POLYURETHANE
MACHINERY
CORPORATION
PH-2 SERVICE MANUAL
6. INSTALLATION
6.2 HOSE HEAT TRANSFORMER
The Hose Heat Transformer offers the ability of connecting to different output voltages
depending on the total length of the Heated Hose in use, maximizing the heating
ability of the Heated Hose. The factory setting is 18 volts for use with 60 feet
of Heated Hose. Before starting the Proportioner, ensure the setting matches the
Heated Hose length installed. If Heated Hose sections are added or removed, the Tap
setting should be changed to a setting which will limit the maximum amperage in the
Heated Hose to 52 amps. The suggested settings are listed in the table below.
RECOMMENDED TAP SETTINGS
Tap Feet Meters
120V 410 125.0
105V 360 109.7
90V 310 94.5
75V 260 79.5
60V 210 64.0
45V 160 48.8
30V 110 33.5
18V 60 18.3
Figure 9: Transformers
*90V transformers (shown above) allow for a maximum hose length of 310 ft (94.5 m).
120V transformers allow for a maximum hose length of 410 ft (125 m).
REVISION 1.2 21
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