Figure 7: Lid Assembly
To refit the Lid assembly;
1.
Place Lid Assembly onto the Solenoid Switch enclosure.
Note: No additional sealing elements or compounds (for example Silicon sealant) are required to refit and reseal the
Lid Assembly. Any additional materials or work may reduce IP level and will void Fortress warranty.
2.
Refit and tighten the 10 x M8 Torx screws in an even distribution. For example;
i. Half tighten screws in the order specified in Figure 7.
ii. Fully tighten screws in the order specified in Figure 7.
iii. Check and, if necessary, re-tighten screws in the order specified in Fix.2.
Note:
All M8 Torx lid screws must be fully refitted and tightened to a minimum torque setting of 20Nm to maintain IP
level. Note: It is recommended that all M8 Torx Lid screws be secured against tampering removal or loosening due to
vibration using a middle strength adhesive threadlocker.
3.
Fully test and operate the complete Alfred Solenoid Controlled Guard Lock to ensure correct function and operation. See
Mechanical Function Test section for more details.
If required, any replacement Lid assembly screws must be identical to those as supplied by Fortress and must be M8 x
14mm, property class of A2-70 with a minimum yield strength of 700 MPa to ISO 3506, ISO 262, ISO 965-1, and ISO 965-3.
FORTRESS
A company
Halma
www.fortressinterlocks.com
THE COPYRIGHT OF THIS DRAWING BELONGS TO FORTRESS INTERLOCKS Ltd.
THE CONTENT OF THIS DRAWING IS CONFIDENTIAL AND MUST NOT BE
DISCLOSED TO ANY 3rd PARTY WITHOUT SPECIFIC, WRITTEN APPROVAL.
ALL DIMENSIONS
ARE IN mm UNLESS
OTHERWISE STATED
A3
SCALE:
0.50
SHEET:
2 OF 3
ORIGINAL SIZE
DATE:
25-02-21
ISSUE:
0
ALFRED SAFETY SWITCH OPERATING INSTRUCTIONS IMAGES
DWG NO:
SD-00033
Operating Instructions: Alfred Solenoid Controlled Guard Lock
15
Electrical Connection and Installation
Tools and Fixings Required
Terminal Screwdriver.
Cable and Wiring selection requirements:
• All cabling and wiring used to connect and install the Alfred Solenoid Controlled Guard Lock must be of an equal or greater
level of ATEX and IECEx protection in order to maintain ATEX Device ratings (See ATEX, IECEx and HazLoc section for
Device rating and detail).
• Correctly rated and sized cable glands and connectors must be used in order to maintain the IP67 and IP69 protection
rating of the Ex Rated Solenoid module.
Note:
The conduit connection hole of the Solenoid Module is an M20 x 1.5mm pitch threaded hole.
• The cable and cable gland used must have a minimum service temperature in excess of 70˚C.
• The wire used to connect to the Internal Earthing point of the Solenoid Module (see Figure 11) must have a greater than or
equal cross-sectional area to that of the phase conductor wires.
Note:
The internal Earthing point shall be used for the Equipment Grounding connection.
• The wire or cabling used to connect to the External Earthing point of the Solenoid Module (see Figure 11) must have a
cross-sectional area of at least 4mm2.
Note:
The external Earthing point shall be used for a Supplementary Bonding Connection where local codes or authorities
permit or require such connection.
• Both the Internal and External Earthing wires must be secured and clamped so that they cannot be readily loosened or
twisted. This could be done using a U-Shaped Saddle Clamp or similar.
• All internal wiring for the Safety Circuits and Gate Monitor Circuits must be made using 24-16 AWG copper cable.
SWITCH ENCLOSURE
LID ASSEMBLY
M8 TORX LID SCREWS
