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PULSE 6 SERVICE MANUAL

PAGE 3.5

SEPT 2011SUNRISE MEDICAL

Section 3

VR2 Controller Diagnostics Codes (cont.)

Nine Bars - Solenoid Brake Trip

Battery Fault

Check that the batteries are fully charged, the

correct voltage and in good condition. Take a

voltage reading from pin 1 and pin 2 of the charger

port of the VR2 controller, see (figure 3.5.2) If the

meter reads more than 30 volts, then check the

charger. Otherwise, replace your controller.

Ten Bars - High Battery Voltage

An excessive voltage has been applied to the

control system. This is usually caused by a

poor battery connection. Check the battery

connections.

Fig .3.5.2

The parking brakes have a bad connection. Check

the parking break and motor connections. Make

sure the control system connections are secure.

Measure the two small contacts on the four-pin

motor connector (figure 3.5.1). If both motor

connectors read approximately 60 ohms, (for

chairs prior to PLS-101619 only) then replace

the controller. Otherwise replace the motor that

does not read approximately 60 ohms.

For chairs after PLS-101619 or with serial

number prefix PLS6A, or PLS6B, it should

read ≈13.3 ohms. If both motor connections

read ≈13.3 ohms, then replace the controller.

Otherwise replace the motor that does not read

≈13.3 Ohms.

Fig 3.5.1

Figure 3.5.2 shows Motor in unlocked (free-

wheel) 9bar state.

fig. 3.5.2

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