13
SEMPELL SERIES STE 4 CONTROL DEVICE FOR SAFETY VALVES
Operating instructiOns
7.7 Replacing (or cleaning) of the filter F
During these works close the air supply of the
control unit.
Procedures
• Disconnect power supply by means of the
key operated switch. Shutoff pressure
regulatorR1 by turning the handwheel
anti-clockwise.
The lifting and loading air of the pneumatic
actuator is temporarily switched off; the safety
valve remains fully operational.
7.9 Instructions for transport
The control device STE 4 will be delivered
mounted on a frame and with closed
connection inlets.
The transport of the control device shall be:
• lying on a pallet with the fixing frame
(inspection window at the top side) with a
vehicle or
• hanging in a crane fastened with hoisting
bands fixed to the frame at the outside
(inspection window at the top side).
Disassembly
The maintenance unit including filter F is
installed into the pneumatic control unit A163.
• Loosen threaded pipe elbow at the
pressure regulator R1 from the inlet line
(SW32,SW36).
• Detach four allen bolts size 4 mm at the
pressure regulator R1 and remove the whole
maintenance unit (pressure regulator R1 and
filter F). In doing so, do not loosen gasket
ring.
• Loosen the 4 cross-slotted bolts at the
maintenance unit and at the same action
block the hexagonal nuts. Remove bottom
cover.
• After loosen the hexagonal screw size 10 mm
with plate it is possible to remove the filter.
Clean or replace filter if necessary (see also
section 6.1).
Installation
The installation takes place in reverse order.
Observe the flow direction arrows at the upper
and bottom part while assembling.
After assembly restore control pressure and
power supply.
Procedures
• Adjust control pressure at the pressure
regulator R1 to the previously registered
value by moving up and turning clockwise
the regulator handle. Read the pressure at
the gauge. Moving down the regulator handle
secures the adjustment.
• Close front door of the pneumatic control
unit.
• Restore power supply with key operated
switch. Close the front door of the electric
switch unit.
• Indicator: white control lamp “Operation”
shines.
7.8 Ordering of spare and reserve parts
For spare parts storage or spare parts ordering
see spare part list section. 9.1.
For an order following details are necessary:
• Job and position number of the manufacturer
(see section 3)
• Type (see section 3)
• Part-no., quantity, part name and so on (see
section 9.1)