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A Unique Concept in Roll-up Door Automation

Intended Use

The Paratrak is intended for the automation of the Digi Roll-up Door, 

and may be adapted to other makes of roll-up doors by means of 

Adapter Kits. Typically, a roll-up door weighs about 30 kg. 
The width of a roll-up door may vary from 2,44 m to 3 m, and the height 

from 2,135 m to 3 m.
Longer Drive Shafts and Chain Kits are available for wider and/or 

higher doors.
If needed, (e.g. to avoid a tow-bar on a vehicle in a short garage) the 

Paratrak may be mounted off-centre. This is possible, and the longer 

Drive Shafts are required.

Paratrak Installation Instructions on Digi Roll-up Doors

Preparation

Prior to automating the roll-up door, inspect the door with a view to 

ensuring satisfactory manual operation; 

it is a mistake to imagine that 

automation will overcome the faults of a mal-functioning door.

 

The operator will interpret excessive resistance to door movement, 

due to poor alignment, balance, snagging or excessive wear and 

tear of working surfaces as an obstacle thereby preventing reliable 

movement of the door. Eliminate all hindrances to free and smooth 

door operation.
Check that the side-guides are free of grease, dirt and dents; and are 

secure, vertical and straight.
Check that the triangular support brackets are secure and level. The 

springs inside the door roll should have a light coating of grease.
The door should operate smoothly and easily using one hand, and 

remain stationary when left at any point of travel. Adjust the spring 

force if necessary (refer to the door installation instructions).
Remove or disable any unnecessary equipment or fi ttings, not needed 

for automated operation. If fi tted, leave the centre lock un-locked.

WARNING!

Important Safety Instructions.

 Follow all instructions carefully, as 

incorrect installation could lead to severe injury. It is important for the 

safety of persons to follow all instructions. Save these instructions for 

future reference. 
•  Do not allow children to play with door controls
•  Automated doors should only be operated whilst in full view
•  Take care when operating the manual release since an open door 

may fall rapidly due to weak or broken springs, or mal-adjustment

•  Frequently examine the installation for signs of wear or damage, 

in particular, that tracks and mountings are secure, and that the 

balance of the springs is correctly adjusted

•  For use of the manual release, refer to the section Manual Operation 

on page 11

•  During maintenance or adjustment, disconnect the mains supply
•  This appliance is not intended for use by persons (including 

children) with reduced physical, sensory or mental capabilities, or 

lack of experience and knowledge, unless they have been given 

supervision or instruction concerning use of the appliance by a 

person responsible for their safety.

Permanently  fi x  labels  warning  against  entrapment  in  a  prominent 

place or near any fi xed controls.
After installation, ensure that the mechanism is properly adjusted and 

reverses when closing upon an obstacle, 40mm high, placed on the 

fl oor.
The drive must not be used on a roll-up door incorporating a wicket 

door (unless the roll-up door cannot be operated if the wicket door is 

closed).
After installation, ensure that parts of the door do not extend over 

public foot paths or roads.

Contents of the Package

The Paratrak Operator consists of a carton and a set of two shafts, 

which may be chosen for standard or special door widths.

The carton contains:

Recommended Tools and Equipment for this installation 

•  An Instruction pamphlet
•  The Paratrak Drive Unit
•  Battery Box assembly,  

  with a Controller and two  

  12V Batteries
•  Hardware Pack with nuts and bolts
•  24V Power Adapter
•  Two Sprocket assemblies
•  Four Bearing Brackets

•  Grease Sachet
•   Junction Box
•   Curly Cable
•   Two lengths of roller-chain
•   eKey Remote
•   Battery cable with plug
•   White Jumper wire
•   500 mm of twin-fl ex

•  Electric Drill (with hammer action)
•  Drill Bits 

 

    Masonry:  5.5 mm, 8 mm 

 

  Steel: 3.5 mm, 4 mm, 6 mm, 7 mm

•  Tape Measure – 5 m 
• Hammer
• Hacksaw
• File
•  Allen Key 3 mm

•   Screwdriver  

 

6 mm  (Philips/Pozi)

• Spanners 

 

  Sockets:  10 mm 

 

  Flat/Ring:  7 mm 

•  Spirit Level 
•  Step Ladder – 1,7 to 2 m high
•  Extension Lead to suit

– INSTALLATION –

It is assumed that the proper condition and 

balance of the door has been achieved.

Step 1

Inserting the chains into the Sprocket Covers, left and right 

Insert  the  fi rst  link  (the  one  without 

the anchor pin) of one of the chain 

bundles into the opening of the 

shorter side of a Sprocket Cover 

assembly. Push the chain through, 

link-by-link, until it emerges at the 

other side. Pull the chain about 

halfway through the assembly. 

Repeat for the other chain bundle 

and Sprocket Cover assembly. See 

Figure 1.

Step 2

Fixing the Chain Anchor to the fl oor, left and right

Starting on the left side, mark out the drilling dimensions as in Figure 2. 

Using a Ø8 mm masonry bit, drill each hole as indicated to a depth of at 

least 65 mm, and fi t two Ø8 x63 Screw Plugs. Please refer to the following 

tips. 

Note: the box has a drilling template for ease of use.

TIPS  

1.  Accuracy is important! Before drilling, extend the centre-lines well 

beyond the hole-positions. 

2.  Start each hole with the drill set to normal (no hammer) and, while 

focusing on accuracy, drill initially to a depth of about 5mm before 

changing the drill to hammer. 

