Molift Rail System, Проектирование и установка устройства

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Mounting procedure for chemical anchor in ceiling
Part no.: 1109253 and 1109256
A chemical anchor without mesh sleeve is used to obtain satisfactory support for MRS in all porous
materials like leca, bricks and siporex. A chemical anchor may also be used if the concrete has ri-
gidity lower than B30, however only after consultation with qualified staff.
• Do not mount MRS in ceilings made of materials with rigidity lower than 25 N/mm2.
• Do not mount MRS in walls made of materials with rigidity lower than 3 N/mm2.
Molift recommends that tensile tests be made if the rigidity of the material in which to mount MRS
is not known. Molift Group AS is not responsible for such tensile tests but will be please to assist
in the arranging of the tests.
For mounting in ceilings MRS uses 2-component chemical anchors (in foil pack) HY-70 together
with threaded M10 anchor rod. A mesh sleeve is not required for mounting in ceilings. The curing
time depends on the ambient temperature. At room temperature 20°C the setting time is 4 min-
utes and the curing time 45 minutes. If the temperature is lower, the setting and curing times will
be longer. At a temperature of 0°C the curing time may be up to 4 hours. When mounting MRS in
cold environments, the foil pack and the anchor rod must keep room temperature during mount-
ing.
• Make sure to have the necessary tools, auxiliary tools and protective equipment at hand be-
fore starting the work.
• Use suitable measuring equipment to mark off the location of the chemical anchor.
The recommended distance between chemical anchors is 180 mm. The recommended edge dis-
tance of chemical anchors is 45 mm.
• Use a concrete bit Ø12 in a hammer drill and drill holes at least 85 mm deep.
It is important to remove all loose parts or partly loose parts after drilling, before the 2-compo-
nent mortar is pressed into the hole. If the remains are not removed, the 2-component mortar
will not attach adequately to the surrounding material and the entire assembly may be torn out
after mounting because of the load.
• Use a fan to blow out dust and loose remains after drilling, press the pump at least twice.
• Use a brush to loosen all partly loose remains in the hole. Brush with rotating movements sev-
eral times!
• Use a fan to blow out dust and loose remains after drilling, press the pump at least twice.
• Prepare the dispenser with feeding/mixing tube and pump. If it is a 330 ml dispenser (article
1109330), press the pump twice to make sure that the 2-component mortar is mixed in the
right mixing ratio.
Important! If you fill the hole with 2-component mortar in an incorrect mixing ratio, the mortar
will not cure sufficiently. This may cause the entire assembly to be torn out after mounting when
subjected to load.
• Pump the 2-component mortar into the clean hole without leaving pockets of air in the mor-
tar. It is enough to pump once. A dispenser of 330 ml will be sufficient for approx 50 holes, Ø12
and 85 mm deep.
Page 56 of 106 Chapter 4 – Mounting of Molift Rail System Rev E 10/2011
Mounting procedure for chemical anchor in ceiling