Midmark European Assistant's Unit Installation guide

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003-2290-99 Rev. D (4/4/13)

European Assistant’s Unit: Rear Mounted Installation

Note

The rear mounted European Assistant’s Unit can be mounted on an Elevance™ console or LR model chair.

Switch

Bracket

Language of origin: English

Upper Pivot

Cover

Step 3: Remove one side then the other of

the lower pivot cover from the bracket

shoulder bolts and pins.

Step 2: Remove two screws and the upper pivot cover.

Step 4: Remove two screws from the bottom of

the switch bracket and allow bracket to

rotate down, out of the way.

Equipment Alert

Tap a lift arm or lower pivot cover three times to raise

the chair to the pre-programmed “home” position; a

convenient height for installation or patient access.

The chair beeps until it reaches the home position.

Upper Lift Arm Cover

Lower Lift Arm Cover

Lower Pivot Cover

Lower Pivot

Cover

Step 1: Position equipment.

A) Raise chair to a comfortable working height.

WARNING

Always disconnect power before removing covers.

Failure to do so may result in personal injury.

B) Disconnect power.

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DA2418i

Mounting Pin

Step 5: Push in clip with screwdriver to release clip on each side.

Lift up to remove the upper lift arm cover.

Note: Upper lift arm cover has clips that fit over a dowel rod on front of the chair.

Upper Lift

Arm Cover

Step 6: Remove lower lift arm cover by working one side at a

time, moving cover to the side and back to free it from

mounting pins.

Lower Lift

Arm Cover

Note Only the bottom half of the chair is shown in illustrations for simplicity and focus on required tasks.

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Equipment Alert

Have an assistant support the mount arm and

steady all pivot points to prevent damage to the

equipment.

Set Screw

Adjustment

Step 7: Mount the rear assistant’s unit assembly on the chair pivot using four hex head screws and washers. Do not tighten hex head screws fully.

Step 8: Adjust four set screws to level

the assembly horizontally

Step 9: Level vertically by lifting either side

of the assembly (mounting plate)

and tightening the hex screws.

Set Screws

(4)

Hex Head

Screws (4)

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Equipment Alert

If the chair has a console, you will have to

cut the vacuum tubing routed to the console

and connect it to the vacuum tubing going to

the rear mounted assistant’s unit.

Bottom

Plate

1/8" Air - yellow

1/8" Water - blue

Optional Curing

Light (Red & Black)

3/4" Vacuum

Tubing

Ground

Wires

Bail Wire

Holder

Vacuum Power

Relay Harness

LIN Coupler

LIN Wire

From Chair

Note If the chair has a console, disconnect LIN wire labeled

“To Console” from LIN coupler and connect the LIN

wire from Assistant’s unit.

Step 10: Connect tubing and wiring harnesses.

A) Remove bottom plate (two screws).

B) Connect like colored tubing and mating harness

connectors.

C) Adhere LIN coupler inside chair frame cavity with velcro

strips.

D) Connect LIN lines to coupler box.

Caution

Connect ground wire to ensure system ground continuity.

Failure to do so may result in electric shock.

E) Connect ground wires to chair frame.

F) Connect the vacuum power to the relay harness.

G) Install bottom plate (two screws).

Note: Keep all connections above the bail wire holder. Use two or more

ties to bundle wiring and tubing together and strapped to the

chair frame.

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4

0

60

8

0

1

0

20

0

1

2

3

5

6

7

4

0

Step 11: Remove J-box lid. Connect relay harness to the vacuum power relay box (located in the installation hardware kit).

A) Have an electrician connect facility power to the vacuum relay box and place relay box inside the J-box.

B) Connect tubing to facility air and water supplies as shown.

Step 12: If no other components are to be installed, finish installation by installing covers.

A) Install J-box lid to cover all tubing and wiring connections.

B) Install console side covers. (Refer to Step 1.)

Note: Be careful not to pinch or kink tubing or wires when installing covers.

Vacuum

Relay

Equipment Alert

Reference product specifications in

the European Assistant’s Unit User

Guide for electrical requirements for

the vacuum.

Facility Power

for Vacuum

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Switch

Bracket

Step 13: Secure wiring and tubing.

A) Rotate switch bracket up to pivot and install two screws.

B) Install HVE instruments.

Upper Pivot Cover

Step 14: Install covers.

A) Install lower pivot cover (slip slotted holes over shoulder

bolts and hooks over pins on switch bracket).

B) Install upper pivot cover (two screws in chair pivot).

C) Install lift arm covers (reverse Steps 5 and 6).

Lower Pivot Cover

HVE Instrument

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Installation Checklist

To Adjust drag on pivot points...

Tighten or loosen the set screw near the desired pivot point to

modify the pivot’s drag.

DA2424i

Mount Arm

pivot points

Allen wrench

Test Verify the following:



1 Mount arm and European assistant’s unit are level.

2

Mount arm and European assistant’s unit rotate and move

easily.

3

Mount arm stays where placed without drifting. Adjust drag

on pivot point is necessary.

4

Chair lift arm covers are in place and limit switches activate.

Chair raises when a cover is tapped three times.

5

Pivot covers are in place the limit switch activates to raise

chair when it is lowered into an obstruction.

7

Assistant’s instruments work properly. No wires or tubing

are pinched by covers or mountings.

8

Wipe components with a soft dry cloth to remove any dirt or

smudges.

Step 15: Connect chair to power supply and verify operation.

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Midmark European Assistant's Unit Installation guide

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