HydraCARDs | <p>HydraCAD locks up when trying define a new sprinkler head. You have to CTRL+ALT+DEL to shut down Acad.</p>

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AutoCAD Based Sprinklers (Ribbon/Toolbar/Location)

Button: Insert Sprinkler Function: Head Block Definition

Description:

HydraCAD locks up when trying define a new sprinkler head. You have to CTRL+ALT+DEL to shut down Acad.

Cause:

User had multiple blue boxes for the same sprinkler head AND many were defined in both Metric and Imperial,

For example there were five (5) blue boxes for HEAD2, four were Imperial and 1 was metric.

Solution:

Delete ALL the blue boxes from the drawing.

1. Turn on and unlock the ACC1 layer.

2. Type PURGE at the command prompt, go to 'Find Non-Purgable Items', then scroll down to 'blkrdef1'

3. Click the 'select objects' icon to find them and select them all, then press the DELETE key to erase them.

4. Save the drawing, then redefine the sprinkler heads.

Updated: May 22, 2025, 5:45 p.m. Created: March 1, 2019, midnight