230 Universal Procedures ChairBase Actuator Test and Repair

This illustration shows the three serviceable components of the base actuator. Use the table below to isolate the malfunction.

230 and 630 Chair Base Actuator Testing and Repair

Problem

Required Action

Motor runs, but makes grinding noise

Clean / lube actuator threads, Replace actuator if necessary

Motor runs, but chair does not move

Inspect / replace motor coupler

Motor does not run

Perform Actuator Motor Test

230 and 630 Chair Base Actuator Motor Testing and Repair

1.Tag, then disconnect base actuator wires J1 and J2.

2.Place meter probes on actuator wires. Check meter reading.

Meter Reading

Status

Required Action

1 to 10 Ω

Thumbs up

Actuator motor OK, Perform Motor Ground Test

OL or less than 1 Ω

Thumbs down

Replace motor

230 and 630 Chair Base Actuator Motor Testing and Repair

1.Place one meter probe on actuator wire J1. Place other meter probe on PC board ground wire. Check meter reading. Repeat for J2.

Meter Reading

Status

Required Action

OL or more than 1 M Ω

 Thumbs up

Motor harness OK, Perform PC Board Test

Less than 1 Ω

Thumbs down

Replace motor

230 and 630 Chair Base Actuator PC Board Testing and Repair

1.Move Back section so that it is approximately halfway between its maximum and minimum positions.

230 and 630 Chair Base Actuator PC Board Testing and Repair

2.This test cannot be performed if either base limit switch is tripped. If necessary, remove switch bracket. Switch wires must remain connected.

230 and 630 Chair Base Actuator PC Board Testing and Repair

3.Disconnect base actuator wires from J1 and J2.

4.Move blue wire from J3 to J1. Move brown wire from J4 to J2.

Equipment Alert

The back limit switches will not stop movement during this test. Do not run past max. / min. positions.

5.Press and hold Base Up button on the hand or foot control for 5 seconds. Does back section move up briefly, then stop and beep? If Yes, go to Step 6. If No, replace PC Board.

6.Press and hold Base Down button on the hand or foot control for 5 seconds. Does back section move down briefly, then stop and beep? If Yes, PC Board is OK. If No, replace PC Board.

Remove and replace cable ties and wire clamps as necessary.

230 and 630 Chair Base Motor / Motor Coupler Testing and Repair

1.Raise base as high as possible.

2.Disconnect base actuator wires from choke harness. Disconnect ground wire.

3.Remove two nuts, motor, gasket, and coupler.

1.Install coupler, gasket, and motor. Secure with two nuts.

2.Connect actuator wires to choke harness, white to white, black to black. Connect ground wire.

230 and 630 Chair Base Actuator Testing and Repair

1.Run Base Up function to maximum height.

2.Install the Stop Bolt, included w/actuator kit.

Caution

The gas springs may support the full weight of the chair, but the stop bolt is still required to ensure safety.

230 and 630 Chair Base Actuator Testing and Repair

3.Disconnect base actuator wires from choke harness. Disconnect ground wire.

Remove cable ties and wire clamps as necessary.

4.Remove retaining ring. Loosen set screw.

5.Manually rotate the collar and block to the bottom of the actuator shaft.

6.Remove retainer plate and actuator.

1.Insert actuator shaft thru hole. Position actuator with bottom pin in slot.

2.Manually rotate the collar and block to the top of the actuator shaft.

3.Push chair top down, until top of collar sticks thru cross bar.

4.Install retaining ring. Tighten set screw.

5.Install retainer plate and secure with screws.

230 and 630 Chair Base Actuator Testing and Repair

6.Connect actuator wires to choke harness, white to white and black to black. Connect ground wire.

Replace all cable ties and wire clamps. Raise chair and remove stop bolt.