Manifold Flush System - Hussmann DSF Installation And Operation Manual

Manifold Flush System

Start-up
Turn on the fan circuit. Check to see if the fan for the humidity
system is running. Remove the right hand bottom pan (when
facing the front of the case), then the TXV cover. The fan is
located up against the right hand side of the case, as viewed
from the front, under the fan plenum (see diagram). View the
blade, and make sure the fan rotation agrees with the air flow
arrows. Turn on the water, by turning the ball valve in the
direction of the flow (OFF is at 90° to the direction of flow).
After a few minutes, check the spray header by sliding the
honeycomb to the left to expose the discharge tube located on
the right hand side of the case (when viewed from the rear),
by lifting the 4'-0" section of honeycomb with both ends, until
the bottom clears. Pull up and set aside. The spray header
will be exposed. Grasp the header and pull it loose from the
90° "L" until you see the misting nozzle, which should be
spraying. If not, check the following:
1. Make sure the water is feeding the nozzle.
2. Remove the nozzle, and purge the water.
3. Check strainer at entrance to nozzle.
Reinsert the header into the 90° "L", making sure that the
nozzle is in the center of the pipe when totally inserted, and
the holes in the header are facing the front of the case at
a level angle. The discharge tube can easily be pulled to
service.
Maintenance
• Clean humidity system a minimum of every 90 days for
proper system operation.
SPRAY HEADER
SCOTTDALE NOZZLE
RUNS LENGTH
225-01-2089A
OF CASE
REAR INTERIOR WALL OF CASE
VIEWED FROM FRONT
1/4"MPT X 1/4" COMP
PVC ADAPTER
225-01-2026
WATER
SUPPLY
1/4"MPT X 1/4" OD
WATER FILTER
BALL VALVE
COMP ADAPTER
3 STAGE #00015
225-01-1312 HAMMON
225-01-2026
225-01-2026
HUMIDITY SYSTEM as viewed from the front.
The axial fans included in the humidity system must be
Note:
replaced as a unit.
1/4" 100 X 1/8FPT
SW ADAPTER
1/4" OD X 1/8" FPT
SW ADAPTER
225-01-3059
1/8" MPT X 1/4" COMP
PVC ADAPTER
225-01-3059
PAN AND
ACCESS PANEL
3" AXIAL FAN
2ND FAN USED
225-01-2026
IN 12' CASE
General Description
Twice a day for two (2) minutes, a high pressure water
stream will flush most residue build-up from the bottom of
the manifold chamber. This is the area that residue builds
and expands from. Frequency of this periodic maintenance
will vary depending on water mineral content and sanitary
conditions.
Automatic Flush System
Electrical components are located within the electrical
raceway. Electrical components in this area are 115V
AC. Step-down transformer is located in wire-way, and is
controlled by pump switch. Water flow for flush system is
rated at 0.25 GPM at 60PSI water pressure. Flush nozzle
located in the rear of the case.
Basic System Operation:
1. Filtered water is supplied to the 115V solenoid valve.
2. At a time of day determined by you, the 115V time
clock will energize the solenoid for 2 minutes.
Start Up:
1. Manually move time clock to initiate a flush cycle.
2. Observe that flush nozzle is spraying down center of
manifold chamber.
3. Set clock to correct time of day.
4. Set trip pins to the "time of day system is to flush"
(NOTE: 2 flush/day!)
Manual Flush System
Water valve is located on the outside of the case, in the rear,
on the left hand side as viewed from the rear.
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