Graco Therm-O-Flow Plus, Инструкция по эксплуатации

Страница: 16 / 82

16 309085
Installation
Heater Resistance Checks
WARNING
ELECTROCUTION HAZARD
To reduce risk of injury or damage to
equipment, conduct these electrical
checks with the main disconnect OFF.
To check heater resistance:
1. Make sure the power is off and that the disconnect
switch is in the OFF position.
2. Make electrical resistance checks for the compo-
nents. Refer to
Control Panel Component
Layout on page 74 for wiring diagram information.
3. Replace any parts whose resistance readings do
not comply with the ranges listed in Table 1.
NOTE: Check resistance at ambient room tempera-
ture (63
– 77
F).
Table 1. Heaters
Zone Component
Between
Terminals
For Unit
Voltage
Platen Model
Code
Resistance Values
(ohms)
1 Ram Plate 3L1 & 3L2 240 B–1 or B–3 6.4 ohms + .65 ohms
Heaters from
J–Box or
B–2 5.5 ohms + .55 ohms
J–Box or
Control Box
Not 240 B–1 or B–3 25.5 ohms + 2.6 ohms
B–2 22 ohms + 2.2 ohms
3L2& 3L3 240 B–1 or B–3 6.4 ohms + .65 ohms
B–2 5.5 ohms + .55 ohms
Not 240 B–1 or B–3 25.5 ohms + 2.6 ohms
B–2 22 ohms + 2.2 ohms
3L3 & 3L1 240 B–1 or B–3 6.4 ohms + .65 ohms
B–2 5.5 ohms + .55 ohms
Not 240 B–1 or B–3 25.5 ohms + 2.6 ohms
B–2 22 ohms + 2.2 ohms
Any leg to
ground
Any Any At least 70K ohms
2 Pump
Heaters from
T1 & TC 240 Any 38.4 ohms + 3.8 ohms
J–Box with
jumpers
installed
B1 & BC 240 Any 38.4 ohms + 3.8 ohms
installed
5L1 & 4L2 240 Any 38.4 ohms + 3.8 ohms
T1 & T2 Not 240 Any 153.6 ohms + 3.8 ohms
B1 & B2 Not 240 Any 153.6 ohms + 15.3 ohms
51 & 42 Not 240 Any 153.6 ohms + 15.3 ohms
3 thru 8 Check hose tag or valve manual for valve