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LOFA MC536 Operation and Troubleshooting 

THE INFORMATION CONTAINED IN THIS DRAWING IS CONFIDENTIAL AND THE SOLE PROPERTY OF LOFA INDUSTRIES INC. Reproduction or dissemination in whole or in part in any form or medium without express prior written permission of LOFA INDUSTRIES INC is prohibited. 

1

6

 AWG Black

16 AWG Black

16 AWG R

e

d

16 AWG Bl

a

c

k

16 AW

G

 B

lack

1

6

 A

W

G Bl

ack

16 AW

G

 B

lack

16 A

W

Re

d

1

6

 A

W

G R

e

d

16 AWG Red

1

6

 A

W

G R

e

d

G1

Voltmeter

-

+

J18

6.3mm PosLock

J20

6.3mm PosLock

J23

6.3mm PosLock

FLT1

FLT2

J17

6 Pos. Black

1

2

3

4

5

6

16 AWG Black
16 AWG Tan
16 AWG Black
16 AWG Grey

J22

6.3mm PosLock

J21

6.3mm PosLock

MSS200

INTERFACE

1
2
3
4
5
6
7
8
9

10
11
12
13
14

1
2
3
4
5
6

2
3

X10

1

X6

X7

30
31

31
30

50f

58

K1-30
K1-87a
31
K1-87
k1-87
K1-85

K4-87

K4-87a

D+
W-G
19-17

Sol+

X9

X4

X3

X5

D+ Alternator
Thermistor
Tachometer
Ground
AutoStart
Ground
Alarm
Pressure Switch

Auto Power (58)

Pressure Switch
Preheat Control
Starter (50)
Solenoid

X1

1
2
3
4

X11

Aux Relay

Sol2

X8

G2

14 AWG Black

16 AWG Tan

14 AWG Red

J26

6.3mm PosLock

14 AWG Purple

J26

6.3mm PosLock

16 AWG Black

16 AWG Orange

J29

6.3mm PosLock

16 AWG Yellow/Black
16 AWG Yellow/Orange

16 AWG Blue

12 AWG Red

12 AWG Red

Accessory (15)

Tachometer

D+ Alternator

Temp Gauge

Pressure Gauge

Preheat Control

 (30)

Solenoid

Aux Switch 2

Aux Switch 1

Temp Switch

Pressure Switch

Ground

Starter (50)

Mix Male

GT 150/280

A

B

C

D

E

F

G

H

J

K

L

M

N

P

P1

J34

6.3mm PosLock

14 AWG Red/Black

16 AWG R

e

d

J1

6.3mm PosLock

16 AWG R

e

d

Programming

Connector

MC-536

1

2
3
4
5
6
7
8
9

10
11
12
13
14

50f

50e

W

Temp

Oel (PSI)

Tachometer
Aux Switch 1
Temp Switch
Aux Switch 2
Pressure Switch
Ground
Ground
Accessory (15)
Accessory (15)
Preheat Control
Solenoid
Pressure Gauge
Temp Gauge

D+ Alternator

Alm

Kl.31 (Gnd)

Gen (D+)

Mag (Sol)

ext. Stop

15

15

30

15a

Ru

n

n

in

g

Ba

tt

e

ry

PS

I

Tem

p

Au

x

 1

&

2

Pr

h

J16

Circuit Board

30

Kl.31 (Gnd)

VG (Preheat)

BD1

J24

6.3mm PosLock

16 AWG Red/White

J10

6.3mm PosLock

J12

6.3mm PosLock

J15

6.3mm PosLock

J3

6.3mm PosLock

J6

6.3mm PosLock

J9

6.3mm PosLock

J11

6.3mm PosLock

J14

6.3mm PosLock

J16

6.3mm PosLock

J25 6.3mm PosLock

J26

6.3mm PosLock

J31

6.3mm PosLock

KS1

KeySwitch

15

15

50A

19

19

58

30

30

17

17

J33

6.3mm PosLock

14 AWG Red/Black

12 AWG Red/Black

14 AWG Red

12 AWG Red

Description:

Part Number:

250 Hembree Park Dr Ste 122

Rev

Drawn By:

Date:

Roswell GA 30076

phone: 770-569-9828

fax: 770-569-9829

Tolerances

+/-

.X

.XX

.XXX

ANGº

.1

.02

.005

Sheet

of

www.LOFA.net

MANUFACTURER OF QUALITY ENGINE COMPONENTS

INDUSTRIES, INC.

