Dielectric 2200ST SmartTech Modular Dehydrator - 11 Maintenance Procedures

on/off switch. Remove the water ll tting from
the passive air intake and add about one gallon of
water to the system. Replace the water ll tting
to the passive air intake. Start the dehydrator. After
the dehydrator has run for over a minute add water
between purge blasts as needed until water is ejected.
Replace the water ll tting before the purge cycle
ends. This veries that the water eject switch is
working properly.
11.0 MAINTENANCE PROCEDURES
WARNING: RISK OF ELECTROCUTION
– Disconnect fromelectrical power before
starting this proceedure. 11.1
11.1 While the dehydrator is running, press and
hold the manual Water Eject Switch (18). When the
dehydrator shuts down because of low water, turn
the front panel power switch (6) OFF and disconnect
from power source.
11.2 Turn the lter cap counterclockwise to remove
the cap. Remove the old intake lter and center the
new lter as the lter cap is tightened to the passive
air intake assembly.
11.3 From the back of the dehydrator, remove the
old cabinet lters from the cabinet. Slide the new
lter into the cabinet slots, completely covering the
heat exchanger ns.
11.4 CHANGING THE WATER FILTER
11.4.1 Place a container under the lter bowl (39)
to catch about two cups of water. Remove the Water
Filter bowl by turning it counter clock wise relative to
the lter top housing (as seen from below the bowl).
11.4.2 Wipe the bowl clean with a rag. A very light
coat of Vaseline on the sealing O-ring (41) will make
installation and removal easier. Install the new lter
element (40) and replace the lter bowl only hand
tight. The O-ring seals the bowl to the lter top
housing and overtightening makes the bowl difcult
to remove in the future.
11.4.3 Remove the water ll tting from the passive air
intake. Add water until the wire reinforced hose from
13
the compressor to the passive air intake is full. Install
the water ll tting back onto the passive air intake.
11.4.4 Reconnect the electrical service to the
dehydrator. Turn on the power switch to start the
dehydrator. After the dehydrator has run for over a
minute add water between purge blasts as needed
until water is ejected. Replace the water ll tting
before the purge cycle ends.
11.4.5 After the dehydrator has run for over 5
minutes, verify that the water level is near the center
oat switch in the oat tube assembly. Add water to
the system if the water level is near the low water
oat switch. Avoid splash back of water by adding
water to the system between purge blasts.
11.5 PURGE VALVE OVERHAUL
11.5.1 See g. 9, page 27 for purge valve exploded
view. Disconnect the harness wires from the purge
valve coil (7) wire connectors. Release the coil
retainer and set the coil aside. Loosen (do not remove)
the hex nut at the base of the stainless steel core tube
from which the coil was removed.
11.5.2 Remove the four hex bolts from the brass
valve body and lift off the brass bonnet. Remove the
diaphragm assembly, the core tube and the core tube
o-ring. Install the new core tube o-ring and new core
tube nger tight.
11.5.3 Remove the cardboard orice protector from
the new diaphragm assembly, hold the assembly with
the core pointing upward. Be sure the small spring is
positioned in the core with the spring cap (or the tightly
wound end of the spring) protruding from the core. Place
the bonnet and core tube down, over the diaphragm
assembly, so that the small spring is securely captive.
11.5.4 There is a small orice between the center and
the edge of the diaphragm. Locate this orice in the
upper part of the valve body (the outlet side of the
valve) and install the bonnet on the body. Tighten the
four bolts rst nger tight, then turn each one about
1/2 turn with a wrench, one after another, until each is
tightened to about 120 inch pounds of torque. Tighten
the core tube hex nut.