3.  To avoid snapping screws inserted in the fl oor; after drilling each hole, 

leave the mounds of dust. Insert the tips of the screw-plugs part-way 

into the holes, and then brush away the mounds of dust. Drive the 

plugs in fl ush. Apply a lick of grease to the bolt threads before fi tting.

Figure 1

Figure 2 Left Side. Mirror for the Right side.

Step 6

Connecting the Cables

Flex the side clips and remove the Light Cover from the front of the Battery 

Box. Set the cover aside until later.
Place the two batteries in the Battery Box with the terminals of each near 

the middle. 

As in Figure 8, connect the Black battery wire to the left Black terminal, 

and the Red battery wire to the right Red terminal. Leave the 3-Pin plug 

from the batteries un-plugged at this stage. Connect the White Jumper 

wire from the left Red terminal to the right Black terminal. Insert the 

matching plugs from the Paratrak into the sockets, fi rst and fourth from 

the right of the Controller. See Figure 9.

At this stage, check that the door is neutrally balanced. If necessary, adjust 

the spring force to balance the door.

Step 7

Cutting the Shafts to length 

Starting on the left side, move the Sprocket Cover assembly to the same 

level as the bottom rail. Note the size of the gap between the Sprocket 

Cover and the side guide (see Figure 10). Insert the formed end of a Shaft 

into the hub of the sprocket inside the Sprocket Cover Assembly and, 

while maintaining the gap, hold the Shaft horizontally so that it overlaps 

the hub of the Paratrak, and mark the Shaft opposite the centre of the 

nearest hub screw (see Figure 11). 

Cut the Shaft at that mark and de-burr the sharp edge with a fi le. Slide two 

Bearing Brackets onto the shaft, clip them into the bottom rail (as in Figure 

12) and push the end of the shaft into the Output Shaft.

Figure 3

Step 3

Securing the Chain to the triangular support bracket

Again, starting on the left side, mark the drilling position on the upper 

fl ange of the triangular support bracket as in Figure 4. Centre-punch and 

drill a Ø4.5 mm hole.

Refer to Figure 5. Near the top end of the chain, choose a chain link such 

that, when an M4 Socket Head Cap Screw is pushed through that link and 

through the Ø4.5 mm hole in the triangular support bracket, a washer and 

an M4 Nylok Nut can be fi tted, leaving suffi cient thread on the bolt so that 

the chain may be tensioned. For now, take up the slack. Repeat for the 

right side.

Step 4

Mounting the Paratrak and the Battery Box

With the foot of the door 

opened to waist height, 

measure and mark the 

horizontal mid-point of the 

door just above the bottom 

rail. Position the Paratrak unit 

with its output stage centred 

on the mid-point of the door, 

and its underside touching 

the aluminium bottom rail.
Drill through the upper-right 

mounting bush with a Ø6 mm 

bit.
Reach under the bottom rail 

and push an M6 Cup Square 

Bolt through the hole and the 

mounting bush, and fi t an M6 nut, fi nger-tight. Now, with the Ø6 mm bit, 

drill through the remaining three mounting bushes. Remove the unit from 

the door and enlarge all the holes with a Ø7 mm bit. Refi t the unit using 

four M6 Cup Square Bolts and M6 Nuts, tightening them with a 10 mm 

socket nut-driver until the heads are fl ush on the outside.

Step 5

Battery Box

Hold the Battery Box (without 

batteries) against the door 

to the left of the Paratrak 

with its feet standing on the 

bottom rail, with a 30 mm gap 

between the two. 
In this position and on the 

right of the box, drill through 

the mounting bush that best 

suits the corrugation of the 

door with a Ø6 mm bit. As 

above, fi t an M6 Cup Square Bolt and nut, fi nger-tight. Drill through the 

corresponding mounting bush on the left. Remove the Box and enlarge 

the holes with a Ø7 mm bit. Secure the Box with two M6 Cup Square Bolts 

and nuts, tightening them with a 10 mm socket nut-driver until the heads 

are fl ush on the outside. 

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

The Paratrak drives the door symmetrically by 

means of chains and sprockets, applying the 

force symmetrically to both ends of the bottom 

rail, ensuring smooth and even operation. 

Optional receiver 

terminals

Controller 

socket

Curly cord 

socket

Battery 

plug

Motor 

socket

Auto close link

Button

Force adjustment

Beam link

A video is 

available on our 

website to assist 

you with this 

installation.

As in Figure 3, engage the pin at the end of the chain in the ‘V’ of the Chain 

Anchor. Ensuring that the chain is between the wall and the sprocket in the 

cover, place the Chain Anchor over the screw plugs and fi t two Ø6 Coach 

Bolts with Body Washers. At this stage, leave the bolts loose enough to 

allow the Chain Anchor to move (‘Float’) freely. Repeat for the right side.

Figure 12

Sprocket housing 

assembly

Chain

Outer bearing 

bracket

Bottom 

rail

Inner bearing 

bracket

Left drive 

shaft

Front 

Wall

Doorway

Left Hand 

Track

Dimension ‘B’ 

may vary from 

18-22mm

40

‘B’

Dimension ‘A’ may 

vary from 22-25mm

‘A’

Roll-up Door

Top View

Triangular 

Bracket

Ø4.5

23

48

Doorway

Front 

Wall

Top Chain Fixing 

and Tensioner

Chain

Left 

Chain

Drive 

Shaft

Sprocket 

Housing

Chain Anchor

right side

Bearing Bracket

2 each side

Paratrak Unit

mounted to the door

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