6-11
Routine Maintenance
Operator Manual
122998-741
6.6 Yearly
Maintenance
6.6.1 Heat Exchanger Control
Adjustments
Washer is equipped with a steam heat exchanger and valving sys-
tem to preheat fill water.
Fill water temperature can be controlled by adjusting throttling valves
which regulate flow of steam and hot water through heat exchanger.
1.
Completely close steam throttling valve and fully open building
hot water supply throttling valve (see Figure 6-5).
2.
Drain chamber sump by selecting function from Manual Menu
and pressing
CYCLE/START
touch pad.
3.
After display screen indicates that sump is empty, select FILL
function from Manual Menu and press
CYCLE /START
.
4.
Verify reading on heat exchanger temperature gauge. Gauge
indicates temperature of fill water after water passes through
heat exchanger.
5.
Slowly open steam throttling valve until temperature gauge reads
desired temperature.
NOTE: Recommended fill water temperature is 180 to 190°F (82
to 88°C).
6.
If gauge does not reach desired temperature after steam throt-
tling valve is fully open, slowly close building hot water supply
throttling valve until desired temperature is reached.
WARNING – PERSONAL INJURY
AND/OR EQUIPMENT DAMAGE
HAZARD: Only STERIS or
STERIS-trained service per-
sonnel should make repairs or
adjustments to this equip-
ment. Maintenance done by
inexperienced, unqualified
personnel, or installation of
unauthorized parts could
cause personal injury, invali-
date warranty, or result in
costly damage. Contact
STERIS regarding service
options.
WARNING – ELECTRIC
SHOCK HAZARD: Always set
building electrical-supply dis-
connect switch and console
master power switch to OFF
before performing any preven-
tive maintenance functions
within compartments. Electri-
cal shock can cause serious
injury.
WARNING – BURN HAZARD:
Pipes may be extremely hot.
Figure 6-5. Heat Exchanger Temperature Controls
Hot Water Globe Valve
Heat Exchanger
Temperature
Gauge