::Z:.er~ney), then CC:I
coil (to close Normal) is COII!llete thru the SN cutout Slliteh. ·
Be sure voltage is present at relay containing E contact and the relay is energized.
If timer U
is used be sure it times out and operates its end-of-cycle switch.
,_z--a·N-IT-H
. . . ~ . ~ ·. . . . .