1979-06-20 Regular Meeting - Laserfiche WebLink

Browse Search

USCH, HUTC,HISC~& ASSOCIATE' S, INCA CpNiUL71NGlf~(.II,LLIIS tt07 ~LECTWOOD ORIVE • BAVTOWN. TExAi 77520 • PHONC (71J1 429.02tJ aOt1 iAN JACIN70, iU1TC t00 • HOULTpN, TEXA6 77004 • (7tJ) 62J.2JG7 June 19, 1979 "- _ " City of La Porte P. 0. Box 1115 La Porte, TX 77571 ATTN: Mr. Stan Sherwood RE: PUMP PROBLEM AT MUNICIPAL SWIMMING POOL Subsequent to the recent repairs to the referenced facility, some other problems have developed which, in our opinion, are unrelated to the repairs. One of these problems is the introduction of air into the filtration system causing loss of circulation. This can only be caused by there being a hole some- where in the suction line to the pump, that is between the main drain/skimmer lines and the pump case itself. By plugging the main drain and shutting the • skimmer valves it can be determined if there is a leak in the main drain line. If not the skimmer valves can be opened one at a time to see if they leak. On taro occasions the plumbing above ground in the pump house has proved to be at fault and both times the repairs have held up for only a few days and then the air problem recurs. The other problem is a seeming inability of the pump to be self priming. Although I have not personally witnessed the occurrence, they apparently at times -•ri 11 not 1 i ft ~•rater the one foot height required for priming. If there is a significant air leak in the suction lines, this could cause the lack of self priming. Another reason for not being self priming would be extensive wear in the pump, specifically at the wear rings. This cannot be determined without taking the pump down and having a skilled mechanic check the internals. I understand the pump is 20 years old and as such unless it has been maintained on a regular basis it would very likely now be in need of repair or replace- r,ent. Installation of a positive check valve in the suction line might help the priming problem, but a pump in good condition should not need this. If rre can be of further help, please let us know. fours trul ~ . ~ . ames P. Hutchison & David A. Corbin JPH/jm