DeLUX DPX12T, Руководство по установке и эксплуатации

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Gas Electro-mechanical Valves
w w w . m a x o n c o r p . c o m
combustion systems for industry
Maxon reserves the right to alter specifications and data without prior notice.
© 2009 Copyright Maxon Corporation. All rights reserved.
10 - 30.1 - 32
E - m - 10/09
Actuator assembly rotation
1. Shut off all electrical power and close off upstream manual cock.
2. Remove terminal block cover plate and disconnect power lead wires. (Tag carefully for later re-assembly.)
3. Remove conduit and electrical leads.
4. Note physical position of any signal switch actuator wands on auxiliary signal switches.
5. Unscrew the two actuator bolts screwed up from the bottom to 6 mm. DO NOT completely remove. These bolts secure the
valve body to the valve’s top assembly housing.
6. Gently lift the top assembly (not more than 6 mm in height); just enough to break the seal between the valve body assembly
and the rubber gasket adhering to the bottom of the top housing.
7. Remove the two actuator bolts screwed up from the bottom (were partially unscrewed in step 5).
8. Carefully rotate top assembly to the desired position in a plane parallel to the top of the valve body casting. Rotate the top
housing about 30° beyond this position, and then rotate it back. Reposition the top housing back down onto the valve body
casting. This should align the open/shut indicator with its window and provide proper alignment of the internal mechanism.
9. Realign holes in valve body casting with the corresponding tapped holes in the bottom of the top assembly housing. Be sure
the gasket is still in place between the body and top housing.
10. Reinsert the actuator bolts up from the bottom through the body and carefully engage threads of the top assembly. Tighten
securely.
11. Reconnect conduit and electrical leads, then check that signal switch wands are properly positioned and that the open/shut
indicator moves freely. Failure to correct any such misalignment can result in extensive damage to the internal mechanism of
your valve.
12. Energize valve and cycle several times from closed to full open position. Also electrically trip the valve in a partially opened
position to prove valve operates properly.
13. Replace and secure terminal block cover plate and place valve in service.
MAXON electro-mechanical valves should be ordered in a configuration compatible with planned piping. If
valve orientation is not correct, the actuator assembly can be rotated in 90° increments around the valve
body centerline axis using the procedure below.
WARNING: Lifting too far may dislodge some small parts inside the top housing, requiring complex re-
assembly and retesting by trained factory personnel.