LMI ROYTRONIC EXCEL AD Series Instruction Manual page 47

PROBLEM
1. Worn tubing ends.
2. Loose or cracked fitting.
Leakage at
tubing
3. Worn seal rings.
4. Solution attacking Liquid
Handling Assembly.
1. Pump's maximum pressure rating
is exceeded by injection pressure.
2. Worn Seal Rings.
Low Output
3. Ruptured LIQUIFRAM™.
or Failure to
4. Incorrect stroke length.
Pump
Against
Pressure
5. Tubing run on discharge may be
too long.
6. Clogged Foot Valve strainer.
1. Pump not turned on or
plugged in.
Failure to
2. EPU failure.
Run
3. Pulser failure.
1. Syphoning. (Pumping downhill
without a multi-function valve).
Excessive
Pump
2. Little or no pressure at injection
Output
point.
3. Excessive strokes per minute.
POSSIBLE CAUSE
Instruction Manual
SOLUTION
1. Cut about 1 in (25 mm) off tubing and then
replace as before.
2. Replace fitting if cracked. Carefully hand
tighten fittings. DO NOT USE PIPE WRENCH.
An additional 1/8 or 1/4 turn may be necessary.
3. Replace balls and seal rings(see Section 4.4).
4. Consult your local distributor for alternate
materials.
1. Injection pressure cannot exceed pump's
maximum pressure. See pump data plate.
2. Worn seal rings or cartridge valves may need
replacement (see Section 4.4).
3. Replace LIQUIFRAM™ (see Section 4.3).
4. Recalibrate Output (see Section 3.3.2).
5. Longer tubing runs may create frictional losses
sufficient to reduce pump's pressure rating
Consult factory for more information.
6. Remove Foot Valve strainer when pumping
slurries or when solution particles cause strainer
to clog.
1. Turn on or plug in pump.
2. Disassemble pump and measure resistance
across the EPU terminals. If this measures as
an open circuit then the EPU should be
replaced. (see Section 4.8).
3. The pulser should be replaced if EPU checks
out OK. Consult supplier or factory.
1. Move injection point to a pressurized location or
install an LMI ® 4-FV (see Section 2.4).
2. If pressure at injection point is less than
25 psi (1.7 Bar), an LMI
installed see Section 2.4).
3. Replace pulser or resistor. Consult factory.
® 4-FV should be
40