Upright LX31 Service Manual

Switch Adjustments Section 2 - Service and Repair
Page 2-14 067448-023 LX31/LX41 Electric and Bi-Energy Work Platform | European Specifications
P ROXIMITY S WITCH - S ERIAL N UMBER 4275-C URRENT
Refer to Figure 2-9.
The Proximity Switch is located near the front right corner of the chassis under the elevating assembly. Its
function is determined by the location of the lower elevating assembly tube.
P ROXIMITY S WITCH F UNCTION ,S ERIAL N UMBER 4275-C URRENT
A red LED at the rear of the switch should be ON when the elevating assembly tube is next to the switch
(the platform is lowered). The Proximity Switch controls the machine operation based upon the proximity of
the lower elevating assembly tube to the Proximity Switch.
When Elevating:
• The Level Sensor is enabled.
• Power to the High Speed Circuit is cut, preventing the machine from travel faster than 0,8 km/h
(0.5 mph).
When Completely Lowered:
• Power is supplied to the High Speed Circuit, allowing the machine to travel up to 5 km/h (3.0 mph)
when the Platform Controls Drive Speed Switch is set to HI SPEED.
T EST THE P ROXIMITY S WITCH ,S ERIAL N UMBER 4275-C URRENT
WARNING
!
!
Never perform service while the platform is elevated without first blocking the elevating assembly.
DO NOT stand in the elevating assembly area while deploying or storing the maintenance brace.
1. Place the machine on a firm, level surface.
2. Deploy the maintenance brace (see “Blocking The Elevating Assembly” on page 2-8).
3. Disconnect the switch leads and connect a multimeter to the switch.
• The switch contacts should be OPEN (no continuity).
• Place a piece of metal near the face of the switch. This should close the switch contacts. If there is no
continuity, the switch is defective.
4. Connect the switch leads, store the maintenance brace and lower the work platform.
5. With the work platform fully lowered, look at the Proximity Switch.
• When the Platform Controls key Switch is ON, the red LED at the rear of the Proximity Switch is ON.
• If the red LED is OFF, the Proximity Switch is out of adjustment.
6. Elevate the work platform not more than 1 m (3ft.).
• The red LED should turn OFF when the machine reaches 50 - 60 cm (1.75 - 2 ft.). If it remains ON, the
switch is out of adjustment.
T EST H IGH S PEED C IRCUIT ,S ERIAL N UMBER 4275-C URRENT
1. Elevate the work platform 0,75 m (2.5 ft.).
2. Turn the Drive Speed Switch to HI SPEED and attempt to drive the machine.
• If the machine will drive faster than 0,8 km/h (0.5 mph), the switch is out of adjustment or defective.

Upright LX31 Specifications

General

Brand	Upright
Model	LX31
Category	Lifting Systems
Language	English