Nu-Way MDFL 3300, Руководство по установке и обслуживанию

Страница: 12 / 49

MDFL 3300 & MDFL 4000 Issue 2 08/08 Page 11
AIR DAMPER SERVOMOTOR : SINGLE SPILL-BACK NOZZLE BURNERS
Model : Landis & Staefa SQM 10
Factory Settings
Cam Function Setting
1 High Fire Air 160°
2
Gas
Firing
Low Fire Air 0°
3 High Fire Air 160°
4
Oil
Firing
Low Fire Air 0°
5
6
7
Not Used
Notes:
1. The servomotor operates both the air damper mechanism and the oil spill adjusting
valve via mechanical cam arrangements mounted on a common shaft within the
‘Modulating Cam Box’.
2. The operation and adjustment of the ‘Modulating Cam Box’ arrangement should be
fully understood before attempting to adjust the motor settings.
3. Cams 1 and 4 represent the low and high limits of the mechanism. These are
factory set and should not require further adjustment.
4. Cams 2 and 3 may be adjusted to give the correct related burner firing rates on gas
and oil.
5. The cam assembly can be rotated manually by disconnecting it from the drive motor
using the disengagement lever. The cams are adjusted with the special ‘C’ spanner
provided.