Maintenance and Modifications, cont’d

Replacing the Gas Lift

The gas lift that raises the HSA surface is rated for 100,000 opening and closing cycles. Replace the gas lift as follows:

 

 

 

 

 

Ensure that AC power is disconnected before

 

 

 

 

 

servicing the HSA unit.

 

 

 

When the HSA 400/402 is upside-down, the latch

 

CAUTION

 

 

 

 

 

 

may be ineffective. If the latch releases, the

 

 

 

 

 

enclosure will tip and could damage the flanged

 

 

 

 

 

edges. Keep a hand on the enclosure to keep it from

 

 

 

 

 

tipping.

1.

Remove the surface mount enclosure from the table. See

 

“Removing and Replacing the Enclosure”, steps 1 through

 

8. Place the enclosure upside-down on a horizontal

 

surface. To protect the finish, place the enclosure on a soft

 

cloth.

 

 

2.

Loosen the three Philips head screws that secure the gas

 

lift mounting plate in place (figure 3-6).

Slide plate back, then lift straight up.

Loosen (3) screws.

Figure 3-6 — Releasing the gas lift

3. Slide the gas lift mounting plate toward the center of the enclosure, releasing the mounting plate from the enclosure (figure 3-6).

4.

Turn the gas lift mounting plate counterclockwise until the

 

pivot nut on the plate comes free from the shaft of the gas

 

lift (figure 3-7).

 

 

Top Panel

Clevis

 

Bracket

 

 

Flange and

 

 

Top Panel

 

 

Assembly

 

 

Lower

 

 

Enclosure

 

Piston End

 

 

Gas Lift

 

 

Pivot Nut

Gas Lift

 

 

Mounting Plate

Figure 3-7 — Replacing the gas lift

 

5.

Turn the surface mount enclosure onto its back side and

 

open the top panel.

 

 

With the gas lift removed, the top panel must be

 

manually lifted.

 

6.

Remove and retain the 9/32" nut and bolt that secure the

 

gas lift to the top panel. Pull the gas lift out of the

 

enclosure.

 

7.

Insert the piston end of the replacement gas lift through

 

the hole in the bottom of the enclosure adjacent to the

 

latch, and secure the lift in the clevis on the top panel with

 

the nut and bolt that were removed in step 6.

8.

Thread the pivot nut on the gas lift mounting plate onto

 

the shaft of the gas lift and tighten it several turns.

9.

Firmly push the gas lift mounting plate into position on

 

the underside of the enclosure, engaging the three

 

mounting screws. Holding the plate in position, secure it

to the enclosure with the three screws that were loosened in step 2.

10. Reinstall the surface mount enclosure. See “Removing and Replacing the Enclosure”, steps 11 through 17.

3-8

HSA 400/402 Series • Maintenance and Modifications

HSA 400/402 Series • Maintenance and Modifications

3-9

Page 18
Image 18
Extron electronic When the HSA 400/402 is upside-down, the latch, May be ineffective. If the latch releases, Tipping

RGB 580xi AAP, HSA 402, HSA 400 specifications

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