01/2011
Subject to change
Page 1 of 2
Operating and maintenance instructions for
Drilling process for sewage water HAKU ZAK 69
1. Drilling process
Please observe the applicable standards and regulations, accident prevention regulations and
the regulations of the employers‘ liability insurance associations.
According to DVGW regulations, valves must be installed „stress-free“. Installation should only
be carried out by appropriately trained personnel.
Please pay particular attention to DVGW Code of Practice W 333 for drilling water pipes.
1.1. Before drilling:
- Clean the pipe surface (the surface of the pipe must be free of dirt, soil or grease)
- Place the two half shells of the HAKU 45° - service valve (order no. 524-00) around the pipe
- Tighten the enclosed hexagonal bolts evenly crosswise to the metal stop with the torque
specified below. (do not use an extension):
- D 90
– D 140: max. torque: 32 Nm
- D 160 – D 225: max. torque: 56 Nm
- Install waste water slide valve ZAK 69 (order no. 483-01) in the HAKU 45° and secure
against unintentional unlocking with anti-twist protection
- Select the drilling adapter for ZAK 69 (12) and screw it into the drilling machine.
- Loosen the clamping screw (4) for the boring rod fixing
- Screw the drilling unit ZAK 69 (order no. 8312001100) onto (14) the boring bar
- Turn feed nut (8) up to the red marking
- Open the flushing tap (9)
- Milling cutter (15)
- d 40 mm (Order No. 831.101.4000) for PE pipes d63 - d75 or
- d 50 mm (Order No. 831 101 5000) for PE pipes d90 – d225 screw onto the drilling unit (14)
Comment
: If possible, the pipeline to be drilled should be filled with water for the tapping pro-
cess in order to ensure appropriate cooling of the drills/milling cutters.
- Move ZAK 69 waste water valve to open position
- Insert the drilling machine with the drilling adapter into the ZAK69 socket and lock it
clockwise. Tighten the lock nut (12.1) of the transition piece with a hook spanner
(Order No. 831.700.0601).
Guide the drill shaft (1) up to the pipe surface. Avoid hitting the cup drill on the pipe. The drill
shaft must be aligned so that the detents are on the side of the clamping screw. Engage the
clamping bolt (4.1) by moving the drill shaft back and forth. Then fix the drill shaft by hand with
the clamping screw (4).
1.2 Drill
The drilling process must be carried out at a slow and as even a feed as possible. The feed mo-
tion tool (Order No. 831.700.0500) can be used for this purpose. The drill shaft can be manually
operated with the ratchet (Order No 831.700.0400) for the drilling. Alternatively, other drives,
e.g. (AKKU screwdrivers), can also be fitted. If actuators are used, a slow and more even rotati-
on of the feed leads to less tool wear.
