Troubleshooting - REMS Picus S1 Instruction Manual

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despite the reduction in feed pressure, the drive unit must be shut down and
the diamond-tipped annular bit freed manually (see 5.).
WARNING
Pull out the mains plug!
REMS Picus S2/3,5
Loosen the two screws (52) on the flange of the REMS Titan, insert REMS
Picus S2/3,5 in the guide (53). Hold the drive machine and tighten the screws
(52). Tighten the locking nut. Screw the selected diamond core drill crown to
the drive spindle (11) of the drive machine and tighten by hand with a slight
swing. There is no need to use an open-ended wrench for tightening. Switch
on drive machine with switch (21). Lock the switch in the pressed state by
pushing the orange button forward. Slowly advance the diamond core drilling
crown with the feed lever (4), and care fully tap the drill hole. Once the annular
bit has engaged all-round, the feed rate can be increased. If the drive unit is
stopped due to excessive feed pressure, or becomes blocked as a result of
resistance in the drilling gap, the multi-function elec tronic system reduces the
motor current – and thus the turning speed of the drive unit – to a minimum. The
drive unit does not shut down how ever. As the feed pressure is reduced, the
turning speed of the drive unit is increased once more. This procedure, even if
it is repea ted several times in succession, prevents damage to the drive unit. If
the motor remains stopped despite the reduction in feed pressure, the drive unit
must be shut down and the diamond-tipped annular bit freed manually (see 5.).
WARNING
Pull out the mains plug!
NOTICE
Always wet drilling for steel-reinforced concrete!
3.5. Wet-boring with drill upright
REMS Picus S1, REMS Picus S3 and REMS Picus SR
Secure the drill upright using one of the methods described in 3.3. Insert the
drill collar (13) of the drive unit into the mounting in the clamping angle (10),
and tighten the fillister head screw(s) (8) with an SW 6 hexa gon socket head
wrench. Screw the selected diamond core drilling crown onto the drive spindle
(11) of the drive unit, and lightly hand-tighten. There is no need to tighten it with
a wrench.
Connect the water supply (see 2.5.). Activate the drive unit at the switch (21).
Lock the switch in the pressed state by pushing the orange button forward (only
Picus S1 and Picus S3). In Picus SR the knob next to the switch (21) must be
pressed to lock the pressed switch (21). Slowly advance the diamond core
drilling crown with the feed lever, and – with the water supply at a minimum –
carefully tap the drill hole. Once the annular bit has engaged all-round, the feed
rate can be increased. Adjust the water pressure to a point where there is a
moderate, but constant, flow for water from the bore hole. Insufficient water
pressure (where the waste material flows out of the bore hole as thick sludge
rather than liquid) is as bad for the working efficiency and service life of the
diamond core drilling crown as is excessive water pressure, which causes
completely clear water to flow out.
DANGER
Ensure that no water is allowed to get into the drive unit motor during
operation. DANGER OF FATAL ACCIDENT!
If the drive unit is stopped due to excessive feed pressure, or becomes blocked
as a result of resistance in the drilling gap, the multi-function elec tronic system
reduces the motor current – and thus the turning speed of the drive unit – to a
minimum. The drive unit does not shut down how ever. As the feed pressure is
reduced, the turning speed of the drive unit is increased once more. This
procedure, even if it is repeated several times in succession, prevents damage
to the drive unit. If the motor remains stopped despite the reduction in feed
pressure, the drive unit must be shut down and the diamond-tipped annular bit
freed manually (see 5.).
WARNING
Pull out the mains plug!
REMS Picus S2/3,5
Loosen the two screws (52) on the flange of the REMS Titan, insert REMS
Picus S2/3,5 in the guide (53). Hold the drive machine and tighten the screws
(52). Tighten the locking nut. Screw the selected diamond core drill crown to
the drive spindle (11) of the drive machine and tighten by hand with a slight
swing. There is no need to use an open-ended wrench for tightening. Switch
on drive machine with switch (21). Lock the switch in the pressed state by
pushing the orange button forward. Slowly advance the diamond core drilling
crown with the feed lever (4), and care fully tap the drill hole. Once the annular
bit has engaged all-round, the feed rate can be increased. If the drive unit is
stopped due to excessive feed pressure, or becomes blocked as a result of
