Test Mode; Display Mode Screen 3A – Service Reminder; Display Mode Screen 3B – Service Reminder; Display Mode Screen 3D – Valve Cycle Counter - Gardner Denver DGH Series Instruction Manual

Controller, except in the case of an alarm or service
reminder (see 5.b and 7.b in Alarm & Service Mode).
•
Display Mode is comprised of several screens (described
below). The controller automatically scrolls through the
screens, displaying each one for 4 seconds. The user can
override the 4 second time period and force the next screen
to be displayed by pressing S .
•
The screens are displayed in the following sequence: 1, 2,
3A, 4, 5, 6, 1, 2, 3B, 4, 5, 6, 1, 2, 3C, 4, 5, 6, 1, 2, 3D, 4, 5,
6, ... with the exceptions noted below.
7.10.1 Display Mode Screen 1 – Dew point class and cycle
type.
2: -40°C/-40°F
DEMAND CYCLE
7.10.2 Display Mode Screen 2 – Energy savings.
This screen is not displayed if FIXED cycle is selected.
ENERGY SAVINGS
XX%
7.10.3 Display Mode Screen 3A – Service reminder
(filters).
This screen is not displayed if 1 or 2 filter monitors are
detected.
HOURS TO SERVICE
FILTERS: XXXX
7.10.4 Display Mode Screen 3B – Service reminder
(desiccant).
HOURS TO SERVICE
DESICCANT: XXXX
7.10.5 Display Mode Screen 3C – Service reminder
(valves).
HOURS TO SERVICE
VALVES:
7.10.6 Display Mode Screen 3D – Valve cycle counter.
CYCLE COUNTER
XXXXXXX
7.10.7 Display Mode Screen 4 – Dryer outlet dew
point,(AUX2, analog input).
This screen is not displayed if jumper 3 is not installed.
OUTLET DEW POINT
±XX°C ±XXX°F
XXXX
7.10.8 Display Mode Screen 5 – Dryer inlet pressure,
(AUX3, analog input).
This screen is not displayed if jumper 4 is not installed.
7.10.9 Display Mode Screen 6 – Dryer inlet temperature,
(AUX3, analog input).
This screen is not displayed if jumper 5 is not installed.

7.11 Test Mode

•
Test Mode is active when the user exits Setup Mode after
selecting operation in MANUAL CYCLE.
•
Test Mode is comprised of eight screens (descriptions
follow the table below). Each screen corresponds to one of
eight program steps (described in the table below).
•
Press S to advance from one screen (program step) to
the next. Be sure to read and understand all cautions listed
with the screen (program step) descriptions.
•
If the temperature is below 40°F or the thermistor circuit is
open, the second line of the display will read "UNDER-
RANGE" instead of the temperature reading. (Refer to
screens 2, 3, 4, 6, 7, and 8.)
•
If the temperature is above 150°F or the thermistor circuit is
shorted, the second line of the display will read "OVER-
RANGE" instead of the temperature reading. (Refer to
screens 2, 3, 4, 6, 7, and 8.)
•
Upon entering Test Mode, the program can be at any one
of the eight steps.
•
To exit Test Mode:
1. Use S to manually advance the program to
step 1 or 5.
2. Press and hold E for 3 seconds to exit Test
Mode. The display switches to Screen 2 of
Setup Mode.
3. Use S to select DEMAND CYCLE or FIXED
CYCLE.
4. Press E to accept the selection and
activate Display Mode.
- 35 –
7. Controller – Level 2
INLET PRESSURE
XX BARG XXX PSIG
INLET TEMP.
XX°C XXX°F
a) The program must be set at step 1
or 5 to exit Test Mode.
b) Screen 9 is displayed for 3
seconds if the user attempts to
exit the program from step 2, 3, or
4.
c) Screen 10 is displayed for 3
seconds if the user attempts to
exit the program from step 6, 7, or
8.
7. Controller – Level 2