Genie S-80 Service Manual page 72

Section 3 • Scheduled Maintenance Procedures
CHECKLIST C PROCEDURES
21 Using Illustration 3 as a guide, locate D31 Valve
Power LED on the ALC500 printed circuit board.
ALC 500 Board
Illustration 3
22 Step on the footswitch at the platform.
Result: The Valve Power LED should not
illuminate.
Result: The Valve Power LED is illuminated.
Remove the machine from service and contact
the Genie Service Department .
23 Securely install the red wire, disconnected in
step 20, onto terminal 5 of the relay timer.
24 Step on the footswitch at the platform.
Result: The Valve Power LED should illuminate.
Result: The Valve Power LED is not illuminated.
Remove the machine from service and contact
the Genie Service Department .
25 Using a suitable lifting device, place a test
weight equal to that of the available capacity at
the center location shown in Illustration 1.
3 - 42
Valve Power LED
S-80 • S-85 • S-80X
26 Using a suitable lifting device, place an
additional 50 lbs / 23 kg of weight onto the
platform.
Result: The alarm should sound and the Valve
Power LED should not light. The platform
overload indicator lights should be flashing at
both the ground and platform controls.
27 Working from outside the platform and standing
next to the platform rotator, locate the orange
wire, which enters into the base of the platform
control box from the load sense switch and
locate the wire terminal at the end of the wire.
Tag and disconnect the connectors.
Refer to Illustration 2.
28 Using a multimeter set to read resistance
(ohms), securely install a lead from the
multimeter to the connector on the orange wire,
and securely connect the other multimeter lead
to a ground point in the control box.
Result: The readout on the multimeter should
indicate zero resistance.
Result: The readout on the multimeter shows
resistance. Remove the machine from service
and contact the Genie Service Department .
29 Using a suitable lifting device, remove all weight
from the platform. Note the result on the
multimeter.
Result: The readout on the multimeter should
indicate infinite resistance.
Result: The readout on the multimeter shows
zero resistance. Remove the machine from
service and contact the Genie Service
Department .
31 Turn off the multimeter and remove the leads
from the machine. Securely connect the wires
disconnected in step 27.
32 Close the platform control box. Install and
securely tighten the fasteners. Do not
overtighten.
February 2012
Part No. 122985