Installation Instructions; System Connection - PROFLO PFX20 Instrucciones De Instalación, Operación Y Mantenimiento

Location -
Proper PROFLO Location
The PROFLO tank should be installed as close as possible to the pressure
switch. This will reduce the adverse effects of added friction loss and pressure
switch bouncing, and the difference in elevation between PROFLO and switch.
DANGER! EXPLOSION HAZARD. WHEN THE PROFLO
TANK HAS BEEN IN SERVICE AND A CHANGE TO A
HIGHER PRE-CHARGE PRESSURE IS NECESSARY DUE TO A REQUIRED CHANGE
IN THE PRESSURE SWITCH SETTING, FAILURE TO FOLLOW INSTRUCTIONS
BELOW CAN CAUSE A RUPTURE OR EXPLOSION, POSSIBLY CAUSING SERIOUS
OR FATAL PERSONAL INJURY, AND /OR PROPERTY DAMAGE .
• DO NOTADJUST ORADD PRESSURE IFTHERE HAS BEENA LOSS OFAIR.
• DO NOT ADJUST THE PRE-CHARGE PRESSURE IF THERE IS VISIBLE
EXTERIOR CORROSION.
• DO NOT ADJUST THE PRE-CHARGE PRESSURE IF THERE HAS BEEN
A REDUCTION OF THE PUMP CYCLE TIME OR THE PRE-CHARGE
PRESSURE COMPARED TO ITS INITIAL SETTING . THIS IS BECAUSE
REDUCTION IN PUMP CYCLE TIME CAN RESULT FROM LOSS OF TANK
AIR PRESSURE WHICH IN TURN CAN MEAN THERE MAY BE INTERNAL
CORROSION AND ANY RE-PRESSURIZATION OR ADDITIONAL PRESSURE
COULD RESULT IN RUPTURE OR EXPLOSION.
Adjusting Pre-charge -
Prior to Installation
PROFLO tanks are shipped with a standard pre-charge of 38 psig.
Step 1. Remove protective air valve cap
Step 2. Check pre-charge pressure (pressure should be + or - 10% of the
factory setting)
Step 3. Release or add air as necessary to make the pre-charge pressure 2
psig below the pressure switch pump cut-in setting. (Example, if you
have a PFX44 with a pre-charge of 38 psig, and you have a pressure
switch setting of 30/50 psig, adjust pre-charge of your PFX44 from
38 psig to 28 psig.)
Step 4. Replace protective air valve cap. Peel off backing of label and apply
over air valve cap.
Explosion
these instructions can cause a rupture
or explosion possibly causing serious or fatal injury, flooding,
and/or property damage.
13

INSTALLATION INSTRuCTIONS

Hazard. Failure to follow

System Connection

1. Locate the PROFLO tank in the final desired location.
2. Level as necessary.
3. To eliminate friction loss, do not reduce the pipe size from the pump to the
PROFLO.
Start Up -
Fine Tuning Procedures
Many times the actual pressure switch will vary from the standard pressure
range indicated. These variations could cause a momentary lag of water
delivery, as the pressure switch is not tuned to the PROFLO pre-charge
pressure.
1. Fill the system and PROFLO until pump cuts off.
2. Open one or more fixtures to drain the PROFLO.
3. If there is a momentary pause in the water flow from the time the PROFLO
is emptied and the pump starts, adjust pump cut-in setting clockwise
slightly (see figure 2).
4. Close fixtures and refill PROFLO to pump cut off. Check time to fill.
5. Open fixtures and see if pause in water is eliminated. If not, continue
adjusting pressure switch.
Adjusting Precharge After Installation
Step 1. Drain tank of all water. Check pre-charge pressure in the PROFLO
Tank.
Step 2. Release or add air as necessary to make the pre-charge pressure 2
psig below the pressure switch pump cut-in setting.
Figure 2
Electrocution Hazard
Live Terminals
Interrupt Power
Pressure Adjustment Clockwise
To Increase Cut-Out Pressure
Counter Clockwise To
Decrease Cut-Out Pressure
®