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308–507
7
SHUTDOWN, FLUSHING AND STORAGE
WARNING
Pressure
Relief Procedure
To reduce the risk of serious bodily injury ,
including
fluid injection
and splashing in the eyes,
or on the skin, always follow this procedure
whenever you stop spraying for more than 10
minutes, when shutting down, and before
checking
or repairing any part of the system.
1.
Engage the trigger safety latch.
2. T
urn the air supply of
f.
3.
Disconnect the air supply
.
4.
Shut of
f the water supply
.
5. Disengage
the trigger safety
latch and trigger
the
gun to relieve pressure,
and then engage
the
trigger safety latch again.
6. Before long–term (overnight) storage or
transporting
of the unit, disconnect the
water
supply,
and disconnect the air supply
.
1. If the pressure washer will be exposed to freezing
temperatures, drain all water out of the pump. If it
must be stored in freezing temperatures, flush the
unit with a 50% anti–freeze solution. Relieve
pressure.
Flush the pressure washer before using
it
again
to remove the anti–freeze.
CAUTION
If
water does freeze in the
pressure washer
, thaw
it
in a
warm room before trying to start it.
DO NOT
pour
hot water on or into the pump!
2. After each use, wipe all surfaces of the pressure
washer
with a clean, damp cloth.
3. Perform the appropriate maintenance. See
maintenance
chart.
MAINTENANCE
Observing regular maintenance intervals helps ensure
that you get maximum performance and life from the
pressure
washer
.
WARNING
To reduce the risk of serious bodily injury ,
including fluid injection, splashing in the eyes or
on the skin, or injury from moving parts, always
follow the Pressure Relief Procedure Warning
before
proceeding.
Interval What to do
Daily Clean
water inlet screen and filter
.
Lubricate
air motor (if there
is not automatic
oiling)
by placing 15 drops of light machine
oil in the pump air inlet.
Each 40
hours of
operation
Check that the packing nut is tight. T
ighten
snug. Overtightening will damage
packings. See the appropriate pump
Instruction-Parts List.
TROUBLESHOOTING CHART
WARNING
To
reduce the risk of serious bodily injury
, including fluid
injection, splashing in the eyes or on the skin, or injury
from
moving parts, always follow the
Pressure Relief Procedure W
arning
before proceeding.
Problem Cause Solution
Pump
does not
operate or no water
flow
Loose or broken pump parts.
Restricted line or inadequate air supply
.
Exhausted water supply
.
Clogged fluid hoses.
Fluid intake or piston valves need
adjustment.
Damaged air motor
.
Disassemble, check, repair.
Clear
, increase.
Refill.
Clean or replace.
Adjust.
See separate air motor Instruction Manual.
Pump operates but
output is low
Insuf
ficient air supply
.
Exhausted water supply
.
Obstructed gun or tip.
Damaged pump packings.
Piston or intake valve worn or held open.
Increase.
Refill.
Clear.
Replace.
Repair
. See separate pump Instruction Manual.
Frequent or
premature failure of
the packings
Running pump dry
.
Abrasive material in the fluid being pumped.
Inlet water temperature too high.
Overpressurizing pump or excessive cycle
rate.
Do not run pump without water
.
Install proper filtration on pump inlet plumbing.
Check water temperature; may not exceed 200
_F
Check inlet air pressure. Adjust regulator if
necessary.
Erratic or accelerated
operation
Exhausted water supply
.
Fluid intake or piston valve worn.
Refill.
Repair
. See separate pump Instruction Manual.