SAVE VTR 500 USER MANUALV1

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Maintenance
Warning
• Risk of injury due to rotating parts that have not come to a complete standstill after mains supply to the
unit have been disconnected.
Warning
• Beware of sharp edges during mounting and maintenance. Use protective gloves.
Fig. 3 Extract and supply air fans
The motor bearings are life time lubricated and maintenance free.
Even if the required maintenance, such as changing of filters is carried out,
dust and grease may slowly build up inside the fans. This will reduce the
efficiency.
The fans may be cleaned as illustrated in below procedure.
1. Stop the unit by disconnecting the mains.
2. Open the front hatch. See chapter 4.2.
3. Loosen the screws securing the side hatch and open it.
4. Disconnect the fan power cables. The cables are found beside the fans.
5. Remove the brackets.
6. Pull the fans towards you.
7. Clean the fans with a cloth or a soft brush. Do not use water. White spirit
can be used to remove obstinate deposits.
Allow the fans to dry properly before remounting.
8. Remount the fans.
9. Remount and tighten the brackets.
10.Don’t forget to reconnect the fan power cables.
11.Close and lock the front and side hatch and connect the unit to mains.
4.6 To replace the rotor drive belt
Fig. 4 Rotor drive belt
Danger
• Make sure that the mains supply to the unit is disconnected
before performing any maintenance or electrical work!
Warning
• Risk of personal injury! The heat exchanger weighs about 16
kg. There is a risk that the heat exchanger falls out of the unit.
• Make sure that small children are not beneath the unit when
the heat exchanger is removed!
If the alarm Rotor guard is raised the rotor drive belt may be damaged or
broken, see chapter 3.2.3.
A spare drive belt is already placed on the heat exchanger rotor and delivered
with the unit.
Temporary belt repair solution
1. Stop the unit by disconnecting the mains.
2. Open the front hatch. See chapter 4.2.
3. Remove the broken drive belt.
4. Use tape to attach the drive belt to the rotating heat exchanger, and rotate the exchanger by hand to get hold of the
drive belt.
5. Remove the tape and put the ”empty” end on to the nipple.
6. Press the ends firmly towards each other to secure the nipple.
7. Pull the drive belt on to the belt pulley and rotate the exchanger by hand. Check that the belt pulley rotates.
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