H-20/35 VR Series Proportioning Unit
32
42942-VR-1, Issue 1
b) Turn ON power to the Hose Heat System and adjust the Hose Heat Power Set
(clockwise) to between 45 and 50 Amps;
If hose heat is restored, then the fault is within the Gun Whip.
If hose heat is not restored, adjust the Hose Heat Power Set counterclockwise until
the Ammeter reads zero, then turn OFF power to the Hose Heat System and proceed
with the Steps below:
IMPORTANT: READ FIRST BEFORE PROCEEDING
Always reduce the Hose Heat Transformer voltage by adjusting the tap setting
LOWER to match the shorter hose length each time an additional hose segment is
unplugged.
Hose Length (feet)
Voltage
35 15
60 15
110 30
160 45
210 60
260 75
c) Adjust the tap
settings of the Hose
Heat Transformer to
match the next
shortest length of
heated hose (see
chart).
310 90
d) Unplug the next set of Power-Lock™ Connectors and plug the Hose Jumper
Plug into the last “upstream” segment of hose.
e) Turn ON power to the Hose Heat System and adjust the Hose Heat Power Set
to between 45 and 50 Amps;
If hose heat is restored, then the fault is within the last unplugged segment of hose;
If hose heat is not restored, adjust the Hose Heat Power Set counterclockwise until
the Ammeter reads zero, then turn OFF power to the Hose Heat System and repeat
Steps c) through e) until the fault is located.
10. MANUAL HOSE HEAT CONTROL-
It is possible to bypass the Hose Heat
System and operate the Hose Heat
System manually. This feature allows
for continued operation of the Hose
Heat System in case of signal or SSR
failure. To convert to manual control,
proceed as follows:
a) Turn OFF the red Main
Disconnect. Open the transformer
cover plate. Remove the terminal
jumper strip located near the SSR.
Install it across terminals #1 and
#2 on the Hose Heat SSR.
Figure 16. Terminal Jumper Strip
Installation
NOTE:
The Hose Thermometer (P/N 0928)
will read approximately 20
°
F lower
than the actual temperature inside
the hose.
b) Manual Hose Heat control requires the installation of a Hose Thermometer.
Insert the thermometer through the sponge so that the stem follows the twist of
the hoses and lies between the butyl inner hose and the outer sponge insulation.
This gives the most accurate temperature indication. The thermometer should be
located toward the gun end in a position where the operator can see it while
spraying.