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Product #7740

 

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The Protected Junction Box may be used in place of the junction box supplied 
with your Davis Weather Monitor II

 

 

 or Weather Wizard

 

 

 

III

 

 

. The Protected 

Junction Box offers limited protection from radio frequency interference (RFI) 
and limited surge protection. It may be placed out of doors, but only if placed 
inside one of Davis’s shelters or other weather-proof enclosure. The cable run 
between the Protected Junction Box and the station console may be a maximum 
of 200' (60 m). 

This instruction manual takes you step-by-step through the process required to 
connect and mount your Protected Junction Box. Please take the time to read 
this manual before beginning the process.

 

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OMPONENTS

 

The Protected Junction Box includes the following components. Please make 
sure you have all listed components before continuing.

 

 

Protected Junction Box

 

 

Two 16.5-foot (5 m) Ground 
Wires (12 AWG)

 

 

Three #6 x 1” (25 mm long) 
Self-Threading Screws

 

 

Two Cable Ties

 

 

Four Adhesive Pads

Summary of Contents for Protected Junction Box

Page 1: ...oof enclosure The cable run between the Protected Junction Box and the station console may be a maximum of 200 60 m This instruction manual takes you step by step through the process required to conne...

Page 2: ...box from its mounting location Note Do not throw away your existing junction box The surge absorbers in the Protected Junction Box may blow if they absorb a direct or near lightning strike In this cas...

Page 3: ...y mount the Protected Junction Box against a wall or other vertical sur face or you may simply set it down on a horizontal surface 1 Remove the cover from the Protected Junction Box by pushing down on...

Page 4: ...unting surface Do not overtighten ATTACHING THE BASE TO THE MOUNTING SURFACE 3 If you plan to place the Protected Junction Box on a horizontal surface attach one of the adhesive pads to each of the fo...

Page 5: ...lities loosen the screw in terminal JP1 the lower left of the circuit board See Surge Protection on page 7 for more information 9 Place the spade lug at the end of the ground wire under the screw head...

Page 6: ...nction box cable and the ground wire from JP2 and secure them to the cable tie lug using a cable tie When tightening the cable tie make sure the cables are on top of the lug Note Even if you are not u...

Page 7: ...hen they are operating This is a normal indi cation that surges are being absorbed If the current load is too great surge absorbers will blow when blown they will appear black inside It is possible in...

Page 8: ...tively you may connect to a grounded metal cold water pipe Be aware that connecting JP2 to ground can cause measurement errors espe cially in temperature in some cases To correct the problem you shoul...

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