
HL Series Electric Linear Actuator  
Installation Operation & Maintenance Manual 
Doc No. : HumG-HL-21 Rev2            Page  4 / 26  Valve Automation Leader, HKC 
2.1.2. Applied Standard 
① [IEC60079-0:2017(Ed.7.0 +IS01,  EN60079-0:2012 +A11-2013 
② IEC60079-1:2014 (Ed.7),    EN60079-1:2014 
③ IEC60079-31:2013(Ed.2),    EN60079-31:2014 -------------- 20 Rev0] 
2.1.3. Certification 
① [IECEx: for HL-05kN ~ HL-25kN, IECEx EPS 18.0123X 
Ex db IIB T4 Gb, Ex tb IIIC 135’C Db, Ta -20℃ to +60℃, 
② ATEX: for HL-05kN ~ HL-25kN, EPS 18 ATEX 1 246 X, CE 0344 
II 2 G Ex db IIB T4 Gb, II 2 D Ex tb IIIC 135’C Db, Ta -20℃ to +60℃  
③ KCs(KOSHA) for standard type HL-05/07kN with LCU Unit, 10-AV2BO-XXXX, 
        for standard type HL-10/12/15kN with LCU Unit, 10-AV2BO-XXXX,  
        for standard type HL-18/20/25kN with LCU Unit, 10-AV2BO-XXXX,  
        Ex d IIB T4, -20℃ ~ +60℃  
KCs(KOSHA) for standard type HL-05/07kN with LCU Unit, 10-AV2BO-XXXX, 
        for standard type HL-10/12/15kN with LCU Unit, 10-AV2BO-XXXX,  
        for standard type HL-18/20/25kN with LCU Unit, 10-AV2BO-XXXX,  
        Ex tD A21 IP6X T135℃  
④ EAC: 1Ex d IIB T4 Gb X, -60℃ ~ +60℃ ----------------------------- 20 Rev.0] 
⑤ [CCC: Ex d IIB T4 Gb, Ex tD A21 IP6X T135℃, CNEX 2021 3123 0700 0206 ------- 21 rev1] 
  
Notes : 
 Sealing devices must be used and shall be fitted directly at enclosure wall when using conduit. 
 Cable glands shall be suitable for the environment and shall be certified as flameproof if used in Zone 
1 application. 
 Cable glands and conduit to be installed minimum 6 full threads and the length of thread is minimum 
8mm.  
 Temperature of cable entry is maximum 100℃. Heat resistance wire is recommended when you install. 
 Ex db and/or Ex tb certified cable glands suitable for 100℃ must be used.  
 Users should confirm all information about dimensions of flamepath with the manufacturer 
 All information about the material and the allowance of LCU fasteners 
-  Fasteners with yield stress≥ 210MPa (stainless steel) 
-  [Bolts type : M6*1.25, M8*1.25, M10*1.5, M12*1.75 (Tolerance Fit 6g) ---- 20 Rev0] 
 Cable connection : Refers to the Appendix Ⅱ (Wiring Diagram) 
 For cable entries or conduit entries that are not used, user or installer shall close by certified blanking 
elements(stopping plugs) so that the flameproof properties of the enclosure are maintained. 
 Always  ground  the  enclosure  in  accordance  with  local  electric  codes.  The  most  effective  enclosure 
grounding  method  is  a  direct  connection  to  earth  ground  with  minimal  impedance.  Methods  for 
grounding the enclosure include:  
-  Internal ground connection : The internal ground is located in the terminal block #1. Refer to the 
enclosed wiring diagram. 
-  External ground connection : The ground lug is located on the centre of cable entries. 
-  For more information, refer to the Appendix Ⅲ (Grounding)  
 [Stainless steel name plate for the flame proof and dust ignition proof type shall be permanently attached 
by rivets on the cover. ----- 20 Rev0] 
2.2. Initial inspection 
When the user receives the actuators, inspect the condition of the product and ensure the name plate 
comparing with order sheet. 
2.2.1. Remove packing wrap or wooden box carefully. Inspect the product for any physical damage that 
may have occurred during shipment. 
2.2.2. Check  the  product  specification  with  product  ordered.  If  an  wrong  product  have  been  shipped, 
immediately inform to our coordinator. 
2.3. Storage 
Actuators  must  be  stored  in  a  clean,  cool  and  dray  area.  The  unit  should  be  stored  with  the  cover 
installed and the cable entry openings sealed. Storage must be off the floor, covered with a sealed dust 
protector. When actuators are to be stored outdoor, they must be stored off the ground, high enough to 
prevent from being immersed in water or buried in snow.