Dafra DNPB328 User manual

DNPB328 Operation Manual
PLEASE SPEND 5 MINUTES READING
THESE INSTRUCTIONS BEFORE USING
YOUR NEW RIVNUT TOOL.
TRUST US, IT WILL SAVE YOU TIME AND
INCONVENIENCE IN THE LONG RUN.
READ THIS MANUAL CAREFULLY BEFORE USING THE TOOL!
It is IMPORTANT to follow the safety instructions for adequate protection
against injuries.
- This tool should be used ONLY to set blind rivets within the TOOL’S CAPACITY. It MUST
NOT be used for other purposes, such as hammer, etc.
- This tool should be always operated with compressed air supply within the air pressure
range 0.5Mpa ~ 0.7Mpa.
- Always DISCONNECT the air supply from the tool before changing the tool parts, such as
mandrel, etc.
- DO NOT use the tool in the environment described as below:
fuel and combustion air.
temperature rapidly rising.
humidity, rain, water, storm and thunder, lightning.
- When the tool is suspended by the operation hook during use, be sure the tool will not fall.
- When using the tool, always carry protective goggles, protective gloves, safety helmet, and
other necessary protections. It is highly recommended for safety reasons.
- Only use genuine spare parts for maintenance and repairs.
- All repair work must be carried out by skilled personnel, when in doubt, always return the
tool to the distributor.

DNPB328 Operation Manual
TOOL CAPACITY
Blind rivnuts M3 – M4 – M5 – M6 – M8 all materials and styles.
TOOL SPECIFICATIONS
Air supply pressure: 0.5Mpa ~ 0.7Mpa
Output traction power: 14,000N ~ 19,600N
Stroke: 1mm ~ 7mm adjustable
Net weight: 1.70kgs
GETTING STARTED
Please refer to the TOOL EXPLOSIVE ILLUSTRATION and the PARTS LIST in this manual
in order to have a good understanding of the tool parts described. The descriptions of the tool
parts appear in this manual are in italics with the parts position numbers corresponding to the
tool explosive illustration.
1. This pneumatic powered tool should be used with a compressed air supply. It is
recommended to use an air hose with a diameter bigger than 8 mm.
2. Before connecting the tool to the compressed air supply, check that the compressed air
pressure is within the specified range of between 0.5Mpa ~ 0.7Mpa. Once the air pressure
has been confirmed, connect the air hose adaptor onto the tool air adaptor (#58). The air
adaptor comes in different versions in different countries. Normally the tools are equipped
with the correct version for your country as default, however, if the air adaptor you have
received does is incorrect, please contact the tool distributor(s).
3. Before using the tool, ensure that you are using the correct mandrel (#1) and anvil (#2)
according to the size of the rivnut to be set. This tool is equipped with mandrels and anvils
from M3 to M8 in the kit. For convenience, 5 identical locknuts (#65) are provided in the tool
kit for each size mandrel (#1) and anvil (#2) in pairs.
a) Remove the anvil (#2) and the locknut (#65) from the tool:
b) Remove the knurled cover (#12) and nose pedestal (#10):

DNPB328 Operation Manual
c) Use a spanner to loosen the connect sleeve (#3) from the spring house (#5), take out the
mandrel (#1), transfer bar washer (#63), connect sleeve (#3), transfer bar (#4) and spring
(#6):
d) Take the transfer bar washer (#63)out and insert the required mandrel (#1) from the tool
accessories pack as per rivnut size, then mount into the connect sleeve (#3), transfer bar
(#4), together with spring (#6) install into the spring house (#5). Screwthe connect sleeve
(#3) tight with spring house (#5) using a spanner:
e) Screw the knurled cover (#12) and nose pedestal (#10) back to the tool, then replace the
locknut (#65), and anvil (#2):
MANDREL PROTRUDING SET FOR BLIND NUT
1) Adjust the length of the mandrel (#1) that protrudes from the anvil (#2) according to the length
of the rivnut to be set by adjusting the position of the locknut (#65), and anvil (#2) screwed
on the mandrel (#1):
2) Never set the mandrel protruding length too long or too short for the rivnut to be set:

DNPB328 Operation Manual
STROKE SETTING
1) Tool stroke should be set according to the work piece where the rivnut is to be set. This
tool’s stroke can be adjusted between 1mm and 7mm.
2) To set the stroke:
a) Push the sleeve (#56) to the tool mandrel side, as shown:
b) Adjust the tool stroke by turning the knurled wheel on the tool as shown:
The scales along with the stroke setting window are indications for stroke.
c) Replace the sleeve (#56) back to its initial position after setting the stroke.

