BLUM TANDEMBOX Installation guide

TANDEMBOX
FAQ
Quick facts:
▪Available in 3 colours:- Silk white, Aluminum grey and Orion grey
▪Available in 30kg and 65kg with smooth running motion
▪With soft-close BLUMOTION to close softly and effortlessly
▪TANDEMBOX offers minimal opening forces and a feather-light glide
▪Country of origin: Austria
▪Motion technologies: BLUMOTION, SERVO-DRIVE
▪Material / Drawer sides in epoxy coated steel / Drawer runners in zinc
plated steel
▪Cabinet width: from 300mm to 1200mm
FAQ sections:
Basic Product
Information
Technical
information
Trouble
shooting

What is TANDEMBOX?
What material is TANDEMBOX made of?
The drawer sides are made of epoxy coated steel.
The drawer runners are made of zinc plated steel.
Basic product info
What colors is TANDEMBOX available in?
TANDEMBOX is available in 3 different colors:-
Silk white
Aluminium grey
Orion grey
TANDEMBOX is our versatile metal box system with concealed runners for drawers and
pull-outs.
All TANDEMBOX applications are based on the proven TANDEMBOX cabinet profile,
giving you a feather-light glide and enhanced opening and closing ease.

Basic product info
How many lengths is TANDEMBOX available in?
TANDEMBOX is available in the following lengths:-
•400mm, 450mm, 500mm
All TANDEMBOX runners are based on the tried and tested TANDEMBOX cabinet profile.
Its feather-light glide has been impressing users for many years.
The secret lies in the low-friction cylindrical nylon rollers that guarantee top quality motion and
dynamic carrying capacities of 30 kg and 65 kg.
How many load capacities are available?
TANDEMBOX runners are available in the following load capacities:-
•30kg &65Kg
Load capacity Available length

Basic product info
How many different types of TANDEMBOX are available?
There are 8 different types:-
•4 types of Standard drawers S1, S2, S3 & S4 (attached to the drawer front)
•4 types of Inner drawers i3, i4, i5 & i6 (inside the cabinet)

Basic product info
1
23
4
5
1
2
3
5
6
4
1. Drawer side (3 colours available)
2. Blum logo cover cap (2)
3. Back fixings (2)
4. Gallery rods (2)
5. Front fixings (2)
6. Drawer runner (30kg or 65kg)
1. Drawer side (3 colours available)
2. Blum logo cover cap (2)
3. Back fixings (2)
4. Front fixings (2)
5. Drawer runner (30kg or 65kg)
S2 is 171mm high and has min. height
requirement of 192mm inside the cabinet
S1 is 84mm high and has has a min. height
requirement of 98.5mm inside the cabinet
S1
S2

Basic product info
1
2
3
5
6
4
1. Drawer side (3 colours available)
2. Blum logo cover cap (2)
3. Back fixings (2)
4. Box caps (2)
5. Front fixings (2)
6. Drawer runner (30kg or 65kg)
1
2
3
5
4
1. Drawer side (3 colours available)
2. Blum logo cover cap (2)
3. Back fixings (2)
4. Gallery rods (4)
5. Front fixings (2)
6. Drawer runner (30kg or 65kg)
S3 is 203mm high and has min. height
requirement of 224mm inside the cabinet
6
S4 is 200mm high and has min. height
requirement of 224mm inside the cabinet
S3
S4

Basic product info
1. Drawer side (3 colours available)
2. Blum logo cover caps (2)
3. Back fixings (2)
4. Inner front panel fixing (2)
5. Inner front panel section
6. Drawer runner (30kg or 65kg)
1
23
4
6
1. Drawer side (3 colours available)
2. Blum logo cover caps (2)
3. Back fixings (2)
4. Gallery rods (2)
5. Inner front panel fixings (2)
6. Inner front panel section
7. Cross gallery
8. Drawer runner (30kg or 65kg)
1
2
3
5
8
4
5
6
7
i3 is 84mm high and has has a min. height
requirement of 106mm inside the cabinet
i4 is 171mm high and has min. height
requirement of 192mm inside the cabinet
i3
i4

Basic product info
1
2
3
5
8
4
1
2
3
5
8
4
6
7
6
7
1. Drawer side (3 colours available)
2. Blum logo cover caps (2)
3. Back fixings (2)
4. Gallery rods (4)
5. Inner front panel fixings (2)
6. Inner front panel section
7. Cross gallery
8. Drawer runner (30kg or 65kg)
1. Drawer side (3 colours available)
2. Blum logo cover caps (2)
3. Back fixings (2)
4. Box caps (2)
5. Inner front panel fixings (2)
6. Inner front panel section
7. Cross gallery
8. Drawer runner (30kg or 65kg)
i5 is 203mm high and has min. height
requirement of 224mm inside the cabinet
i6 is 200mm high and has min. height
requirement of 224mm inside the cabinet
i5
i6

Basic product info
How is TANDEMBOX tested?
All TANDEMBOX are tested for 100,000 opening and closing cycles.
Right-click here to learn more about Blum Quality and how we test our products.
What is the country of origin?
TANDEMBOX is made in 1 of our 8 factories in Austria.
Right-click here to learn more about our factories in Austria.
What is the warranty for TANDEMBOX?
Where can I find more information about TANDEMBOX?
1. You can Right-click here to open the TANDEMBOX page on blum.com
2. You can also find many application images on connect.blum.com.
Right-click here to see how TANDEMBOX can be applied to various places around your
home.
All Blum mechanical products come with a lifetime warranty.
Please Right-click here to download our warranty.

