Epiroc SB 1102, Safety And Operating Instructions Manual

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Safety and operating instructions
16 © Construction Tools PC AB | 9800 1273 01 | 2020-04-03
Original Instructions
6. After mounting the breaker, carefully extend and re-
tract the bucket cylinder to its full extent in each di-
rection. It is important that the cylinder can be fully
extended and retracted without any difficulty.
5.4 Pressure adjustment
A B
Max operating pres-
sure, bar (psi) Normal operating
pressure, bar (psi)
SB 702 170 (2466) 150 - 170
(2176 - 2466)
SB 1102 180 (2611) 160 - 180
(2321 - 2611)
The hydraulic breaker is equipped with a pressure relief
valve which secures the breaker. The operating pressure
of the machine is checked with a pressure gauge and
adjusted while operating the hydraulic breaker.
n
If the operating pressure is more than (A) the pres-
sure must be decreased. Reduce the oil flow from the
carrier until the pressure is down to (A). This adjust-
ment is important to ensure that the built in pressure
relief valve in the breaker does not open and leak oil
back to the tank and create heating problems.
n
If the operating pressure is between (B), normally no
adjustment is needed.
n
If the carrier's oil flow is too low to retain an accept-
able operating pressure the restrictor in the breaker
needs to be changed. See flow diagrams in "Techni-
cal data" to choose the best restrictor for your appli-
cation.
Position the hydraulic breaker vertically towards solid
bedrock or similar to adjust the pressure using a pres-
sure gauge.
5.5 Water flushing
The hydraulic breaker is prepared for water flushing, this
function is to bind the dust when performing demolition
operations.
When connecting water flushing the plug in the front of
the breaker must be exchanged with a water nozzle. See
the Spare parts list for ordering a new water nozzle.
Use a ¼ in. hydraulic hose with a JIC connection as a
proper water hose. Contact your nearest authorised
workshop for further instructions.
NOTICE It is recommended to use water flushing to re-
duce the wear on the hydraulic breaker during tunnel
and dust-intensive applications.
5.6 Working tool
5.6.1 Selecting the right working tool
5.6.1.1 Conical moil point
• Very good penetra-
tion
• Regular spread of
wedge action
• No torsion effect
5.6.1.2 Chisels and spades
• Very good spread of
wedge action
• Good penetration
• Torsion effect