MARUZEN KOGYO BH221, Руководство по эксплуатации

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17
Symptoms Causes Countermeasures
Grip the control lever but does not start 1. Power source is off (Switch lever is
not in ON position)
2. Hoses are not connected
3. Couplers are not connected properly
4. Relief valve pressure is set too low
5.
Damage of control lever
6. Control lever is not functioning
7. High pressure side and oil return
side was connected inversely
1. Start the power source (Turn the
switch lever to On position)
2. Connect hoses
3. Check out if all the couplers have
been connected properly
4. Adjust pressure to 140
～
210kgf/
㎠
(13.7
～
20.6MPa) *
5. Replace a new control lever *
6. Disassemble breaker, clean and
remove dirt and dust between
control lever and valve body *
7. High pressure hoses is connected to
the upper side of the breaker
Functioning but weak hammering or low
hammering speed 1. Low rate of oil flow from power
source
2. Pressure in relief valve in power
source is set too low
3. Control valve does not function
properly
4. Back pressure is too high
1. Turn the engine rotation rate up and
increase the rate of oil flow (Adjust
oil flow to the necessary rate)
2. Adjust pressure to the range of 140
～
210kgf/
㎠
(13.7
～
20.6MPa) *
3. Remove and clean the joint of control
lever and valve body *
4. Use bigger Diameter hose for return
side
Hammering in normal speed, but week
hammering
1. Low accumulator gas pressure
2. Damage of accumulator diaphragm
1. Refill Nitrogen gas
40kgf/
㎠ (3.9MPa) *
2. Replace diaphragm *
Strong hammering and in high speed 1. High rate of oil flow 1. Turn the engine rotation rate down
to decrease the rate of oil flow
TROUBLE SHOOTING