English
Electric pallet truck
EGU 14 P; EGU 22 P; EGU 30 P
F8.1.21
Design changes under reserve!
page 30
7.6. Operation in Winter Time or at low Temperatures
To avoid excessive cooling of the battery and the hydraulic system, the electric stacker with electric travel
shall not be unnecessarily exposed to cold areas.
The storage area should have normal temperatures not below + 15°C.
Charging of the batteries below +15°C will take longer and is not economical.
0
20
40
60
80
100
-20
-10
0
10
20
30
40
temperature of the electrolyte
° C
capacity K5 %
At low temperatures the battery capacity is
quickly reduced (reference values see dia-
gram), that means the operating time is
reduced with descending temperatures.
Batteries should be recharged daily or more often, although consumption has been less than 80% of the ca-
pacity.
The electrolyte of a battery discharged by 80% (acidity 1,13 kg/l) will already freeze at -12° C.
Heavy discharged batteries are subject to freezing at temperatures just under 0°C.
The electrolyte of a newly charged battery (acidity 1,28 kg/l) will freeze only at approx. - 68°C.
The cooling period of a newly charged battery may last up to 12 hours depending on temperatures.
Before taking the stacker into operation and in order to warm up the oil, the lifting system should be operated
in unloaded state several times prior to leaving the temperature storage area.
For permanent operation at winter temperatures we recommend the use of multigrade lubricants for the hy-
draulic system and the wheel hub gear.
Please contact our Technical Department for questions concerning application and type of lubricant.
8. Operating Failures and Their Causes
8.1. Electric System
Failure
Cause
Remedy
defective fuse
replace the fuse
battery discharged
charge the battery
a cell connection in the battery has loos-
ened (only with PzS batteries)
reconnect and tighten
loose cable lug
reconnect and tighten
loose cable connecting plug
reconnect and tighten
abraded bushes in the motor or weakened
springs of the brushes
replace bushes with springs
failure in the contactor
check and replace
defective wiring to the contactor or motor
repair
With pressed driving
switch (rotary finger
lever), the drive motor
does not run.
failure in the impulse control
replace
silted battery
replace battery
sulphating or other failure in the battery
check respective replace the battery
Too early battery dis-
charge
accidental earth contact in the electric sys-
tem or battery
repair or replace battery
