Troubleshooting - Milton Roy Roytronic A Series Instruction Manual

6.0 Troubleshooting

PROBLEM
Pump Will Not Prime
Pump Loses Prime
POSSIBLE CAUSE
1. Pump not turned on or plugged in.
2. Output dials not set properly.
3. Foot Valve not in vertical position on
bottom of tank.
4. Pump suction lift too high.
5. Suction tubing is curved or coiled in
tank.
6. Fittings are over tightened.
7. Air trap in suction valve tubing.
8. Too much pressure at discharge.
(Pumps without multi-function valve.)
1. Solution container ran dry.
2. Foot Valve is not in a vertical
position on the bottom of the tank.
3. Pump suction lift is too high.
4. Suction tubing is curved or coiled
in tank.
5. Fittings are over tightened.
6. Air trap in suction valve tubing.
7. Air leak on suction side.
TROUBLESHOOTING
SOLUTION
1. Turn on pump/plug in pump.
2. Always prime pump with speed and
stroke at 100%.
3. Foot Valve must be vertical (see Foot
Valve Installation, Section 3.7).
4. Maximum suction lift is 5 ft (1.5 m).
Pumps with High Viscosity Liquid
Handling Assemblies require flooded
suction.
5. Suction tubing must be vertical. Use
LMI ceramic weight supplied with pump
(see Section 3.7).
6. Do not overtighten fittings. This causes
seal rings to distort and not seat prop-
erly which causes pump to leak back
or lose prime.
7. Suction tubing should be as vertical as
possible. AVOID FALSE FLOODED
SUCTION! (see Section 3.2.1).
8. Shut off valves in pressurized line.
Disconnect tubing at injection check
valve (see Priming Section 4.2). When
pump is primed, reconnect discharge
tubing.
1. Refill container with solution and reprime
(see Section 4.2).
2. Foot Valve must be vertical (see Foot
Valve Installation, Section 3.7).
3. Maximum suction lift is 5 ft (1.5 m).
Pumps with High Viscosity Liquid
Handling Assemblies require flooded
suction.
4. Suction tubing must be vertical. Use
LMI ceramic weight supplied with pump
(see Section 3.7).
5. DO NOT OVERTIgHTEN FITTINgS.
This causes seal rings to distort and
not seat properly which caused pump
to leak back or lose prime.
6. Suction tubing should be as vertical
as possible. AVOID FALSE FLOODED
SUCTION! (see Section 3.2.1).
7. Check for pinholes, cracks. Replace if
necessary.
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