- Published: Friday, 27 July 2012 01:14
- Written by Bruce Elliott
Client: Anderson Design Limited
Location: Wellington, New Zealand
Application: Artefact Case in Rotorua Museum of Art and HIstory
Brief: Constructed in Wellington by Anderson Design, the Artefact Case was originally specified in July 2011 using a set of competitors steel pressed drawer slides. Having fitted them in the workshop they worked fine, but as is the case, when installed at the museum, things started to go wrong. Concern began when it was noted that the force required to open and close the draws was too much and due to the delicate nature of the fabrics and cloaks, would have meant too much shock and vibration, which would have damaged the ”taonga’ (Cultural treasures).
Anderson Design, stripped and cleaned the offending slides, but the problem was not solved and although the slide company was helpful, the situation didn’t improve and time was running out.
It was only after an internet search that Anderson Design found Integrated Emergency Equipment’s stock of Chambrelan’s slides and within 24 hours Chambrelan UK and Emergency Equipment identified the problem and offered a solution.
Solution: Within seven days of placing an order for a set of sample RA7 heavy duty slides, coming in at a massive 1500 mm and roughly weighing 24 kilos per pair they were in the workshop and ready for a test run. With the drawer and glass coming in at 95 kilos, the Anderson Design Team, wanted to make 100% sure the slides would operate properly so added another 95 kilos by climbing on board and having a jump about!
After testing the pull out load, using a spring balance, the team were delighted to find that the traction load had been reduced from 17.5 kilos – using the old pair of slides – down to a mere 5.5 kilos using Chambrelan’s slides. In addition due to the nature of material contained in the cabinet the draws were fitted with Festo pneumatic rams, with adjusters and dust filters, allowing the draws to be closed softly and safely. The ‘soft close’ action was enabled by fitting a high energy magnet to the end of the ram, which was picked up by a metal angle on the outward cycle of the drawer, which in turn compressed the ram on the inward cycle providing the ‘soft close’ instead of a jolting stop.
Feedback: “From a standing start we were able to source and trial Chambrelans’ RA7, when we realised they could do the job, we ordered. Thanks to Bruce Elliott and the Chambrelan UK team who helped us complete the project.” Ian Anderson, Anderson Design Limited, New Zealand.