pick heaters 6X7 - Low Water Flow Rate; Overheated water or steam discharge; Temperature indicator doesnt agree with controller setting

PICK VARIABLE FLOW SERVICE MANUAL
10
PROBLEM: Low Water Flow Rate
OBSERVATION PROBABLE CAUSE ACTION PAGE
Supply failure from the
water source
Examine water supply
system, correct all
problems
Broken or plugged pipe
fittings, including check
valves, gate valves, strainer,
etc.
Inspect water supply
lines, replace plugged
or faulty components
Clean water strainer
basket (if applicable)
PROBLEM: Overheated water or steam discharge
OBSERVATION PROBABLE CAUSE ACTION PAGE
Temperature controller set
too high during initial setup,
or during a previous
operating session
Reset controller to the
desired temperature
-See installation
manual for calibration
procedure
Air pressure supplied to the
temperature controller too
high
Reset air pressure to 20
psi
Relief valve not functioning
properly
Inspect adjust or repair
as necessary
19-20
Particularly after
extended heater
shutdown
Lead in the steam control
valve
Inspect and repair as
necessary
20
PROBLEM: Temperature indicator doesn’t agree with controller setting
OBSERVATION PROBABLE CAUSE ACTION PAGE
Water temperature is
stable and satisfactory
Temperature controller not
properly calibrated
Re-calibrate
temperature controller
(See separate manual
for optional controllers)
21
PROBLEM: Discolored Water
OBSERVATION PROBABLE CAUSE ACTION PAGE
Problem in the supply water
system
Inspect water lines,
correct any deficiencies
Galvanic corrosion due to
dissimilar metals (between
heater and system piping)
Install dielectric unions
at all connections
between the heater and
copper piping
23
Problem in the steam supply
system
Examine the steam
supply system, correct
any deficiencies