REED 00 C50SS, Manual, Page: 25 / 84

REED
00 MODEL:
C50SS
TRAILER CONCRETE PUMP
OPER.
PAGE 24
TROUBLESHOOTING TIPS - PUMPING & BLOCKAGE
•
A drop in volume can occur when pumping long distances or with stiff mixes as
compared with shorter lines and wetter mixes.
•
Water leaking from a connection can cause separation of the mix in the delivery line
and will eventually develop into a blockage at that point.
•
Avoid using damaged hoses with internal restrictions. They can cause blockage.
•
When using snap joint couplings with gaskets to join the hoses, be sure they are
washed and cleaned after completion of the job. We also suggest the couplings and
gaskets be dipped in water prior to use for easier installation.
•
Don't be alarmed by a slight pulsation of the delivery hose near the outlet. This is a
normal condition. However, excessive pulsation near the pump is normally due to
higher than average line pressure that may be caused by pumping stiff harsh mixes or
pumping extremely long distances. Using hose with a larger internal diameter will help
in reducing the line pressure.
•
Be alert to the fact that if the delivery system is blocked or the hose is kinked, the
pump could suddenly force out the blockage or straighten out the kink. This rapid
surge could cause the line to whip or move in such a manner that it may cause
INJURY .
•
When a blockage in the hose occurs, walk along the hose until you find the point of
trouble. The hose will be soft immediately past the blockage point. Elevate the hose
at that point with the blockage hanging down toward the free end. Shake the hose or
pound with a hammer until the blockage loosens and the material flows freely again.
•
DOWNHILL pumping involves some extra attention and can be difficult on some jobs.
The reason for this is that when the pumping operation is stopped the material can flow
slowly down the incline causing the hose to collapse. This can only result in a
blockage when pumping is resumed. Kinking off the hose at the discharge while the
pump is stopped can prevent this. Also the use of stiffer mixes when pumping downhill
will lessen the gravity flow.
•
When pumping over 40 feet vertically up the side of a structure, steel pipe should be
used and should be securely fastened as necessary to support the pipe column. Install
long radius 90º pipe sweeps at the top and bottom of the steel pipe delivery line. Also
use a short section 20 - 25 feet of hose off the pump discharge to take up the
pulsation. Use steel pipe for the balance.
REVISION: