Tennant 235E, Operator'S Manual

Page: 46 / 74

MAINTENANCE
235E MM165 (3--91)
3-14
To determine the corrected specific gravity
reading when the temperature of the battery
electrolyte is other than 80
_
F (27
_
C):
Add to the specific gravity reading 0.004,
4 points, for each 10
_
F (6
_
C) above 80
_
F
(27
_
C).
Subtract from the specific gravity reading
0.004, 4 points, for each 10
_
F (6
_
C) below
80
_
F (27
_
C).
BATTERY CHARGING
The machine batteries are specially made for this
type of application. They are unique in that they
hold their power for long periods of time, but they
can only be recharged a certain number of times.
To get the most life from the batteries, charge
them when 25% of their power is left.
Eleven to fourteen hours is generally enough time
to charge a discharged set of standard, 295 A/h
batteries. Twelve to fifteen hours is generally
enough time to charge a set of heavy duty,
306 A/h batteries. If the batteries are not fully
discharged, set the timer for a period of time that
is proportionally less than what is required for a
fully discharged set of batteries, ie: half
discharged heavy duty batteries need seven to
eight hours of charging time.
Do not expose the battery charger to water. Do
not touch uninsulated battery terminals or
unnecessarily expose any portion of your body to
the batteries when making electrical connections.
TO CHARGE BATTERIES
1. Stop the machine on a flat, dry surface next
to the charger, and set the machine parking
brake.
FOR SAFETY: Before Leaving Or Servicing
Machine; Stop On Level Surface, Set Parking
Brake, Turn Off Machine And Remove Key.
2. Place the key switch in the “OFF”position.
3. Open the seat support.
WARNING: Batteries Emit Hydrogen
Gas. Explosion Or Fire Can Result.
Keep Sparks And Open Flame Away. Keep
Covers Open When Charging.
4. Check the electrolyte level in the batteries.
Before charging, add just enough distilled
water to cover the plates. Then, after
charging is completed, add enough water to
bring the electrolyte up to the indicator mark.
If the water level is topped off before
charging, normal expansion of the
electrolyte may cause an overflow, resulting
in loss of acid balance and acid damage to
the machine area around the batteries.
NOTE: Machines with heavy duty batteries must
have the vacuum fan exhaust deflector removed
to gain access to the battery caps.
5. Replace battery caps and leave them in
place while charging.
6. Unplug the machine connector from the
batteries connector.
B
A
03367
BATTERIES CONNECTOR
A. Batteries Connector
B. Machine Connector