Installation Guide

17
en
Special Case: Injection with elongations and piston plug
•
The use of the piston plug is recommended for overhead applications
or boreholes deeper than 250 mm (10"). For underwater applications
the installation is only possible with the aid of piston plugs.
•
Connect the selected injection piston plug with the appropriate injec-
tion extension:
HIT-SZ 12–16 (HIT-SZ 1/2" – 5/8") with HIT-VL 9/1.0
HIT-SZ 18–32 (HIT-SZ 11/16" – 1 3/4") with HIT-VL 16 or HIT-VL 16/0.7
•
See Table II for the corresponding piston plug / drill bit combination.
•
For applications with an effective embedment depth 
inst
> 800 mm
(31"), please connect two or more injection extensions HIT-VL using
the connector HIT-VL K (See Table V). In case of use of two or more
rigid injection extensions HIT-VL 16/0.7, use a flexible tube HIT-VL 16
(0.5 m /20") prior to the connection to the static mixer.
•
To aid installation, mark the required mortar level 
m
and embedment
depth 
inst
with tape or marker on the mixer extension.
•
Quick estimation: 
m
= 1/3 • 
inst
.
•
The injection of mortar with a piston plug HIT-SZ (IP) helps to prevent
the creation of air voids.
•
The mixer extension with the piston plug should be inserted to the back
of the borehole without resistance.
•
During the injection the piston plug will be naturally pushed out the
borehole by the mortar pressure.
•
Attention! By pulling the mixer extension with piston plug, the piston
plug may be rendered inactive and air voids may occur.
5. Installation of the element
•
Mark the anchor/rebar at the required embedment depth.
•
Set the anchor/rebar to the required embedment depth. Embedment
depth must equal to the design specification.
•
Before use, verify that the anchor/rebar is dry and free of oil or other
residue.
•
To ease installation, anchor/rebar may be slowly twisted as they are inser-
ted.
•
After installing an anchor/rebar the annular gap must be completely filled
with mortar.
Insert element into the borehole
•
After injecting the mortar depressurize the dispenser by pressing the
release button. This will prevent further mortar from escaping out of the
mixer.
Depressurize the dispenser
02_BA_HIT_Profi_P1_en.qxd 13.12.2006 13:37 Uhr Seite 17