MC536G7A GT Point to Point

MThiam

02-08-06

1

1

0000

G5

Hourmeter

-

+

G6

+

+

-

-

G4

Pressure

+

+

-

-

G3

+

+

-

-

G7

Fuel

Level

+

+

-

-

J36

KeySwitch 

6 Pos.

5

6

7

8

9

10

J37

KeySwitch

4 Pos.

1

2

3

4

16 AWG Green
16 AWG White
16 AWG Yellow
16 AWG Yellow/Blue

J35

JPT 14 POS 

FEMALE

1

2

3

4

5

6

7

8

9

10

11

12

13

14

J13

6.3mm PosLock

J19

6.3mm PosLock

J8

6.3mm PosLock

J5

6.3mm PosLock

J2

6.3mm PosLock

J4

6.3mm PosLock

J7

6.3mm PosLock

J27 6.3mm PosLock

J28

6.3mm PosLock

J30

6.3mm PosLock

J32

6.3mm PosLock

 

18 

Revision - A - 22-May-2006 

Содержание MC536

Страница 1: ...utdated electromechanical relays to ensure reliable high current switching The MC536 is field configurable with an inexpensive programmer Some of the MC536 configurable features include Automatic preh...

Страница 2: ...or make the equipment unsafe to operate Only persons with appropriate training skills and tools should perform these functions Improper operation maintenance or repair of this product can be dangerou...

Страница 3: ...enoid output is turned off after 30 seconds even if preheating As soon as the key switch is turned to the start position the solenoid output is enabled The afterglow cycle begins when the key switch r...

Страница 4: ...approximately 14 volts on a 12 volt system 28 volts on a 24 volt system while the engine is running indicates the battery is charging properly Irregular blinking of the Battery LED may indicate a fai...

Страница 5: ...ulating sealant i e Teflon tape when installing switches Some thermostat housings are composites and do not provide ground for the switch AUX LED Red A solidly illuminated AUX LED indicates auxiliary...

Страница 6: ...resitance for higher pressure If the gauge is not connected to the sender the gauge will read full scale pegged A defective sender or shorting the gauge input to ground will cause the gauge to read 0...

Страница 7: ...olenoid circuit If the engine shutsdown or is not started within 30 seconds the hourmeter stops counting Additional Gauges Additional gauges can be added by removing blind covers and installing the ga...

Страница 8: ...s Warning Disconnecting the battery while the engine is running may damage electrical components When using a battery disconnect switch LOFA recommends using a 2 pole switch to disconnect both the bat...

Страница 9: ...electrical environment practices Inductive devices such as relays solenoids and motors generate voltage transients and noise in electrical circuits Unsuppressed voltage transients can exceed SAE speci...

Страница 10: ...the welder to electrical components such as the control ground or sensors Improper grounding can cause damage to electrical components Clamp the ground cable from the welder to the component being we...

Страница 11: ...Possible Cause Possible Remedy Shutdown switch input active Verify shutdown source exists correct condition or correct faulty circuit Battery not charging Verify alternator charging see Alternator no...

Страница 12: ...ause Possible Remedy Empty fuel tank Fuel engine Clogged filter Replace filter Air in fuel lines Bleed fuel lines Low fuel pressure Replace faulty fuel pump and or clogged filter Faulty fuel pump Repl...

Страница 13: ...D Illuminated Correct overheating condition or faulty switch correct wiring fault Only Aux LED Illuminated Correct fault condition i e coolant level or faulty switch correct wiring fault All normally...

Страница 14: ...the fuel run stop solenoid pull coil is enabled for the first second In normal operation all other Power Box outputs are active as long as their corresponding inputs are active Power Box Troubleshoot...

Страница 15: ...ion and Troubleshooting Typical Schematics The following pages show typical schematics Details vary from installation to installation See the specific schematics for installation for details Revision...

Страница 16: ...Red 16 AWG Red G1 Voltmeter J18 6 3mm PosLock J20 6 3mm PosLock J23 6 3mm PosLock FLT1 FLT2 J17 6 Pos Black 1 2 3 4 5 6 16 AWG Black 16 AWG Tan 16 AWG Black 16 AWG Grey J22 6 3mm PosLock J21 6 3mm Po...

Страница 17: ...tor Wiring Diagram Delco Alternator Wiring Diagram 14 AWG Purple To P1 H Note WK Switch G Gauge SW1 Aux 1 Shutdown J2 8 Pos White 1 2 3 4 5 6 7 8 J1 8 Pos Yellow 1 2 3 4 5 6 7 8 CB1 SW1 Aux 2 Shutdown...

Страница 18: ...F G H J K L M N P P1 J34 6 3mm PosLock 14 AWG Red Black 16 AWG Red J1 6 3mm PosLock 16 AWG Red Programming Connector MC 536 1 2 3 4 5 6 7 8 9 10 11 12 13 14 50f 50e W Temp Oel PSI Tachometer Aux Swit...

Страница 19: ...Aux 1 Shutdown SW2 Aux 2 Shutdown Indicator Only THE INFORMATION CONTAINED IN THIS DRAWING IS CONFIDENTIAL AND THE SOLE PROPERTY OF LOFA INDUSTRIES INC Reproduction or dissemination in whole or in pa...

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