Tennant 9021374, Operator'S Manual

Page: 54 / 354

EN
WARNING
Make sure the mains system is suitably earthed and that sockets ensure the continuity of the earth
conductors.
DANGER
Failure to observe these instructions could cause possibly serious damage to people and things and
invalidates the guarantee.
Power supply batteries (battery powered versions)
DANGER
Installation and connection / removal of the batteries must be carried out by an TENNANT-approved
technician (referred to hereinafter as skilled technician).
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leak-proof tubular batteries: these require regular checks on electrolyte level. When necessary, top up
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gel batteries: this type of battery is maintenance-free.Technical characteristics must correspond to
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seriously jeopardise manoeuvrability and lead to the brush motor overheating. Batteries with a lower
capacity and weight will require charging more frequently. Batteries must be kept charged, dry, clean
and with tight terminals.
Batteries: preparation
DANGER
During installation of the batteries or any type of battery maintenance, the skilled technician must be
provided with the necessary personal protection devices (gloves, goggles, overalls, etc) to limit the risk
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and do not smoke.
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If the batteries are dry, proceed as follows before installing them in the machine.
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plates are entirely covered (this requires at least a couple of passes for each element);
Ambient temperature
°C
Ambient temperature
°F
% Sulphuric acid % Distilled water
> + 35°C > + 95°F 25% 75%
from 0°C to + 35°C from +32°F to + 95°F 30% 70%
from 0°C to - 20°C from +32°F to - 4°F 40% 60%
< - 20°C < + 4°F 45% 55%
Ź
leave for 4-5 hours to allow the air bubbles to come to the surface and the plates to absorb the elec-
trolyte;
Ź
make sure the level of electrolyte is still above the plates and if necessary top up with sulphuric acid
solution;
Ź
close the caps;
Ź
mount the batteries on the machine (following the procedure described below).
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