Spirax Sarco SP7-10 User manual

IM-S51-09 CTLS Issue 1 1
SP7-10, SP7-11, SP7-12, SP7-20, SP7-21, SP7-22 and SP8-10
3440755/1
SP7-10, SP7-11, SP7-12,
SP7-20, SP7-21, SP7-22 and SP8-10
Installation and Maintenance Instructions
IM-S51-09
CTLS Issue 1
© Copyright 2022
Operators must wear ear protection when commissioning the positioner
Copyright © Spirax-Sarco Limited 2022
All rights reserved
Spirax-Sarco Limited grants the legal user of this product (or device) the right to use the Work(s)
solely within the scope of the legitimate operation of the product (or device). No other right is
granted under this licence. In particular and without prejudice to the generality of the foregoing,
the Work(s) may not be used, sold, licensed, transferred, copied or reproduced in whole or in
part or in any manner or form other than as expressly granted here without the prior written
consent of Spirax-Sarco Limited.

IM-S51-09 CTLS Issue 1
2
SP7-10, SP7-11, SP7-12, SP7-20, SP7-21, SP7-22 and SP8-10
Replacing the filter element
The digital positioner is equipped with a supply air filter that can collect small amounts of contaminants.
The supply air filter prevents the digital positioner’s sensitive pneumatic components becoming clogged or
damaged.
Note
The supply air filter is not a substitute for the required supply air treatment in accordance with DIN/ISO
8573-1. If the supply air is contaminated, the supply air filter can become clogged and must be replaced.
Fig. 1 Note SP8-10 shown for reference.
Risk of injury from pressurized components
The screw plug and the filter insert can be ejected if the screw plug is loosened when the
pressurized air is switched on.
Only ever loosen the screw plug when the positioner is depressurized and vented.
Filter insert Screw plug Filter element (sieve) in the supply air inflow
1
2
3
3
1 2
Replacing the supply air filters

IM-S51-09 CTLS Issue 1 3
SP7-10, SP7-11, SP7-12, SP7-20, SP7-21, SP7-22 and SP8-10
Replacing the filter insert
1. Disconnect the supply air to the positioner and vent the positioner.
2. Loosen the screw plug using a screwdriver.
3. Remove the contaminated filter insert using tweezers.
4. Replace the new filter insert as depicted.
-Ensure that the filter insert is aligned correctly.
-Ensure that the O-ring sits in the housing of the SP7* correctly and is undamaged.
5. Hand-tighten the screw plug using a screwdriver.
6. For the SP8-10, also check the filter element (sieve) in the supply air inflow for contamination and damage.
7. Power-up the supply air to the positioner and check all screw connections you loosened for tightness.
Fig. 2 Note SP7-10 shown for reference.
Filter insert Screw plug
1 2
12

IM-S51-09 CTLS Issue 1
4
SP7-10, SP7-11, SP7-12, SP7-20, SP7-21, SP7-22 and SP8-10