Rola-Chem Pro Series Pump - Manual (Page 5)

Rola-Chem Pro Series Pump PN 522105 2013/11/26 Page: 5 of 8
Crystal buildup is seldom a problem with ROLA-CHEM pumps. However, it may be necessary to flush the pump
hose and tubing. Use plain water or a weak solution of muriatic acid (1/2 pint muriatic acid to one gallon of
water).
CAUTION !: Always add acid to water; wear protective clothing, gloves, and safety glasses.
CAUTION !: System pressure must be removed prior to releasing the tubing to prevent backflow. A check valve
may be used at the point of injection to prevent backflow, then the tubing assembly can be disconnected at its
connection to the check valve and it will not be necessary to plug the injection fitting hole.
Additional preventative maintenance may be required in harsh environments. Strong chemicals and chemical
vapors may cause corrosion of metal components. Inspect pumps for corrosion to exposed metal components.
For pumps utilizing timer functions, replacement of the timer/pot assembly is recommended after 5 years.
6. CHEMICAL FEED PUMP SIZE GUIDE:
WARNING ! FAILURE TO USE PROPER SIZE FEEDER MAY RESULT IN INJURY.
NOTE: ORP/pH controllers will not function properly with over or undersized feeder.
SPA POOL CHLORINE
PUMP
ACID
PUMP
Capacity, Gallons Capacity, Gallons
500-2,500 2,500-5,000 RC 252
(0.9 GPD)
SAME**
2,500-25,000 5,000-65,000 RC 25/53
(12GPD) SAME**
65,000-200,000 RC 103
(38 GPD)
RC 25/53
(12 GPD)
180,000-400,000 RC 503
(77 GPD)
RC 25/53
(12 GPD)
Sizing chart is only a guide and is based on Rola-Chem or equivalent pumps using 10.5+ % Sodium Hypochlorite
and Muriatic strength Hydrochloric Acid.
When feeding acid diluted 9:1, the acid pump may be the same size as the chlorine (NaHOCl) pump.
**Where ‘SAME’ is specified, dilute acid 4:1 to 9:1.
Warning! Only add acid to water (i.e. fill tank with 4 gallons of water then add gallon of acid).
Consider diluting chemicals for small bodies of water. Actual pump size may vary when diluting chemicals, size
pumps based on dilution ratio and available pump sizes.
Pump size must be in compliance with local health codes. When in doubt about pump size or if different brand
feed pumps are used, consult your supplier or Rola-Chem.
*RC103 pumps have been successfully used on pools up to 240,000 gallons (RC 503 pumps to 500,000
gallons).
Caution! Erosion feeders must also be sized to body of water, refer to appropriate sizing data from
feeder manufacturer.