Huge Pump HP 10, Руководство пользователя

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H
P 10 PUMP USER’S MANUAL
Page22
FREQUENCY OF USE
The pump should be flushed after each application to prevent its
damage if the pump is used for the transfer of the fluid that contains
suspended particles that settle and harden in the course of time when
it is kept stand still.(Otherwise, product remaining in thepump
between uses could dry out orsettle out. This could cause
problemswith the diaphragms and check valvesat restart.) The pump
should be completely drained after every use in particular under
freezing temperatures.
PUMP PROBLEMS AND SOLUTIONS
PROBLEM: The pump fails to operate even the air is supplied.The
supplied air is directly exit through the exhaust filter.
SOLUTION: Check the air valve of the pump.The piston of the liner-
piston assembly of the air valve may be jammed.Disassembly the air
valve thenremove, clean and lubricate the piston of the liner-piston
assembly.Wipe off and lubricate the liner.Install the piston in the liner
and break in a while.Install the air valve back and start the pump.
PROBLEM: The pump operates but no flow is transferred.
SOLUTION: Check the valves of the pump.The valve plunger may be
jammed by the foreign matters.In such case, no transfer of the fluid is
possible.
PROBLEM: The pump is in operation, but the capacity of the fluid is
insufficient.
SOLUTION: There might be several reasons:
* The pump suction and discharge port sizes are not proper.In such
case, the air flow for the pump operation will be insufficient.
* The air flow is less than the required volumetric rate.It is likely that
the compressor falls short in supplying required air.
* The cross sectional area of the pump at the suction and discharge
ports might be contracted.
Any contraction of the pump’s suction and
discharge ports might cause a
drop in the real pump’s capacity.
PROBLEM: The pump transfers the fluid, but the flow is fluctuating.
SOLUTION: Check the pilot valve and air valve of the pump.
O-rings of the piston of the pilot valve may be worn out.If this is so,
replace the pilot valve.
* The piston in the air valve might be worn out.Disassemble the
piston and liner assembly of the air valve and lubricate before
reassembling.If the problem still persists, than replace the assembly
completely.
PROBLEM: There is excessive vibration in the pump during the fluid
transfer.
SOLUTION: There might be several reasons and solutions for that.
* High exit pressure of the pump and lack of rubber mountings on the
pump’s pedestals.
* Long discharge pipe and lack of compensators on the pipe installed
at specific intervals to prevent vibration.
* Use of flexible adaptors at the suction and discharge ports of the
pump