Cold Weather Operation - Ega Master 79915 Manual De Instrucciones

Drilling in explosive surroundings
Fig.1: The drill must be water cooled to avoid sparks. Water connection on ball cock.
Rotary hammer drilling
Fig.2: Pull back the adjusting sleeve and turn it clockwise to lock. Do not use the quick-release chuck at this
setting because drills and tools will be damaged.
Fig.3: Pull back the locking sleeve and insert the drill. Turn the locking sleeve until it snaps back into the
outset position. Press the machine against the work surface before switching on otherwise the tool will not
hammer. If the drill sticks in the hole, withdraw and reinsert it several times when drilling.
Fig.4: When starting to drill into brittle materials (tiles etc), unlock the adjusting sleeve to "rotary drilling only",
hold the machine by the adjusting sleeve and press it slowly against the work surface until it hammers weakly.
Hold and continue to drill the hole. Switch off the machine briefly and relock the adjusting sleeve.
Rotary drilling only
Fig. 5: Unlock the adjusting sleeve. The quick-release chuck is used at this setting. Commercially available
twist drills can be used in the quick-release chuck.

COLD WEATHER OPERATION

If the machine is to be used during cold weather, preheat the hydraulic fluid at low engine speed.
When using the normally recommended fluids, fluid temperature should be at or above 50 °F/10 °C (400 SSU/
82 centistokes) before use. Damage to the hydraulic system or the machine can result from use with fluid that
is too viscous or too thick.
BEFORE WORKING UNDER WATER
· Check the machine with regard to leakages
· Check the machine regarding functioning of all parts (drilling, striking, actuating valves, etc.)
· Spraying of all moving parts with spray OKS 8604 (or similar).
· Fitting the tools with grease.
AFTER HAVING WORKED UNDER WATER
· Clean the machine
· Dry the machine by blowing out with compressed air
· Spraying of all moving parts with spray OKS 8604 (or similar).
For additional information refer to the machine specific operation and maintenance manual as well.
Good maintenance practice keeps the tool on the job and increases its service life.
The most important maintenance practice is to keep the hydraulic fluid clean at all times.
Contaminated fluid causes rapid wear and/ or failure of internal parts.
The proper quantity of grease is very important from the point of good lubrication and low heat
generation. The grease quantities listened in the following table must be complied with:
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OPERATING INSTRUCTION FOR UNDERWATER TOOLS
MAINTENANCE INSTRUCTION