DYC deicer Use SOP
6 Dec 2018

General

Every December DYC installs 20 deicers to protect the pier from ice damage. The only function of the deicers is pier protection, while this may also protect boats left in the water over winter, DYC is not attempting to protect boats and is not responsible for any damage to boats. The deicers are motors with propellers that move the water around the pier to keep it from freezing. They are stored on shelving in the front of the equipment trailer.

If the water freezes around the pilings, tidal lifting and ice motion will lift or lean pilings resulting in dock damage. Deicers are installed between outer pilings on both sides of the pier to move water towards the shore and remain in the water all winter. Other deicers are placed along the pier to move water under the pier and towards the ramp and remain on the dock until needed. deicers are only powered on when ice starts developing on the creek. Some years deicers may not be used while other years they will be active for two to eight weeks.

Installation

Preparation

Remove deicers from trailer and sort into following groups:
1. 3/4 hp (standard size units)
  1. Red group – 4 units
  2. Green group – 4 units
  3. White Ice Eater brand unit with some black paint.
  4. 3/4 hp unit with blue paint on bottom.
  5. 3/4 hp unit with attached dock mount.
  6. All others.
2. 1/2 hp units
  1. 2 units – both have blue tops
Take the red and green group to the boat ramp for loading on the boat. Boat crew will install as follows:
1. reds – on east side outer pilings.
2. greens – on west side outer pilings (one green unit has a short cord, use at slip 16).
Take the white ice eater unit with black paint to between slips 60/62.
Take the 3/4 hp unit with blue paint to the first finger pier on east side.
Take the 3/4 hp unit with attached dock mount about halfway to the gate on the dock.
Take all other units to dock for placement (use chart below for install).

General Notes

Built-in cords on all outboard units are same length.
Deicers use ONLY 30A circuits (no household circuits)(except on shore pole).
All 30A marine circuits are accessed via Y-connector adaptor (ie. pigtail). Max 2 deicers per box.
Any boat plugged-in to a 30A box (ie. circular plug) will have to adapt to the Y-connector.
Note-all outlets are 120VAC.
Outlets change year to year based on which wintering-over boats are plugged in, try to disturb as few as possible.

Install Notes

Careful not to put any tension on the cords, but not so loose the prop can get them, try to arrange a fair lead when operating, especially with outboard units.
1/2 hp units have a blue top, 3/4 have black top.
For tie-up, use eyelets where available, otherwise wrap around piling.

Checklist

Y-connectors are held in a “down” position via nail in piling (to keep water out).
Extension cord connections: electrical tape the connection to keep it waterproof.
Note- circuit plug-in vary from year to year in an attempt to unplug as few boats as possible, start hookup at shore end since most boats near shore do not use shore power.

Inboard group

Installed, tested, then placed on dock until needed.
The cord points toward the outlet to be used.
X means outlet is across dock.
P means outlet is on pole or panel.

Table 1 - Along Pier
slip	box #	box location	extension cord	size (hp)		comment
2	6	slip 8	long	3/4		ensure cord pointing toward slip 8
7	4	slip 7			1/2	blue top
12	6X	slip 9		3/4
19	13P	slip 27	long	3/4
28	3	slip 30		3/4
36	3	slip 36		3/4
39	26	slip 40			1/2	blue top
48	7	slip 46		3/4
51	9	slip 51/53		3/4
60	11	slip 58		3/4		black paint "Ice Eater", blows west from dock
63	11X	slip 58 finger	med	3/4		blue paint, blows to ramp from finger pier
dock	3P	shore pole	extra long	3/4		pole and flange for 'dockmount' blows to ramp

Outboard groups

Hung from two outer piles, stay in water all winter.
Hang as low as possible, angle upwards, can “surface” in low tides, wind cords around slip rope.
Use painted eyes on pilings.
2 units below marked T are located on T dock
Cords must point toward dock for unit to blow toward shore.

Table 2 -
East side – (red paint)
slip	box #	box location	extension cord	hp
1T	20	slip 1	long	3/4
13	14	slip 17	med	3/4
29	1X	slip 38	long	3/4
45	9	slip 41	med	3/4

Table 3 -
West side – (green paint)
slip	box #	box location	extension cord	hp
2T	20	slip 6	long	3/4
16	14	slip 17	long, short cord on deicer, join over pile	3/4
30	1	slip 31	med	3/4
46	7	slip 46		3/4

Circuit Boxes

Shore pole is powered via the shore master switch (electrical panel on the shore pole). Switch also powers the shore street light. Dock circuits are marked in panel on dock.

Circuit Breaker Assignments

Table 4 -
DYC Dock Circuits & Deicer Use
Circuit #	Type	Slip
Grey - Bubbler	Red - 20A circuit
1	30A Marine	31
2	30A Marine	1T
3	30A Marine	36
4	30A Marine	7
5	30A Marine	41
6	30A Marine	8
7	30A Marine	46
8	20A Standard	Spare
9	30A Marine	53
10	30A Marine	23
11	30A Marine	58
12	30A Marine	24
13	30A Marine	27
14	30A Marine	17
15	30A Marine	27
16	30A Marine	18
17	20A Standard	1 2 10 13 16
18	30A Marine	10
19	20A Standard	17 20 21 24 25
20	30A Marine	6
21	20A Standard	43 44 53 54 61 62
22	30A Marine	5
23	20A Standard	30 31 34 35 38 39
24	30A Marine	9
25	30A Marine	28
26	30A Marine	40
?	30A Marine	shore

5 "Standard" type boxes are 20A circuits

22 "Marine" type boxes are 30A circuits

Removal

Here is a guide to spring cleanup of the deicers:

Using the work boat(remember life jackets), remove the 2 groups of 4 in the water.
Get them to shore and wash, keeping the groups separate.
For the dock mount unit, just detach from the dock mounted part, do NOT disassemble.
While doing the above, dry, retrieve the other units from the dock.
Repaint red/green as needed.
Check/replace zincs as needed (tools/supplies in trailer).
Coil up the cords/lines and affix with tiewraps.
Store the dock units in trailer.
Put pigtails in crate in Dockhouse locker.
Coil all cords, secure w/tie wraps, store in cord locker.
Store dock mount assembly in trailer.
Cover dock mount dock part with traffic cone secured to dock.

DYC deicer Use SOP6 Dec 2018