Lubrication Schedule - Pentair HYPRO Small Twin 5300C-X Series Installation, Operation, Repair And Parts Manual

Piston and plunger pumps

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Compound Gauge (Optional)

The pump should not be subjected to high suction line vacu-

ums. To check on this, install a compound gauge at pump

inlet. For ultimate performance and life, the vacuum should be

limited to 5 inches of mercury. High vacuum conditions may

cause premature product failure and void warranty.

Pulsation Dampener

This device absorbs the shock and smooths out the pump dis-

charge pulsations, providing smoother operation. For the

proper operation of many unloader valves, the pulsation damp-

ener should be installed on the discharge side downstream

from the unloader valve. However, for maximum system pro-

tection, the pulsation dampener may be installed upstream

Priming

If the liquid is below level of the pump, some means

should be provided in installation to prime pump, such

as a foot valve or check valve to hold prime. Keep suc-

tion lift to minimum and avoid unnecessary bends in the

suction line. Before starting pump, make sure air bleed-

er valve or spray gun is open, or unloader valve is

adjusted to its lowest pressure. After starting pump,

open and close gun several times if necessary to aid

priming the pump. If pump does not prime within a few

seconds, stop motor and inspect installation for suction

line leaks or obstructions. Make sure that strainer is not

clogged. Be sure that suction line is not obstructed,

kinked or blocked.

If the pump is to operate hours at a time, check fre-

quently for:

1. Adequate liquid supply. Pump must not run dry for

more than 30 seconds.

2. Temperature rise. Overheating is harmful to bear-

ings and piston cups.

NOTE: Models 53702 and 53703 Inlet Requirements:

Pressure feed 20 to 100 psi.

Care of Pump

Your pump will last longer and give best performance

when properly taken care of. Proper pump care

depends on the liquid being pumped and when pump

will be used again. In a normal car wash or detergent

cleaning installation (where each application is followed

by a clear water rinse), the pump will be kept clean.

After each use, flush pump with a neutralizing solution

for the liquid just pumped. Follow with a clear water

rinse. This is especially important for corrosive chemi-

cals. Then flush out pump with a 50% solution of auto-

motive ethylene glycol-type radiator antifreeze contain-

ing a rust inhibitor.

from the unloader valve, provided the unloader valve will func-

tion properly. The dampener can be mounted vertically or

horizontally.

Pressure Regulator

Use a pressure regulator to limit incoming pressure to 20 psi

when equipped with a suction side injector. Volume, pressure

and horsepower figures in pump performance tables do not

apply when incoming pressure exceeds 40 psi.

Pressure Gauge/Dampener

Use gauge capable of reading double the pump working pres-

sure. Use a silicone-filled gauge or a gauge dampener to pro-

tect the gauge needle against pressure surges and provide

easier reading.

Operation

While this flushing is not absolutely necessary for short

periods of idleness (as overnight), it is good practice to

clean the pump after each use to prevent deposits from

forming and damaging the pump. The antifreeze not

only coats the interior of the pump with an inhibitor, but

acts as a lubricant as well, keeping valves from sticking

- and protecting against any remaining moisture freez-

ing in cold weather.

For infrequent use and before long periods of storage,

drain pump thoroughly. Open any drain plugs, remove

suction hose from liquid, and run pump "dry" from 0 to

30 seconds (not longer). Once again, a rust inhibitor

should be injected into the pump before both ports are

plugged and the pump is stored. Then, plug both ports

to keep out air until pump is used again.