Goulds Pumps 3640 - IOM - Manual (Page 41)

Commissioning, Startup, Operation, and Shutdown
Oil requirements based on temperature
For the majority of operating conditions, bearing temperatures run between 120°F (49°C) and 180°F
(82°C), and you can use an oil of ISO viscosity grade 68 at 100°F (38°C). If temperatures exceed 180°F
(82°C), refer to the table for temperature requirements.
Temperature Oil requirement
Bearing temperatures exceed 180°F (82°C) Use ISO viscosity grade 100. Bearing temperatures
are generally about 20°F (11°C) higher than bear-
ing-housing outer surface temperatures.
Pumped-fluid temperatures are extreme Refer to the factory or a lubrication expert.
Acceptable oil for lubricating bearings
Acceptable lubricants
Brand Lubricant type
Ball/ball Sleeve/ball Sleeve/Kingsbury
Exxon Teresstic EP 68 Teresstic EP 46 Teresstic EP 32
Mobil DTE Heavy Medium DTE 746 DTE 732
Sunoco Sunvis 968 Sunvis 946 Sunvis 932
Royal Purple SYNFILM ISO VG 68 SYNFILM ISO VG 46 SYNFILM ISO VG 32
Lubricate the bearings with oil
NOTICE:
Do not expose an idle pump to freezing conditions. Drain all liquid that is inside the pump and
the cooling coils. Failure to do so can cause liquid to freeze and damage the pump.
Ring oil-lubricated pumps are supplied with an oiler that maintains a constant oil level in the
bearing housing.
1. Fill the oil reservoir in the bearing frame:
a) Fill the bearing chamber through the main body of the Watchdog until it reaches the
optimum fluid level visible in the bullseye sight.
b) Fill the watchdog reservoir using a funnel.
c) Verify o-ring is on the Watchdog oiler spout.
d) Place your thumb over the reservoir spout. Invert and insert the spout into the internal
threaded boss on the main body.
e) Tighten reservoir. Do not over-tighten.
f)
Verify that proper oil level is maintained per the following diagram.
NOTICE:
Do not fill the oil reservoir of the bearing frame through the plug at the top.
Model 3640 Installation, Operation, and Maintenance Manual 39