62-61753-21   
 
LogiCOLD  microprocessor  equipped  units 
may  start  automatically  at  any  time  the 
START/RUN-OFF  switch  (SROS)  is  not  in 
the OFF position. Also, the unit may be fit-
ted  with  two  way  communication  equip-
ment that will allow stating of the unit from 
a remote location even though the SROS is 
in the off position. 
 
Be  aware  of  HIGH  VOLTAGE  supplied  at 
the  power  plug  or  from  the  generator. 
When  performing  service  or  maintenance 
procedures:  ensure  any  two  way  commu-
nication is disabled in accordance with the 
manufacturers  instruction,  ensure  the 
START/RUN-OFF switch is in the OFF posi-
tion  and,  whenever  practical,  disconnect 
the high voltage source and disconnect the 
negative  battery  connection.  NEVER  dis-
assemble  the  generator:  HIGH  MAGNETIC 
FIELD INSIDE! This  field  can  interfere  with 
cardiac  implants  such  as  pacemakers  and 
defibrillators. 
 
Under  no  circumstances  should  ether  or 
any other starting aids be used to start en-
gine.  
 
Ensure the power plug is clean and dry be-
fore  connecting  to  any  electrical  out-
let/receptacle.  Do  not  connect  to  any  elec-
trical  outlet  without  checking  that  it  meets 
the  380/3/50  and  16  Amp  electrical  re-
quirements of the unit. 
 
Always  place  SROS  in  the  OFF  position 
and turn off the high voltage power supply 
before  disconnecting  the  high  voltage 
power plug from the unit. 
 
If  the  unit  is  in  Standby  Operation  and 
powered,  voltage  will  be  applied  to  high 
voltage  components  (i.e.  the  fan  motor 
contactor)  and  those  components  will  op-
erate  (i.e.  the  fan  blades  will  turn)  when 
those  components  are  energized  using 
component test mode. 
 
Do not remove the cap from a hot radiator; 
if  the  cap  must  be  removed,  do  so  very 
slowly  in  order  to  release  the  pressure 
without spray. 
 
Inspect  battery  cables  for  signs  of  wear, 
abrasion  or  damage  at  every  Pretrip  in-
spection  and  replace  if  necessary.  Also 
check  battery  cable  routing  to  ensure  that 
clamps  are secure  and  that  cables  are  not 
pinched  or  chafing  against  any  compo-
nents. 
 
Use  the  required  protective  eye  wear  and 
clothing when working with solvents. 
 
Beware  of  moving  poly  V-Belt  and  belt 
driven components. 
 
When  working  with  belts,  beware  of  pinch 
points. 
 
The  +5.0  VDC  (terminal  B)  is  common  be-
tween the Compressor Discharge Pressure 
Transducer, the Compressor Suction Pres-
sure  Transducer,  and  the  RPM  sensor.  If 
this circuit is shorted to ground (due to one 
of the mentioned components being defec-
tive, or a worn wire) the MessageCenter will 
show 
Suction  Pressure:  -1  bar  (-14.7  psig) 
Discharge  Pressure:  0  bar/psig 
Engine RPM: 0. 
 
Before  removal  of  the  compressor,  relieve 
the  internal  pressure  by  very  carefully 
loosening the couplings to break the seal.