Table of Contents
Advertisement
SERVICE
,I
WARNING
To
reduce
the
risk
of
serious
bodily
injury,
in-
cluding
injection
or
injury
from
moving
parts,
always
follow
the
Pressure Relief Procedure
on
page
5 before
inspecting,
removing,
cleaning,
or
repairing
any part
of the pump
or system.
NfVER
operate
the pump
with
the air motor
shield
removed
to
reduce
the
risk
of
injuring
or am-
putating
fingers.
NOTE:
Check
all possible
problems
and
solutions
before
disassembling
the pump.
TROUBLESHOOTING
CHART
PROBLEM
Pump fails to operate
CAUSE
SOLUTION
1
Exhausted
fluid supply
Refill
Restricted
line or inadequate
air supply
Clear; see TECHNICAL
DATA on back page
Insufficient
air pressure;
closed or clogged
Open; clean
air valves, etc.
Obstructed
fluid hose or gun
Clear*
Dried material
built up on displacement
rod
Clean; see SERVICE
Dirty or worn air motor
parts
Clean; service (see 306938)
Pump operates,
but output
low on
Exhausted
fluid supply
Refill
both strokes
Restricted
line or inadequate
air supply
Insufficient
air pressure;
closed or clogged
air valves, etc.
Clear; see TECHNICAL
DATA on back page
Open; clean
Obstructed
fluid hose or gun
Open or worn
bleeder valve
Air leaking into fluid pressure
chamber
of ram
Clear*
Close; replace
Check ram plate seal, etc.
Material
too heavy for pump to prime
Use bleeder valve; see OPERATION;
use
ram units
Worn
throat
packings
in displacement
pump
Clear; service
Pump operates,
but output
low on
down
stroke
Pump operates,
but output
low on
up stroke
Material
too heavy for pump to prime
Use bleeder valve; see OPERATION;
use
ram units
Held open or worn intake valve
Clear; service
Held open or worn
piston valve or packings
Clear; service
Erratic or accelerated
pump
operation
Exhausted
fluid supply
Material too heavy for pump to prime
Refill
Use bleeder valve; see OPERATION;
use
ram units
Held open or worn piston valve or packings
Clear; service
Held open or worn intake valve
Clear; service
Worn throat
packings
in displacement
pump
Clear; service
*Follow
the
Pressure Relief Procedure
on page 5; disconnect
the fluid hose. If the pumps starts when the air is turned on, the hose or
spray gun or dispensing
valve is clogged.
6
306-970
Advertisement
Table of Contents
