MAY DMZ329 User manual

Stand 40-081 English page 1 of 9
Installation instruction DMZ329 and DMZ330
Ground screw for MEZZO / DACAPO / FILIUS
The following instructions include all information necessary for the correct mounting and
operation of your MAY screw-in ground anchor. For absolute safety, please read these
instructions carefully and then keep them for later reference.
Non- observation of operating instructions can result in personal
injuries or damage to property.
Please note that if these instructions are not observed, the manufacturer cannot
assume any liability or guarantee.
Always follow the safety regulations.
Should you not understand any part of these operating instructions, please
contact your MAY dealer.
Mounting drawing
1x ground screw, length: 2 m
bore hole for theft and anti-twisting
lock
1x flange plate
1x hexagon screw, M16x30mm
1x washer
1x upper anchor tube
3x countersunk screw M16
3 x nut M16
+ 3x washer
3x set screw for vertical adjustment
Caution

Stand 40-081 English page 2 of 9
Service: Installation of ground screw
Preconditions:
-DMZ329 / DMZ330 must be purchased (upper tube and ground screw)
-Make sure there are no pipes, tubes, gas pipes, water or power supply in the ground. The
property owner / customer must sign the foundation installation conditions (you will find
the template on the last page of these instructions). By this written confirmation, the
buyer / customer assumes liability and duty of care.
-There must be free access to the installation area.
1. Check online where to find the next available Krinner sales partner (go to
https://www.schraubfundamente.de/en/kontakt/regions/ and enter your postal code).
2. Contact your Krinner sales representative and clarify the installation. Optimally forward
this instruction manual (digital version available) and ask for your individual offer, possibly
a quote with hourly rate and call-out charge.
3. Your Krinner sales partner must view the terrace and identify the soil class by a test
drilling. The soil class must not exceed class 4, down to 2 m below ground level (length of
the ground screw). This helps to clarify whether the KR20 screwing machine is suitable or
whether a larger machine must be used. This soil analysis is only binding in case of a
homogeneous soil fabric.
4. This manual illustrates the “5 steps to fasten the ground screw“. As soon as the SZ329 /
SZ330, the ground screw and the MAY parasol has been delivered to the terrace, the
service technician can start with the installation according to step 1, 2 and 3. Mainly tools
needed: Screwing machine KR20, hammer drill, a ø40x800mm rock drill, a Krinner screw-
in attachment F1234567, a 1.2 m ground screw and in case of multiple parasols an optical
level. In order to coordinate this project, it is recommended to have a MAY representative
on site.
Placing the ground screw
1. Allow sufficient space between parasols or between the wall of the house and the parasol.
Parasols that are located too close together wear sooner.
Parasols may sway slightly. If there is not enough space between them, they
may touch and abrade or scour the canopy fabric at the spoke ends.
Make sure that there is a clearance of 15-20 cm between the parasols (or
between the parasol and the wall of the house).
2. Bear in mind, we are able to compensate any unevenness of the ground by adjusting the
height of each individual parasol. Extra - length upper tubes are available at 10 cm
gradation and can be adjusted and accommodated on-site.
Caution

Stand 40-081 English page 3 of 9
5 steps to fasten the ground screw
Preliminary, let the property owner / customer sign the foundation installation conditions (see
page 8) and archive it legally.
1. Step 1: Removal and primary drilling
Remove paving and gravel until a depth of approximately 15 cm. Use a ø 40 mm drill for
the vertical predrill. Pay attention to the chapter “Placing the ground screw“.
2. Step 2: Preparation
For preparation for the 2 m ground screw a smaller ground screw, about 1.2 m long, must
be screwed-in and out again.
3. Step 3: Screwing-in
Screw-in the 2 m ground screw until there is a space of 19 mm between top of terrace and
top of ground screw. This ensures the winter coverage will be even with the ground. In
case of multiple parasols use an optical level to have all ground screws screwed-in to the
same depth.
19mm

Stand 40-081 English page 4 of 9
Step 4 and 5 and the erection of the parasol must be carried out by your MAY dealer.
1. Step 4: Alignment
See chapter „Alignment and fixation of upper anchor tube“ for detailed instruction.
4. Step 5: Finish
Fill up the gravel and place the paving as close as possible to the flange. That way the
ground screw disappears completely below the pavement.

