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Technician Service Guide 33367B

SECTION 8 – FACTORY ASSISTANCE

Technical support is available from the factory
Monday through Friday, 8am – 4:30pm CT.

Contact may be made by the following methods:

Mail: Lester Electrical

625 West ‘A’ Street

Lincoln, NE 68522-1794 USA

Attention: Service Department

Phone: (402) 477-8988

FAX: (402) 474-1769

E-mail:

[email protected]

SERVICE WIRING DIAGRAM

BLACK

AC VOLTAGE *

SELECTOR

SWITCH

POWER

SWITCH

BLACK

GREEN

WHITE

100-125
200-250

VAC

INPUT

WHITE

FUSE

BROWN

GRAY

BLACK

FUSE

TRANSFORMER

SCR

BLACK

SCR

BLACK

SHUNT

WHITE

OUTPUT

AMMETER

40 AMP

CIRCUIT BREAKER

BLACK

BLUE

NATURAL

BLUE

ELECTRONIC

TIMER

*SHOWN IN

100-125 VOLT

POSITION

RED

ORANGE

BLUE

BLACK

BLUE

YELLOW

BROWN

01821

PLEASE REFER TO THE SPECIFIC DIAGRAM IN THE OWNERS MANUAL.

Содержание 33367

Страница 1: ...OR SERVICE TO THE CHARGER TURNING THE CHARGER OFF DOES NOT REDUCE THIS RISK WARNING DO NOT OPERATE THE CHARGER IF IT IS MALFUNCTIONING PERSONAL INJURY OR PROPERTY DAMAGE COULD RESULT WARNING DO NOT TOUCH THE BATTERY TERMINALS OR CONTACTS ON THE CHARGING PLUG AN ELECTRIC SHOCK COULD RESULT This service guide applies to most portable style SCR regulated charger designs but not all This service guide...

Страница 2: ...ratures Batteries allowed to sit unmaintained in storage will self discharge sulfate to various degrees and lose capacity Repeated charging will generally result in the recovery of most of the battery s capacity though some permanent loss can be expected BATTERY TYPES Battery manufacturers frequently use the same battery cases for different battery types Replaceable liquid electrolyte deep cycle b...

Страница 3: ...equired for the charger to recognize a battery is connected varies by model Table 1 will provide general guidelines for testing but may not represent the actual minimum voltage which may be lower Charger Nameplate DC Voltage Typical DC Voltage Required 12 8 24 16 36 25 48 33 Table 1 Inspect and test for good AC and DC fuses circuit breakers before proceeding with this test If either the AC or DC f...

Страница 4: ...e wires as shown on the service wiring diagram If no DC voltage is measured or the DC voltage measured is lower than the DC voltage measured at test points E F repair or replace the control cable assembly See figure 2 Figure 2 If the DC voltage measured at the electronic timer edge connector or flag terminals is correct testing of the AC line voltage must be performed DANGER HAZARD OF ELECTRIC SHO...

Страница 5: ... not illuminate after transformer replacement the electronic timer must be repaired or replaced Replace the electronic timer with the replacement service part specified on the parts list for the specific model of charger being serviced and confirm indicator light illumination WARNING ALWAYS TEST SCRs BEFORE REPLACING AN ELECTRONIC TIMER DAMAGE AND SUBSEQUENT FAILURE WILL OCCUR TO ALL ELECTRONIC TI...

Страница 6: ... replace failed DC fuse fuseholder circuit breaker and or ammeter as needed and retest If the charger passes both the Test for battery voltage increase and Inspect and test charger DC circuit proceed to Section 3 Part A Test for correct transformer output coil voltage If the transformer output coil voltage test indicates a failed transformer retest charger for proper operation after transformer re...

Страница 7: ...cid batteries there are two ways to test if the electrochemical reaction has actually ceased 1 An accurate hydrometer can be used to determine cessation of the electrochemical charging reaction If the measured specific gravity of several cells does not increase in three 3 consecutive readings taken one hour apart while the charger continues to charge the charger is operating too long 2 An accurate...

Страница 8: ...the transformer output coil leads and compare to the values in table 2 Figure 4 If the measured AC voltage indicates the transformer has failed indicated by significantly lower voltage readings replace the transformer with the replacement service part specified on the parts list for the model charger being serviced Part B Test for correct transformer auxiliary coil voltage Disconnect the AC power ...

Страница 9: ...Anode to Cathode will cause the DC circuit breaker to trip or fuse to blow see Section 6 Charger DC Circuit Breaker Trips Fuse Blows for more information An SCR with a shorted anode to gate can be detected by measuring the resistance between the anode to gate To do so first disconnect the charger AC power plug from the outlet and the DC output cord from the equipment charging receptacle Remove the...

Страница 10: ...or chargers without an ammeter an in line ammeter may be used in the DC charging circuit to test for current flow or a DC voltmeter may be used to test for momentary battery voltage increase If the ammeter does not indicate current flow for each SCR the SCR not causing ammeter deflection has failed and the SCR assembly must be replaced SECTION 5 CHARGER AC CIRCUIT BREAKER TRIPS FUSE BLOWS Before p...

Страница 11: ...KER TRIPS FUSE BLOWS This condition can be caused by a charger problem a weak fuse or circuit breaker protecting the circuit or an overloaded circuit If the building AC power fuse or circuit breaker blows connect the charger to other outlets on different circuits in the building If the charger operates properly on other circuits have a qualified electrician check the original circuit If the charge...

Страница 12: ...lectrical com SERVICE WIRING DIAGRAM BLACK AC VOLTAGE SELECTOR SWITCH POWER SWITCH BLACK GREEN WHITE 100 125 200 250 VAC INPUT WHITE WHITE AC FUSE 1b 1a 2b 2a BROWN BROWN GRAY BLACK AC FUSE TRANSFORMER SCR BLACK BLACK BLACK SCR BLACK 1 2 3 4 9 10 11 12 SHUNT YELLOW BROWN BROWN WHITE DC OUTPUT AMMETER 40 AMP CIRCUIT BREAKER BLACK BLACK BLUE NATURAL BLUE ELECTRONIC TIMER 5 6 7 8 SHOWN IN 100 125 VOL...

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