MEDIGAP    
 
Materials  
Pump All stainless steel
Cistern Polypropylene
Valves Brass
Base Mild steel - Powder coated
Fittings Brass
Accumulator Mild steel with butyl membrane
and stainless flange

Wiring (Single Phase)
Wiring to pressure switch via fused spur 10A @240V - (by other)
See instruction manual for wiring details.
IF IN DOUBT CONSULT A QUALIFIED ELECTRICIAN

 Construction  
18 Ltr tank with air-gap supplying water to our MXHM204E Horizontal Multi-Stage Close coupled pump with a 20Ltr accumulator keeping the pressure within the system to a pre-defined level controlled by a pressure switch and a pressure gauge to help with monitoring.
Applications
For non-domestic quality water, to prevent backflow contamination of mains water supply whilst maintaining flow and pressure. Specifically designed for use in conjunction with dentist chairs
Operating conditions
MXHM204E
Liquid temperature from - 15 °C to + 110 °C.
Ambient temperature up to 40 °C.
Maximum permissible pressure in the pump casing: 10 bar.
Continuous duty.
Motor
2-pole TEFV, 230/1/50, Class F insulation, IP54 protection
Standards
IEC34, IEC38, IEC335-1, EN60335-1, IEC335-2-41, EN60335-2-41, IEC529, EN60529
Warranty
One year (as per our standard terms and conditions of sale)
  Performance Data  
 
3Phase 230 400 1Phase 230 P1 P2   Q                  
  A A   A kW kW HP m3/hr 0 1.5 2 2.5 3 3.5 4 4.5 4.25
MXH204E 2.8 1.6 MXHm204E 4.2 0.9 0.55 0.75 H (m) 45 42 40 37 34 30 25 21 18

Performance Curves are available from our technical sales office

  
     
 

Legislation Up-date

The ‘Medigap’ has been technically designed to feed water to up to three dentist chairs. The system incorporates a type ‘A’ airgap, which conforms to current legislation and to date has been accepted by all water inspectors who have been involved with the unit and it’s installation.

One section of the current legislation deals with ‘point of use’. As the manufacturer of the unit this section is largely out of our jurisdiction. Some water inspectors have however interpreted this matter to mean that the potential for cross contamination between dentist chairs may exist, and that therefore each chair must have it’s own ‘Medigap’ unit and must not supply any other service. 

We would suggest that you take up this matter with the inspector involved prior to installing a ‘Medigap’ unit or ensure that each chair is fitted with it’s own individual unit in every case.

Please do not hesitate to contact us should you require further advice or assistance.

  
  Installation Data
Please refer to the instruction sheet provided with the system. The unit is designed to operate automatically via a pressure switch D and accumulator F. The pressure switch is pre-set to cut-in at 3.0 bar and cut-out at 4.0 bar. For most applications this should not require adjustment. Should the settings need changing refer to the instruction sheet.
All electrical connections should be made as per fig.1. Do not switch on the power supply until installation pipe-work is complete and the cistern is full of water.		  
   
  NOTES - For cold water use only. Specifically designed for use in conjunction with the installation of dentist chairs. Fit a servicing valve at point B in accordance with regulations. We advise the installation of a throttling valve at point A to regulate the pump out-put.
IMPORTANT - The main weir E is provided to meet with type AB air gap requirements. It is important at point of installation to consider problems which may result in the event that water should spill over the weir. Keep away from electrical installations and other sensitive areas.