Stand 40-081 English page 5 of 9
Alignment and fixation of upper anchor tube
1. Attach the 16 mm washers onto the M16x35 hexagon screws and tighten them to fix the
upper anchor tube onto the flange plate, the countersinking must face upward /see fig.)
Use the enclosed size 14 hexagon key with extension.
Screws that are not tightened correctly will work loose.
If screws are not tightened firmly enough, there will not be sufficient tensile
force to trigger self-locking. If the screws are tightened too firmly and over-
stressed, the screw connection may slacken.
Tighten the three M16 screws manually using the enclosed hex key and
extension. Exert as much force as possible. With the enclosed tools there is
virtually no risk of over-stressing.
The correct torque for a torque wrench is 210 Nm.
countersinking
flange plate
upper anchor tube
extension for size 14 hexagon key
hexagon key size 14
Caution

Stand 40-081 English page 6 of 9
2. Insert the M16 countersunk screws into the bore holes of the coupling plate and so screw
the upper anchor tube with coupling plate onto the flange plate (see fig. below). Attach the
nuts from the bottom. Do not tighten the screw connection firmly yet.
3. As a practical matter, the ground screw is never screwed in 100% straight. Therefore, the
upper part must be aligned with a water spirit level (see fig.). Adjust the set screw and the
M 16 screw as long as your spirit level indicates that the plate is horizontal. Then apply
210 Nm to tighten the screw connection.
90°
90°
M16 countersunk screw
M16 nut
+ 16 mm washer
upper tube
ground screw
check 2 sides with
the spirit level
set screw
M16 countersunk screw
set screw

Stand 40-081 English page 7 of 9
Storage / dismounting
1. Lift the parasol from the anchor tube.
2. Remove the upper anchor tube completely.
3. Screw threaded pins into the bore holes flush with the plate (see fig.)
The thread may get damaged.
Without cover plate, dirty water or sand may be washed into the flanks of the
thread. As sand is harder than steel, the thread may get damaged when the
screw is turned.
Screw in the threaded pins flush with the plate.
4. In case you have two or more parasols, each parasol and its corresponding accessories
should be marked during dismounting (with punch marking or waterproof marker, e.g. for
winter storage).
Marking saves a lot of time and helps to keep things in order.
If clearly marked, each sunshade can easily be assigned to its proper location
and re-erected parallel to the wall of the house or next to the others.
For clear and easy later assignment use the same number to mark the centre
pole, the anchor tube and the ground tube. For example, for sunshade No. 1,
all three parts should carry number 1, all three parts of sunshade No. 2
should be marked with a 2, etc.
5. Lubricate the screws on a regular basis to prevent rust.
Caution
threaded pins M16
Tip

Stand 40-081 English page 8 of 9
Mounting –Tools required
1. SZ329 / SZ330 (upper anchor tube + ground screw KSF F 140x1200-M by Krinner)
including MAY standard parts.
2. Hammer drill with ø40 rock drill.
3. Krinner screw-in machine KR20, telescopic guiding rod system, guiding safety bar, screw-
in attachment F1234567.
4. Cable reel
5. 1.2 m ground screw
6. Spade, shovel, small trowel
7. Spirit level + tape measure (possibly)
8. Folding rule
9. Hexagon key in size 3, 4, 8 and 14
10. Open-ended spanner size 17 + 19
11. Ring spanner size 24
12. In case of multiple parasols: optical level, ground marking spray, centring plate for rock
drill and soil spikes for fixation (custom made).

Stand 40-081 English page 9 of 9
Foundation installation conditions
Before installation of a ground screw, a foundation installation condition sheet must be signed. This
template is a translation of a year 2011 copy from the Krinner company. If applicable, please request an
updated version. A signed copy should be archived by the “ground screw service”.
Project:
Scheduled date: Scheduled time:
The points of installation have been checked and are free of obstacles such as ground cables or
underground constructions.
The points of installation are marked and levelled.
Cable diagrams are available.
It is confirmed there are no underground cables (gas pipes, water, telephone, power supply, etc.)
within a radius of 50 cm around the point of installation.
There must be free access for the installation machines to the points of installation plus 3m x 3m
around, installation points must be marked.
In case the start of construction cannot be met as scheduled, please inform us 2 working days
ahead.
paved ground ________________________ yes no
tarred ground ________________________ yes no
underground construction/waste _________ yes no
Soil class:
Terrain characteristic:
Installation of ground screws into a rocky ground or into a rock, removal of paving and core drilling though
asphalt are available at special service.
Further information:
Remark: In case of swampy ground, increased groundwater level, flood, muddy ground caused by strong
rain or ground frost, ground screws cannot be installed. The offered price applies to the specified
service. Any additional effort or service must be invoiced based on hourly rate. If during
assembly it turns out that the installation of the ground screws cannot be conducted or only with
excessive material and cost expenditure, we are not obliged to provide any service at these
positions. This does not affect any further parts of the contract. The German law on contracts
for work & services (BGB), current version, applies.
Warranty: Warranty excluded in case of natural changes of the ground like sinking, landslide, flood,
earthquake.
Date Signature customer, stamp