Vapac

Listing Results Vapac

Frequently Asked Questions

• Is the controller output referenced to ground at VAPAC?

  NB if the controller output is referenced to ground, it is important that the “leg” which is connected to ground at the controller is also connected to ground at the Vapac unit. Grounding the opposite “leg” will cause damage to the controller and/or the Vapac control PCB. Important Maintenance Items

• What should I check before commissioning a VAPAC unit?

  Before commissioning the unit, check that all electrical (power) connections - including those at the terminals and contactor are tight. Check that the transformer primary winding connection is correct for the supply voltage at Vapac terminals A1 & A2.

• Can a VAPAC transformer be used on a UPS unit?

  The Vapac transformer must not be used to power other equipment. To comply with EMC aspects see recommendations on page 10. Do not mount the 'LE' unit close to a source of strong electromagnetic emissions, such as a variable speed motor drive, Kva transformer, or 'UPS' unit.

• What kind of conductors do you use for VAPAC?

  Vapac only recommend the use of UL recognized stranded copper conductors, adequately sized for the unit - The use of aluminum conductors is not recommended. Before commissioning the unit, check that all electrical (power) connections - including those at the terminals and contactor are tight.

• What are the restrictions of using a VAPAC transformer to power other equipment?

  The Vapac transformer must not be used to power other equipment. To comply with EMC aspects see recommendations on page 10. Do not mount the 'LE' unit close to a source of strong electromagnetic emissions, such as a variable speed motor drive, Kva transformer, or 'UPS' unit.

• What are the things to check before commissioning a VAPAC unit?

  Before commissioning the unit, check that all electrical (power) connections - including those at the terminals and contactor are tight. Check that the transformer primary winding connection is correct for the supply voltage at Vapac terminals A1 & A2.

• What will happen if we ground the opposite leg of a VAPAC controller?

  NB if the controller output is referenced to ground, it is important that the “leg” which is connected to ground at the controller is also connected to ground at the Vapac unit. Grounding the opposite “leg” will cause damage to the controller and/or the Vapac control PCB. Important Maintenance Items

• What type of conductors are recommended for the VAPAC air conditioner?

  Vapac only recommend the use of UL recognized stranded copper conductors, adequately sized for the unit - The use of aluminum conductors is not recommended. Before commissioning the unit, check that all electrical (power) connections - including those at the terminals and contactor are tight.