Pulsafeeder PULSAR 25HL User Manual

30
Specifications.
2. Check valves worn or dirty.
Clean, replace if damaged.
3. Hydraulic bypass valve
operating each stroke.
Refer to Hydraulic Bypass Valve.
4. Calibration system error.
Evaluate and correct.
5. Product viscosity too high.
Lower viscosity by increasing product
temperature. Increase pump and/or piping
size.
6. Product cavitating.
Increase suction pressure. Cool product as
necessary.
7. Piston seal worn or damaged
by contamination.
Inspect and replace if necessary, refer to
Piston Seal.
8. Process pressure relief valve
leaking or relieving
Repair, adjust or replace
Delivery gradually drops.
1. Check valve leakage.
Clean, replace if damaged.
2. Leak in suction line.
Locate and correct.
3. Strainer fouled.
Clean or replace screen.
4. Product change.
Check viscosity.
5. Bypass leakage.
Correct for bypass valve leakage.
6. Piston seal worn or damaged
by contamination.
Inspect and replace if necessary, refer to
Piston Seal.
7. Supply tank vent plugged.
Unplug vent.
Delivery erratic.
1. Leak in suction line.
Locate and correct.
2. Product cavitating.
Increase suction pressure.
3. Entrapped air or gas in
product.
Consult factory for suggested venting.
4. Motor speed erratic.
Check voltage and frequency.
5. Fouled check valves.
Clean, replace if necessary.
Delivery higher than
rated.
1. Suction pressure higher than
discharge pressure.
Install backpressure valve or consult factory
for piping recommendations.
2. Back pressure valve set too
low.
Increase setting.
3. Back pressure valve leaks.
Repair, clean, or replace.
4. Calibration error
Review calculations
DIFFICULTY
PROBABLE CAUSE
REMEDY
Pump loses hydraulic
oil.
1. Diaphragm ruptured.
Replace.
2. Leaky seal.
Replace.
3. Cover gasket leaks.
Replace or retighten.
4. Pump head gasket leaks.
Replace - tighten pump head bolts.
Apply sealing compound.
5. Pump head overfilled.
Remove excess oil.
Air bleeds continuously
from PTP (automatic
bleed valve)
1. Hydraulic oil level low.
Refill to correct level.
2. Hydraulic bypass valve
operating each stroke.
Refer to Hydraulic Bypass Valve.
3. Suction pressure too low.
Increase pressure.
4. Breakdown of oil –
temperature high.
Change oil type, consult factory.
Noisy gearing, knocking
1. Discharge pressure too high.
Reduce pressure.
2. Water hammer.
Install PULSAtrol.
3. Hydraulic bypass valve set too
high.
Readjust (refer to Hydraulic Bypass Valve).
4. Stroke length at partial setting.
Nondestructive knocking is characteristic of
lost motion pumps.

Pulsafeeder PULSAR 25HL Specifications

General

Brand	Pulsafeeder
Model	PULSAR 25HL
Category	Water Pump
Language	English