Carver RS A, Инструкция по установке, эксплуатации и обслуживанию

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RS Series – Multi-Stage, Ring Section Pumps January 2001
15
Table 9. Pumping Unit Troubleshooting
Symptom Immediate Action Probably Cause Corrective Action
Pump does not deliver
rated capacity 1. Stop driver. 1. Excessive system
pressure.
1. Check GPM and
head against design
conditions; pump
impeller may be too
small. Consult local
distributor or Carver
Pump Company.
2. Incomplete priming or
venting of pump or
piping
1. Prime pump and
piping again and
carefully vent.
3. Suction line or
strainer clogged.
1. Clean out suction line
or strainer.
4. Positive suction head
is too low.
1. Reduce the distance
from centerline of
pump to source of
liquid being pumped.
5. Valves are not fully
open.
1. Open valves and if
necessary, lock
valves open to
prevent accidental
closure.
6. Clogged impeller. 1. Dismantle pump and
clean impeller, if
necessary.
7. Reverse rotation. 1. Correct rotation is
clockwise when
viewed from driver
end.
8. Improperly installed
impeller.
1. Disassembly pump
and correctly axial
align impeller.
9. Excessive wear of
internal parts.
1. Disassemble pump
and replace worn
parts.
Leakage at case joints. 1. Stop driver. 1. Bolts not sufficiently
tightened.
1. Release the pressure
and tighten tie bolts
evenly.
2. O-rings damaged. 1. Replace o-rings.
Bearings run hot. 1. Stop driver. 1. Pump and driver
shafts are
misaligned.
1. Check coupling
alignment.
2. Check pipe strain.
2. Piping causes pump
to “warp”.
1. Ensure piping
transmits no stress to
pump. Alter piping
layout, if necessary.
Realign pump and
driver shafts.