Basic product info
What motion technologies does TANDEMBOX offer?
TANDEMBOX comes in soft closing BLUMOTION as well as with the electrical motion support
system SERVO-DRIVE.
•BLUMOTION is for soft closing solutions –normally when the door is fitted with a handle.
•SERVO-DRIVE is for handle-less designs. The drawer opens with a light push against the front
panel
Can I use TANDEMBOX for handle-less designs?
Yes! There are 2 options for you to achieve this.
1. The drawer front can be designed to have a 45-degree finger pull on the top or bottom
part of the drawer.
2. You can also combine the BLUMOTION runner with the SERVO-DRIVE electrical motion
support system.
Can I open TANDEMBOX with TIP-ON?
No. TANDEMBOX does not have a TIP-ON option.
45-degree finger
pull SERVO-DRIVE
equipped
drawers

Basic product info
How do I maintain my TANDEMBOX?
Blum products are generally maintenance-free.
However, during assembly and usage of Blum products, it is inevitable that stains or other
kinds of contamination will appear on the product or its surfaces.
When cleaning, make sure to treat the protective areas and materials with care. Avoid applying
abrasive chemicals as they will cause damage to the product.
For more information on cleaning and general
maintenance instructions, please Right-click here to
download our “Cleaning and maintenance” manual.
Can I still open my SERVO-DRIVE TANDEMBOX if the power is out?
Yes! When the power goes out, SERVO-DRIVE for TANDEMBOX is not activated.
However, you can continue to open and close manually without restrictions. Once the power
has been restored, you can carry on using everything as normal without having to make any
additional adjustments.

What is the min/max cabinet width for TANDEMBOX?
The minimum cabinet width is 300mm.
The maximum cabinet width is 1200mm.
Technical Info
Can I design my cabinet wider than 1200mm?
No! TANDEMBOX will not be able to function properly if the cabinet dimension are exceeding
the specifications stated by Blum.
Furthermore, the warranty might be voided as it is considered as “not used for the products
intended purpose”
Can I design my cabinet narrower than 300mm?
Yes! But you have to use a special construction call SPACE TWIN for this.
What is the correct base panel and back panel thickness?
The correct thickness is 16mm.
16mm

When I choose to use SERVO-DRIVE –what extra items do I need?
You need to purchase the following items in addition to the TANDEMBOX BLUMOTION
mechanism.
Technical Info
Drive units and a transformer
•The Drive unit triggers the opening signal with a single touch on the front.
•The 24-watt transformer is mounted to the back of the cabinet with a
transformer housing
Bracket profile
Flexible attachment of drive units to suit the individual positions of the pull-outs
Distance bumpers & cabling
•Distance bumpers ensure the required trigger path of at least 2 mm.
•Cables can be connected via our flexible piercing technology

Technical Info
How many drive units do I need?
You need 1 drive unit per drawer.
The drive units are always mounted behind the drawer at the back of the cabinet.
Do I need a SERVO-DRIVE transformer for every cabinet?
No! One Blum SERVO-DRIVE transformer can be shared across up to 50 TANDEMBOX drive
units.
What is the correct installation position of the runner?
The correct position is : 3rd hole at 37mm
Wrong! The carpenter/installer did not follow
Blum guidelines.
If the drawer does not function properly, ask
your carpenter to correct the installation.
This is not a product defect issue but an
installation problem.
Correct installation. Screw is
positioned at 37mm into the 3rd
hole of the runner.

Technical Info
How do I remove the drawer from my cabinet?
1. Pull the drawer out –all the way
2. Lift the front of the drawer slightly AND
3. THEN pull the drawer towards you while keeping the drawer lifted
Careful! Once you have detached the drawer from the runners, you will have to carry all the
weight of the drawer. Make sure that the drawer is completely empty before removing the
drawer!
How do I insert the drawer into the cabinet?
1. Pull out both runners (L&R) all the way
2. Place drawer on top of the runners
3. Push the drawer into the cabinet –all the way – until you hear a ‘click’.
Now the drawer is connected to the runners, and you can use is as per normal.

Trouble shooting
Why is my drawer front panel coming off the drawer?
This is due the incorrect installation of the drawer front fixing bracket.
The front fixing bracket has not been secured properly against the drawer front
panel. This causes the drawer front to drop off after a while
If you encounter this, please ask your carpenter to
fix this for you as it is not a product defect issue but
an installation problem.

Trouble shooting
My TANDEMBOX drawer does not run smoothly anymore. Why?
This can have multiple reasons:-
1. The drawer has been overloaded. Do not load more weight into the drawer than it
has been designed for –either 30kg or 65kg –depending on the runner type.
2. Your drawer runner was not protected (covered) during installation. Saw dust
and other dirt from the job site work has clogged up the mechanism and causes it to
fail. (see image below)
Please Note: Neither of the above-mentioned problems are covered via the
warranty!
I can hear a squeaking sound when I close my drawer
The most common reason is that the drawer runners were unprotected during
installation.
Saw dust and other dirt from the job site work has clogged up the mechanism and
causes it to make this noise.
Sawdust from cutting/drilling

Trouble shooting
My TANDEMBOX feels very tight when I pull it out. Why?
The most common reason is a typical installation error. Either the base panel or the
back panel was not cut-to-size properly (too wide or too narrow)
Please refer to the proper cutting dimensions below and ask your carpenter to correct
the mistake.
There is a clicking sound when I close my TANDEMBOX drawer
The most common reason is that the back panel of the drawer has not been cut-to-size
properly. See proper cutting dimensions above.
Can I exchange the product after Installation?
No. Once the product was installed, it is no longer eligible to be returned, exchanged or
refunded.