Pyromation Series 642 - Manual (Page 12)

Wiring Series 642
12 Pyromation, Inc.
4.5 Degree of protection
The device conforms to the requirements to IP 67 ingress protection. In order to fulfil an IP 67
degree of protection after installation or service, the following points must be taken into
consideration:
• The housing seals must be clean and undamaged before they are replaced into the sealing rebate.
If they are found to be too dry then they should be cleaned or even replaced.
• All housing screws and covers must be pulled tight.
• The cables used for connection must be of the correct specified outside diameter (e.g. M20 x 1.5,
cable diameter from 8 to 12 mm; 0.315 to 0.47 in).
• Tighten cable gland (
→ å 6).
• Loop the cable before placing into the cable entry ("Water sack",
→ å 6). This means that any
moisture that may form cannot enter the gland. Install the device so that the cable entries are not
facing upwards.
• Cable entries not used are to be blanked off using the blanking plates provided.
• The protective olive must not be removed from the cable gland.
Fig. 6: Connection hints to retain IP 67 protection
4.6 Connection check
After the electrical installation of the device, always perform the following final checks:
Device condition and specification Hint
Are the device or the cables undamaged (visual check)? -
Electrical connection Hint
Is the cable installation correctly separated, with no loops or crossovers? -
Are the cables load relieved? -
Have the cables been correctly connected? Compare with the
connection schematic on the terminals or
→ Fig. 5.
See connection schematic on the
housing
Are all terminal screws tightened?
Is the cable entry sealed?
Is the housing cover screwed tight? Visual check