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4.4.2 PA-N 160 and PA-N 280 with manual positioning

The following steps are necessary to dismantle the actuator:

• Bring the manual positioning in zero position (turning safeguard (34) and marking on the column (20) at

the same level). To do so, first unlock drop-in pin (45).

• Push grooved clamping pin (31) out of the spindle (30).

• Unscrew hexagonal nuts (38) off the manual positioning columns (20) and remove the whole of the

upper part of the manual positioning.

• The further dismantling procedure is the same as chapter 4.4.1.

The following steps are necessary to install the actuator:

• Clean all parts and check them for damage. If necessary, re-work parts or replace with original parts.

• Installation is initially the same as the installation according to chapter 4.4.1.

• Place the upper part of the manual positioning (35 – 45) onto the columns (20) and fasten with the

hexagonal nuts (38).

• Loosen hexagonal screws (33) to the extend that the turning safeguard (34) on the threaded spindle (32)

can turns.

• Turn the threaded spindle (32) to the extend that the hole for the grooved clamping pin (31) in the

spindle (30) is visible through the slits in the threaded spindle (32).

Attention: The spindle (30) must not be twisted, as otherwise damage to the membrane may occur

(4).

• Press grooved clamping pin (31) into the spindle (30), so that it evenly protrudes from the threaded

spindle (32).

• Tighten hexagonal nuts (33) with 20 Nm to tighten the turning safeguard (34).

5 Commissioning & Maintenance

5.1 Commissioning

If the actuator is equipped with a manual positioning, it must be brought into zero position (turning safeguard

(34) and marking on the column (20) at the same level). To do so, unlock drop-in pin (45) and turn the

manual wheel (42). If the suitable position is reached, the drop-in pin (45) engages again.

To ensure faultless operation, the control air necessary for operation should be prepared by a maintenance

unit. If the actuator is operated at temperatures blow zero, dry control air must be used.

HORA PA-N 160 User Manual

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