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TEC
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Specifications subject to change without notice. | USA 160811 | Page 34 of 34
MGC2 – UserManual
PolyGard
®
is a registered trademark of MSR-Electronic GmbH
6 Notes & General Information
It is important to read this User Manual carefully in order to understand the information and instructions. The
PolyGard
®
MGC2 gas monitoring, control and alarm system may only be used for applications in accordance to the
intended use. The appropriate operating and maintenance instructions and recommendations must be followed.
Due to permanent product developments, MSR-Electronic GmbH and IN
TEC
Controls reserves the right to change
specifications without notice. The information contained herein is based on data considered to be accurate. However,
no guarantee or warranty is expressed or implied concerning the accuracy of these data.
6.1 Intended Product Application
The PolyGard
®
MGC2 is designed and manufactured for controlling, for saving energy and keeping OSHA air quality in
commercial buildings and manufacturing plants.
6.2 Installer’s Responsibilities
It is the installer’s responsibility to ensure that all PolyGard
®
MGC2 are installed in compliance with all national and
local regulations and OSHA requirements. All installation shall be executed only by technicians familiar with proper
installation techniques and with codes, standards and proper safety procedures for control installations and the latest
edition of the National Electrical Code (ANSI/NFPA70). It is also essential to follow strictly all instructions as provided
in the User Manual.
6.3 Maintenance
All monitoring and control systems such as the PolyGard
®
MGC2 should be periodically recommissioned.
Recommissioning includes verifying that all field devices such as gas transmitters and fan controls are preforming to
their original specifications, that the system’s sequence of operation is fully functional, and that minimum ventilation
rates as required by local codes are being met. Common problems identified during recommissioning include sensors
that are out of calibration and fans that have been left in “hand” mode (manually off or manually on) either at the motor
control panel or in the gas controller’s configuration.
Recommissioning typically begins with verifying the measurement accuracy of a select number of gas transmitters
by presenting them with calibration gas and viewing the transmitter’s digital response. If all of the tested transmitters
are within their original specified accuracy, it is generally accepted that the remainder of the transmitters are also “in
calibration”. If any of the tested transmitters are “out of calibration”, those transmitters should be calibrated and the rest
of the transmitters in the system should be tested and calibrated as required.
The system’s sequence of operation is tested by presenting test gas to one or more transmitters in each fan control
zone and verifying that the fan is activated and de-activated according to the desired control parameters (start/stop
delay and minimum on/off time) – “bump testing”. If the system incorporates variable speed fans, the technician must
be able to verify setup parameters in the variable speed drive as well as the MGC2.
The re-calibration interval for a gas transmitter is highly dependent on the amount of the target gas that the transmitter
is exposed to over time. Refer to the transmitter manufacturer’s technical documentation for recommendations.
6.4 Limited Warranty
MSR-Electronic GmbH and IN
TEC
Controls warrants the PolyGard
®
MGC2 for a period of two years from the date
of shipment against defects in material or workmanship. Should any evidence of defects in material or workmanship
occur during the warranty period, IN
TEC
Controls will repair or replace the product at their own discretion, without
charge.
This warranty does not apply to units that have been altered, had attempted repair, or been subject to abuse,
accidental or otherwise. The above warranty is in lieu of all other express warranties, obligations or liabilities.
This warranty applies only to the PolyGard
®
MGC2. MSR-Electronic GmbH and/or IN
TEC
Controls shall not be liable
for any incidental or consequential damages arising out of or related to the use of the PolyGard
®
MGC2.
A return material authorization (RMA) must be obtained from IN
TEC
Controls prior to returning any product.
