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M&G Technologies, LLC | Cleveland, OH  44202

Troubleshooting - cont.

BATTERIES DO NOT FULLY CHARGE 

If the batteries are charged overnight, make sure the AC supply is not being switched-

off at night with other building items. 

NEW BATTERIES

If batteries are new they sometimes need 20 to 30 charge/discharge cycles before they 

charge normally due to a process called plate formation. With new batteries the 100% 

LED may not light after a normal overnight charge. The batteries and charger are fine – 

the machine should be used and charged each night. Within a few days to a week the 

100% LED will go on during a normal overnight charge. 

Brand new batteries are more easily damaged by heavy discharge than batteries that 

are older. Try to avoid heavy discharge when new batteries are installed for at least the 

first 20 charge cycles. 

OLD BATTERIES

If batteries are old, check the battery condition following the battery supplier’s 

instructions. Check for dead cells or Weak cells. If the charger case gets warm after 

several hours of charging, the charger is probably good and the batteries bad.   

Uninstalling the Charger

 

WARNING:  

Disconnect from AC voltage before doing any service. When  

 

plugged-in the AC wiring is an electric shock hazard. Disconnecting the DC 

output connector near the batteries when the charger is ON may cause arcing and the 

batteries to explode resulting in serious injury or death.

 

WARNING:

  Risk of an electric shock causing serious injury or death. Do not  

 

touch un-insulated parts of the charger wires, battery connector or battery 

terminals. Be careful with tools as shock or arcing from shorting of electrical parts can 

cause serious injury or death. Remove rings, watches, and jewelry to avoid arcing and 

electric shock.

 

WARNING:

  Do not disassemble the charger. Take it to a factory-authorized   

           service agent when service or repair is required. High voltages inside the charger 

are an electric shock hazard and can result in serious injury or death.

Summary of Contents for 24V-25A

Page 1: ......

Page 2: ...the charger The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of un insulated dangerous voltage within the equipment s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important oper...

Page 3: ...gorithms Flooded type batteries and sealed gel AGM batteries Universal AC input 85 130 170 264 VAC 47 63 Hz range Single model for worldwide use Low battery voltage start LED indicators Charger protection Voltage mismatch Reverse polarity short circuit Temperature protection Storage refresh modes AC line interlocking Smart timer Automatically shuts down charger if charging cannot be completed Seal...

Page 4: ...uency 50 60 Hz Phase Single Phase AC Input Tolerances Voltage 85 135 170 264 VAC Frequency 47 63 Hz DC Output Ratings Voltage 24V Current 25A AC Line Interlocking Environmental Operating Temperature 25 to 131 F 31 to 55 C Storage Temperature 40 to 185 F 40 to 85 C Mechanical Dimensions L x W x H 8 35 x7 x5 25 212mm x 179mm x 139mm Water Resistance IP65 ...

Page 5: ...and an easy access to cables sockets Safety Instructions Verify that the available supply voltage corresponds to the voltage that is stated on the battery charger name plate To avoid damaging the power cord do not put anything on it or place it where it will be walked on If the cord becomes damaged or frayed replace it immediately Do not operate a charger that is not working correctly An electric ...

Page 6: ...ath Ensure that the AC voltage supplied to the charger is within the ranges in the specification table Voltages outside this range particularly high voltages can result in an electric shock and fire hazard and will fail the charger To reduce the rosk of an electric shock connect only to a properly grounded single phase 3 wire outlet Do not attempt to service the charger if you are not a trained se...

Page 7: ...LED shows the battery is charging The green 100 LED will light when the battery reaches 100 Charging time is dependent on depth of battery discharge battery AH rating battery condition and temperature The battery can be disconnected after the 100 LED is on or left connected 4 If you leave the charger plugged to the AC socket after charging is completed 100 LED on the charger goes into maintenance ...

Page 8: ...s can look good outside but be corroded inside causing an output connection error DC LED will not light 2 The charger cools through the case fins If the fins become covered with debris the charger s over temperature protection system may reduce charging power Clean off fins to improve cooling 3 Replace the charger if case damage breaks the water tight seal 4 Inspect wiring weekly including AC plug...

Page 9: ... Reason battery voltage may be too hight STEP 3 Check if the voltage of the battery pack is greater than 6V If Trouble shooting steps Possible cause STEP 1 Check to see if the battery pack is a 24V pack If no change to STEP 2 Check to see if batteries are connected correctly no open circuit short circuit or reverse polarity Trouble shooting steps Condition AC power on charging in process Condition...

Page 10: ...ck Trouble shooting steps STEP 2 Was there a load on the battery during the charging process If Possible cause Possible cause Possible cause Trouble shooting steps STEP 5 If none of the above worked check to see if the battery AH STEP 2 If the batteries are bad change batteries Possible cause Charger is not charging Reason battery voltage may be too hight STEP 3 Check if the voltage of the battery...

Page 11: ...ry condition following the battery supplier s instructions Check for dead cells or Weak cells If the charger case gets warm after several hours of charging the charger is probably good and the batteries bad Uninstalling the Charger WARNING Disconnect from AC voltage before doing any service When plugged in the AC wiring is an electric shock hazard Disconnecting the DC output connector near the bat...

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