Discussion:
No Lift, no fault code

Hi,
I'm trying to troubleshoot a BT OP1000SE the main cab has not lift, no code on a5 card. Mini mast still lifts & machine drives fine just no main lift.
Can anybody help?
Thanks,
Chris
  • Posted 3 Sep 2020 21:01
  • By Chris_Butcher
  • joined 3 Sep'20 - 1 message
  • Essex, United Kingdom
Showing items 1 - 1 of 1 results.
Hi.
Pls,check
The battery controller is connected to cable 26 and fused by
F66. The battery negative comes directly from cable 40. The
battery controller stops the cabin lifting function when only
20% of battery capacity remains. The battery controller's
contact is connected to A2/103.
Slack chain monitors S81 and S82
check whether the cabin lift chains are taut. If either of the
chains goes slack, one of the slack chain monitors opens and
stops the cabin lowering motion. Applies with duplex masts.
Two more slack chain monitors, S89 and S90, apply with a
triplex mast.
An affected slack chain monitor permits a lifting movement of
200 mm.
To lift the forks, press switch S34 (electrical diagram 5) and lift
the joystick. This affects potentiometer R2. Lifting speed
depends on how high the joystick is lifted. When the joystick is
lifted, a voltage change (neutral position = +10 V) is applied to
A2/302. The computer now supplies a voltage to contactor
K30. Pump motor M3 starts. Solenoid valve Y5 is activated.
The flow to the forks' lift cylinder is controlled by proportional
valve Y1. The proportional valve's coil is current-controlled,
A2/508, 509.
  • Posted 5 Sep 2020 18:36
  • Modified 5 Sep 2020 18:37 by poster
  • By Prompi_Kansu
  • joined 12 Jun'20 - 2 messages
  • Bangkok, Thailand
BT

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