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Page 8                                                                                                                                                                                                 IM-783

Removing and Replacing the Cover

The remote I/O panel cover is removable and provides a security screw that secures the cover in place.

Note:  

The security screw that ships with the remote I/O panel is a standard #10-32 machine screw, pan head, ½-inch Phillips.

You can replace this screw with a tamper-proof screw to provide a more secure installation. In addition, you can secure the
unit with a padlock through the security tab that protrudes through the cover.

Removing the cover of a Remote I/O Panel

Step 1. Loosen the security screw and open the cover.

Step 2. On the inside of the door, loosen and remove the nut and locking washer that secures the green grounding strap to the
cover.

Step 3. Pull the grounding strap off the screw post.

Step 4. Replace the locking washer, then the nut on the screw post, and tighten.

Step 5. Close the door about half way.

Step 6. Slide the cover toward the top of the unit until the tops of the hinge tabs on the cover hit the top of the hinge slots on
the left wall of the metal enclosure.

Step 7. Slide the hinge tabs out of the slots.

Replacing the cover of a Remote I/O Panel

Step 1. Align the hinge tabs on the cover with the hinge slots on the left wall of the metal casing.

Step 2. Slide the hinge tabs into the slots and slide the door toward the bottom of the unit, until the bottom of the hinge tabs hit
the bottom of the slots.

Step 3. Loosen and remove the nut and locking washer on the grounding strap post on the door.

Step 4. Slide the ground strap onto the screw post and replace the locking washer, then the nut, and tighten.

Step 5. Close the door and tighten the security screw.

Summary of Contents for MicroTech II IM 783-1

Page 1: ...Installation Manual IM 783 1 Group Controls Part Number IM 783 1 Date February 2005 Supersedes IM 783 0 MicroTech II TM Remote I O Panel Installation Manual...

Page 2: ...the Cover 8 Removing the cover of a Remote I O Panel 8 Replacing the cover of a Remote I O Panel 8 Field Wiring 9 Power Wiring 9 About the Transformer 9 Making the Power Connection to the Transformer...

Page 3: ...ay and MicroTech II from McQuay International Reference Documents Company Number Title Available At McQuay International OM 780 MicroTech II Chiller System Manager Operation Manual www mcquay com McQu...

Page 4: ...ounted in the field They can also be purchased pre mounted in a remote I O panel ready for wall mounting A remote I O panel may have from one to four remote I O modules The number of modules per panel...

Page 5: ...250 m of the nearest LONWORKS device other devices can be the CSM a chiller another remote I O module etc This typical node to node distance can be increased to a maximum of 8855 ft 2700 m by using th...

Page 6: ...anel Mounting Guide 11 375 28 89cm Mount with this end up Lower mounting holes are 0 221 0 56cm dia Clearance for a 10 screw 438 1 11cm 218 0 55cm 406 1 03cm DETAIL KEYHOLE Upper Mounting Note Drawing...

Page 7: ...ENING 3 MOUNT ONLY IN POSITION SHOWN TRANSFORMER AT TOP 4 DO NOT BLOCK AIR FLOW BEHIND UNIT 5 DIMENSIONS ARE IN INCHES MM 3 4 CONDUIT KNOCKOUTS 5 TOTAL THIS SIDE 1 2 CONDUIT KNOCKOUT FOR AC POWER ENTR...

Page 8: ...rounding strap off the screw post Step 4 Replace the locking washer then the nut on the screw post and tighten Step 5 Close the door about half way Step 6 Slide the cover toward the top of the unit un...

Page 9: ...e noted about the remote I O panel transformer WARNING Improper wiring can cause severe personal injury or death All connections must be made in accordance with national and local electrical codes Use...

Page 10: ...60 Hz power to the two position terminal block provided using the information in Table 3 The transformer s primary wiring is factory wired to the terminal block for 240 VAC power If your power supply...

Page 11: ...g high voltage control wires to modules 3 and 4 through the top of the panel If the module s relay outputs will be controlling high voltage 230 Volt maximum devices bring high voltage control wires to...

Page 12: ...chless terminals on the module separated from the brown low voltage terminals The modules are mounted so that the orange high voltage terminals are directed toward the top and bottom of the remote I O...

Page 13: ...Service Pin button associated with the appropriate Remote I O device e g Remote I O A in the Remote I O table While the Service Pin timer is counting down the timer appears as a pop up box on the scr...

Page 14: ...of the metal enclosure becomes dirty you can wipe it with a damp cloth and mild detergent Parts List Standard replacement parts are listed in Table 4 and can be ordered from stock without restriction...

Page 15: ...ges must be prepaid The return of the part does not constitute an order for replacement Therefore a purchase order must be entered through the nearest McQuay representative The order should include pa...

Page 16: ...05 McQuay International www mcquay com 800 432 1342 This document contains the most current product information as of this printing For the most up to date product information please go to www mcquay...

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