Troubleshooting And Actions For Power Sprayer - Maruyama MS315 Mode D'emploi

・"Troubleshooting and Actions for Power Sprayer" lists conditions that may occur and the actions to
be taken. Should any failure occur, see the list and take the proper action. If you do not know the
cause or have any question, please contact your MARUYAMA service dealer.
1. Model
2. Serial No.
3. Failure description (what resulted in what how by doing what)
Detail these matters.
For ◎ , ask your MARUYAMA service dealer for adjustment or repair.
WARNING
Do not remove the cap on the top of the pressure control valve grip and adjust the screw. A
pressure higher than specified may occur, the machine may be damaged, and personal injury
may occur. Therefore, never take this action.
State
Transmission
To the water
intake port
(1)
No suction
or low
Water intake
suction
and
pressurizing
part (cylinder)
Pressure
control
Water intake and
pressurizing part
(2)
Pressure
Pressure
does not
control
increase

Troubleshooting and Actions for Power Sprayer

Cause
Belt slip
Suction clogged with dust / dirt
Suction hose damaged/bent
Water intake connection packing failure
Connection error
Too long water intake hose
Too large water intake pump head
Water intake valve/discharge valve clogged with dust or stuck
Water intake valve/discharge valve assembly error
Water intake valve/discharge valve damaged or worn out
Discharge valve spring broken
Piston packing damaged
O-ring damaged
Seal packing damaged
Pressure control valve handle in the pressurizing state
Pressure control stuck in position
Insufficient water intake volume
Pressure control valve ball/ball seat damaged
Pressure control valve rod error
Pressure control valve spring cylinder error
Pressure control valve spring damaged/degraded
Action
Adjust/replace
Clean
Repair/replace
Repair/replace
Connect correctly
Replace
Decrease depth
Clean
◎
Assemble correctly
◎
Correct/replace
◎
Replace
◎
Replace
◎
Replace
◎
Replace
◎
Move the handle to
the start position
Disassemble/clean
◎
See (1)
Replace
◎
Adjust/replace
◎
Repair/replace
◎
Replace
◎
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