DNPB328 Operation Manual
It is recommended to set a trial rivnut to ensure the correct stroke setting. The illustration below
shows the results of correctly and incorrectly set stroke.
If the stroke is set too long or there is a fault with the rivnut itself, it’s possible that the rivnut may not
be released from the tool mandrel (#1) after setting.
To release the tool from the damaged rivnut, first loosen the knurled cover (#12), slide away the
sleeve (#56), then insert a 2.5mm diameter Allen-key through the stroke adjusting window into the
gap along the flat side of the nose pedestal (#10) and spring house (#5) which is positioned to the
side in the stroke adjusting window. Be sure that the nose pedestal (#10) and spring house (#5) are
secure with each other then hold on to the nose pedestal (#10) and the Allen-key clockwise. This
will also turn the mandrel (#1) clockwise therefore releasing the rivnut as shown:
TOOL OPERATION FOR SETTING RIVNUTS
1) After completing your start-up preparations and setting your stroke correctly, turn your rivnut
once ontothe tool mandrel (#1) then apply light pressure to the end of the rivnut - the mandrel
(#1) will automatically thread itself into the rivnut. Place the mandrel (#1) with rivnut attached
into your pre-drilled work piece hole.
2) Pull the tool trigger (#53) to set the rivnut in its position on work piece.
3) After setting the rivnut, release the trigger (#53). The mandrel (#1) will turn anti-lock wise
and release the tool from the set rivnut. If the tool is still not released from the set rivnut,
press the button at the back of compressed spring pedestal (#21), then the tool will be
released.

DNPB328 Operation Manual
TOOL MAINTAINANCE
In order to maintain optimum performance after several weeks of regular use, add a few drops
of hydraulic oil to the inlet of the air adaptor (#58)of the tool in order to reduce the friction of the
tool parts since the oil will be blown inside the tool when tool is in operation.
After a period of use, the tool stroke may be reduced which indicated that the hydraulic oil in the
pneumatic tool needs to be refilled or changed;
1) Remove the screw (#17)with a hexagon wrench:
2) Connect the air supply and to place a cloth over the hole where the screw (#17)was
removed, then to pull the trigger (#53) and the oil will be forced out from the tool
3) Screw the oil inject adaptor (in oil injector set in the accessories pack) into the hole where
screw (#17) was removed;
4) Use the oil injector (in the accessories pack) to slowly inject the oil until full (approx. 15ml).
Remove the injector and its adaptor, then clean off any excess oil on the tool and tightly
screw the screw (#17)back into the tool;

DNPB328 Operation Manual
5) Test the tool stroke. If the stroke is still not what it should be, some air could have entered
the oil cylinder (#15) while refilling the oil in the tool.
To release this extra air from the tool, connect the tool to the air supply, pull the tool trigger
(#53) 6 or 7 times, then loosen the screw (#9), to let the extra air leak out and then tighten
the screw (#17)again.
OPTIONAL USE OF AIR FLOW ADJUSTOR
The air flow adjustor (in the tool accessories pack) allows you to adjust the air flow released
from the tool when the tool is operated. It has no effect on the performance of the tool itself but
is used based on the tool operator’s personal preference.
The operator mayfeel uncomfortable with the air released from the tool blowing on his / her arm.
Once mounted on the back of the compressed spring pedestal (#21), this device allows the
operator to direct the air release away from their body, while still providing access to the button
at the back of the compressed spring pedestal (#21) - via the window in the air flow adjustor -
to release the tool from a set rivnut when necessary (refer to TOOL OPERATION FOR SETTING
RIVNUT section 3).

