18063 Rev E 06/17
(800) 234-4239
networketi.com
6 of 16
Environmental Technology, Inc.
Model EDH–4 Rev E Installation and Operation Manual
INSTALLATION
Unpacking/Packing
Immediately inspect the shipping container and packing material for damage. Unpack the EDH–4, taking
care not to damage the cushioning materials. Save the shipping container and related materials until normal
operation has been established.
Inventory List
Verify that the package contains the parts listed for EDH–4 version ordered.
Additional equipment required for installation
The EDH–4 comes equipped standard with a 1/4" hose barbed fitting which accepts 1/4" ID (inside
dimension) flexible tubing. Special fittings and tubing can be purchased from ETI: contact Customer Service
for details.
Initial Inspection
Inspect the EDH–4 for electrical and mechanical damage. Contact the Customer Service Department
if you find any of the following:
• Contents incomplete or incorrect per inventory list above
• Internal or external mechanical damage
• Desiccant is white (fully charged with moisture; refer to page 13 for renewal procedure)
• Defective operation; to test effective operation:
1. Attach power to the EDH–4
2. Seal outlet (plug, thumb or kink in hose)
3. Pump stops
4. LED display reads between 30 and 50
5. Remove “seal”: LED display reads 0 (zero)
6. Replace “seal”: LED display once again reads between 30 and 50
Customer Service is available between 8:00 a.m. and 5:00 p.m. EST (UTC minus 5 hours) at (574) 233-
1202 or (800) 234-4239. In the event of shipping damage, keep packing materials for inspection by the carrier.
Location
The rack mounted EDH–4 should be located reasonably close to waveguide and power. It needs suf-
ficient clearance around it to facilitate access to power, alarm relay and pneumatic connections.
The unit requires a relay rack panel space of 19" wide × 5.25" high (482.6mm wide × 133.4" high) for
WIDE applications or 13.63" wide × 5.25" high (364.1mm wide × 133.4" high) for NARROW applications.
Because the EDH–4 seldom requires operator attention, consider locating it in the lower portion or extreme
upper portion of the relay rack.
However, on those occasions when the EDH–4 requires operator attention for desiccant recharging or
replacement, consider a location convenient for this action.
QUANTITY
PART NUMBER
DESCRIPTION
1
18021
EDH–4 Rev A Dehydrator
1
18063
EDH–4 Instruction Manual (this document)
EDH–4
