Wednesday, November 29, 2000
DALLAS -- The challenge of balancing the chemistry in the smaller pools at the new aquatic center is plaguing city officials.
The center's pools are controlled by an extremely sensitive computer system run by a company called U.S. Filter in California.
Dallas has an open air storage tank and that means the city water has to be treated with ammonia. The sophisticated computer detects the ammonia as something dirty and keeps trying to clean the water by adding more chlorine before the water enters the pools.
The larger lap pool and leisure pool have a large enough volume of water that the chlorine levels are less of a problem than in the hot tub, therapy and wading pools.
"We won't operate these pools if they're out of balance," said City Manager Roger Jordan. "We let people know when they come in to use the pool if any of the pools are not available and people should call if they are planning any kind of big event."
Jordan met with representatives of U.S. Filter on Nov. 28 to explore solutions to the problem which Jordan said the company had not encountered with any of the other pools it operates.
"Tyco had a similar problem with the city's water in cleaning their circuit boards and they were able to find a solution," Jordan said.
An unrelated problem with the leisure pool has been fixed, Jordan said. Shortly before the center opened on Nov. 4, the finished surface of the leisure pool began separating from the underlying concrete surface. The pool was drained and a quick repair was made so the center could open as scheduled. The pool had to be drained again last week after the surface began to separate again.
"We think we have taken care of the problem this time," Parks and Recreation Director Al Knox said.
"We had to take off a layer of the underlying concrete and re-plaster the surface."
Jordan asked that people be patient while they are trying to work out the bugs in the complicated system.