DNPB328 Operation Manual
PARTS LIST
PART
POSITION
PART CODE DESCRIPTION
Quantity in
Tool/Kit
1
P03006-00
mandrelM8 metric
1
2
P00306-00
anvil M8
1
3
P00481-00
connect sleeve
1
4
P00494-00
transfer bar M8
1
5
P00482-00
spring house
1
6
P03003-00
spring
1
7
F60074-00
O-ring
1
8
F00101-00
pin
1
9
P00315-00
adjust sleeve
1

DNPB328 Operation Manual
PARTS LIST - continued
PART
POSITION
PART CODE DESCRIPTION
Quantity in
Tool/Kit
10
P00483-00
nose pedestal
1
11
F00011-00
O-ring
1
12
P00317-00
knurled cover
1
13
P00318-00
wire circlip
1
14
A00100-00
assembly air motor
1
15
A00101-00
assembly oil cylinder with DAFRA logo DNPB328
1
16
F00002-00
washer
1
17
P00009-00
screw
1
18
F00103-00
U-ring
1
19
P00319-00
piston pin washer
1
20
F00027-00
O-ring
2
21
A00102-00
compressed spring pedestal
1
22
F00104-00
O-ring
1
23
P00323-00
return spring
1
24
F00105-00
O-ring
1
25
P00039-00
screw
4
26
A00008-00
assembly grips
1
27
P00017-00
oil cylinder washer
1
28
F00039-00
U-ring
1
29
P00325-00
piston shaft washer
1
30
P00326-00
assembly oil cylinder locknut
1
31
P00021-00
screw
12
32
A00104-00
assembly air cylinder
1
33
F00040-00
O-ring
1
35
A00105-00
assembly piston
1
36
F00008-00
O-ring
1
37
P00027-00
piston pedestal
1
38
F00009-00
O-ring
1
39
P00028-00
air cylinder pedestal
1
40
P00029-00
screw
1
41
P00314-00
spring
1
42
P00373-00
switch lower base
1
43
F00011-00
O-ring
3
44
F00010-00
O-ring
1
45
P00330-00
switch upper base
1
46
F00106-00
O-ring
1
47
A00103-00
assembly trigger shaft
1
48
F00012-00
O-ring
1
49
P00334-00
oil cylinder gasket
1
50
P00034-00
lever
1
51
F00013-00
pin
3
52
P00035-00
connecting rod
1
53
P00058-77
short trigger red
1
54
F00014-00
pin
1
55
P00336-00
wire circlip
1
56
P00337-00
sleeve
1
57
F00005-00
O-ring
1

DNPB328 Operation Manual
PARTS LIST - continued
PART
POSITION
PART CODE DESCRIPTION
Quantity in
Tool/Kit
58
F00015-00
air adaptor standard
1
59
A00117-00
assembly air adaptor with hose w/o switch
1
60
F00016-00
O-ring
3
61
P00164-00
assembly air adaptor joint
1
62
F00048-00
A-circlip
1
63
P00488-00
M8 transfer bar washer
1
64
P00150-00
swivel joint - optional supply, part of A00117-00
0
65
P00311-00
locknut
1
Accessories Pack
P03010-00
mandrelM3 metric
1
Accessories Pack
P03009-00
mandrelM4 metric
1
Accessories Pack
P03008-00
mandrelM5 metric
1
Accessories Pack
P03007-00
mandrelM6 metric
1
Accessories Pack
P00492-00
transfer bar M3
1
Accessories Pack
P00490-00
transfer bar M4
1
Accessories Pack
P00491-00
transfer bar M5
1
Accessories Pack
P00493-00
transfer bar M6
1
Accessories Pack
P00484-00
M3 transfer bar washer
1
Accessories Pack
P00485-00
M4 transfer bar washer
1
Accessories Pack
P00486-00
M5 transfer bar washer
1
Accessories Pack
P00487-00
M6 transfer bar washer
1
Accessories Pack
P00310-00
anvil M3
1
Accessories Pack
P00309-00
anvil M4
1
Accessories Pack
P00308-00
anvil M5
1
Accessories Pack
P00307-00
anvil M6
1
Accessories Pack
P00311-00
locknut
4
Accessories Pack
P00393-00
air flow adjuster
1
Accessories Pack
F00010-00
O-ring
1
Accessories Pack
F00011-00
O-ring
3
Accessories Pack
F00012-00
O-ring
1
Accessories Pack
F00106-00
O-ring
1
Accessories Pack
A00009-00
oil injector set
1
Accessories Pack
P09051-00
hook
1
Accessories Pack
P09052-00
wrench
1