pick heaters 6X7 - Page 6

PICK VARIABLE FLOW SERVICE MANUAL
6
Steam control valves
is FULL OPEN
(continued)
Temperature rise may be
greater than originally
specified
Adjust heater operating
demand to original
specifications. Consult
factory for upgrade to a
different heater or
steam valve if demand
can’t be altered
Plugged steam strainer
basket
Remove steam line
basket, empty debris,
flush basket and re-
install
22
Deposit accumulation on
injection tube
Clean injection tube.
Contact factory for
possible alternate
materials
14
Damaged injection tube Disassemble and
inspect injection tube.
Repair injection tube or
return to Pick Heaters
for complete re-
conditioning.
12-13
Steam boiler or pressure
reducing valve (PRV) set
lower than specified
Increase steam supply
pressure at boiler or
PRV. Consult Pick
Heaters for re-sizing of
steam valve.
23
Steam boiler undersized Confirm boiler output,
and overall steam
requirements.
Steam supply valve NOT
FULL OPEN
Confirm that all steam
supply valves are open
Steam supply piping or
components are undersized
or restricted
-Check for restrictions
in steam supply piping.
-Upgrade supply pipe
size (see “Steam
Supply” section for
steam line sizing
calculations)
See
Installation
Manual
22
Water pressure is too high
Supply pressure higher than
design
Water pressure reducing
valve is set too high
-Install pressure
reducing valve
-Consult factory
-Reduce setting
23
PROBLEM: Heater will not heat liquid to the desired temperature.
OBSERVATION PROBABLE CAUSE ACTION PAGE
Pump not circulating water Inspect and repair
pump as necessary
See parts list