Replace drive belt and pulleys
The drive belt and pulleys are connected to the main motor and makes the paddles in the drum rotate, moving the coffee around inside the drum.
Contents
When to replace the drive belt and pulleys
Before you start
Tools required
Instructions
When to replace the drive belt and pulleys
The drive belt might get worn out by time or with improper alignment of the pulleys. You will notice this if you hear a clicking sound from the belt. This clicking sound will be at even intervals.
Before you start
DISCLAIMER
The information in this document is believed to be accurate and reliable. However, the manufacturer does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of the use of such information. The manufacturer is not liable or responsible for any problems arising from the attempted repair. The manufacturer reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. The manufacturer's products are not designed, authorized, or warranted to be suitable for use in applications where failure or malfunction can reasonably be expected to result in personal injury, death, or severe property or environmental damage. The manufacturer accepts no liability for inclusion and/or use of its products in such equipment or applications and therefore such inclusion and/or use is for the customer’s own risk.
SAFETY INSTRUCTIONS
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Make sure the roaster is turned off before starting any maintenance work.
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The power cord must be unplugged or the roaster fully isolated from the electrical supply before removing any panels.
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Read the instructions in full before starting work, and follow the steps as instructed below
Tools required
- Flat-head screwdriver, coin, or similar to open front door
- 2 mm hex key
- 2.5 mm hex key
- 3 mm hex key
- 5 mm hex key
- Narrow-nosed pliers
Instructions
Open the front door and remove the starboard side panel
See instructions here.
Remove the old drive belt and pulleys
Move the main motor driver out of the way and place it to the side.
See instructions here.
Use a 3 mm hex key to remove the 3 bolts holding the belt cover in place: 1 on top and 2 at the bottom.


Remove the belt cover and set it aside.

Use a 5 mm hex key to loosen the 2 bolts on the belt tensioner.

Remove the old drive belt.

Remove the pulleys
Use a 2 mm hex key to loosen the grub screw on the lower pulley. Slide the pulley off the shaft. If stuck, loosen the grub screw further.


Repeat this process for the upper pulley using a 2 mm hex key.


If the existing drive keys do not fit the new pulleys, pull them off with narrow-nosed pliers and install the new drive keys.


Install the new pulleys
Slide the lower pulley onto the shaft until it sits flush with the shaft.


Fasten the grub screw using a 2 mm hex key.

Install the upper pulley.

Fit the drive belt around the lower pulley first, then route it over the upper pulley. Rotate the upper pulley by hand to help guide the tight belt into position.

Align the upper pulley directly above the lower pulley, leaving a small space between the pulley and the alignment collar.

Tighten the grub screw using a 2 mm hex key.

Align the belt and tighten the 2 bolts on the belt tensioner using a 5 mm hex key. Proper belt tension allows you to twist the belt 90 degrees using your fingers.


Reinstall the belt cover and the main motor driver.
Finish up
Replace the side panels and secure with the four bolts.
Close the front door.