resistance in the drilling gap, the multi-function elec tronic system reduces the
motor current – and thus the turning speed of the drive unit – to a minimum.
The drive unit does not shut down how ever. As the feed pressure is reduced,
the turning speed of the drive unit is increased once more. This procedure,
even if it is repea ted several times in succession, prevents damage to the drive
unit. If the motor remains stopped despite the reduction in feed pressure, the
drive unit must be shut down and the diamond-tipped annular bit freed manu-
ally (see 5.).
WARNING
Pull out the mains plug!
3.6. Removal of the drilling core
NOTICE
When carrying out vertical drilling, e.g. in a ceiling, note that the drilling core
normally drops out as soon as the hole is complete! Take appropriate steps to
ensure that personal injury or material damage does not result.
If the drilling core remains hanging in the diamond core drilling crown after the
core-drilling operation is complete, the bit must be unscrewed from the drive
unit and the drilling core knocked out with a rod.
NOTICE
NEVER hit the casing of the drilling core with a metal item such as a hammer
or wrench in order to loosen the drilling core. This will cause the casing pipe
to become dented, which will make blocking of the drilling core even more likely
on future occasions. The diamond core drilling crown may then be rendered
unusable.
If the core-drilling operation does not penetrate fully, the drilling core can be
broken up, down to a depth of 1.5 x Ø, by inserting a tool such as a chisel into
the drilling gap. If the drilling core cannot be secured, use a tool such as a
hammer drill to make an angled hole into the drilling core, and insert a rod to
extract it.
3.7. Extending the diamond core drilling crown
If the stroke distance of the drill upright, or the useful drilling depth of the diamond
core drilling crown, is insufficient, an annular-bit extension (available as an
accessory) should be used. Start by drilling in as far as possible in the normal
way.
If the stroke distance of the drill upright, and boring depth within the usa ble
boring depth of the diamond core drilling crown, are insufficient, proceed as
follows:
WARNING
Unplug from the mains power supply! Do not pull the diamond core drilling
crown out of the core-drilling hole. Detach the diamond core drilling crown from
the drive unit (see 2.3.2.). Turn back the drive unit without the diamond core
drilling crown. Fit the annular-bit exten sion (50) between the diamond core
drilling crown and drive unit.
If the usable drilling depth of the diamond-tipped annular core is insufficient,
proceed as follows:
WARNING
Unplug from the mains power supply! Detach the diamond core drilling
crown from the drive unit (see 2.3.2.). Turn back the drive unit without the
diamond core drilling crown. Pull the diamond core drilling crown out of the
core-drilling hole. Break up the drilling core (see 3.6.), and remove it from the
core-drilling hole. Reinsert the diamond core drilling crown into the hole. Fit the
annular-bit extension (50) between the diamond core drilling crown and drive
unit.
4. Maintenance
DANGER
Pull out the mains plug before maintenance and repair work!
4.1. Maintenance
Carry out regular checks of the PRCD fault-current safety switch (see 3.). Keep
the drive unit and handles clean. When the drilling operation is complete, clean
the drill upright and annular bit with water. Blow out the ventilation opening of
the motor from time to time with a compressed-air hose. Keep the crown
connection thread on the drive unit and the connection thread on the diamond
core drilling crown clean and apply oil from time to time.
4.2. Inspection/Maintenance
DANGER
Pull out the mains plug before maintenance and repair work! This work
may only be performed by qualified personnel.
The motors of the REMS Picus S1, REMS Picus S3, REMS Picus S2/3,5 and
REMS Picus SR are fitted with carbon brushes. These are subject to wear, and
must be checked at regu lar intervals and replaced as required. We recommend
having the drive units inspected and maintained after every 250 operating
hours, or at least once a year, by an authorised REMS customer service provider.
WARNING
This is independent of any local rules that may apply with respect to the
operation of electrical equipment on construction sites.

5. Troubleshooting

WARNING
DO NOT switch the drive unit on and off in an attempt to free a blocked
diamond core drilling crown.
5.1. Fault: Diamond core drilling crown jams.
Cause: Possibly caused by compressed drilling dust resulting from dry-boring
without a dust extraction system.
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