MSP-070C Battery Maintainer
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com
4
Safety Guidelines
3.4 For flooded cell batteries, add distilled water in each cell until
the battery acid reaches the level specified by the manufacturer.
This helps purge excessive gas from the cells. Do not overfill. For
a battery without caps, carefully follow the manufacturer’s re-
charging instructions
3.5 Study all battery manufacturer’s specific precautions such as
removing or not removing cell caps while charging and recom-
mended rates of charge.
4 Grounding & Power Cord Connections
Recommended minimum AWG* size
for extension cords for battery chargers
AC input rating Amps
AWG* size of cord
Equal or
greater than:
But less
than:
Length of cord, feet (m)
25 (7.6) 50 (15.2) 100 (30.5)150 (45.6)
8
10
18
14
12
10
10
12
16
14
10
8
12
14
16
12
10
8
14
16
16
12
10
8
16
18
14
12
8
8
*American Wire Gauge
4.1 The charger must be grounded to reduce risk of electric shock.
The charger is equipped with an electric cord having an equip-
ment grounding conductor and a grounding plug. The plug
must be plugged into an outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
Hazardous voltage.
An improper connection can result in
electric shock
To avoid electrical shock or burn, never alter
the charger’s original AC cord and plug. Dis-
connect plug from outlet when charger is idle.
IF THE PLUG DOES NOT FIT THE OUTLET, HAVE A PROPER
OUTLET INSTALLED BY A QUALIFIED ELECTRICIAN.
4.2 An extension cord should not be used unless absolutely neces-
sary. Use of an improper extension cord could result in a risk of fire
and electric shock. If an extension cord must be used, make sure:
a. that the pins on plugs of the extension cord are the same
number, size, and shape as those of the plug on the charger;
b. that the extension cord is properly wired and in good
electrical condition;
c. that the wire size is large enough for the AC ampere rating
of charger.
5 Charger Location
Not for permanent installation: Modifying this charger for permanent
installation in a vehicle or installing this charger in a vehicle for
permanent use is not recommended.
In the event of fail device may generate
and emit sparks.
Only charge rechargeable flooded maintenance-
free, low-maintenance or deep-cycle batteries.
The MCC-Series is
NOT
designed outside use or for wet location
mounting. The charger must always be protected from direct contact
with water.
5.1 The charger must be located in an area with sufficient air space to
allow unrestricted airflow in and around the charger.
5.2 Locate the charger as far away from the battery as the charger
cables permit.
5.3 Never place the charger directly above the battery being
charged; gases from the battery will corrode and damage the
charger.
5.4 Never allow battery acid to drip on the charger when taking
gravity readings or filling a flooded cell battery.
5.5 Operate the charger only in a well-ventilated area that is free of
dangerous vapors.
5.6 Store the charger in safe, dry location and maintain it in perfect
condition.
5.7 Do not set the battery on top of the charger or where its acid
might drip onto the charger.
6 DC Connection Precautions
6.1 When attaching the charger clamps, be certain to make the best
possible mechanical as well as electrical connection. This will tend
to prevent the clamps from slipping off the connections, avoid dan-
gerous sparking, and assure safer and more efficient charging. The
clamps should be kept clean.
Hazardous voltage.
Can cause death or serious
personal injury.
Setting the switches to “OFF” does not always
disconnect the charger electrical circuit from
the AC power cord or the DC charger clamps.